Orbital Analysis for matched events on 20211103_022040.896_UK

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Summary for Event
-----------------
shower ID 23 EGE
Lg 112.91° Bg 5.07° Vg 68.16km/s
mass 0.01568g, abs. mag -0.4
best visual mag 0.8
Path Details
------------
start 0.58° 50.58° 114.03km
end   0.41° 50.63° 96.28km

Orbit Details
-------------
Semimajor axis 8.24A.U., eccentricity 0.91, inclination 170.14°, Period 23.67Y, LA Sun 220.58°, last Perihelion 1998-04-09

Full details below
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Input measurement type: Azimuth +east of due north for meas1, Elevation angle above the horizon for meas2

Uncertainties type:
 Purely geometric uncertainties

Reference JD: 2459521.597695562057
Time: 2021-11-03 02:20:40.896562 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000F and UK002C
 Convergence angle = 42.17450 deg
 R.A. = 116.29328  Dec = +25.54586 deg
Intersection 2 - Stations: UK000F and UK002N
 Convergence angle = 8.93728 deg
 R.A. = 116.23992  Dec = +25.16572 deg
Intersection 3 - Stations: UK000F and UK002W
 Convergence angle = 50.37059 deg
 R.A. = 116.37130  Dec = +26.09727 deg
Intersection 4 - Stations: UK000F and UK0034
 Convergence angle = 43.78497 deg
 R.A. = 116.45084  Dec = +26.65412 deg
Intersection 5 - Stations: UK000F and UK0038
 Convergence angle = 53.17519 deg
 R.A. = 116.20010  Dec = +24.88051 deg
Intersection 6 - Stations: UK000F and UK0041
 Convergence angle = 48.89258 deg
 R.A. = 116.52392  Dec = +27.16100 deg
Intersection 7 - Stations: UK000F and UK0045
 Convergence angle = 53.26976 deg
 R.A. = 116.42355  Dec = +26.46368 deg
Intersection 8 - Stations: UK002C and UK002N
 Convergence angle = 51.11161 deg
 R.A. = 116.34180  Dec = +25.48315 deg
Intersection 9 - Stations: UK002C and UK002W
 Convergence angle = 8.20586 deg
 R.A. = 114.34778  Dec = +27.99302 deg
Intersection 10 - Stations: UK002C and UK0034
 Convergence angle = 85.95440 deg
 R.A. = 115.79878  Dec = +26.18038 deg
Intersection 11 - Stations: UK002C and UK0038
 Convergence angle = 11.01174 deg
 R.A. = 118.04493  Dec = +23.23051 deg
Intersection 12 - Stations: UK002C and UK0041
 Convergence angle = 88.94463 deg
 R.A. = 115.50786  Dec = +26.54970 deg
Intersection 13 - Stations: UK002C and UK0045
 Convergence angle = 84.55977 deg
 R.A. = 115.81808  Dec = +26.15577 deg
Intersection 14 - Stations: UK002N and UK002W
 Convergence angle = 59.30680 deg
 R.A. = 116.50022  Dec = +25.97334 deg
Intersection 15 - Stations: UK002N and UK0034
 Convergence angle = 34.85138 deg
 R.A. = 116.80677  Dec = +26.90983 deg
Intersection 16 - Stations: UK002N and UK0038
 Convergence angle = 62.11237 deg
 R.A. = 116.16004  Dec = +24.91562 deg
Intersection 17 - Stations: UK002N and UK0041
 Convergence angle = 39.96173 deg
 R.A. = 116.97955  Dec = +27.43062 deg
Intersection 18 - Stations: UK002N and UK0045
 Convergence angle = 44.33514 deg
 R.A. = 116.70685  Dec = +26.60632 deg
Intersection 19 - Stations: UK002W and UK0034
 Convergence angle = 85.84591 deg
 R.A. = 116.07426  Dec = +26.38137 deg
Intersection 20 - Stations: UK002W and UK0038
 Convergence angle = 2.96540 deg
 R.A. = 129.71855  Dec = +11.41255 deg
Intersection 21 - Stations: UK002W and UK0041
 Convergence angle = 80.74274 deg
 R.A. = 115.74522  Dec = +26.69375 deg
Intersection 22 - Stations: UK002W and UK0045
 Convergence angle = 76.36041 deg
 R.A. = 116.13908  Dec = +26.31954 deg
Intersection 23 - Stations: UK0034 and UK0038
 Convergence angle = 83.05541 deg
 R.A. = 115.20535  Dec = +25.74329 deg
Intersection 24 - Stations: UK0034 and UK0041
 Convergence angle = 5.12094 deg
 R.A. = 120.30388  Dec = +29.31375 deg
Intersection 25 - Stations: UK0034 and UK0045
 Convergence angle = 9.48588 deg
 R.A. = 115.64194  Dec = +26.06542 deg
Intersection 26 - Stations: UK0038 and UK0041
 Convergence angle = 77.96068 deg
 R.A. = 114.78215  Dec = +26.10459 deg
Intersection 27 - Stations: UK0038 and UK0045
 Convergence angle = 73.56991 deg
 R.A. = 115.13515  Dec = +25.80346 deg
Intersection 28 - Stations: UK0041 and UK0045
 Convergence angle = 4.41118 deg
 R.A. = 109.89671  Dec = +22.92468 deg

Best intersection: Stations UK002C and UK0041 with Qconv = 88.94 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =    836248.60 +/- 65.21 m
 Y =   4044931.90 +/- 204.74 m
 Z =   4992292.10 +/- 82.11 m
 Vx =   -26891.13 +/- 12.87 m/s
 Vy =    55567.06 +/- 541.09 m/s
 Vz =    30955.16 +/- 392.85 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+4.560885e+03, -1.323066e+04, -5.131632e+03, -3.359820e+02, -2.149349e+04, +1.155082e+03
-1.323066e+04, +4.470523e+04, +1.642660e+04, +9.683586e+03, +7.276569e+04, -5.239566e+03
-5.131632e+03, +1.642660e+04, +7.075383e+03, +5.720787e+03, +2.007140e+04, -1.095198e+03
-3.359820e+02, +9.683586e+03, +5.720787e+03, +4.994893e+04, -4.784411e+04, -2.644800e+04
-2.149349e+04, +7.276569e+04, +2.007140e+04, -4.784411e+04, +2.550364e+05, +2.681849e+04
+1.155082e+03, -5.239566e+03, -1.095198e+03, -2.644800e+04, +2.681849e+04, +3.054255e+04

Timing offsets (from input data):
    UK000F: 0.000294 s
    UK002B: 0.000000 s
    UK002C: 0.000364 s
    UK002N: 0.000829 s
    UK002W: 0.000259 s
    UK0034: 0.000080 s
    UK0038: 0.000220 s
    UK003S: 0.000000 s
    UK0041: -0.000113 s
    UK0045: 0.000000 s

Reference point on the trajectory:
  Time: 2021-11-03 02:20:40.896562 UTC
  Lon     = ++0.579916 +/- 0.0014 deg
  Lat     = +50.582259 +/- 0.0009 deg
  Lat geo = +50.396680 +/- 0.0009 deg
  Ht      =  114026.53 +/- 179.88 m

  JD dynamic   = 2459521.598496302962 
  LST apparent = 78.3192410479 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 115.82420 +/- 0.2004 deg
  Dec       = +26.63124 +/- 0.1666 deg
  Azimuth   = 115.81005 +/- 0.3715 deg
  Elevation = +52.80371 +/- 0.0973 deg
  Vavg      =  67.46556 +/- 0.3369 km/s
  Vinit     =  69.05833 +/- 0.4748 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 116.04531 +/- 0.2004 deg
  Dec       = +26.56303 +/- 0.1666 deg
  Azimuth   = 115.63124 +/- 0.3715 deg
  Elevation = +52.62480 +/- 0.0973 deg
  Vavg      =  67.62995 +/- 0.3369 km/s
  Vinit     =  69.22272 +/- 0.4748 km/s
Radiant (geocentric, J2000):
  R.A.   = 115.67046 +/- 0.2021 deg
  Dec    = +26.49164 +/- 0.1659 deg
  Vg     =  68.16173 +/- 0.4810 km/s
  Vinf   =  69.05833 +/- 0.4748 km/s
  Zc     =  37.11581 +/- 0.0973 deg
  Zg     =  37.36718 +/- 0.0966 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 112.90679 +/- 0.1614 deg
  Bg     =  +5.07226 +/- 0.1862 deg
  Vh     =  40.99664 +/- 0.4751 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  99.30806 +/- 0.2561 deg
  Bh     =  +8.45304 +/- 0.3344 deg
  Vh_x   =   6.55887 +/- 0.2132 km/s
  Vh_y   = -40.01734 +/- 0.4824 km/s
  Vh_z   =  -6.02645 +/- 0.2002 km/s
Orbit:
  La Sun = 220.584147 +/- -0.0000 deg
  a      =   8.243601 +/- 105.2572 AU
  e      =   0.912930 +/- 0.0316
  i      = 170.135201 +/- 0.3839 deg
  peri   = 245.135671 +/- 1.4230 deg
  node   = 220.590902 +/- 0.0003 deg
  Pi     = 105.726573 +/- 1.4229 deg
  q      =   0.717768 +/- 0.0067 AU
  f      = 294.869712 +/- 1.4232 deg
  M      = 358.476238 +/- 0.6255 deg
  Q      =  15.769434 +/- 210.5124 AU
  n      =   0.041642 +/- 0.0169 deg/day
  T      =  23.668792 +/- 2238.5335 years
  Last perihelion JD = 2450913.013868 (1998-04-09 12:19:58.190323) +/- 185770.8555 days
  Tj     =  -0.380789 +/- 0.2445
Shower association:
  IAU No.  =   23
  IAU code =  EGE

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +1.055485e-03, +1.816550e-04, -3.961989e+03, +6.409410e-06, -4.445915e-02, +9.488499e-03
q   , +1.816550e-04, +4.859310e-05, -5.534696e+02, +6.267281e-07, -9.928571e-03, +9.093324e-04
Tp  , -3.961989e+03, -5.534696e+02, +3.404608e+10, -2.810693e+01, +1.486014e+05, -4.021839e+04
node, +6.409410e-06, +6.267281e-07, -2.810693e+01, +7.039835e-08, -2.069167e-04, +1.072782e-04
peri, -4.445915e-02, -9.928571e-03, +1.486014e+05, -2.069167e-04, +2.172052e+00, -3.039190e-01
i   , +9.488499e-03, +9.093324e-04, -4.021839e+04, +1.072782e-04, -3.039190e-01, +1.641455e-01

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 4.691320
 a2 = 11.722566

Mean time residuals from time vs. length:
  Station with reference time: UK0045
  Avg. res. = 6.653e-07 s
  Stddev    = 8.16e-04 s

Begin point on the trajectory:
  Lon =     0.579970 +/- 0.0009 deg
  Lat =    50.582243 +/- 0.0008 deg
  Ht  = 114032.24 +/- 127.26 m
End point on the trajectory:
  Lon =     0.409592 +/- 0.0007 deg
  Lat =    50.634113 +/- 0.0007 deg
  Ht  = 96277.63 +/- 104.59 m

Stations
--------
        ID, Ignored, Lon +E (deg), Lat +N (deg),  Ht (m), Jacchia a1, Jacchia a2,  Beg Ht (m),  End Ht (m), +/- Obs ang (deg), +/- V (m), +/- H (m), Persp. angle (deg), Weight, FOV Beg, FOV End, Comment
    UK000F,   False,    -1.306160,    51.883100,   80.00,  39.742761,   0.000000,   112264.45,    98549.60,          0.014978,     41.70,     39.17,              27.02, 0.2064,    True,    True, {"ff_name": "FF_UK000F_20211103_022041_004_0824320.fits"}
    UK002B,    True,    -1.367130,    50.815550,   22.00, 112.621007,   3.769379,   113288.34,    97911.92,          0.070211,       nan,       nan,              16.64, 0.0000,    True,    True, {"ff_name": "FF_UK002B_20211103_022041_274_0821760.fits"}
    UK002C,   False,    -1.801980,    51.351940,  130.00,   0.000000,   0.000000,   111620.88,    98835.07,          0.021715,     80.63,      3.88,              20.85, 0.1267,    True,    True, {"ff_name": "FF_UK002C_20211103_022038_908_0819456.fits"}
    UK002N,   False,    -0.727590,    51.263100,   57.00,   0.000000,  69.045752,   112372.37,    97011.35,          0.031097,     52.79,     63.23,              12.45, 0.0465,    True,    True, {"ff_name": "FF_UK002N_20211103_022033_387_0825344.fits"}
    UK002W,   False,    -2.374601,    51.371449,   48.00,   0.000000,   0.000000,   110833.89,   100438.39,          0.020990,     89.44,      9.58,              25.07, 0.1795,    True,    True, {"ff_name": "FF_UK002W_20211103_022040_885_0817408.fits"}
    UK0034,   False,     1.010397,    52.949859,   25.00,   0.000000,   0.000000,   109450.54,   101090.42,          0.005153,      0.98,     25.55,              58.75, 0.7308,    True,    True, {"ff_name": "FF_UK0034_20211103_022033_334_0840960.fits"}
    UK0038,   False,    -2.379250,    51.361350,  169.00,   0.000000,   0.000000,   111655.66,    98880.53,          0.036403,    150.46,     18.27,              25.10, 0.1799,    True,    True, {"ff_name": "FF_UK0038_20211103_022034_172_0817152.fits"}
    UK003S,    True,    -2.379340,    51.361330,  169.00,   0.023315,  35.680936,   111886.56,    98757.82,          0.211666,       nan,       nan,              25.10, 0.0000,    True,    True, {"ff_name": "FF_UK003S_20211103_022039_088_0816896.fits"}
    UK0041,   False,     1.214343,    52.647541,   45.00,   0.000008,  72.526093,   109689.93,   101086.33,          0.002342,      0.58,     10.50,              59.46, 0.7417,    True,    True, {"ff_name": "FF_UK0041_20211103_022038_634_0837376.fits"}
    UK0045,   False,    -0.162580,    51.236418,  112.00,  57.466108,   0.000000,   114032.24,    96277.63,          0.020969,      5.60,     51.23,              17.11, 0.0865,    True,    True, {"ff_name": "FF_UK0045_20211103_022038_159_0830208.fits"}

Points
------
 No, Station ID,  Ignore,  Time (s),                   JD,     meas1,     meas2, Azim +E of due N (deg), Alt (deg), Azim line (deg), Alt line (deg), RA obs (deg), Dec obs (deg), RA line (deg), Dec line (deg),       X (m),       Y (m),       Z (m), Latitude (deg), Longitude (deg), Height (m),  Range (m), Length (m), State vect dist (m),  Lag (m), Vel (m/s), Vel prev avg (m/s), H res (m), V res (m), Ang res (asec), AppMag, AbsMag
  0,     UK000F,       0,  0.034921, 2459521.597695962992, 113.02699,  -0.90959,              137.09770,  28.88422,       137.10357,       28.88722,    113.02699,      -0.90959,     113.02122,       -0.90903,   837110.05,  4043151.84,  4991300.47,      50.587402,       +0.563064,  112264.45,  225976.96,       0.00,             2212.25,  -324.26,      0.00,           71225.77,    -16.05,     17.08,          21.40,  +3.57,  +1.80
  1,     UK000F,       0,  0.075213, 2459521.597696429119, 113.00168,  -1.27364,              137.29805,  28.56437,       137.31534,       28.57318,    113.00168,      -1.27364,     112.98451,       -1.27199,   838301.14,  4040690.60,  4989929.36,      50.594513,       +0.539774,  109828.51,  223265.63,    3058.81,             5271.06,   -47.95,  75916.09,           71225.77,    -46.84,     49.87,          63.20,  +2.04,  +0.30
  2,     UK000F,       0,  0.115465, 2459521.597696895245, 112.96695,  -1.59427,              137.48631,  28.28760,       137.50181,       28.29550,    112.96695,      -1.59427,     112.95173,       -1.59279,   839330.33,  4038563.92,  4988744.64,      50.600659,       +0.519607,  107724.09,  220929.37,    5701.84,             7914.08,  -184.66,  65662.04,           71225.77,    -41.64,     44.32,          56.77,  +1.78,  +0.06
  3,     UK000F,       0,  0.155761, 2459521.597697361372, 112.94082,  -1.96522,              137.68843,  27.96124,       137.71526,       27.97489,    112.94082,      -1.96522,     112.91423,       -1.96266,   840490.61,  4036166.35,  4987409.00,      50.607587,       +0.496871,  105352.09,  218304.98,    8681.52,            10893.77,    12.25,  73944.87,           71225.77,    -71.33,     75.97,          98.46,  +1.48,  -0.22
  4,     UK000F,       0,  0.196033, 2459521.597697827499, 112.88123,  -2.31910,              137.91570,  27.66396,       137.91971,       27.66600,    112.88123,      -2.31910,     112.87797,       -2.31872,   841581.84,  4033911.46,  4986152.86,      50.614104,       +0.475457,  103121.68,  215844.94,   11483.88,            13696.12,    33.49,  69585.69,           70984.43,    -10.57,     11.24,          14.74,  +1.27,  -0.40
  5,     UK000F,       0,  0.236317, 2459521.597698293626, 112.84202,  -2.67863,              138.12343,  27.35277,       138.12512,       27.35363,    112.84202,      -2.67863,     112.84128,       -2.67846,   842659.72,  4031684.15,  4984912.07,      50.620542,       +0.454283,  100918.97,  213423.34,   14251.97,            16464.21,    19.63,  68714.38,           70591.13,     -4.42,      4.70,           6.24,  +1.93,  +0.28
  6,     UK000F,       0,  0.276637, 2459521.597698760685, 112.81434,  -3.07608,              138.33569,  27.00195,       138.34984,       27.00913,    112.81434,      -3.07608,     112.80103,       -3.07471,   843819.39,  4029287.85,  4983577.14,      50.627469,       +0.431492,   98549.60,  210828.24,   17230.07,            19442.32,   213.31,  73861.77,           70801.48,    -36.56,     38.88,          52.22,  +3.86,  +2.24
  0,     UK002B,       1,  0.015914, 2459521.597695746459, 133.74811,  23.18107,               99.92254,  38.18802,        99.87403,       38.21155,    133.74811,     +23.18107,     133.76136,      +23.22420,   836609.47,  4044186.22,  4991876.69,      50.584414,       +0.572852,  113288.34,  180604.76,       0.00,              926.73,  -297.20,      0.00,           72031.55,    -99.37,   -100.34,         161.28,  +3.07,  +1.79
  1,     UK002B,       1,  0.056142, 2459521.597696211655, 134.00837,  23.08217,               99.78381,  37.95321,        99.70119,       37.99311,    134.00837,     +23.08217,     134.03134,      +23.15563,   837708.64,  4041914.93,  4990611.41,      50.590976,       +0.551357,  111040.18,  177892.34,    2822.74,             3749.48,  -252.54,  70168.55,           72031.55,   -166.56,   -168.80,         274.96,  +1.70,  +0.45
  2,     UK002B,       1,  0.096382, 2459521.597696677782, 134.29353,  22.99444,               99.61438,  37.71103,        99.51664,       37.75810,    134.29353,     +22.99444,     134.32112,      +23.08142,   838853.09,  4039550.07,  4989294.00,      50.597809,       +0.528961,  108699.87,  175072.46,    5761.78,             6688.51,   -92.41,  73037.64,           72031.55,   -194.09,   -197.00,         325.82,  +1.15,  -0.07
  3,     UK002B,       1,  0.136626, 2459521.597697143443, 134.59151,  22.92218,               99.42115,  37.47215,        99.32854,       37.51674,    134.59151,     +22.92218,     134.61803,      +23.00474,   839990.05,  4037200.68,  4987985.21,      50.604598,       +0.506688,  106375.33,  172275.16,    8681.57,             9608.30,    48.20,  72552.29,           72031.55,   -181.44,   -184.01,         309.41,  +0.94,  -0.24
  4,     UK002B,       1,  0.176846, 2459521.597697609104, 134.84691,  22.84010,               99.27307,  37.25249,        99.16434,       37.30470,    134.84691,     +22.84010,     134.87839,      +22.93709,   840959.82,  4035196.78,  4986868.88,      50.610389,       +0.487649,  104392.98,  169891.26,   11172.01,            12098.74,  -238.89,  61920.39,           70095.81,   -210.20,   -213.50,         363.76,  +0.92,  -0.23
  5,     UK002B,       1,  0.217090, 2459521.597698074766, 135.15743,  22.79453,               99.04740,  37.02525,        98.97604,       37.05962,    135.15743,     +22.79453,     135.17858,      +22.85839,   842045.33,  4032953.71,  4985619.31,      50.616873,       +0.466337,  102174.45,  167227.87,   13959.68,            14886.41,  -230.41,  69269.21,           69424.51,   -136.51,   -138.08,         239.49,  +0.84,  -0.28
  6,     UK002B,       1,  0.257338, 2459521.597698540427, 135.47144,  22.74506,               98.82274,  36.79285,        98.78611,       36.81053,    135.47144,     +22.74506,     135.48294,      +22.77793,   843113.15,  4030747.20,  4984390.12,      50.623251,       +0.445351,   99992.48,  164611.98,   16701.91,            17628.65,  -267.63,  68133.41,           69046.39,    -69.31,    -69.84,         123.29,  +1.71,  +0.63
  7,     UK002B,       1,  0.297582, 2459521.597699006088, 135.77624,  22.68441,               98.61594,  36.55785,        98.60051,       36.56531,    135.77624,     +22.68441,     135.78190,      +22.69828,   844131.53,  4028642.86,  4983217.83,      50.629334,       +0.425310,   97911.92,  162120.86,   19317.17,            20243.91,  -431.55,  64985.12,           68550.34,    -28.86,    -29.02,          52.07,  +2.68,  +1.63
  0,     UK002C,       0,  0.034377, 2459521.597695955541, 127.82144,   8.59999,              116.22849,  29.86440,       116.19577,       29.86253,    127.82144,      +8.59999,     127.84630,       +8.61453,   837424.71,  4042501.63,  4990938.25,      50.589281,       +0.556960,  111620.88,  218364.49,       0.00,             3020.33,   521.34,      0.00,           64505.87,      5.23,   -108.26,         102.38,  +3.36,  +1.66
  1,     UK002C,       0,  0.074585, 2459521.597696421202, 127.94396,   8.38909,              116.25105,  29.62196,       116.21574,       29.61993,    127.94396,      +8.38909,     127.97100,       +8.40480,   838412.38,  4040460.74,  4989801.31,      50.595178,       +0.537616,  109601.03,  215994.44,    2536.41,             5556.74,   281.05,  63082.23,           64505.87,      5.62,   -115.83,         110.75,  +1.75,  +0.08
  2,     UK002C,       0,  0.114817, 2459521.597696886864, 128.09786,   8.17253,              116.24764,  29.35722,       116.23720,       29.35663,    128.09786,      +8.17253,     128.10625,       +8.17719,   839459.99,  4038296.00,  4988595.38,      50.601433,       +0.517089,  107459.01,  213485.48,    5226.73,             8247.06,   193.02,  66870.21,           64505.87,      1.61,    -33.94,          32.83,  +1.84,  +0.19
  3,     UK002C,       0,  0.155029, 2459521.597697352059, 128.21465,   7.94663,              116.28478,  29.10553,       116.25779,       29.10398,    128.21465,      +7.94663,     128.23582,       +7.95869,   840442.95,  4036264.84,  4987463.87,      50.607303,       +0.497802,  105449.51,  211134.98,    7751.04,            10771.37,   -59.64,  62775.06,           64505.87,      4.20,    -86.98,          85.07,  +1.15,  -0.47
  4,     UK002C,       0,  0.195265, 2459521.597697817720, 128.35903,   7.71429,              116.30001,  28.83302,       116.27976,       28.83186,    128.35903,      +7.71429,     128.37527,       +7.72336,   841477.46,  4034127.14,  4986273.01,      50.613481,       +0.477493,  103335.00,  208666.24,   10407.75,            13428.08,  -181.57,  66028.12,           64716.22,      3.11,    -64.66,          63.99,  +1.25,  -0.35
  5,     UK002C,       0,  0.235489, 2459521.597698283382, 128.49602,   7.48926,              116.31716,  28.57062,       116.30093,       28.56970,    128.49602,      +7.48926,     128.50940,       +7.49655,   842451.80,  4032113.79,  4985151.41,      50.619300,       +0.458340,  101343.81,  206344.97,   12909.93,            15930.26,  -457.19,  62206.22,           64417.71,      2.46,    -51.39,          51.43,  +1.55,  -0.02
  6,     UK002C,       0,  0.275785, 2459521.597698749974, 128.69892,   7.21323,              116.30546,  28.22918,       116.32765,       28.23042,    128.69892,      +7.21323,     128.68309,       +7.20322,   843679.65,  4029576.60,  4983738.00,      50.626634,       +0.434223,   98835.07,  203428.49,   16063.14,            19083.46,   -86.76,  78251.02,           65796.13,     -3.23,     69.49,          70.54,  +3.34,  +1.80
  0,     UK002N,       0,  0.031917, 2459521.597695922013, 112.90717,  13.92318,              129.11688,  42.82069,       129.12539,       42.82625,    112.90717,     +13.92318,     112.89887,      +13.92487,   837057.28,  4043260.87,  4991361.20,      50.587087,       +0.564102,  112372.37,  163591.68,       0.00,             2076.75,  -252.36,      0.00,           71462.45,    -18.25,     15.38,          30.09,  +2.27,  +1.20
  1,     UK002N,       0,  0.072069, 2459521.597696386743, 112.81543,  13.70396,              129.37099,  42.67518,       129.33966,       42.65465,    112.81543,     +13.70396,     112.84681,      +13.69763,   838187.47,  4040925.48,  4990060.21,      50.593835,       +0.541996,  110060.95,  160758.29,    2902.40,             4979.15,  -122.79,  72285.29,           71462.45,     66.38,    -55.57,         111.08,  +1.67,  +0.64
  2,     UK002N,       0,  0.112241, 2459521.597696851473, 112.76146,  13.47306,              129.58865,  42.50087,       129.55640,       42.47978,    112.76146,     +13.47306,     112.79392,      +13.46654,   839297.36,  4038632.03,  4988782.58,      50.600462,       +0.520263,  107791.49,  157978.32,    5752.68,             7829.43,   -46.72,  70951.96,           71462.45,     67.22,    -56.23,         114.42,  +1.49,  +0.50
  3,     UK002N,       0,  0.152429, 2459521.597697316669, 112.72137,  13.22924,              129.79797,  42.30830,       129.78088,       42.29717,    112.72137,     +13.22924,     112.73894,      +13.22580,   840413.47,  4036325.74,  4987497.80,      50.607127,       +0.498388,  105509.77,  155185.63,    8618.92,            10695.67,    44.21,  71320.88,           71462.45,     34.97,    -29.31,          60.65,  +1.24,  +0.29
  4,     UK002N,       0,  0.192597, 2459521.597697781399, 112.64970,  12.99938,              130.03295,  42.14269,       129.99769,       42.11971,    112.64970,     +12.99938,     112.68547,      +12.99223,   841459.38,  4034164.51,  4986293.82,      50.613373,       +0.477859,  103371.95,  152570.86,   11304.89,            13381.64,   -43.76,  66868.35,           70512.52,     71.14,    -59.44,         125.33,  +1.17,  +0.25
  5,     UK002N,       0,  0.232789, 2459521.597698246595, 112.60028,  12.74298,              130.25888,  41.94291,       130.23240,       41.92570,    112.60028,     +12.74298,     112.62750,      +12.73762,   842559.93,  4031890.36,  4985026.95,      50.619946,       +0.456245,  101122.88,  149822.80,   14131.18,            16207.93,     6.93,  70319.67,           70213.57,     52.47,    -43.88,          94.17,  +1.33,  +0.45
  6,     UK002N,       0,  0.272969, 2459521.597698711790, 112.51128,  12.49305,              130.52451,  41.76723,       130.46732,       41.73001,    112.51128,     +12.49305,     112.56916,      +12.48135,   843628.38,  4029682.55,  4983797.02,      50.626328,       +0.435237,   98939.83,  147157.77,   16875.04,            18951.79,   -23.97,  68289.08,           69900.60,    111.78,    -93.02,         203.83,  +2.06,  +1.22
  7,     UK002N,       0,  0.313161, 2459521.597699176986, 112.49629,  12.25078,              130.69935,  41.56266,       130.68130,       41.55099,    112.49629,     +12.25078,     112.51548,      +12.24713,   844572.39,  4027731.87,  4982710.34,      50.631967,       +0.416640,   97011.35,  144804.99,   19299.32,            21376.07,  -375.28,  60317.69,           68971.29,     34.61,    -28.95,          64.27,  +3.13,  +2.33
  0,     UK002W,       0,  0.042971, 2459521.597696056589, 133.19684,   7.08820,              111.78358,  25.22797,       111.76466,       25.22869,    133.19684,      +7.08820,     133.21058,       +7.09879,   837809.52,  4041706.48,  4990495.28,      50.591578,       +0.549454,  110833.89,  250627.97,       0.00,             4008.53,   916.05,      0.00,           59505.68,     -7.99,    -74.49,          61.66,  +4.87,  +2.87
  1,     UK002W,       0,  0.083119, 2459521.597696520854, 133.30669,   6.94273,              111.77968,  25.04621,       111.75726,       25.04706,    133.30669,      +6.94273,     133.32314,       +6.95528,   838526.26,  4040225.41,  4989670.22,      50.595857,       +0.535367,  109368.16,  248959.27,    1840.66,             5849.20,   -15.84,  45846.88,           59505.68,     -9.41,    -87.81,          73.16,  +3.39,  +1.41
  2,     UK002W,       0,  0.123303, 2459521.597696986049, 133.44348,   6.76362,              111.77341,  24.82150,       111.74788,       24.82247,    133.44348,      +6.76362,     133.46237,       +6.77794,   839398.53,  4038422.99,  4988666.13,      50.601066,       +0.518248,  107584.65,  246934.06,    4080.69,             8089.23,  -550.85,  55744.34,           59505.68,    -10.63,    -99.40,          83.50,  +2.20,  +0.24
  3,     UK002W,       0,  0.163563, 2459521.597697452176, 133.63554,   6.50362,              111.76993,  24.49903,       111.73399,       24.50039,    133.63554,      +6.50362,     133.66216,       +6.52381,   840623.17,  4035892.42,  4987256.40,      50.608379,       +0.494258,  105081.10,  244101.20,    7225.67,            11234.21,  -186.16,  78116.75,           59505.68,    -14.78,   -138.67,         117.84,  +1.65,  -0.29
  4,     UK002W,       0,  0.203835, 2459521.597697918303, 133.86383,   6.26037,              111.72348,  24.16911,       111.71978,       24.16925,    133.86383,      +6.26037,     133.86736,       +6.26246,   841853.32,  4033350.48,  4985840.34,      50.615726,       +0.470135,  102566.86,  241263.63,   10384.78,            14393.31,   191.83,  78444.22,           65038.50,     -1.53,    -14.16,          12.17,  +1.36,  -0.55
  5,     UK002W,       0,  0.244071, 2459521.597698383965, 134.05757,   6.04727,              111.68830,  23.88366,       111.70773,       23.88290,    134.05757,      +6.04727,     134.04452,       +6.03629,   842894.92,  4031198.15,  4984641.33,      50.621947,       +0.449664,  100438.39,  238865.91,   13059.67,            17068.20,    88.09,  66480.11,           66822.98,      8.00,     73.72,          64.03,  +2.99,  +1.10
  6,     UK002W,       1,  0.284287, 2459521.597698849626, 134.29926,   5.93511,              111.54653,  23.65230,       111.69803,       23.64587,    134.29926,      +5.93511,     134.19091,       +5.84891,   843742.35,  4029447.04,  4983665.83,      50.627009,       +0.432963,   98706.97,  236917.77,   15235.94,            19244.47,  -512.89,  54114.40,           66098.51,     64.59,    570.81,         500.13,  +5.17,  +3.30
  0,     UK0034,       1,  0.041810, 2459521.597696044948,  71.93935, -15.40936,              187.05238,  21.38837,       187.07114,       21.40376,     71.93935,     -15.40936,      71.92267,      -15.39267,   837732.25,  4041866.15,  4990584.23,      50.591117,       +0.550959,  110991.91,  288793.00,       0.00,             3810.10,   797.80,      0.00,           64284.92,   -117.27,      4.57,          83.82,  +5.65,  +3.35
  1,     UK0034,       0,  0.082014, 2459521.597696510144,  71.67652, -15.62933,              187.30486,  21.14928,       187.30987,       21.15339,     71.67652,     -15.62933,      71.67235,      -15.62486,   838485.98,  4040308.66,  4989716.59,      50.595617,       +0.536154,  109450.54,  287827.49,    1935.63,             5745.73,   -42.99,  48145.33,           64284.92,    -31.27,      1.21,          22.43,  +2.55,  +0.25
  2,     UK0034,       0,  0.122334, 2459521.597696977202,  71.29253, -15.97736,              187.66878,  20.77227,       187.66942,       20.77279,     71.29253,     -15.97736,      71.29247,      -15.97679,   839620.55,  4037964.21,  4988410.55,      50.602392,       +0.513934,  107130.74,  286392.12,    4849.30,             8659.39,    86.24,  72263.41,           64284.92,     -3.96,      0.15,           2.86,  +1.96,  -0.32
  3,     UK0034,       0,  0.162646, 2459521.597697443794,  70.92066, -16.31931,              188.01767,  20.40099,       188.01803,       20.40129,     70.92066,     -16.31931,      70.92102,      -16.31899,   840715.11,  4035702.45,  4987150.57,      50.608928,       +0.492472,  104893.19,  285028.91,    7660.20,            11470.30,   113.27,  69728.82,           64284.92,     -2.21,      0.09,           1.60,  +1.80,  -0.47
  4,     UK0034,       0,  0.202974, 2459521.597697910387,  70.53326, -16.67824,              188.37762,  20.01023,       188.38034,       20.01245,     70.53326,     -16.67824,      70.53166,      -16.67579,   841847.60,  4033362.30,  4985846.93,      50.615692,       +0.470250,  102578.55,  283640.95,   10568.52,            14378.62,   236.60,  72116.64,           66663.38,    -16.74,      0.64,          12.18,  +1.24,  -1.02
  5,     UK0034,       0,  0.243178, 2459521.597698375583,  70.27013, -16.90011,              188.62240,  19.76588,       188.61513,       19.75997,     70.27013,     -16.90011,      70.27768,      -16.90664,   842575.81,  4031857.56,  4985008.67,      50.620041,       +0.455889,  101090.42,  282761.30,   12438.61,            16248.70,  -669.74,  46514.84,           64470.65,     44.57,     -1.70,          32.53,  +5.00,  +2.74
  0,     UK0038,       0,  0.039027, 2459521.597696011420, 133.35435,   7.30816,              111.49257,  25.31598,       111.46742,       25.31710,    133.35435,      +7.30816,     133.37242,       +7.32238,   837407.70,  4042536.78,  4990957.82,      50.589179,       +0.557270,  111655.66,  251406.15,       0.00,             2976.65,   156.54,      0.00,           66055.91,    -11.69,    -99.16,          81.92,  +4.43,  +2.43
  1,     UK0038,       0,  0.079219, 2459521.597696476616, 133.55173,   7.12605,              111.43506,  25.05369,       111.45395,       25.05282,    133.55173,      +7.12605,     133.53859,       +7.11533,   838451.88,  4040379.11,  4989755.84,      50.595413,       +0.536828,  109520.26,  248978.90,    2681.53,             5658.18,    62.48,  66717.95,           66055.91,      8.84,     73.94,          61.69,  +2.00,  +0.02
  2,     UK0038,       0,  0.119435, 2459521.597696941812, 133.71227,   6.91211,              111.43080,  24.78695,       111.44045,       24.78651,    133.71227,      +6.91211,     133.70587,       +6.90662,   839483.92,  4038246.55,  4988567.83,      50.601576,       +0.516604,  107410.08,  246585.09,    5331.87,             8308.51,   -64.44,  65902.58,           66055.91,      4.46,     37.47,          31.57,  +1.68,  -0.28
  3,     UK0038,       0,  0.159647, 2459521.597697407473, 133.88041,   6.69925,              111.41897,  24.51665,       111.42681,       24.51629,    133.88041,      +6.69925,     133.87546,       +6.69478,   840511.09,  4036124.02,  4987385.42,      50.607710,       +0.496456,  105310.21,  244207.89,    7969.72,            10946.37,  -203.55,  65598.77,           66055.91,      3.60,     30.22,          25.71,  +1.66,  -0.28
  4,     UK0038,       0,  0.199891, 2459521.597697873134, 134.08740,   6.45793,              111.39095,  24.20063,       111.41072,       24.19973,    134.08740,      +6.45793,     134.07404,       +6.44664,   841688.89,  4033690.26,  4986029.63,      50.614744,       +0.473355,  102902.90,  241490.42,   10994.38,            13971.03,    41.93,  75158.05,           67827.16,      9.03,     75.58,          65.01,  +1.32,  -0.59
  5,     UK0038,       0,  0.240127, 2459521.597698338795, 134.27411,   6.22754,              111.37373,  23.90522,       111.39588,       23.90421,    134.27411,      +6.22754,     134.25919,       +6.21488,   842765.35,  4031465.89,  4984790.48,      50.621173,       +0.452207,  100703.14,  239012.49,   13758.81,            16735.46,    27.72,  68705.31,           68458.47,     10.03,     84.00,          73.00,  +2.35,  +0.46
  6,     UK0038,       0,  0.280295, 2459521.597698803525, 134.48234,   6.07373,              111.28857,  23.65936,       111.38361,       23.65483,    134.48234,      +6.07373,     134.41517,       +6.01914,   843657.40,  4029622.59,  4983763.62,      50.626501,       +0.434638,   98880.53,  236962.28,   16049.66,            19026.31,  -455.36,  57031.71,           67461.21,     43.67,    357.88,         313.83,  +3.99,  +2.12
  0,     UK003S,       1,  0.043010, 2459521.597696059849, 133.19254,   7.21721,              111.69536,  25.33613,       111.46794,       25.34508,    133.19254,      +7.21721,     133.35544,       +7.34477,   837294.81,  4042770.06,  4991087.78,      50.588505,       +0.559444,  111886.56,  251671.34,       0.00,             2686.72,  -408.43,      0.00,           73224.40,    -99.19,   -898.21,         740.63,  +4.81,  +2.81
  1,     UK003S,       1,  0.083230, 2459521.597696525510, 133.36166,   6.99215,              111.69032,  25.05543,       111.45356,       25.06469,    133.36166,      +6.99215,     133.53180,       +7.12515,   838403.99,  4040478.07,  4989810.96,      50.595127,       +0.537741,  109618.18,  249093.16,    2848.48,             5535.20,  -337.48,  70822.36,           73224.40,   -102.15,   -927.68,         772.82,  +3.20,  +1.22
  2,     UK003S,       1,  0.123494, 2459521.597696991172, 133.55731,   6.72674,              111.68753,  24.72655,       111.43663,       24.73628,    133.55731,      +6.72674,     133.73825,       +6.86791,   839673.99,  4037853.78,  4988349.03,      50.602711,       +0.512890,  107021.48,  246150.13,    6109.92,             8796.64,   143.40,  81001.52,           73224.40,   -106.80,   -974.08,         821.14,  +1.46,  -0.50
  3,     UK003S,       1,  0.163722, 2459521.597697456833, 133.74967,   6.53315,              111.64136,  24.45779,       111.42302,       24.46645,    133.74967,      +6.53315,     133.90756,       +6.65638,   840696.04,  4035741.84,  4987172.52,      50.608814,       +0.492838,  104932.15,  243785.75,    8734.62,            11421.35,    -9.98,  65245.66,           73224.40,    -93.26,   -841.28,         716.16,  +1.32,  -0.62
  4,     UK003S,       1,  0.203974, 2459521.597697922960, 133.94736,   6.29004,              111.62220,  24.14572,       111.40718,       24.15427,    133.94736,      +6.29004,     134.10336,       +6.41166,   841853.75,  4033349.59,  4985839.85,      50.615728,       +0.470125,  102565.98,  241115.55,   11707.69,            14394.41,   183.35,  73861.33,           72813.50,    -91.18,   -821.39,         706.99,  +0.99,  -0.92
  5,     UK003S,       1,  0.244186, 2459521.597698388156, 134.12946,   6.11227,              111.57497,  23.89569,       111.39474,       23.90302,    134.12946,      +6.11227,     134.26066,       +6.21451,   842768.14,  4031460.13,  4984787.27,      50.621190,       +0.452135,  100697.43,  239009.64,   14055.90,            16742.62,  -245.41,  58395.77,           70638.05,    -76.76,   -683.77,         593.80,  +2.07,  +0.18
  6,     UK003S,       1,  0.284366, 2459521.597698853351, 134.21963,   5.84533,              111.66564,  23.62659,       111.38159,       23.63740,    134.21963,      +5.84533,     134.42685,       +6.00607,   843717.46,  4029498.48,  4983694.48,      50.626860,       +0.433448,   98757.82,  236828.62,   16493.82,            19180.54,  -582.26,  60674.95,           68795.16,   -116.22,  -1070.25,         937.61,  +4.79,  +2.92
  0,     UK0041,       0,  0.075660, 2459521.597696438897,  67.86111, -12.70453,              191.85119,  23.95279,       191.84853,       23.95060,     67.86111,     -12.70453,      67.86362,      -12.70702,   838368.91,  4040550.57,  4989851.35,      50.594918,       +0.538454,  109689.93,  259416.50,       0.00,             5445.09,    95.19,      0.00,           67798.23,     14.84,      0.82,          11.82,  +3.41,  +1.34
  1,     UK0041,       0,  0.116048, 2459521.597696906421,  67.43966, -13.05881,              192.24597,  23.54815,       192.24648,       23.54857,     67.43966,     -13.05881,      67.43972,      -13.05832,   839453.28,  4038309.86,  4988603.10,      50.601393,       +0.517212,  107472.72,  258078.64,    2784.74,             8229.83,    90.80,  68949.76,           67798.23,     -2.86,     -0.16,           2.29,  +2.44,  +0.38
  2,     UK0041,       0,  0.156408, 2459521.597697373480,  67.04566, -13.38674,              192.61208,  23.17173,       192.61459,       23.17380,     67.04566,     -13.38674,      67.04424,      -13.38437,   840451.76,  4036246.63,  4987453.73,      50.607355,       +0.497622,  105431.50,  256867.59,    5348.91,            10793.99,  -132.23,  63532.32,           67798.23,    -13.89,     -0.77,          11.17,  +1.85,  -0.20
  3,     UK0041,       0,  0.196816, 2459521.597697841469,  66.58808, -13.76004,              193.03431,  22.74040,       193.03543,       22.74132,     66.58808,     -13.76004,      66.58798,      -13.75899,   841589.81,  4033894.99,  4986143.68,      50.614152,       +0.475297,  103105.39,  255511.44,    8271.51,            13716.59,    -0.14,  72327.23,           67798.23,     -6.15,     -0.34,           4.97,  +1.51,  -0.53
  4,     UK0041,       0,  0.237172, 2459521.597698308527,  66.18399, -14.08506,              193.40433,  22.36266,       193.40257,       22.36122,     66.18399,     -14.08506,      66.18643,      -14.08672,   842577.81,  4031853.41,  4985006.36,      50.620053,       +0.455874,  101086.33,  254355.89,   10808.77,            16253.86,  -249.79,  62872.06,           67124.66,      9.62,      0.53,           7.81,  +2.84,  +0.81
  0,     UK0045,       0,  0.000000, 2459521.597695562057, 100.21791,  16.80876,              144.03376,  51.13718,       144.04746,       51.17100,    100.21791,     +16.80876,     100.19606,      +16.83669,   836245.81,  4044937.67,  4992295.31,      50.582243,       +0.579970,  114032.24,  145412.40,       0.00,                7.17,  -117.79,      0.00,           70693.13,    -88.04,     -9.56,         125.61,  +3.05,  +2.24
  1,     UK0045,       0,  0.039996, 2459521.597696024925,  99.95631,  16.61911,              144.51780,  51.05752,       144.53387,       51.09620,     99.95631,     +16.61911,      99.93141,      +16.65107,   837251.27,  4042860.02,  4991137.89,      50.588245,       +0.560301,  111975.59,  142947.46,    2582.10,             2574.93,  -312.09,  64558.87,           70693.13,    -99.16,    -10.76,         143.92,  +1.81,  +1.03
  2,     UK0045,       0,  0.079944, 2459521.597696487326,  99.57489,  16.41971,              145.17584,  51.01025,       145.16905,       50.99426,     99.57489,     +16.41971,      99.58557,      +16.40646,   838522.17,  4040233.88,  4989674.93,      50.595833,       +0.535459,  109376.54,  139839.30,    5845.84,             5838.67,   192.91,  81699.81,           70693.13,     40.15,      4.49,          59.59,  +1.59,  +0.86
  3,     UK0045,       0,  0.119964, 2459521.597696950659,  99.32091,  16.19884,              145.66509,  50.89533,       145.67218,       50.91152,     99.32091,     +16.19884,      99.31089,      +16.21225,   839491.14,  4038231.63,  4988559.52,      50.601619,       +0.516460,  107395.32,  137473.58,    8334.22,             8327.05,   -82.42,  62178.44,           70693.13,    -40.06,     -4.42,          60.47,  +1.18,  +0.49
  4,     UK0045,       0,  0.159948, 2459521.597697413526,  98.99144,  15.97803,              146.25953,  50.80519,       146.26209,       50.81090,     98.99144,     +15.97803,      98.98839,      +15.98276,   840592.30,  4035956.21,  4987291.94,      50.608195,       +0.494873,  105144.21,  134791.31,   11162.09,            11154.92,   -15.78,  70725.06,           70214.03,    -13.87,     -1.54,          21.36,  +0.95,  +0.30
  5,     UK0045,       0,  0.199948, 2459521.597697876394,  98.66012,  15.73572,              146.86709,  50.69331,       146.87172,       50.70333,     98.66012,     +15.73572,      98.65441,      +15.74404,   841690.83,  4033686.24,  4986027.39,      50.614755,       +0.473316,  102898.93,  132121.78,   13983.19,            13976.03,    42.99,  70527.55,           70121.98,    -23.93,     -2.65,          37.58,  +0.89,  +0.29
  6,     UK0045,       0,  0.239932, 2459521.597698339261,  98.33466,  15.51731,              147.45109,  50.59943,       147.45045,       50.59809,     98.33466,     +15.51731,      98.33654,      +15.51619,   842697.71,  4031605.65,  4984868.34,      50.620769,       +0.453525,  100841.34,  129680.49,   16568.94,            16561.77,  -132.49,  64669.43,           69504.97,      3.15,      0.35,           5.05,  +1.13,  +0.57
  7,     UK0045,       0,  0.279920, 2459521.597698801663,  97.98683,  15.27284,              148.07936,  50.48625,       148.07647,       50.48030,     97.98683,     +15.27284,      97.99191,      +15.26787,   843751.28,  4029428.59,  4983655.55,      50.627062,       +0.432807,   98688.74,  127132.59,   19274.57,            19267.40,  -188.36,  67661.15,           69094.25,     13.75,      1.54,          22.45,  +1.72,  +1.20
  8,     UK0045,       0,  0.319904, 2459521.597699264530,  97.57683,  14.99280,              148.81287,  50.35717,       148.80333,       50.33811,     97.57683,     +14.99280,      97.59072,      +14.97688,   844931.61,  4026989.59,  4982296.84,      50.634113,       +0.409592,   96277.63,  124286.85,   22305.74,            22298.57,    81.58,  75809.59,           69350.21,     43.13,      4.87,          72.04,  +3.14,  +2.67

Notes
-----
- Points that have not been taken into consideration when computing the trajectory have '1' in the 'Ignore' column.
- The time already has time offsets applied to it.
- 'meas1' and 'meas2' are given input points.
- X, Y, Z are ECI (Earth-Centered Inertial) positions of projected lines of sight on the radiant line.
- Zc is the observed zenith distance of the entry angle, while the Zg is the entry zenith distance corrected for Earth's gravity.
- Latitude (deg) and Longitude (deg) are in WGS84 coordinates, while Height (m) is in the EGM96 datum. There values are coordinates of each point on the radiant line.
- Jacchia (1955) deceleration equation fit was done on the lag.
- Right ascension and declination in the table are given in the epoch of date for the corresponding JD, per every point.
- 'RA and Dec obs' are the right ascension and declination calculated from the observed values, while the 'RA and Dec line' are coordinates of the lines of sight projected on the fitted radiant line. The coordinates are in the epoch of date, and NOT J2000!. 'Azim and alt line' are thus corresponding azimuthal coordinates.
- 'Vel prev avg' is the average velocity including all previous points up to the given point. For the first 4 points this velocity is computed as the average velocity of those 4 points.