Orbital Analysis for matched events on 20211103_233909.412_UK

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Summary for Event
-----------------
shower ID -1 spo
Lg 24.42° Bg 49.41° Vg 19.65km/s
mass 0.07970g, abs. mag 1.5
best visual mag 0.8
Path Details
------------
start -4.63° 50.15° 87.43km
end   -4.56° 50.13° 73.73km

Orbit Details
-------------
Semimajor axis 3.36A.U., eccentricity 0.74, inclination 23.83°, Period 6.15Y, LA Sun 221.47°, last Perihelion 2015-10-12

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: 2459522.485525612719
Time: 2021-11-03 23:39:09.412939 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0021 and UK003K
 Convergence angle = 46.02465 deg
 R.A. = 358.87309  Dec = +53.97299 deg

Best intersection: Stations UK0021 and UK003K with Qconv = 46.02 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3457339.33 +/- 64.43 m
 Y =   2297659.93 +/- 23.34 m
 Z =   4940645.40 +/- 39.29 m
 Vx =    13328.12 +/- 106.15 m/s
 Vy =     -566.75 +/- 44.09 m/s
 Vz =    18209.26 +/- 113.64 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+4.270154e+03, +1.489743e+03, +2.560058e+03, +6.207289e+03, +2.438392e+03, +2.815914e+03
+1.489743e+03, +5.646972e+02, +8.641837e+02, +2.264208e+03, +9.392638e+02, +1.098245e+03
+2.560058e+03, +8.641837e+02, +1.623187e+03, +3.535936e+03, +1.419910e+03, +1.586366e+03
+6.207289e+03, +2.264208e+03, +3.535936e+03, +1.096225e+04, +4.281956e+03, +5.274383e+03
+2.438392e+03, +9.392638e+02, +1.419910e+03, +4.281956e+03, +1.987260e+03, +1.968809e+03
+2.815914e+03, +1.098245e+03, +1.586366e+03, +5.274383e+03, +1.968809e+03, +2.882308e+03

Timing offsets (from input data):
    UK0021: 0.000258 s
    UK003K: 0.000000 s

Reference point on the trajectory:
  Time: 2021-11-03 23:39:09.412939 UTC
  Lon     = +-4.626215 +/- 0.0002 deg
  Lat     = +50.149437 +/- 0.0002 deg
  Lat geo = +49.962569 +/- 0.0002 deg
  Ht      =   87464.61 +/- 71.96 m

  JD dynamic   = 2459522.486326353624 
  LST apparent = 33.6070031248 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 357.56507 +/- 0.2106 deg
  Dec       = +53.77337 +/- 0.1388 deg
  Azimuth   = 293.34187 +/- 0.3880 deg
  Elevation = +67.74591 +/- 0.1117 deg
  Vavg      =  22.23338 +/- 0.0827 km/s
  Vinit     =  22.57293 +/- 0.1010 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 358.63044 +/- 0.2106 deg
  Dec       = +54.13506 +/- 0.1388 deg
  Azimuth   = 294.17269 +/- 0.3880 deg
  Elevation = +68.39980 +/- 0.1117 deg
  Vavg      =  22.12992 +/- 0.0827 km/s
  Vinit     =  22.46947 +/- 0.1010 km/s
Radiant (geocentric, J2000):
  R.A.   = 354.66784 +/- 0.2592 deg
  Dec    = +53.48777 +/- 0.1413 deg
  Vg     =  19.64696 +/- 0.1164 km/s
  Vinf   =  22.57293 +/- 0.1010 km/s
  Zc     =  22.32875 +/- 0.1128 deg
  Zg     =  23.89600 +/- 0.1364 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  24.41771 +/- 0.0754 deg
  Bg     = +49.41216 +/- 0.2028 deg
  Vh     =  39.04303 +/- 0.0808 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 332.00694 +/- 0.1709 deg
  Bh     = +22.46651 +/- 0.0338 deg
  Vh_x   = -31.85861 +/- 0.1107 km/s
  Vh_y   =  16.93457 +/- 0.0630 km/s
  Vh_z   = -14.92004 +/- 0.0484 km/s
Orbit:
  La Sun = 221.473671 +/- 0.0000 deg
  a      =   3.355616 +/- 0.0745 AU
  e      =   0.741021 +/- 0.0066
  i      =  23.825626 +/- 0.0536 deg
  peri   = 224.852018 +/- 0.1404 deg
  node   = 221.472443 +/- 0.0000 deg
  Pi     =  86.324461 +/- 0.1404 deg
  q      =   0.869033 +/- 0.0013 AU
  f      = 315.149638 +/- 0.1404 deg
  M      = 355.094273 +/- 0.1802 deg
  Q      =   5.842198 +/- 0.1502 AU
  n      =   0.160342 +/- 0.0058 deg/day
  T      =   6.146939 +/- 0.2012 years
  Last perihelion JD = 2457307.873116 (2015-10-12 08:57:17.218586) +/- 73.5025 days
  Tj     =   2.537389 +/- 0.0361
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +4.350344e-05, -8.124390e-06, -4.891600e-01, +2.340654e-08, +7.774529e-04, +3.244490e-04
q   , -8.124390e-06, +1.700436e-06, +9.075169e-02, -4.194692e-09, -1.807712e-04, -5.811879e-05
Tp  , -4.891600e-01, +9.075169e-02, +5.507021e+03, -2.654482e-04, -8.624263e+00, -3.679808e+00
node, +2.340654e-08, -4.194692e-09, -2.654482e-04, +1.585995e-11, +3.838326e-07, +2.202602e-07
peri, +7.774529e-04, -1.807712e-04, -8.624263e+00, +3.838326e-07, +2.080494e-02, +5.315469e-03
i   , +3.244490e-04, -5.811879e-05, -3.679808e+00, +2.202602e-07, +5.315469e-03, +3.059012e-03

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 1.268118
 a2 = 7.720685

Mean time residuals from time vs. length:
  Station with reference time: UK003K
  Avg. res. = 1.002e-05 s
  Stddev    = 3.17e-03 s

Begin point on the trajectory:
  Lon =    -4.626058 +/- 0.0002 deg
  Lat =    50.149394 +/- 0.0002 deg
  Ht  = 87434.45 +/- 66.81 m
End point on the trajectory:
  Lon =    -4.557647 +/- 0.0001 deg
  Lat =    50.129623 +/- 0.0001 deg
  Ht  = 73729.18 +/- 15.89 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
    UK0021,   False,    -3.515726,    50.691998,   17.00,   2.721286,   6.198394,    86126.84,    73729.18,          0.018256,     13.99,     38.74,              41.80, 1.0000,    True,    True, {"ff_name": "FF_UK0021_20211103_233903_387_0566784.fits"}
    UK003K,   False,    -4.388944,    50.464439,  133.00,   0.416503,   9.930880,    87434.45,    74185.67,          0.005721,      4.04,      8.08,              31.55, 1.0000,    True,    True, {"ff_name": "FF_UK003K_20211103_233909_462_0562176.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,     UK0021,       0,  0.062549, 2459522.485526336823, 356.37846,  12.05083,              232.75245,  40.35136,       232.75465,       40.35039,    356.37846,     +12.05083,     356.37675,      +12.05087,  3456485.87,  2297696.22,  4939479.38,      50.147513,       -4.619538,   86126.84,  131793.53,       0.00,             1445.45,    25.80,      0.00,           22418.94,     -4.18,     -1.50,           6.96,  +3.78,  +3.18
  1,     UK0021,       0,  0.102749, 2459522.485526802018, 356.36009,  11.80323,              232.60562,  40.12985,       232.59737,       40.13347,    356.36009,     +11.80323,     356.36795,      +11.80310,  3455984.02,  2297717.56,  4938793.73,      50.146381,       -4.615625,   85340.20,  131167.66,     849.96,             2295.41,   -31.67,  21143.26,           22418.94,     15.66,      5.64,          26.18,  +3.37,  +2.78
  2,     UK0021,       0,  0.142977, 2459522.485527267680, 356.30651,  11.53192,              232.48254,  39.87009,       232.42537,       39.89514,    356.30651,     +11.53192,     356.35866,      +11.53094,  3455438.12,  2297740.78,  4938047.91,      50.145149,       -4.611353,   84484.54,  130489.04,    1774.50,             3219.95,   -15.19,  22982.50,           22418.94,    108.21,     39.12,         181.88,  +2.84,  +2.26
  3,     UK0021,       0,  0.183185, 2459522.485527733341, 356.31885,  11.25713,              232.28604,  39.64022,       232.25318,       39.65462,    356.31885,     +11.25713,     356.34930,      +11.25657,  3454893.45,  2297763.94,  4937303.77,      50.143919,       -4.607090,   83630.79,  129814.92,    2696.97,             4142.42,    -0.34,  22942.45,           22418.94,     62.05,     22.40,         104.82,  +2.10,  +1.53
  4,     UK0021,       0,  0.223425, 2459522.485528199002, 356.30879,  10.95612,              232.09806,  39.37628,       232.06524,       39.39064,    356.30879,     +10.95612,     356.33941,      +10.95557,  3454302.24,  2297789.08,  4936496.04,      50.142584,       -4.602447,   82704.10,  129085.98,    3698.27,             5143.72,    92.63,  24883.20,           22983.24,     61.77,     22.31,         104.94,  +2.51,  +1.96
  5,     UK0021,       0,  0.263609, 2459522.485528664198, 356.34064,  10.70383,              231.89761,  39.17490,       231.91009,       39.16944,    356.34064,     +10.70383,     356.33044,      +10.70403,  3453813.45,  2297809.86,  4935828.24,      50.141480,       -4.598637,   81937.95,  128487.28,    4526.10,             5971.54,    13.39,  20600.92,           22804.38,    -23.43,     -8.44,          39.98,  +2.54,  +2.00
  6,     UK0021,       0,  0.303833, 2459522.485529129393, 356.31147,  10.42942,              231.75045,  38.92378,       231.74134,       38.92776,    356.31147,     +10.42942,     356.32100,      +10.42927,  3453284.58,  2297832.35,  4935105.67,      50.140285,       -4.594500,   81108.97,  127841.69,    5421.82,             6867.27,     1.13,  22268.32,           22683.03,     17.07,      6.16,          29.27,  +2.33,  +1.80
  7,     UK0021,       0,  0.344053, 2459522.485529595055, 356.29630,  10.15422,              231.58863,  38.67873,       231.57345,       38.68535,    356.29630,     +10.15422,     356.31153,      +10.15396,  3452759.95,  2297854.66,  4934388.92,      50.139099,       -4.590397,   80286.66,  127204.29,    6310.33,             7755.78,   -18.23,  22091.40,           22583.16,     28.34,     10.24,          48.86,  +2.30,  +1.78
  8,     UK0021,       0,  0.384285, 2459522.485530060716, 356.30785,   9.85282,              231.38208,  38.42401,       231.39079,       38.42022,    356.30785,      +9.85282,     356.30154,       +9.85297,  3452192.23,  2297878.80,  4933613.28,      50.137814,       -4.585941,   79396.80,  126517.27,    7271.85,             8717.30,    35.13,  23899.24,           22624.33,    -16.22,     -5.85,          28.10,  +2.46,  +1.95
  9,     UK0021,       0,  0.424481, 2459522.485530525912, 356.29308,   9.60622,              231.24045,  38.20339,       231.24298,       38.20229,    356.29308,      +9.60622,     356.29256,       +9.60626,  3451731.65,  2297898.39,  4932984.02,      50.136772,       -4.582358,   78674.85,  125963.84,    8051.91,             9497.36,   -92.15,  19406.46,           22469.86,     -4.69,     -1.69,           8.16,  +2.26,  +1.76
 10,     UK0021,       0,  0.464713, 2459522.485530991573, 356.29693,   9.30592,              231.04551,  37.94523,       231.06341,       37.93744,    356.29693,      +9.30592,     356.28253,       +9.30622,  3451176.67,  2297921.99,  4932225.79,      50.135516,       -4.578004,   77804.97,  125298.65,    8991.84,            10437.29,   -60.38,  23362.73,           22426.20,    -33.18,    -11.97,          58.06,  +2.35,  +1.86
 11,     UK0021,       0,  0.504937, 2459522.485531457234, 356.26696,   9.03552,              230.90732,  37.69608,       230.90298,       37.69796,    356.26696,      +9.03552,     356.27303,       +9.03544,  3450680.91,  2297943.07,  4931548.48,      50.134393,       -4.574133,   77027.91,  124708.14,    9831.46,            11276.91,  -128.73,  20873.66,           22341.29,      8.02,      2.90,          14.11,  +2.56,  +2.08
 12,     UK0021,       0,  0.545181, 2459522.485531922895, 356.27661,   8.71922,              230.69862,  37.42633,       230.71636,       37.41863,    356.27661,      +8.71922,     356.26265,       +8.71952,  3450108.22,  2297967.42,  4930766.05,      50.133096,       -4.569633,   76130.28,  124028.37,   10801.39,            12246.84,   -67.23,  24101.22,           22348.03,    -32.69,    -11.80,          57.79,  +3.04,  +2.57
 13,     UK0021,       0,  0.585385, 2459522.485532388091, 356.24994,   8.46892,              230.57154,  37.19582,       230.57033,       37.19635,    356.24994,      +8.46892,     356.25349,       +8.46889,  3449658.50,  2297986.54,  4930151.63,      50.132077,       -4.566135,   75425.36,  123498.77,   11563.05,            13008.50,  -213.09,  18944.80,           22255.06,      2.22,      0.80,           3.94,  +3.15,  +2.69
 14,     UK0021,       0,  0.625681, 2459522.485532854684, 356.24639,   8.09382,              230.34340,  36.86788,       230.35114,       36.86453,    356.24639,      +8.09382,     356.24190,       +8.09395,  3448992.40,  2298014.87,  4929241.58,      50.130567,       -4.560872,   74381.36,  122715.29,   12691.18,            14136.63,     5.45,  27996.21,           22338.46,    -14.17,     -5.12,          25.33,  +3.87,  +3.43
 15,     UK0021,       0,  0.665869, 2459522.485533319879, 356.23172,   7.85711,              230.21382,  36.65467,       230.21551,       36.65394,    356.23172,      +7.85711,     356.23295,       +7.85714,  3448576.34,  2298032.56,  4928673.15,      50.129623,       -4.557647,   73729.18,  122231.29,   13395.83,            14841.28,  -197.06,  17533.85,           22288.34,     -3.08,     -1.12,           5.53,  +5.32,  +4.88
  0,     UK003K,       0,  0.000000, 2459522.485525612719,  22.12719,  27.80676,              205.83451,  65.65645,       205.82501,       65.66054,     22.12719,     +27.80676,      22.13285,      +27.80942,  3457320.09,  2297660.75,  4940619.11,      50.149394,       -4.626058,   87434.45,   95685.62,       0.00,               32.59,    24.86,      0.00,           22898.23,      8.45,     -4.24,          20.38,  +3.95,  +4.05
  1,     UK003K,       0,  0.040164, 2459522.485526077449,  22.26519,  27.55905,              205.36784,  65.45895,       205.35594,       65.46403,     22.26519,     +27.55905,      22.27242,      +27.56237,  3456799.38,  2297682.89,  4939907.70,      50.148220,       -4.621993,   86618.25,   94937.72,     881.89,              914.48,     0.13,  21957.12,           22898.23,     10.51,     -5.26,          25.53,  +2.97,  +3.08
  2,     UK003K,       0,  0.080324, 2459522.485526542179,  22.41579,  27.31093,              204.88122,  65.26331,       204.88432,       65.26199,     22.41579,     +27.31093,      22.41428,      +27.31007,  3456276.21,  2297705.14,  4939192.94,      50.147040,       -4.617907,   85798.21,   94188.51,    1767.94,             1800.53,   -20.35,  22063.09,           22898.23,     -2.72,      1.36,           6.66,  +1.96,  +2.09
  3,     UK003K,       0,  0.120516, 2459522.485527007375,  22.57104,  27.01661,              204.35883,  65.02354,       204.34822,       65.02800,     22.57104,     +27.01661,      22.57783,      +27.01955,  3455684.10,  2297730.32,  4938383.97,      50.145704,       -4.613260,   84870.09,   93343.08,    2770.77,             2803.36,    75.23,  24950.88,           22898.23,      9.21,     -4.61,          22.76,  +1.67,  +1.82
  4,     UK003K,       0,  0.160672, 2459522.485527472571,  22.71805,  26.77739,              203.89820,  64.83298,       203.90725,       64.82920,     22.71805,     +26.77739,      22.71337,      +26.77488,  3455194.12,  2297751.15,  4937714.55,      50.144598,       -4.609442,   84102.08,   92646.13,    3600.60,             3633.20,    -1.37,  20665.33,           22629.33,     -7.80,      3.90,          19.41,  +1.23,  +1.40
  5,     UK003K,       0,  0.200840, 2459522.485527937301,  22.87053,  26.51766,              203.41840,  64.62304,       203.43956,       64.61427,     22.87053,     +26.51766,      22.85887,      +26.51182,  3454675.59,  2297773.20,  4937006.12,      50.143428,       -4.605391,   83289.30,   91910.74,    4478.81,             4511.40,   -29.88,  21863.36,           22443.08,    -18.10,      9.05,          45.42,  +1.34,  +1.52
  6,     UK003K,       0,  0.241032, 2459522.485528402496,  23.00907,  26.23355,              202.95690,  64.38499,       202.95392,       64.38622,     23.00907,     +26.23355,      23.01184,      +26.23437,  3454137.80,  2297796.07,  4936271.37,      50.142213,       -4.601183,   82446.33,   91150.55,    5389.63,             5422.23,   -26.30,  22661.82,           22400.01,      2.53,     -1.26,           6.40,  +1.23,  +1.43
  7,     UK003K,       0,  0.281224, 2459522.485528867692,  23.17863,  25.93851,              202.43375,  64.14284,       202.44089,       64.13992,     23.17863,     +25.93851,      23.17560,      +25.93654,  3453570.57,  2297820.19,  4935496.41,      50.140931,       -4.596734,   81557.25,   90351.58,    6350.30,             6382.89,    27.11,  23901.93,           22507.29,     -6.02,      3.01,          15.36,  +1.16,  +1.38
  8,     UK003K,       0,  0.321432, 2459522.485529332887,  23.33916,  25.62457,              201.92465,  63.87886,       201.91678,       63.88205,     23.33916,     +25.62457,      23.34515,      +25.62674,  3452991.30,  2297844.82,  4934705.00,      50.139622,       -4.592186,   80649.30,   89538.77,    7331.37,             7363.96,   100.57,  24399.78,           22683.64,      6.59,     -3.29,          16.96,  +1.06,  +1.30
  9,     UK003K,       0,  0.361608, 2459522.485529798083,  23.48712,  25.35665,              201.47490,  63.65503,       201.47186,       63.65626,     23.48712,     +25.35665,      23.49043,      +25.35749,  3452496.70,  2297865.85,  4934029.25,      50.138503,       -4.588326,   79874.03,   88847.63,    8169.05,             8201.65,    31.36,  20850.42,           22673.39,      2.53,     -1.26,           6.57,  +1.18,  +1.44
 10,     UK003K,       0,  0.401804, 2459522.485530263279,  23.64617,  25.06161,              200.99405,  63.40640,       200.99122,       63.40754,     23.64617,     +25.06161,      23.64951,      +25.06239,  3451963.50,  2297888.53,  4933300.78,      50.137297,       -4.584151,   79038.29,   88105.18,    9072.09,             9104.68,    27.05,  22465.79,           22658.36,      2.34,     -1.16,           6.11,  +1.16,  +1.43
 11,     UK003K,       0,  0.441984, 2459522.485530728474,  23.80082,  24.78748,              200.54002,  63.17580,       200.54871,       63.17235,     23.80082,     +24.78748,      23.79755,      +24.78510,  3451470.87,  2297909.48,  4932627.73,      50.136182,       -4.580306,   78266.11,   87421.95,    9906.43,             9939.02,   -45.59,  20765.03,           22576.87,     -7.13,      3.55,          18.81,  +0.87,  +1.16
 12,     UK003K,       0,  0.482188, 2459522.485531193670,  23.97075,  24.47794,              200.04361,  62.91304,       200.05882,       62.90704,     23.97075,     +24.47794,      23.96380,      +24.47377,  3450926.96,  2297932.61,  4931884.63,      50.134951,       -4.576043,   77413.58,   86670.39,   10827.61,            10860.20,   -31.93,  22912.69,           22538.70,    -12.41,      6.18,          33.00,  +0.84,  +1.15
 13,     UK003K,       0,  0.522400, 2459522.485531658866,  24.11476,  24.16621,              199.60349,  62.64127,       199.59012,       62.64652,     24.11476,     +24.16621,      24.12483,      +24.16987,  3450405.30,  2297954.79,  4931171.93,      50.133769,       -4.571959,   76595.93,   85952.65,   11711.10,            11743.70,   -56.13,  21970.98,           22498.47,     10.85,     -5.39,          29.08,  +0.98,  +1.31
 14,     UK003K,       0,  0.562584, 2459522.485532124061,  24.26800,  23.88578,              199.16779,  62.40083,       199.16303,       62.40268,     24.26800,     +23.88578,      24.27316,      +23.88708,  3449927.88,  2297975.09,  4930519.66,      50.132687,       -4.568236,   75847.60,   85298.57,   12519.67,            12552.27,  -154.63,  20121.66,           22412.90,      3.84,     -1.91,          10.36,  +1.23,  +1.58
 15,     UK003K,       0,  0.602768, 2459522.485532589257,  24.41714,  23.60805,              198.74699,  62.16112,       198.74848,       62.16054,     24.41714,     +23.60805,      24.41878,      +23.60764,  3449463.45,  2297994.84,  4929885.14,      50.131635,       -4.564617,   75119.60,   84664.79,   13306.26,            13338.85,  -275.12,  19574.63,           22293.04,     -1.20,      0.60,           3.26,  +2.14,  +2.50
 16,     UK003K,       0,  0.643008, 2459522.485533054918,  24.61022,  23.24408,              198.20833,  61.84501,       198.21264,       61.84334,     24.61022,     +23.24408,      24.61035,      +23.24290,  3448867.58,  2298020.18,  4929071.05,      50.130284,       -4.559927,   74185.67,   83854.89,   14315.44,            14348.03,  -174.28,  25078.97,           22265.49,     -3.45,      1.71,           9.47,  +1.64,  +2.02

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.