Orbital Analysis for matched events on 20210929_033528.759_UK

Summary for Event
-----------------
shower ID 424 SOL
Lg 104.97° Bg 25.29° Vg 66.00km/s
mass 0.01316g, abs. mag 0.2
Path Details
------------
start -1.32° 51.80° 111.82km
end   -1.43° 51.78° 98.71km

Orbit Details
-------------
Semimajor axis 20.05A.U., eccentricity 0.95, inclination 136.01°, Period 89.77Y, LA Sun 185.92°, last Perihelion 2021-09-11

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: 2459486.649638421368
Time: 2021-09-29 03:35:28.770509 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000S and UK001Z
 Convergence angle = 43.92745 deg
 R.A. = 110.60256  Dec = +47.31980 deg

Best intersection: Stations UK000S and UK001Z with Qconv = 43.93 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   1969785.20 +/- 24.33 m
 Y =   3506590.42 +/- 32.01 m
 Z =   5076884.64 +/- 67.79 m
 Vx =   -15688.04 +/- 102.24 m/s
 Vy =    42190.13 +/- 772.43 m/s
 Vz =    49522.69 +/- 798.29 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+6.331846e+02, -4.780577e+02, -1.240320e+03, +1.990927e+03, -4.377200e+02, -4.318159e+03
-4.780577e+02, +1.099901e+03, +6.297273e+02, +8.163353e+02, -1.385019e+03, -6.538492e+03
-1.240320e+03, +6.297273e+02, +4.915424e+03, -1.030025e+04, +5.925384e+03, +4.139845e+04
+1.990927e+03, +8.163353e+02, -1.030025e+04, +3.634641e+04, -2.874065e+04, -1.449566e+05
-4.377200e+02, -1.385019e+03, +5.925384e+03, -2.874065e+04, +8.101636e+04, +1.358772e+05
-4.318159e+03, -6.538492e+03, +4.139845e+04, -1.449566e+05, +1.358772e+05, +6.357678e+05

Timing offsets (from input data):
    UK000S: -0.000160 s
    UK001Z: 0.000000 s
    UK002W: 0.000000 s
    UK003R: 0.000000 s

Reference point on the trajectory:
  Time: 2021-09-29 03:35:28.770509 UTC
  Lon     = +-1.317155 +/- 0.0005 deg
  Lat     = +51.797260 +/- 0.0004 deg
  Lat geo = +51.613316 +/- 0.0004 deg
  Ht      =  111937.18 +/- 54.88 m

  JD dynamic   = 2459486.650439288467 
  LST apparent = 60.6754214299 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 110.39722 +/- 0.1874 deg
  Dec       = +47.73149 +/- 0.3391 deg
  Azimuth   =  77.26806 +/- 0.6696 deg
  Elevation = +58.25930 +/- 0.0726 deg
  Vavg      =  64.80278 +/- 0.4919 km/s
  Vinit     =  66.92248 +/- 0.7169 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 110.63738 +/- 0.1874 deg
  Dec       = +47.58980 +/- 0.3391 deg
  Azimuth   =  77.37241 +/- 0.6696 deg
  Elevation = +58.05143 +/- 0.0726 deg
  Vavg      =  64.95375 +/- 0.4919 km/s
  Vinit     =  67.07345 +/- 0.7169 km/s
Radiant (geocentric, J2000):
  R.A.   = 110.29756 +/- 0.1846 deg
  Dec    = +47.67418 +/- 0.3432 deg
  Vg     =  65.99651 +/- 0.7273 km/s
  Vinf   =  66.92248 +/- 0.7169 km/s
  Zc     =  31.78170 +/- 0.0712 deg
  Zg     =  32.00896 +/- 0.0758 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 104.97112 +/- 0.0893 deg
  Bg     = +25.28586 +/- 0.3561 deg
  Vh     =  41.55488 +/- 0.7979 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 112.87653 +/- 0.1960 deg
  Bh     = +42.72031 +/- 0.3228 deg
  Vh_x   =  11.86816 +/- 0.1804 km/s
  Vh_y   = -28.12800 +/- 0.5034 km/s
  Vh_z   = -28.19167 +/- 0.6427 km/s
Orbit:
  La Sun = 185.923079 +/- nan deg
  a      =  20.048710 +/- 8.3440 AU
  e      =   0.952381 +/- 0.0685
  i      = 136.009232 +/- 0.3400 deg
  peri   = 154.633367 +/- 1.4312 deg
  node   = 185.924301 +/- 0.0000 deg
  Pi     = 340.557668 +/- 1.4312 deg
  q      =   0.954693 +/- 0.0031 AU
  f      =  25.365680 +/- 1.4312 deg
  M      =   0.194856 +/- 0.9349 deg
  Q      =  39.142726 +/- 16.6855 AU
  n      =   0.010979 +/- 0.0415 deg/day
  T      =  89.769805 +/- 51.5004 years
  Last perihelion JD = 2459468.902832 (2021-09-11 09:40:04.653060) +/- 1.3386 days
  Tj     =  -0.601544 +/- 0.3929
Shower association:
  IAU No.  =  424
  IAU code =  SOL

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +5.151257e-03, +2.263048e-04, +1.004881e-01, +4.638996e-09, +1.870653e-03, -1.958994e-04
q   , +2.263048e-04, +1.041197e-05, +4.493462e-03, +1.702689e-10, +8.435675e-05, -7.191761e-06
Tp  , +1.004881e-01, +4.493462e-03, +1.978810e+00, +9.166416e-08, +3.693305e-02, -3.870218e-03
node, +4.638996e-09, +1.702689e-10, +9.166416e-08, +2.148383e-14, +1.626392e-09, -9.083621e-10
peri, +1.870653e-03, +8.435675e-05, +3.693305e-02, +1.626392e-09, +6.904861e-04, -6.867432e-05
i   , -1.958994e-04, -7.191761e-06, -3.870218e-03, -9.083621e-10, -6.867432e-05, +3.840792e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.478058
 a2 = 27.685586

Mean time residuals from time vs. length:
  Station with reference time: UK001Z
  Avg. res. = 1.216e-05 s
  Stddev    = 3.49e-03 s

Begin point on the trajectory:
  Lon =    -1.318203 +/- 0.0003 deg
  Lat =    51.797113 +/- 0.0004 deg
  Ht  = 111815.21 +/- 51.68 m
End point on the trajectory:
  Lon =    -1.432131 +/- 0.0003 deg
  Lat =    51.781234 +/- 0.0006 deg
  Ht  = 98705.91 +/- 61.71 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
    UK000S,   False,    -1.778230,    50.857470,   24.00,   0.168058,  32.808681,   111815.21,    98705.91,          0.009889,     14.53,     22.29,              37.64, 1.0000,    True,    True, {"ff_name": "FF_UK000S_20210929_033523_399_0819712.fits"}
    UK001Z,   False,    -2.949729,    50.877448,   82.00,   0.000000,   0.000000,   110219.86,    98889.45,          0.010085,      6.35,     31.92,              28.46, 1.0000,    True,    True, {"ff_name": "FF_UK001Z_20210929_033528_479_0819456.fits"}
    UK002W,    True,    -2.374601,    51.371449,   48.00,   0.000000,   0.000000,   114678.45,    96433.45,          0.051630,       nan,       nan,              12.70, 0.0000,    True,    True, {"ff_name": "FF_UK002W_20210929_033521_972_0823040.fits"}
    UK003R,    True,    -2.379340,    51.361330,  169.00,   0.000000,   0.000000,   114425.72,    97793.89,          0.033741,       nan,       nan,              13.12, 0.0000,    True,    True, {"ff_name": "FF_UK003R_20210929_033529_377_0429824.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,     UK000S,       0,  0.010725, 2459486.649638547562, 171.55957,  77.23452,               16.88482,  44.88112,        16.87215,       44.89126,    171.55957,     +77.23452,     171.54421,      +77.24762,  1969818.82,  3506500.01,  5076778.52,      51.797113,       -1.318203,  111815.21,  157046.17,       0.00,              143.40,   139.49,      0.00,           66077.08,    -31.09,     20.25,          48.73,  +2.19,  +1.21
  1,     UK000S,       0,  0.051137, 2459486.649639015086, 174.12671,  77.36572,               16.27874,  44.49382,        16.26065,       44.50816,    174.12671,     +77.36572,     174.10850,      +77.38459,  1970419.86,  3504883.62,  5074881.20,      51.794484,       -1.337120,  109634.86,  155017.43,    2563.94,             2707.34,    -1.05,  63444.96,           66077.08,    -43.74,     28.49,          69.46,  +1.13,  +0.18
  2,     UK000S,       0,  0.091581, 2459486.649639483076, 177.02220,  77.50873,               15.58806,  44.07843,        15.58928,       44.07747,    177.02220,     +77.50873,     177.02355,      +77.50745,  1971071.56,  3503130.99,  5072823.97,      51.791629,       -1.357629,  107271.03,  152836.27,    5343.98,             5487.39,    72.39,  68738.10,           66077.08,      2.90,     -1.89,           4.68,  +0.67,  -0.25
  3,     UK000S,       0,  0.132025, 2459486.649639951531, 179.91151,  77.59775,               14.94309,  43.65484,        14.94408,       43.65407,    179.91151,     +77.59775,     179.91261,      +77.59671,  1971689.33,  3501469.63,  5070873.86,      51.788918,       -1.377091,  105030.58,  150786.98,    7979.26,             8122.66,     1.05,  65158.62,           66077.08,      2.32,     -1.51,           3.79,  +0.51,  -0.38
  4,     UK000S,       0,  0.172493, 2459486.649640419520, 183.03347,  77.66561,               14.25750,  43.20343,        14.26495,       43.19767,    183.03347,     +77.66561,     183.03638,      +77.65771,  1972331.45,  3499742.76,  5068846.86,      51.786094,       -1.397324,  102702.09,  148676.76,   10718.44,            10861.85,    32.01,  67687.66,           66396.29,     17.19,    -11.22,          28.48,  +0.32,  -0.54
  5,     UK000S,       0,  0.212933, 2459486.649640887976, 185.91468,  77.67677,               13.65718,  42.77251,        13.65175,       42.77668,    185.91468,     +77.67677,     185.91531,      +77.68253,  1972903.51,  3498204.30,  5067041.03,      51.783573,       -1.415379,  100627.90,  146814.24,   13158.76,            13302.16,  -234.01,  60344.17,           65622.89,    -12.37,      8.07,          20.75,  +0.87,  +0.04
  6,     UK000S,       0,  0.253341, 2459486.649641355500, 188.65419,  77.68390,               13.07155,  42.37795,        13.07675,       42.37399,    188.65419,     +77.68390,     188.65431,      +77.67838,  1973433.65,  3496778.58,  5065367.52,      51.781234,       -1.432131,   98705.91,  145103.52,   15420.26,            15563.66,  -676.72,  55966.64,           64313.12,     11.70,     -7.64,          19.86,  +2.68,  +1.87
  0,     UK001Z,       1,  0.000000, 2459486.649638421368, 155.19987,  52.76137,               47.42846,  35.21717,        47.39092,       35.23609,    155.19987,     +52.76137,     155.20831,      +52.79704,  1969792.09,  3506571.89,  5076862.89,      51.797229,       -1.317324,  111912.18,  190592.61,       0.00,               29.39,   743.23,      0.00,           60216.56,   -117.52,    -23.54,         129.71,  +4.64,  +3.24
  1,     UK001Z,       0,  0.040248, 2459486.649638887029, 155.67721,  52.73995,               47.22169,  34.98197,        47.20244,       34.99167,    155.67721,     +52.73995,     155.68189,      +52.75826,  1970258.59,  3505317.33,  5075390.29,      51.795190,       -1.332042,  110219.86,  188840.82,    1989.99,             2019.39,    39.73,  49443.29,           60216.56,    -59.85,    -11.94,          66.66,  +2.92,  +1.54
  2,     UK001Z,       0,  0.080580, 2459486.649639354087, 156.31329,  52.69809,               46.95718,  34.66095,        46.95259,       34.66327,    156.31329,     +52.69809,     156.31477,      +52.70247,  1970870.32,  3503672.20,  5073459.24,      51.792511,       -1.351300,  108000.94,  186553.30,    4599.51,             4628.91,   -49.87,  64700.99,           60216.56,    -14.16,     -2.82,          15.96,  +1.30,  -0.05
  3,     UK001Z,       0,  0.120924, 2459486.649639821146, 156.96431,  52.64224,               46.69666,  34.32500,        46.69743,       34.32462,    156.96431,     +52.64224,     156.96461,      +52.64152,  1971484.86,  3502019.50,  5071519.30,      51.789816,       -1.370657,  105772.08,  184264.06,    7221.05,             7250.45,  -128.25,  64979.68,           60216.56,      2.33,      0.46,           2.66,  +0.98,  -0.35
  4,     UK001Z,       0,  0.161280, 2459486.649640288204, 157.63194,  52.57220,               46.43903,  33.97311,        46.43623,       33.97451,    157.63194,     +52.57220,     157.63339,      +52.57486,  1972103.58,  3500355.57,  5069566.18,      51.787096,       -1.390155,  103528.36,  181968.55,    9860.40,             9889.79,  -189.62,  65401.61,           61880.66,     -8.43,     -1.67,           9.74,  +0.66,  -0.64
  5,     UK001Z,       0,  0.201652, 2459486.649640755262, 158.33562,  52.51433,               46.15066,  33.61387,        46.16474,       33.60680,    158.33562,     +52.51433,     158.33235,      +52.50087,  1972736.01,  3498654.77,  5067569.79,      51.784312,       -1.410093,  101235.22,  179632.28,   12558.23,            12587.62,  -193.60,  66824.12,           63062.81,     42.11,      8.33,          49.29,  +0.94,  -0.33
  6,     UK001Z,       0,  0.242048, 2459486.649641222786, 159.06054,  52.41157,               45.88957,  33.21620,        45.88214,       33.21992,    159.06054,     +52.41157,     159.06385,      +52.41868,  1973383.03,  3496914.71,  5065527.31,      51.781457,       -1.430499,   98889.45,  177253.06,   15318.33,            15347.72,  -136.89,  68326.20,           64049.60,    -21.98,     -4.36,          26.07,  +4.20,  +2.96
  0,     UK002W,       1, -0.033549, 2459486.649638033006, 126.25126,  55.39768,               57.04983,  51.59385,        57.07477,       51.57239,    126.25126,     +55.39768,     126.27542,      +55.37509,  1969029.65,  3508622.35,  5079269.72,      51.800556,       -1.293416,  114678.45,  145520.35,       0.00,             3223.08,  6182.12,     -0.00,           66541.33,     66.93,     -6.49,          95.31,  +5.88,  +5.07
  1,     UK002W,       1,  0.006487, 2459486.649638496339, 126.56790,  55.51304,               56.76726,  51.47282,        56.79384,       51.45005,    126.56790,     +55.51304,     126.59367,      +55.48896,  1969609.19,  3507063.77,  5077440.26,      51.798028,       -1.311648,  112575.73,  143101.04,    2472.24,              750.84,  1030.57,  61750.40,           66541.33,     69.98,     -6.82,         101.35,  +2.34,  +1.56
  2,     UK002W,       1,  0.046535, 2459486.649638960138, 126.92226,  55.62834,               56.47250,  51.33274,        56.49142,       51.31664,    126.92226,     +55.62834,     126.94061,      +55.61120,  1970215.60,  3505432.94,  5075525.99,      51.795378,       -1.330728,  110375.79,  140572.04,    5059.09,             1836.01,  -564.37,  64593.68,           66541.33,     48.77,     -4.73,          71.89,  +1.61,  +0.87
  3,     UK002W,       1,  0.086559, 2459486.649639423005, 127.31035,  55.79798,               56.08710,  51.19702,        56.13477,       51.15654,    127.31035,     +55.79798,     127.35639,      +55.75471,  1970909.28,  3503567.43,  5073336.26,      51.792341,       -1.352541,  107859.63,  137682.91,    8018.18,             4795.10,  -283.78,  73932.94,           66541.33,    120.33,    -11.99,         181.17,  +0.96,  +0.27
  4,     UK002W,       1,  0.126599, 2459486.649639886804, 127.73171,  55.95847,               55.70522,  51.04156,        55.76713,       50.98922,    127.73171,     +55.95847,     127.79120,      +55.90221,  1971599.84,  3501710.27,  5071156.33,      51.789311,       -1.374272,  105355.08,  134809.94,   10964.03,             7740.95,   -17.51,  73572.63,           68621.71,    152.73,    -15.43,         234.87,  +0.87,  +0.22
  5,     UK002W,       1,  0.166643, 2459486.649640350137, 128.17332,  56.11774,               55.31983,  50.87634,        55.39164,       50.81593,    128.17332,     +56.11774,     128.24191,      +56.05239,  1972280.82,  3499878.92,  5069006.70,      51.786316,       -1.395717,  102885.69,  131980.23,   13868.93,            10645.86,   207.56,  72542.88,           69776.40,    173.09,    -17.66,         271.91,  +0.72,  +0.12
  6,     UK002W,       1,  0.206687, 2459486.649640813470, 128.58189,  56.26156,               54.96988,  50.72320,        55.04952,       50.65653,    128.58189,     +56.26156,     128.65751,      +56.18901,  1972880.10,  3498267.26,  5067114.93,      51.783676,       -1.414620,  100712.80,  129492.20,   16425.37,            13202.29,    84.15,  63840.65,           69552.68,    187.97,    -19.33,         300.99,  +0.99,  +0.43
  7,     UK002W,       1,  0.246767, 2459486.649641277269, 129.05807,  56.37667,               54.63973,  50.52542,        54.68781,       50.48557,    129.05807,     +56.37667,     129.10347,      +56.33287,  1973494.01,  3496616.24,  5065176.97,      51.780967,       -1.433991,   98487.12,  126946.63,   19044.23,            15821.16,    20.76,  65340.93,           69108.09,    110.73,    -11.15,         180.82,  +2.27,  +1.75
  8,     UK002W,       1,  0.286867, 2459486.649641741533, 129.54116,  56.46128,               54.35219,  50.31331,        54.34299,       50.32084,    129.54116,     +56.46128,     129.53406,      +56.46965,  1974060.55,  3495092.65,  5063388.58,      51.778462,       -1.451891,   96433.45,  124599.96,   21460.98,            18237.90,  -246.09,  60267.87,           68310.35,    -20.67,      2.00,          34.37,  +3.97,  +3.49
  0,     UK003R,       1, -0.019522, 2459486.649638195522, 127.04514,  55.51613,               56.58232,  51.21702,        56.54759,       51.24608,    127.04514,     +55.51613,     127.01278,      +55.54749,  1969099.30,  3508435.03,  5079049.85,      51.800253,       -1.295645,  114425.72,  145690.43,       0.00,             2925.95,  4946.25,     -0.00,           75567.98,    -91.94,      7.96,         130.65,  +3.09,  +2.27
  1,     UK003R,       1,  0.020698, 2459486.649638660718, 127.47408,  55.65551,               56.22675,  51.04846,        56.18664,       51.08181,    127.47408,     +55.65551,     127.43725,      +55.69175,  1969830.77,  3506467.88,  5076740.80,      51.797060,       -1.318616,  111771.86,  142644.25,    3120.33,              194.38,  -476.94,  77581.49,           75567.98,   -103.68,      8.97,         150.48,  +1.65,  +0.88
  2,     UK003R,       1,  0.060922, 2459486.649639126379, 127.90182,  55.81499,               55.84376,  50.88953,        55.81732,       50.91142,    127.90182,     +55.81499,     127.87788,      +55.83892,  1970553.21,  3504525.00,  5074460.26,      51.793901,       -1.341321,  109151.15,  139639.05,    6202.14,             3276.19,   -87.02,  76616.29,           75567.98,    -66.81,      5.88,          99.06,  +1.27,  +0.54
  3,     UK003R,       1,  0.101146, 2459486.649639592040, 128.33705,  55.95826,               55.48336,  50.72150,        55.45705,       50.74316,    128.33705,     +55.95826,     128.31361,      +55.98210,  1971233.60,  3502695.21,  5072312.45,      51.790918,       -1.362728,  106683.32,  136811.77,    9104.58,             6178.63,   123.54,  72157.01,           75567.98,    -64.99,      5.74,          98.36,  +1.19,  +0.51
  4,     UK003R,       1,  0.141330, 2459486.649640057236, 128.70877,  56.04205,               55.23250,  50.56364,        55.17460,       50.61090,    128.70877,     +56.04205,     128.65761,      +56.09450,  1971749.40,  3501308.06,  5070684.21,      51.788654,       -1.379006,  104812.70,  134669.26,   11304.90,             8378.95,  -365.37,  54755.90,           71103.42,   -140.22,     12.11,         215.56,  +1.02,  +0.37
  5,     UK003R,       1,  0.181574, 2459486.649640522897, 129.18306,  56.23426,               54.79057,  50.39720,        54.76784,       50.41571,    129.18306,     +56.23426,     129.16357,      +56.25490,  1972472.49,  3499363.44,  5068401.63,      51.785473,       -1.401771,  102190.67,  131671.71,   14389.47,            11463.52,    25.98,  76646.81,           70619.58,    -53.80,      4.81,          84.62,  +1.14,  +0.54
  6,     UK003R,       1,  0.221818, 2459486.649640988559, 129.66283,  56.39058,               54.40034,  50.21517,        54.38338,       50.22892,    129.66283,     +56.39058,     129.64879,      +56.40601,  1973131.48,  3497591.22,  5066321.40,      51.782568,       -1.422545,   99801.42,  128943.19,   17200.58,            14274.63,   143.87,  69851.76,           70364.48,    -39.25,      3.54,          63.04,  +2.01,  +1.46
  7,     UK003R,       1,  0.262026, 2459486.649641454220, 130.08252,  56.52850,               54.05867,  50.05759,        54.04921,       50.06523,    130.08252,     +56.52850,     130.07532,      +56.53712,  1973685.24,  3496101.97,  5064573.31,      51.780122,       -1.440039,   97793.89,  126652.33,   19562.86,            16636.91,  -184.68,  58751.32,           69290.75,    -21.49,      1.96,          35.14,  +3.04,  +2.53

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.