Orbital Analysis for matched events on 20210904_034542.516_UK

Summary for Event
-----------------
shower ID -1 spo
Lg 13.38° Bg 29.84° Vg 45.28km/s
mass 0.01904g, abs. mag -1.0
Path Details
------------
start -0.04° 51.95° 89.82km
end   0.06° 51.97° 79.45km

Orbit Details
-------------
Semimajor axis 27.48A.U., eccentricity 0.99, inclination 68.60°, Period 144.07Y, LA Sun 161.55°, last Perihelion 1877-09-15

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: 2459461.656742086168
Time: 2021-09-04 03:45:42.556840 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002B and UK002F
 Convergence angle = 39.51465 deg
 R.A. =   0.94751  Dec = +33.62246 deg

Best intersection: Stations UK002B and UK002F with Qconv = 39.51 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3066884.40 +/- 35.01 m
 Y =   2561229.67 +/- 56.47 m
 Z =   5071089.71 +/- 63.60 m
 Vx =    39130.39 +/- 9990.10 m/s
 Vy =     -152.71 +/- 218.07 m/s
 Vz =    25339.53 +/- 6623.77 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.318160e+03, -1.368766e+03, -1.817358e+03, -7.219648e+04, -7.836510e+03, -5.989367e+04
-1.368766e+03, +3.635045e+03, +3.498979e+03, +5.925338e+04, +1.682803e+04, +5.770357e+04
-1.817358e+03, +3.498979e+03, +4.498471e+03, +1.125634e+05, +1.813880e+04, +9.973566e+04
-7.219648e+04, +5.925338e+04, +1.125634e+05, +9.912165e+07, +1.368772e+06, +6.592309e+07
-7.836510e+03, +1.682803e+04, +1.813880e+04, +1.368772e+06, +9.527182e+04, +1.008232e+06
-5.989367e+04, +5.770357e+04, +9.973566e+04, +6.592309e+07, +1.008232e+06, +4.401249e+07

Timing offsets (from input data):
    UK000F: 0.000000 s
    UK000S: 0.000000 s
    UK002B: 0.000033 s
    UK002C: 0.000000 s
    UK002F: 0.000000 s

Reference point on the trajectory:
  Time: 2021-09-04 03:45:42.556840 UTC
  Lon     = +-0.050030 +/- 0.0009 deg
  Lat     = +51.948361 +/- 0.0003 deg
  Lat geo = +51.764060 +/- 0.0003 deg
  Ht      =   91166.33 +/- 59.06 m

  JD dynamic   = 2459461.657543296926 
  LST apparent = 39.8660771429 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 359.77639 +/- 0.3798 deg
  Dec       = +32.92554 +/- 0.3973 deg
  Azimuth   = 252.48005 +/- 0.2643 deg
  Elevation = +55.46970 +/- 0.4865 deg
  Vavg      =  42.19111 +/- 0.0316 km/s
  Vinit     =  46.61870 +/- 11.6836 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =   0.10435 +/- 0.3798 deg
  Dec       = +33.05088 +/- 0.3973 deg
  Azimuth   = 252.28785 +/- 0.2643 deg
  Elevation = +55.75184 +/- 0.4865 deg
  Vavg      =  42.03425 +/- 0.0316 km/s
  Vinit     =  46.46184 +/- 11.6836 km/s
Radiant (geocentric, J2000):
  R.A.   = 359.06545 +/- 0.3837 deg
  Dec    = +32.43497 +/- 0.4058 deg
  Vg     =  45.27501 +/- 0.0905 km/s
  Vinf   =  46.61870 +/- 0.0879 km/s
  Zc     =  34.47521 +/- 0.4861 deg
  Zg     =  34.99509 +/- 0.4958 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  13.37803 +/- 0.5269 deg
  Bg     = +29.83907 +/- 0.2454 deg
  Vh     =  41.55652 +/- 0.1222 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 326.90500 +/- 0.4190 deg
  Bh     = +32.82894 +/- 0.4355 deg
  Vh_x   = -29.25451 +/- 0.1075 km/s
  Vh_y   =  19.06714 +/- 0.3507 km/s
  Vh_z   = -22.52915 +/- 0.2062 km/s
Orbit:
  La Sun = 161.549313 +/- 0.0000 deg
  a      =  27.481814 +/- 3.8671 AU
  e      =   0.987711 +/- 0.0040
  i      =  68.598202 +/- 0.8215 deg
  peri   = 289.787088 +/- 0.4041 deg
  node   = 161.552000 +/- 0.0000 deg
  Pi     =  91.339087 +/- 0.4041 deg
  q      =   0.337719 +/- 0.0039 AU
  f      = 250.210854 +/- 0.4041 deg
  M      = 359.739108 +/- 0.1573 deg
  Q      =  54.625908 +/- 7.7358 AU
  n      =   0.006841 +/- 0.0040 deg/day
  T      = 144.068396 +/- 25.6902 years
  Last perihelion JD = 2406877.894301 (1877-09-15 09:27:47.648086) +/- 9383.6381 days
  Tj     =   0.451482 +/- 0.0502
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +1.802385e-05, -9.473242e-06, -4.130369e+01, +2.426682e-09, +6.938360e-06, -6.413770e-05
q   , -9.473242e-06, +1.600861e-05, +1.641528e+01, -1.502728e-09, -2.720298e-05, +3.988208e-05
Tp  , -4.130369e+01, +1.641528e+01, +1.018324e+08, -5.446452e-03, -4.626540e+00, +1.437581e+02
node, +2.426682e-09, -1.502728e-09, -5.446452e-03, +3.322477e-13, +1.419566e-09, -8.785149e-09
peri, +6.938360e-06, -2.720298e-05, -4.626540e+00, +1.419566e-09, +5.298129e-05, -3.787053e-05
i   , -6.413770e-05, +3.988208e-05, +1.437581e+02, -8.785149e-09, -3.787053e-05, +2.322997e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.000246
 a2 = 45.912249

Mean time residuals from time vs. length:
  Station with reference time: UK002F
  Avg. res. = 1.515e-05 s
  Stddev    = 3.89e-03 s

Begin point on the trajectory:
  Lon =    -0.037386 +/- 0.0007 deg
  Lat =    51.950826 +/- 0.0003 deg
  Ht  = 89822.93 +/- 52.94 m
End point on the trajectory:
  Lon =     0.059268 +/- 0.0005 deg
  Lat =    51.969852 +/- 0.0002 deg
  Ht  = 79454.54 +/- 31.95 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,    True,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,    87006.51,    81111.27,          0.606995,       nan,       nan,              75.81, 0.0000,    True,    True, {"ff_name": "FF_UK000F_20210904_034537_836_0723456.fits"}
    UK000S,    True,    -1.778230,    50.857470,   24.00,   0.000000,  66.835240,    85356.79,    79640.71,          0.059280,       nan,       nan,              91.42, 0.0000,    True,    True, {"ff_name": "FF_UK000S_20210904_034540_357_0751872.fits"}
    UK002B,   False,    -1.367130,    50.815550,   22.00,   0.000000,   0.000000,    85191.44,    79841.55,          0.010344,     15.00,     29.13,              87.19, 1.0000,    True,    True, {"ff_name": "FF_UK002B_20210904_034543_165_0758784.fits"}
    UK002C,    True,    -1.801980,    51.351940,  130.00,   0.000000,   0.000000,    88186.40,    79408.67,          0.033663,       nan,       nan,              88.80, 0.0000,    True,    True, {"ff_name": "FF_UK002C_20210904_034541_849_0752896.fits"}
    UK002F,   False,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,    89822.93,    79454.54,          0.011841,     22.82,     12.06,              75.81, 1.0000,    True,    True, {"ff_name": "FF_UK002F_20210904_034533_765_0729344.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,       1,  0.107229, 2459461.656743327156, 101.91153,  36.42057,               83.48978,  43.65118,        84.28903,       43.57838,    101.91153,     +36.42057,     101.51495,      +35.93330,  3062645.46,  2561246.21,  5068344.72,      51.955995,       -0.011132,   87006.51,  125176.78,       0.00,             5050.14,   312.49,      0.00,           44402.24,   -606.42,  -1120.59,        2099.56,  +0.37,  -0.12
  1,     UK000F,       1,  0.147661, 2459461.656743795145, 102.68876,  36.03437,               83.33345,  42.92366,        84.15957,       42.84855,    102.68876,     +36.03437,     102.27130,      +35.52741,  3061269.78,  2561251.58,  5067453.87,      51.958472,       +0.001426,   85656.74,  124882.50,    1638.94,             6689.08,    66.55,  40535.82,           44402.24,   -633.25,  -1168.92,        2195.82,  -1.01,  -1.49
  2,     UK000F,       1,  0.188185, 2459461.656744264066, 103.58466,  35.55613,               83.17826,  42.06130,        84.01067,       41.98572,    103.58466,     +35.55613,     103.15527,      +35.04151,  3059652.93,  2561257.89,  5066406.86,      51.961383,       +0.016224,   84070.52,  124564.59,    3565.20,             8615.34,   103.63,  47533.72,           44402.24,   -645.37,  -1190.69,        2242.68,  -1.30,  -1.78
  3,     UK000F,       1,  0.228693, 2459461.656744732987, 104.39073,  35.08318,               83.07254,  41.25507,        83.87552,       41.18218,    104.39073,     +35.08318,     103.96894,      +34.58345,  3058154.08,  2561263.74,  5065436.25,      51.964080,       +0.029938,   82600.20,  124295.00,    5350.89,            10401.03,     0.89,  44082.40,           44402.24,   -628.62,  -1160.45,        2190.18,  -1.42,  -1.89
  4,     UK000F,       1,  0.269201, 2459461.656745201908, 105.21239,  34.61010,               82.94634,  40.43690,        83.74144,       40.36479,    105.21239,     +34.61010,     104.78725,      +34.11210,  3056636.10,  2561269.66,  5064453.26,      51.966812,       +0.043838,   81111.27,  124047.51,    7159.36,            12209.49,   -79.08,  44644.66,           44523.11,   -628.84,  -1160.77,        2195.18,  -1.12,  -1.59
  0,     UK000S,       1,  0.153329, 2459461.656743860804, 148.02759,  47.36903,               44.71956,  25.16113,        44.64646,       25.14379,    148.02759,     +47.36903,     148.11882,      +47.39931,  3060964.04,  2561252.77,  5067255.88,      51.959022,       +0.004232,   85356.79,  195152.60,       0.00,             7053.33,   166.54,      0.00,           45557.53,    196.24,    125.56,         246.24,  +0.16,  -1.29
  1,     UK000S,       1,  0.193621, 2459461.656744326930, 148.33057,  46.94179,               44.85579,  24.70318,        44.77685,       24.68445,    148.33057,     +46.94179,     148.42895,      +46.97435,  3059597.51,  2561258.11,  5066370.97,      51.961482,       +0.016715,   84016.15,  195287.70,    1628.03,             8681.36,   -83.79,  40405.90,           45557.53,    212.81,    136.17,         266.85,  -0.30,  -1.75
  2,     UK000S,       1,  0.233997, 2459461.656744794454, 148.72435,  46.39946,               45.01724,  24.11537,        44.94262,       24.09767,    148.72435,     +46.39946,     148.81725,      +46.43005,  3057850.27,  2561264.93,  5065239.51,      51.964627,       +0.032731,   82302.20,  195482.02,    3709.65,            10762.98,   115.55,  51555.78,           45557.53,    202.25,    129.39,         253.34,  -0.40,  -1.86
  3,     UK000S,       1,  0.274325, 2459461.656745261047, 149.07649,  45.96197,               45.12240,  23.62385,        45.07790,       23.61329,    149.07649,     +45.96197,     149.13231,      +45.98012,  3056405.04,  2561270.57,  5064303.63,      51.967228,       +0.045959,   80884.64,  195657.91,    5431.45,            12484.77,   -42.69,  42694.86,           45557.53,    121.19,     77.45,         151.62,  -0.51,  -1.97
  4,     UK000S,       1,  0.314605, 2459461.656745727640, 149.36958,  45.57445,               45.22258,  23.19546,        45.19527,       23.18898,    149.36958,     +45.57445,     149.40437,      +45.58554,  3055136.72,  2561275.52,  5063482.31,      51.969510,       +0.057552,   79640.71,  195823.56,    6942.48,            13995.81,  -409.46,  37513.19,           43864.72,     74.66,     47.69,          93.31,  +0.62,  -0.84
  0,     UK002B,       0,  0.151870, 2459461.656743844040, 155.23459,  53.84138,               36.38211,  27.28394,        36.37254,       27.28101,    155.23459,     +53.84138,     155.24951,      +53.84452,  3060795.50,  2561253.43,  5067146.74,      51.959326,       +0.005798,   85191.44,  181427.38,       0.00,             7254.12,   435.35,      0.00,           43535.08,     25.32,     13.05,          32.39,  +1.57,  +0.28
  1,     UK002B,       0,  0.192254, 2459461.656744311564, 155.48907,  53.42296,               36.54855,  26.86455,        36.53256,       26.85965,    155.48907,     +53.42296,     155.51363,      +53.42816,  3059607.85,  2561258.07,  5066377.66,      51.961464,       +0.016625,   84026.29,  181443.04,    1414.92,             8669.04,   -32.38,  35036.59,           43535.08,     42.47,     21.88,          54.32,  +0.59,  -0.70
  2,     UK002B,       0,  0.232762, 2459461.656744780485, 155.85868,  52.87333,               36.74227,  26.29780,        36.74466,       26.29853,    155.85868,     +52.87333,     155.85613,      +52.87256,  3058027.56,  2561264.23,  5065354.32,      51.964308,       +0.031094,   82476.10,  181482.93,    3297.63,            10551.75,   -38.10,  46477.51,           43535.08,     -6.37,     -3.28,           8.15,  +0.30,  -0.99
  3,     UK002B,       0,  0.273286, 2459461.656745249406, 156.21674,  52.30052,               36.95053,  25.71436,        36.96197,       25.71787,    156.21674,     +52.30052,     156.20111,      +52.29687,  3056392.33,  2561270.62,  5064295.40,      51.967251,       +0.046081,   80872.19,  181544.84,    5245.78,            12499.91,    20.88,  48074.13,           43535.08,    -30.67,    -15.79,          39.19,  +0.53,  -0.76
  4,     UK002B,       0,  0.313618, 2459461.656745716464, 156.43316,  51.93094,               37.08864,  25.34191,        37.09927,       25.34516,    156.43316,     +51.93094,     156.41897,      +51.92756,  3055341.53,  2561274.72,  5063614.94,      51.969142,       +0.055657,   79841.55,  181593.25,    6497.68,            13751.80,  -607.45,  31039.78,           41597.07,    -28.57,    -14.70,          36.49,  +4.41,  +3.11
  0,     UK002C,       1,  0.080148, 2459461.656743013766, 128.23146,  41.82153,               60.73269,  31.32045,        60.77238,       31.32392,    128.23146,     +41.82153,     128.19735,      +41.79911,  3063847.91,  2561241.52,  5069123.38,      51.953830,       -0.022139,   88186.40,  166376.00,       0.00,             3617.57,   142.40,      0.00,           45398.32,    -69.38,    -70.58,         122.70,  +3.30,  +2.19
  1,     UK002C,       1,  0.120776, 2459461.656743484084, 128.85346,  41.25380,               60.84277,  30.59232,        60.85721,       30.59359,    128.85346,     +41.25380,     128.84137,      +41.24565,  3062052.58,  2561248.53,  5067960.79,      51.957063,       -0.005705,   86424.79,  166437.66,    2138.90,             5756.48,   387.28,  52646.03,           45398.32,    -25.44,    -25.89,          44.98,  +1.27,  +0.16
  2,     UK002C,       1,  0.161236, 2459461.656743952539, 129.35704,  40.85797,               60.87074,  30.04434,        60.91919,       30.04858,    129.35704,     +40.85797,     129.31527,      +40.83066,  3060710.75,  2561253.76,  5067091.86,      51.959478,       +0.006543,   85108.28,  166499.33,    3737.52,             7355.09,    99.70,  39510.95,           45398.32,    -85.88,    -87.33,         151.74,  -0.04,  -1.15
  3,     UK002C,       1,  0.201780, 2459461.656744421460, 129.90774,  40.37577,               60.93535,  29.40864,        60.99087,       29.41351,    129.90774,     +40.37577,     129.85973,      +40.34451,  3059146.57,  2561259.87,  5066078.95,      51.962294,       +0.020857,   83573.78,  166591.88,    5601.03,             9218.60,    73.11,  45962.77,           45398.32,    -99.12,   -100.77,         175.01,  -0.28,  -1.39
  4,     UK002C,       1,  0.242280, 2459461.656744890381, 130.38213,  39.91771,               61.01953,  28.82906,        61.05555,       28.83222,    130.38213,     +39.91771,     130.35135,      +39.89745,  3057712.88,  2561265.46,  5065150.54,      51.964874,       +0.033970,   82167.42,  166694.08,    7309.08,            10926.66,  -106.90,  42174.14,           44614.31,    -64.68,    -65.78,         114.15,  -0.36,  -1.47
  5,     UK002C,       1,  0.282852, 2459461.656745359767, 130.93361,  39.40202,               61.09589,  28.16448,        61.12891,       28.16737,    130.93361,     +39.40202,     130.90553,      +39.38347,  3056071.47,  2561271.87,  5064087.62,      51.967828,       +0.049016,   80557.48,  166833.65,    9264.60,            12882.18,   -42.79,  48198.74,           44902.80,    -59.72,    -60.74,         105.31,  -0.31,  -1.42
  6,     UK002C,       1,  0.323260, 2459461.656745827757, 131.31890,  39.03201,               61.15220,  27.69168,        61.18004,       27.69412,    131.31890,     +39.03201,     131.29551,      +39.01638,  3054900.13,  2561276.44,  5063329.10,      51.969936,       +0.059711,   79408.67,  166944.47,   10660.10,            14277.67,  -531.06,  34535.18,           43898.54,    -50.59,    -51.46,          89.16,  +1.70,  +0.59
  0,     UK002F,       1,  0.000000, 2459461.656742086168,  99.17675,  37.14784,               84.68448,  45.79724,        84.70214,       45.79559,     99.17675,     +37.14784,      99.16851,      +37.13729,  3066866.86,  2561229.74,  5071078.35,      51.948393,       -0.049698,   91149.11,  126204.04,       0.00,               20.90,   282.12,      0.00,           46151.97,    -12.79,    -24.19,          44.72,  +5.37,  +4.86
  1,     UK002F,       0,  0.040588, 2459461.656742556021,  99.91215,  36.74621,               84.58919,  45.08854,        84.56709,       45.09060,     99.91215,     +36.74621,      99.92284,      +36.75950,  3065515.59,  2561235.01,  5070203.31,      51.950826,       -0.037386,   89822.93,  125853.14,    1609.86,             1630.76,    -0.18,  39663.48,           46151.97,     16.15,     30.57,          56.66,  +3.11,  +2.61
  2,     UK002F,       0,  0.081260, 2459461.656743026804, 100.77173,  36.34553,               84.39440,  44.30225,        84.41971,       44.29989,    100.77173,     +36.34553,     100.75976,      +36.33018,  3064009.81,  2561240.89,  5069228.22,      51.953538,       -0.023640,   88345.26,  125486.03,    3403.79,             3424.69,  -102.33,  44107.26,           46151.97,    -18.71,    -35.37,          65.77,  +2.20,  +1.71
  3,     UK002F,       0,  0.122108, 2459461.656743499450, 101.81114,  35.78198,               84.23092,  43.29745,        84.23872,       43.29672,    101.81114,     +35.78198,     101.80776,      +35.77720,  3062113.88,  2561248.29,  5068000.48,      51.956952,       -0.006277,   86484.93,  125060.78,    5662.55,             5683.45,   252.15,  55296.57,           46151.97,     -5.84,    -11.05,          20.62,  +0.48,  -0.01
  4,     UK002F,       0,  0.162764, 2459461.656743970234, 102.60663,  35.34413,               84.10272,  42.52180,        84.10270,       42.52180,    102.60663,     +35.34413,     102.60732,      +35.34415,  3060656.52,  2561253.97,  5067056.74,      51.959576,       +0.007039,   85055.08,  124758.59,    7398.80,             7419.70,    93.07,  42705.98,           46312.33,      0.01,      0.03,           0.05,  -0.56,  -1.04
  5,     UK002F,       0,  0.203452, 2459461.656744441018, 103.43096,  34.88634,               83.96520,  41.71320,        83.96441,       41.71327,    103.43096,     +34.88634,     103.43222,      +34.88683,  3059143.71,  2561259.88,  5066077.10,      51.962299,       +0.020876,   83570.98,  124469.89,    9201.10,             9222.00,    -1.45,  44295.70,           46070.16,      0.60,      1.14,           2.14,  -0.91,  -1.39
  6,     UK002F,       0,  0.244192, 2459461.656744912267, 104.31189,  34.40054,               83.80527,  40.84902,        83.82027,       40.84762,    104.31189,     +34.40054,     104.30497,      +34.39116,  3057532.19,  2561266.17,  5065033.53,      51.965200,       +0.035636,   81990.20,  124190.75,   11121.02,            11141.92,    19.23,  47126.16,           46096.91,    -11.59,    -21.91,          41.17,  -1.07,  -1.54
  7,     UK002F,       0,  0.284912, 2459461.656745383982, 105.13047,  33.88687,               83.70835,  40.00203,        83.68343,       40.00436,    105.13047,     +33.88687,     105.14508,      +33.90254,  3055969.03,  2561272.27,  5064021.28,      51.968013,       +0.049957,   80457.01,  123947.33,   12983.32,            13004.22,   -16.79,  45734.26,           46077.82,     19.43,     36.78,          69.23,  -0.77,  -1.24
  8,     UK002F,       0,  0.325388, 2459461.656745852437, 105.68686,  33.57783,               83.59857,  39.45205,        83.59527,       39.45236,    105.68686,     +33.57783,     105.69001,      +33.57991,  3054946.92,  2561276.26,  5063359.40,      51.969852,       +0.059268,   79454.54,  123799.88,   14201.03,            14221.93,  -686.01,  30084.79,           45009.35,      2.59,      4.89,           9.22,  +1.07,  +0.61

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.