Orbital Analysis for matched events on 20211015_230613.415_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 78.87° Bg -17.52° Vg 60.54km/s
mass 0.02565g, abs. mag 0.5
best visual mag 1.1
Path Details
------------
start 1.55° 52.88° 112.08km
end   1.03° 52.97° 99.73km

Orbit Details
-------------
Semimajor axis 14.48A.U., eccentricity 0.97, inclination 134.94°, Period 55.13Y, LA Sun 202.52°, last Perihelion 1966-10-07

Full details below
Click here to download a zip of the raw and processed data.

Detailed report below graphs

Click on an image to see a larger view


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

Uncertainties type:
 Purely geometric uncertainties

Reference JD: 2459503.462655268144
Time: 2021-10-15 23:06:13.415168 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002K and UK0032
 Convergence angle = 44.12731 deg
 R.A. =  79.23819  Dec =  +6.03512 deg

Best intersection: Stations UK002K and UK0032 with Qconv = 44.13 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3827302.60 +/- 58.57 m
 Y =    869347.34 +/- 98.14 m
 Z =   5152034.60 +/- 39.43 m
 Vx =    11431.55 +/- 135.24 m/s
 Vy =    60121.62 +/- 253.63 m/s
 Vz =     6509.01 +/- 88.98 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+2.505767e+03, +3.764560e+03, +1.547568e+03, +5.476554e+03, +8.769814e+03, +3.105018e+03
+3.764560e+03, +7.242376e+03, +2.704768e+03, +7.932503e+03, +1.313495e+04, +5.398975e+03
+1.547568e+03, +2.704768e+03, +1.412718e+03, +3.324947e+03, +5.894715e+03, +2.796976e+03
+5.476554e+03, +7.932503e+03, +3.324947e+03, +1.368267e+04, +2.176914e+04, +7.971213e+03
+8.769814e+03, +1.313495e+04, +5.894715e+03, +2.176914e+04, +3.549905e+04, +1.403777e+04
+3.105018e+03, +5.398975e+03, +2.796976e+03, +7.971213e+03, +1.403777e+04, +7.037880e+03

Timing offsets (from input data):
    UK002K: 0.000242 s
    UK0032: 0.000000 s

Reference point on the trajectory:
  Time: 2021-10-15 23:06:13.415168 UTC
  Lon     = ++1.547025 +/- 0.0012 deg
  Lat     = +52.882177 +/- 0.0004 deg
  Lat geo = +52.700031 +/- 0.0004 deg
  Ht      =  112061.25 +/- 75.92 m

  JD dynamic   = 2459503.463456009049 
  LST apparent = 12.7972314349 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  79.23426 +/- 0.0879 deg
  Dec       =  +6.07107 +/- 0.0599 deg
  Azimuth   = 105.52207 +/- 0.0580 deg
  Elevation = +18.91813 +/- 0.0917 deg
  Vavg      =  61.02039 +/- 0.1841 km/s
  Vinit     =  61.54394 +/- 0.2362 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  79.34092 +/- 0.0879 deg
  Dec       =  +6.04534 +/- 0.0599 deg
  Azimuth   = 105.44705 +/- 0.0580 deg
  Elevation = +18.83523 +/- 0.0917 deg
  Vavg      =  61.28137 +/- 0.1841 km/s
  Vinit     =  61.80492 +/- 0.2362 km/s
Radiant (geocentric, J2000):
  R.A.   =  79.34214 +/- 0.0917 deg
  Dec    =  +5.50213 +/- 0.0641 deg
  Vg     =  60.53571 +/- 0.2401 km/s
  Vinf   =  61.54394 +/- 0.2362 km/s
  Zc     =  71.03322 +/- 0.0918 deg
  Zg     =  71.70867 +/- 0.0980 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  78.86906 +/- 0.0917 deg
  Bg     = -17.52472 +/- 0.0691 deg
  Vh     =  41.45306 +/- 0.2412 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  51.76482 +/- 0.0616 deg
  Bh     = -26.08519 +/- 0.1490 deg
  Vh_x   = -23.04174 +/- 0.1386 km/s
  Vh_y   = -29.24386 +/- 0.2262 km/s
  Vh_z   =  18.22720 +/- 0.0367 km/s
Orbit:
  La Sun = 202.515773 +/- 0.0000 deg
  a      =  14.484807 +/- 142.8844 AU
  e      =   0.974013 +/- 0.0086
  i      = 134.942388 +/- 0.2411 deg
  peri   = 105.160720 +/- 0.5408 deg
  node   =  22.516811 +/- 0.0000 deg
  Pi     = 127.677531 +/- 0.5408 deg
  q      =   0.376413 +/- 0.0018 AU
  f      = 254.840123 +/- 0.5408 deg
  M      = 359.312425 +/- nan deg
  Q      =  28.593202 +/- 285.7690 AU
  n      =   0.017879 +/- 0.0052 deg/day
  T      =  55.127680 +/- nan years
  Last perihelion JD = 2439406.185333 (1966-10-07 16:26:52.805481) +/- 198239.1830 days
  Tj     =  -0.174541 +/- 0.1231
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +5.814238e-05, +1.295992e-05, -1.134990e+03, +3.397634e-08, -3.736838e-03, +1.611833e-03
q   , +1.295992e-05, +2.916695e-06, -2.467291e+02, +7.377720e-09, -8.364916e-04, +3.500562e-04
Tp  , -1.134990e+03, -2.467291e+02, +4.126596e+10, -6.961800e-01, +7.181566e+04, -3.291358e+04
node, +3.397634e-08, +7.377720e-09, -6.961800e-01, +2.430373e-11, -2.159022e-06, +1.152140e-06
peri, -3.736838e-03, -8.364916e-04, +7.181566e+04, -2.159022e-06, +2.406296e-01, -1.024332e-01
i   , +1.611833e-03, +3.500562e-04, -3.291358e+04, +1.152140e-06, -1.024332e-01, +5.461920e-02

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.000000
 a2 = 0.000000

Mean time residuals from time vs. length:
  Station with reference time: UK0032
  Avg. res. = 5.514e-06 s
  Stddev    = 2.35e-03 s

Begin point on the trajectory:
  Lon =     1.547760 +/- 0.0007 deg
  Lat =    52.882054 +/- 0.0003 deg
  Ht  = 112079.14 +/- 66.24 m
End point on the trajectory:
  Lon =     1.032152 +/- 0.0003 deg
  Lat =    52.966964 +/- 0.0002 deg
  Ht  = 99727.55 +/- 34.58 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
    UK002K,   False,    -0.382860,    53.537770,   34.00,  48.751542,   0.000000,   110077.75,    99890.03,          0.008754,     24.53,      7.68,              22.58, 1.0000,    True,    True, {"ff_name": "FF_UK002K_20211015_230610_469_0488704.fits"}
    UK0032,   False,    -0.023645,    52.984073,    6.00,   0.000000,  59.956353,   112079.14,    99727.55,          0.017617,     41.20,     19.44,              28.72, 1.0000,    True,    True, {"ff_name": "FF_UK0032_20211015_230612_840_0491264.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,     UK002K,       1,  0.063507, 2459503.462656000629,  57.32983,  14.25915,              119.06805,  36.50175,       119.05215,       36.51210,     57.32983,     +14.25915,      57.33551,      +14.27474,  3826669.24,   866016.30,  5151673.96,      52.889792,       +1.501373,  110956.47,  183607.32,       0.00,             3409.84,  -268.01,      0.00,           62496.18,    -15.77,     50.29,          59.21,  +5.21,  +3.89
  1,     UK002K,       0,  0.103275, 2459503.462656460702,  56.99975,  14.37124,              119.32990,  36.76766,       119.31838,       36.77518,     56.99975,     +14.37124,      57.00408,      +14.38253,  3826164.82,   863363.42,  5151386.75,      52.895847,       +1.465037,  110077.75,  181103.72,    2715.64,             6125.48,     0.15,  68287.04,           62496.18,    -11.25,     35.91,          42.87,  +2.67,  +1.38
  2,     UK002K,       0,  0.143087, 2459503.462656921241,  56.73765,  14.46830,              119.53326,  36.98536,       119.53305,       36.98550,     56.73765,     +14.46830,      56.73832,      +14.46851,  3825771.32,   861293.89,  5151162.70,      52.900564,       +1.436641,  109392.93,  179153.43,    4834.13,             8243.97,  -331.55,  53212.28,           62496.18,     -0.21,      0.66,           0.80,  +2.79,  +1.52
  3,     UK002K,       0,  0.182839, 2459503.462657381780,  56.38737,  14.59002,              119.81155,  37.26919,       119.81958,       37.26394,     56.38737,     +14.59002,      56.38544,      +14.58217,  3825261.08,   858610.40,  5150872.17,      52.906671,       +1.399852,  108505.86,  176632.95,    7581.11,            10990.95,   -31.06,  69102.96,           62496.18,      7.60,    -24.33,          29.77,  +1.97,  +0.73
  4,     UK002K,       0,  0.222619, 2459503.462657841854,  56.05285,  14.68611,              120.09210,  37.52279,       120.08999,       37.52417,     56.05285,     +14.68611,      56.05448,      +14.68817,  3824796.18,   856165.38,  5150607.46,      52.912227,       +1.366300,  107698.52,  174342.03,   10083.97,            13493.81,    23.58,  62917.52,           62931.07,     -1.97,      6.31,           7.82,  +1.86,  +0.65
  5,     UK002K,       0,  0.262399, 2459503.462658302393,  55.72184,  14.78759,              120.36668,  37.77875,       120.36096,       37.78251,     55.72184,     +14.78759,      55.72483,      +14.79317,  3824345.48,   853795.01,  5150350.84,      52.917606,       +1.333751,  106916.62,  172126.72,   12510.41,            15920.25,     1.81,  60996.67,           62779.00,     -5.28,     16.86,          21.17,  +1.75,  +0.57
  6,     UK002K,       0,  0.302163, 2459503.462658762466,  55.37452,  14.89229,              120.65733,  38.04539,       120.64674,       38.05238,     55.37452,     +14.89229,      55.37928,      +14.90264,  3823885.53,   851376.00,  5150088.95,      52.923088,       +1.300522,  106119.51,  169872.35,   14986.65,            18396.49,    30.81,  62273.23,           62670.52,     -9.65,     30.79,          39.17,  +1.65,  +0.50
  7,     UK002K,       0,  0.341923, 2459503.462659223005,  55.01610,  14.99942,              120.95939,  38.31929,       120.94351,       38.32980,     55.01610,     +14.99942,      55.02275,      +15.01492,  3823423.86,   848947.96,  5149826.08,      52.928582,       +1.267152,  105320.25,  167616.18,   17472.13,            20881.97,    69.30,  62512.18,           62612.12,    -14.27,     45.51,          58.69,  +1.54,  +0.42
  8,     UK002K,       0,  0.381667, 2459503.462659682613,  54.67464,  15.13651,              121.22498,  38.60957,       121.23717,       38.60150,     54.67464,     +15.13651,      54.67225,      +15.12464,  3822982.39,   846626.16,  5149574.71,      52.933828,       +1.235220,  104556.74,  165464.84,   19848.86,            23258.70,     0.03,  59801.06,           62397.63,     10.74,    -34.40,          44.92,  +1.84,  +0.75
  9,     UK002K,       0,  0.421427, 2459503.462660143152,  54.30630,  15.23654,              121.54527,  38.88153,       121.54396,       38.88241,     54.30630,     +15.23654,      54.30849,      +15.23782,  3822536.46,   844280.90,  5149320.80,      52.939120,       +1.202951,  103786.30,  163298.46,   22249.60,            25659.45,   -46.21,  60380.81,           62178.44,     -1.14,      3.65,           4.83,  +1.54,  +0.48
 10,     UK002K,       0,  0.461139, 2459503.462660602760,  53.89793,  15.37964,              121.88061,  39.20986,       121.89506,       39.20024,     53.89793,     +15.37964,      53.89518,      +15.36558,  3822043.91,   841690.44,  5149040.35,      52.944957,       +1.167308,  102936.23,  160914.45,   24901.35,            28311.19,   161.50,  66774.35,           62267.44,     12.36,    -39.58,          53.15,  +1.66,  +0.63
 11,     UK002K,       0,  0.500883, 2459503.462661062833,  53.51629,  15.48789,              122.21307,  39.49439,       122.21929,       39.49024,     53.51629,     +15.48789,      53.51639,      +15.48184,  3821605.83,   839386.46,  5148790.91,      52.950140,       +1.135573,  102180.95,  158800.68,   27259.83,            30669.68,    73.98,  59341.95,           62206.36,      5.25,    -16.79,          22.85,  +1.83,  +0.83
 12,     UK002K,       0,  0.540635, 2459503.462661522906,  53.14075,  15.59252,              122.54331,  39.77220,       122.54036,       39.77417,     53.14075,     +15.59252,      53.14395,      +15.59539,  3821186.76,   837182.49,  5148552.30,      52.955092,       +1.105194,  101459.15,  156785.16,   29515.95,            32925.79,  -116.40,  56754.69,           61989.78,     -2.46,      7.84,          10.81,  +1.63,  +0.65
 13,     UK002K,       0,  0.580347, 2459503.462661982514,  52.71674,  15.72324,              122.90986,  40.09590,       122.90914,       40.09638,     52.71674,     +15.72324,      52.71939,      +15.72394,  3820721.98,   834738.08,  5148287.66,      52.960576,       +1.071503,  100659.43,  154558.68,   32018.18,            35428.02,   -58.20,  63009.57,           61882.73,     -0.59,      1.88,           2.63,  +1.67,  +0.72
 14,     UK002K,       0,  0.620063, 2459503.462662442122,  52.29441,  15.84695,              123.28169,  40.41203,       123.27804,       40.41450,     52.29441,     +15.84695,      52.29815,      +15.85050,  3820274.35,   832383.88,  5148032.78,      52.965850,       +1.039034,   99890.03,  152422.49,   34428.08,            37837.92,   -92.58,  60678.15,           61783.06,     -2.96,      9.44,          13.39,  +2.40,  +1.48
 15,     UK002K,       1,  0.659791, 2459503.462662901729,  51.87333,  15.94925,              123.66907,  40.70843,       123.64366,       40.72570,     51.87333,     +15.94925,      51.88402,      +15.97397,  3819846.84,   830135.46,  5147789.36,      52.970881,       +1.008002,   99155.92,  150389.99,   36729.69,            40139.53,  -235.99,  57934.18,           61631.53,    -20.34,     64.78,          93.12,  +6.18,  +5.29
  0,     UK0032,       0,  0.000000, 2459503.462655268144,  66.23334,  32.12753,               95.56672,  45.80861,        95.50569,       45.79533,     66.23334,     +32.12753,      66.27994,      +32.14825,  3827312.85,   869401.25,  5152040.43,      52.882054,       +1.547760,  112079.14,  155083.79,       0.00,               55.19,   285.84,      0.00,           59763.90,     51.44,    109.12,         160.45,  +4.40,  +3.45
  1,     UK0032,       0,  0.039660, 2459503.462655727286,  66.04272,  32.52639,               95.32291,  46.20404,        95.32230,       46.20391,     66.04272,     +32.52639,      66.04335,      +32.52660,  3826874.28,   867094.66,  5151790.71,      52.887329,       +1.516169,  111313.96,  153010.13,    2361.15,             2305.96,    95.78,  59534.92,           59763.90,      0.51,      1.07,           1.60,  +3.21,  +2.29
  2,     UK0032,       0,  0.079332, 2459503.462656186428,  65.78726,  32.85069,               95.20677,  46.58480,        95.15424,       46.57335,     65.78726,     +32.85069,      65.82743,      +32.86844,  3826487.80,   865062.05,  5151570.65,      52.891971,       +1.488298,  110640.28,  151189.11,    4441.85,             4386.66,  -265.09,  52447.56,           59763.90,     42.64,     90.40,         136.36,  +2.59,  +1.69
  3,     UK0032,       0,  0.118904, 2459503.462656644173,  65.50559,  33.32263,               94.95392,  47.08330,        94.92091,       47.07608,     65.50559,     +33.32263,      65.53102,      +33.33374,  3825974.89,   862364.56,  5151278.61,      52.898124,       +1.451348,  109747.15,  148785.88,    7203.16,             7147.97,    60.80,  69779.27,           59763.90,     26.18,     55.43,          84.99,  +2.52,  +1.66
  4,     UK0032,       0,  0.158512, 2459503.462657102849,  65.24403,  33.75534,               94.71782,  47.54062,        94.70296,       47.53736,     65.24403,     +33.75534,      65.25588,      +33.76032,  3825518.34,   859963.40,  5151018.65,      52.903593,       +1.418420,  108953.00,  146656.74,    9661.12,             9605.93,    81.13,  62057.27,           60978.30,     11.54,     24.41,          37.98,  +2.30,  +1.47
  5,     UK0032,       0,  0.198132, 2459503.462657561526,  64.98103,  34.16974,               94.49578,  47.98451,        94.48869,       47.98295,     64.98103,     +34.16974,      64.98717,      +34.17211,  3825089.32,   857707.11,  5150774.38,      52.908725,       +1.387455,  108207.50,  144665.41,   11970.79,            11915.60,   -47.57,  58295.57,           60942.40,      5.39,     11.41,          17.99,  +1.61,  +0.81
  6,     UK0032,       0,  0.237728, 2459503.462658019736,  64.69747,  34.60468,               94.26193,  48.45318,        94.25859,       48.45245,     64.69747,     +34.60468,      64.70096,      +34.60580,  3824649.20,   855392.35,  5150523.77,      52.913982,       +1.355677,  107443.43,  142632.99,   14340.31,            14285.12,  -114.95,  59842.33,           60811.79,      2.49,      5.26,           8.41,  +1.59,  +0.82
  7,     UK0032,       0,  0.277304, 2459503.462658477481,  64.38353,  35.05079,               94.03374,  48.94586,        94.01403,       48.94153,     64.38353,     +35.05079,      64.39931,      +35.05734,  3824203.14,   853046.40,  5150269.79,      52.919303,       +1.323458,  106669.84,  140584.41,   16741.76,            16686.57,  -149.16,  60679.44,           60746.35,     14.30,     30.28,          49.13,  +1.42,  +0.68
  8,     UK0032,       0,  0.316860, 2459503.462658935692,  64.07912,  35.53767,               93.74281,  49.45835,        93.74924,       49.45977,     64.07912,     +35.53767,      64.07570,      +35.53554,  3823743.62,   850629.69,  5150008.15,      52.924777,       +1.290255,  105873.74,  138486.46,   19215.64,            19160.45,  -109.71,  62541.28,           60835.26,     -4.56,     -9.63,          15.87,  +1.16,  +0.45
  9,     UK0032,       0,  0.356384, 2459503.462659392972,  63.72263,  36.03984,               93.46788,  50.00993,        93.46216,       50.00867,     63.72263,     +36.03984,      63.72832,      +36.04173,  3823270.93,   848143.69,  5149739.00,      52.930400,       +1.256088,  105055.69,  136342.12,   21760.46,            21705.27,     2.64,  64386.58,           61073.78,      3.95,      8.36,          13.99,  +1.32,  +0.65
 10,     UK0032,       0,  0.395924, 2459503.462659850717,  63.37933,  36.53659,               93.17679,  50.54726,        93.17409,       50.54666,     63.37933,     +36.53659,      63.38296,      +36.53748,  3822821.14,   845778.14,  5149482.90,      52.935743,       +1.223553,  104278.07,  134314.65,   24181.97,            24126.78,    -9.29,  61242.13,           61211.60,      1.82,      3.85,           6.53,  +1.30,  +0.66
 11,     UK0032,       0,  0.435424, 2459503.462660307996,  62.99810,  37.06212,               92.87128,  51.12357,        92.85877,       51.12081,     62.99810,     +37.06212,      63.00900,      +37.06621,  3822354.85,   843325.79,  5149217.40,      52.941273,       +1.189813,  103472.77,  132227.45,   26692.34,            26637.15,    70.09,  63553.58,           61380.96,      8.20,     17.36,          29.96,  +1.18,  +0.57
 12,     UK0032,       0,  0.474972, 2459503.462660765275,  62.67848,  37.57242,               92.51948,  51.64971,        92.55642,       51.65790,     62.67848,     +37.57242,      62.65378,      +37.56037,  3821931.20,   841097.68,  5148976.17,      52.946291,       +1.159129,  102741.82,  130343.72,   28973.16,            28917.97,   -83.02,  57672.35,           61361.29,    -23.70,    -50.05,          87.64,  +1.10,  +0.52
 13,     UK0032,       0,  0.514432, 2459503.462661222089,  62.23991,  38.12534,               92.19998,  52.27172,        92.20096,       52.27193,     62.23991,     +38.12534,      62.24135,      +38.12502,  3821460.28,   838620.97,  5148708.04,      52.951861,       +1.125023,  101930.18,  128266.16,   31508.46,            31453.27,    23.75,  64249.69,           61431.16,     -0.61,     -1.29,           2.30,  +1.15,  +0.61
 14,     UK0032,       0,  0.553896, 2459503.462661678903,  61.82192,  38.70052,               91.81837,  52.89166,        91.82991,       52.89422,     61.82192,     +38.70052,      61.81602,      +38.69679,  3820997.26,   836185.84,  5148444.40,      52.957329,       +1.091471,  101133.00,  126240.05,   34001.20,            33946.01,    87.72,  63164.97,           61519.79,     -6.98,    -14.77,          26.70,  +1.26,  +0.75
 15,     UK0032,       0,  0.593392, 2459503.462662136182,  61.41856,  39.24397,               91.44766,  53.47846,        91.46840,       53.48308,     61.41856,     +39.24397,      61.40637,      +39.23729,  3820571.80,   833948.24,  5148202.15,      52.962347,       +1.060612,  100401.21,  124393.04,   36291.74,            36236.55,   -52.48,  57994.23,           61501.54,    -12.23,    -25.86,          47.44,  +1.54,  +1.07
 16,     UK0032,       0,  0.632904, 2459503.462662593462,  61.00206,  39.74525,               91.12651,  54.04285,        91.11634,       54.04058,     61.00206,     +39.74525,      61.01184,      +39.74851,  3820179.78,   831886.49,  5147978.93,      52.966964,       +1.032152,   99727.55,  122704.23,   38402.26,            38347.07,  -373.69,  53414.69,           61330.72,      5.84,     12.36,          22.98,  +2.32,  +1.88

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.