Orbital Analysis for matched events on 20211015_212102.758_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 46.98° Bg -0.77° Vg 42.80km/s
mass 0.10991g, abs. mag -0.9
best visual mag -1.0
Path Details
------------
start -0.06° 52.63° 95.15km
end   -0.31° 52.66° 84.26km

Orbit Details
-------------
Semimajor axis 11.38A.U., eccentricity 0.99, inclination 2.73°, Period 38.40Y, LA Sun 202.44°, last Perihelion 1983-06-23

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: 2459503.389615265187
Time: 2021-10-15 21:21:02.758912 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0035 and UK0041
 Convergence angle = 14.20784 deg
 R.A. =  44.98365  Dec = +16.77293 deg

Best intersection: Stations UK0035 and UK0041 with Qconv = 14.21 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3800323.21 +/- 64.37 m
 Y =  -1030633.15 +/- 90.63 m
 Z =   5121065.33 +/- 56.33 m
 Vx =    30215.60 +/- 231.73 m/s
 Vy =    29565.94 +/- 303.05 m/s
 Vz =    12979.12 +/- 195.04 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+4.403398e+03, -6.151714e+03, +3.800440e+03, +1.076775e+04, -1.824931e+04, +9.770934e+03
-6.151714e+03, +8.794967e+03, -5.410347e+03, -1.548989e+04, +2.650710e+04, -1.427346e+04
+3.800440e+03, -5.410347e+03, +3.409920e+03, +9.494911e+03, -1.647240e+04, +9.079863e+03
+1.076775e+04, -1.548989e+04, +9.494911e+03, +2.977134e+04, -5.295032e+04, +2.848145e+04
-1.824931e+04, +2.650710e+04, -1.647240e+04, -5.295032e+04, +9.716231e+04, -5.308163e+04
+9.770934e+03, -1.427346e+04, +9.079863e+03, +2.848145e+04, -5.308163e+04, +2.975240e+04

Timing offsets (from input data):
    UK0035: 0.000000 s
    UK003A: 0.000000 s
    UK0041: -0.000076 s

Reference point on the trajectory:
  Time: 2021-10-15 21:21:02.758912 UTC
  Lon     = +-0.057250 +/- 0.0010 deg
  Lat     = +52.626326 +/- 0.0003 deg
  Lat geo = +52.443255 +/- 0.0003 deg
  Ht      =   95154.26 +/- 96.39 m

  JD dynamic   = 2459503.390416006092 
  LST apparent = 344.8265646879 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  44.37738 +/- 0.4455 deg
  Dec       = +17.06757 +/- 0.2437 deg
  Azimuth   = 104.08912 +/- 0.2229 deg
  Elevation = +31.82399 +/- 0.4521 deg
  Vavg      =  43.31624 +/- 0.0700 km/s
  Vinit     =  44.22200 +/- 0.0504 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  44.57345 +/- 0.4455 deg
  Dec       = +16.97385 +/- 0.2437 deg
  Azimuth   = 103.98332 +/- 0.2229 deg
  Elevation = +31.63468 +/- 0.4521 deg
  Vavg      =  43.55317 +/- 0.0700 km/s
  Vinit     =  44.45892 +/- 0.0504 km/s
Radiant (geocentric, J2000):
  R.A.   =  44.74213 +/- 0.4495 deg
  Dec    = +16.16528 +/- 0.2489 deg
  Vg     =  42.80397 +/- 0.0520 km/s
  Vinf   =  44.22200 +/- 0.0504 km/s
  Zc     =  58.13162 +/- 0.4528 deg
  Zg     =  59.16939 +/- 0.4602 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  46.97940 +/- 0.3482 deg
  Bg     =  -0.77213 +/- 0.3579 deg
  Vh     =  41.25082 +/- 0.1367 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =   5.39864 +/- 0.3105 deg
  Bh     =  -0.79963 +/- 0.3815 deg
  Vh_x   = -41.06384 +/- 0.1660 km/s
  Vh_y   =  -3.88069 +/- 0.2060 km/s
  Vh_z   =   0.57569 +/- 0.2692 km/s
Orbit:
  La Sun = 202.443374 +/- 0.0000 deg
  a      =  11.381889 +/- 1.0332 AU
  e      =   0.992763 +/- 0.0006
  i      =   2.729020 +/- 1.4383 deg
  peri   = 147.311074 +/- 0.7161 deg
  node   =  22.424795 +/- 0.0030 deg
  Pi     = 169.735869 +/- 0.7189 deg
  q      =   0.082376 +/- 0.0029 AU
  f      = 212.707355 +/- 0.7189 deg
  M      = 359.206830 +/- 0.1914 deg
  Q      =  22.681402 +/- 2.0635 AU
  n      =   0.025667 +/- 0.0063 deg/day
  T      =  38.399198 +/- 4.7062 years
  Last perihelion JD = 2445508.740799 (1983-06-23 05:46:45.071059) +/- 1718.9170 days
  Tj     =   0.812043 +/- 0.0584
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +4.403018e-07, +1.968880e-06, -1.181176e+00, -1.924931e-06, -4.807781e-04, -9.306809e-04
q   , +1.968880e-06, +9.262137e-06, -5.362099e+00, -9.091165e-06, -2.251705e-03, -4.447984e-03
Tp  , -1.181176e+00, -5.362099e+00, +3.233952e+06, +5.487748e+00, +1.305255e+03, +2.539647e+03
node, -1.924931e-06, -9.091165e-06, +5.487748e+00, +1.022556e-05, +2.198431e-03, +4.415752e-03
peri, -4.807781e-04, -2.251705e-03, +1.305255e+03, +2.198431e-03, +5.477305e-01, +1.080372e+00
i   , -9.306809e-04, -4.447984e-03, +2.539647e+03, +4.415752e-03, +1.080372e+00, +2.195525e+00

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.022523
 a2 = 20.739584

Mean time residuals from time vs. length:
  Station with reference time: UK0035
  Avg. res. = 4.848e-06 s
  Stddev    = 2.20e-03 s

Begin point on the trajectory:
  Lon =    -0.057239 +/- 0.0010 deg
  Lat =    52.626324 +/- 0.0003 deg
  Ht  = 95154.73 +/- 95.92 m
End point on the trajectory:
  Lon =    -0.308247 +/- 0.0008 deg
  Lat =    52.664054 +/- 0.0001 deg
  Ht  = 84256.70 +/- 57.67 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
    UK0035,   False,     1.010397,    52.949859,   25.00,   0.078725,  18.122049,    95154.73,    84256.70,          0.006279,     13.51,      2.70,              91.63, 1.0000,    True,    True, {"ff_name": "FF_UK0035_20211015_212057_591_0339712.fits"}
    UK003A,    True,    -2.395630,    52.113500,   85.00,   0.008006,  22.524213,    94167.64,    84148.37,          0.288816,       nan,       nan,              27.86, 0.0000,    True,    True, {"ff_name": "FF_UK003A_20211015_212102_584_0318464.fits"}
    UK0041,   False,     1.214343,    52.647541,   45.00,   0.000000,   0.000000,    90919.07,    85296.78,          0.009634,     21.28,      6.22,              99.94, 1.0000,   False,   False, {"ff_name": "FF_UK0041_20211015_212102_641_0339968.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,     UK0035,       0,  0.000000, 2459503.389615265187, 305.33788,  25.50446,              243.87106,  49.18394,       243.86671,       49.18203,    305.33788,     +25.50446,     305.33913,      +25.50123,  3800323.82, -1030632.55,  5121065.60,      52.626324,       -0.057239,   95154.73,  125023.03,       0.00,                0.90,   295.79,      0.00,           41576.55,     -1.46,     -7.34,          12.34,  +3.63,  +3.15
  1,     UK0035,       0,  0.040536, 2459503.389615734573, 304.54539,  25.24088,              244.50109,  48.54330,       244.51008,       48.54723,    304.54539,     +25.24088,     304.54291,      +25.24761,  3799192.51, -1031739.53,  5120579.64,      52.629355,       -0.077267,   94281.77,  125056.00,    1655.72,             1654.82,   157.13,  40845.66,           41576.55,      3.05,     15.28,          25.70,  +2.15,  +1.66
  2,     UK0035,       0,  0.081064, 2459503.389616203494, 303.76159,  24.98781,              245.12290,  47.91390,       245.12977,       47.91689,    303.76159,     +24.98781,     303.75987,      +24.99297,  3798074.55, -1032833.45,  5120099.42,      52.632348,       -0.097069,   93419.38,  125110.40,    3291.91,             3291.01,     1.09,  40371.86,           41576.55,      2.35,     11.76,          19.77,  +1.43,  +0.94
  3,     UK0035,       0,  0.121640, 2459503.389616672881, 302.91676,  24.69901,              245.77007,  47.22072,       245.78659,       47.22787,    302.91676,     +24.69901,     302.91219,      +24.71149,  3796857.16, -1034024.67,  5119576.49,      52.635604,       -0.118626,   92480.63,  125193.59,    5073.62,             5072.72,   -11.56,  43910.38,           41576.55,      5.69,     28.51,          47.89,  +1.18,  +0.69
  4,     UK0035,       0,  0.162204, 2459503.389617142733, 302.07531,  24.42541,              246.41860,  46.53951,       246.42146,       46.54074,    302.07531,     +24.42541,     302.07510,      +24.42757,  3795647.69, -1035208.14,  5119056.96,      52.638836,       -0.140053,   91548.31,  125301.57,    6843.74,             6842.84,   -35.26,  43637.77,           42182.38,      0.99,      4.96,           8.33,  +0.97,  +0.48
  5,     UK0035,       0,  0.202796, 2459503.389617612585, 301.21052,  24.13155,              247.06550,  45.82733,       247.06194,       45.82581,    301.21052,     +24.13155,     301.21251,      +24.12883,  3794392.93, -1036435.91,  5118517.98,      52.642186,       -0.162286,   90581.44,  125439.90,    8680.14,             8679.24,     6.08,  45240.41,           42792.73,     -1.25,     -6.25,          10.47,  +0.96,  +0.47
  6,     UK0035,       0,  0.243384, 2459503.389618081972, 300.36328,  23.82580,              247.67599,  45.11357,       247.67955,       45.11508,    300.36328,     +23.82580,     300.36313,      +23.82854,  3793148.64, -1037653.46,  5117983.50,      52.645505,       -0.184345,   89622.98,  125603.75,   10501.22,            10500.32,    32.29,  44867.54,           43233.08,      1.26,      6.30,          10.55,  +0.64,  +0.14
  7,     UK0035,       0,  0.283944, 2459503.389618551359, 299.56063,  23.53903,              248.25026,  44.43802,       248.25097,       44.43832,    299.56063,     +23.53903,     299.56158,      +23.53958,  3791966.12, -1038810.55,  5117475.54,      52.648657,       -0.205326,   88712.43,  125784.32,   12231.90,            12231.01,   -30.68,  42669.67,           43369.52,      0.25,      1.27,           2.12,  +0.42,  -0.08
  8,     UK0035,       0,  0.324536, 2459503.389619021211, 298.71724,  23.22877,              248.83951,  43.71945,       248.84073,       43.71996,    298.71724,     +23.22877,     298.71818,      +23.22971,  3790711.87, -1040037.83,  5116936.78,      52.651996,       -0.227579,   87747.01,  126001.36,   14067.55,            14066.65,     9.91,  45221.93,           43556.77,      0.44,      2.19,           3.65,  +0.40,  -0.10
  9,     UK0035,       0,  0.365096, 2459503.389619491063, 297.91134,  22.93606,              249.39981,  43.03427,       249.39125,       43.03067,    297.91134,     +22.93606,     297.91584,      +22.92938,  3789509.15, -1041214.69,  5116420.15,      52.655196,       -0.248935,   86821.58,  126234.77,   15827.79,            15826.89,   -23.50,  43398.33,           43643.43,     -3.11,    -15.60,          25.99,  +0.29,  -0.22
 10,     UK0035,       0,  0.405640, 2459503.389619959984, 297.14436,  22.64792,              249.91992,  42.37327,       249.90716,       42.36792,    297.14436,     +22.64792,     297.15057,      +22.63791,  3788352.79, -1042346.20,  5115923.44,      52.658269,       -0.269482,   85932.13,  126482.39,   17520.19,            17519.29,  -124.03,  41742.30,           43604.34,     -4.69,    -23.47,          39.03,  +0.26,  -0.25
 11,     UK0035,       0,  0.446164, 2459503.389620428905, 296.42483,  22.35256,              250.38296,  41.73223,       250.38850,       41.73455,    296.42483,     +22.35256,     296.42470,      +22.35693,  3787247.21, -1043428.00,  5115448.53,      52.661205,       -0.289142,   85082.01,  126740.40,   19138.25,            19137.35,  -298.02,  39928.52,           43440.58,      2.05,     10.28,          17.06,  +0.44,  -0.07
 12,     UK0035,       0,  0.486668, 2459503.389620897826, 295.72558,  22.07733,              250.83912,  41.11756,       250.84512,       41.12006,    295.72558,     +22.07733,     295.72542,      +22.08208,  3786173.55, -1044478.58,  5114987.34,      52.664054,       -0.308247,   84256.70,  127010.63,   20709.61,            20708.71,  -517.84,  38795.05,           43188.73,      2.24,     11.24,          18.61,  +1.27,  +0.75
  0,     UK003A,       1,  0.050658, 2459503.389615851454,  69.61875,  34.38470,               69.13262,  28.10472,        69.07182,       28.33774,     69.61875,     +34.38470,      69.46885,      +34.58929,  3799044.59, -1031884.27,  5120516.10,      52.629751,       -0.079907,   94167.64,  193487.35,       0.00,             1871.32,   -73.99,      0.00,           44070.73,   -224.16,   -775.68,         860.74,  +2.96,  +1.53
  1,     UK003A,       1,  0.090702, 2459503.389616314787,  69.88023,  34.50458,               68.86249,  28.04099,        68.79793,       28.28577,     69.88023,     +34.50458,      69.72333,      +34.72000,  3797862.44, -1033041.01,  5120008.31,      52.632916,       -0.100835,   93255.79,  191958.33,    1730.13,             3601.45,  -114.69,  43205.77,           44070.73,   -233.68,   -808.90,         904.73,  +1.73,  +0.31
  2,     UK003A,       1,  0.130754, 2459503.389616778586,  70.13557,  34.61157,               68.60700,  27.97180,        68.53660,       28.23574,     70.13557,     +34.61157,      69.96703,      +34.84441,  3796751.07, -1034128.48,  5119530.92,      52.635888,       -0.120528,   92398.83,  190523.58,    3356.67,             5227.99,  -259.33,  40610.69,           44070.73,   -250.08,   -866.28,         976.15,  +1.45,  +0.05
  3,     UK003A,       1,  0.170798, 2459503.389617241919,  70.43947,  34.76267,               68.28472,  27.90692,        68.21307,       28.17263,     70.43947,     +34.76267,      70.27039,      +34.99762,  3795395.34, -1035455.07,  5118948.57,      52.639510,       -0.144526,   91353.82,  188779.86,    5340.86,             7212.18,   -45.96,  49550.17,           44070.73,   -249.63,   -864.61,         983.28,  +1.49,  +0.11
  4,     UK003A,       1,  0.210838, 2459503.389617705252,  70.70680,  34.89644,               68.00099,  27.85082,        67.92863,       28.11671,     70.70680,     +34.89644,      70.53813,      +35.13202,  3794223.17, -1036602.03,  5118445.06,      52.642639,       -0.165306,   90450.65,  187275.00,    7056.38,             8927.69,  -101.09,  42845.12,           44258.21,   -247.97,   -858.74,         984.47,  +1.06,  -0.30
  5,     UK003A,       1,  0.250902, 2459503.389618169051,  71.02493,  35.02420,               67.68852,  27.76187,        67.60828,       28.05275,     71.02493,     +35.02420,      70.84123,      +35.28270,  3792923.16, -1037874.09,  5117886.64,      52.646106,       -0.188344,   89449.34,  185611.48,    8959.01,            10830.33,    29.83,  47489.92,           44773.68,   -268.86,   -931.91,        1077.85,  +0.84,  -0.50
  6,     UK003A,       1,  0.290926, 2459503.389618632384,  71.31106,  35.18573,               67.37143,  27.71585,        67.29535,       27.98955,     71.31106,     +35.18573,      71.13870,      +35.42939,  3791674.04, -1039096.35,  5117350.08,      52.649435,       -0.210497,   88487.59,  184017.29,   10787.15,            12658.47,    88.03,  45676.09,           45054.36,   -251.14,   -869.66,        1014.64,  +0.84,  -0.48
  7,     UK003A,       1,  0.330974, 2459503.389619095717,  71.55999,  35.29123,               67.12337,  27.65090,        67.04270,       27.93835,     71.55999,     +35.29123,      71.37959,      +35.54770,  3790681.24, -1040067.80,  5116923.62,      52.652078,       -0.228146,   87723.42,  182751.55,   12240.16,            14111.48,  -229.96,  36281.73,           44440.25,   -261.99,   -907.64,        1066.24,  +0.78,  -0.53
  8,     UK003A,       1,  0.371030, 2459503.389619559515,  71.90533,  35.44834,               66.77140,  27.56903,        66.68741,       27.86472,     71.90533,     +35.44834,      71.72054,      +35.71290,  3789304.15, -1041415.28,  5116332.10,      52.655741,       -0.252572,   86663.88,  181004.41,   14255.60,            16126.92,    14.12,  50315.49,           44545.44,   -267.09,   -925.43,        1097.63,  +0.40,  -0.89
  9,     UK003A,       1,  0.411070, 2459503.389620022848,  72.20380,  35.58984,               66.46325,  27.50287,        66.37802,       27.80007,     72.20380,     +35.58984,      72.01874,      +35.85636,  3788125.57, -1042568.53,  5115825.83,      52.658873,       -0.273510,   85757.40,  179512.40,   15980.52,            17851.83,   -31.61,  43079.80,           44519.05,   -266.43,   -923.04,        1103.90,  +0.54,  -0.73
 10,     UK003A,       1,  0.451130, 2459503.389620486647,  72.49478,  35.70245,               66.18306,  27.42051,        66.09057,       27.73948,     72.49478,     +35.70245,      72.29696,      +35.98926,  3787047.06, -1043623.85,  5115362.56,      52.661736,       -0.292692,   84928.15,  178150.12,   17558.96,            19430.28,  -224.70,  39402.12,           44271.98,   -283.79,   -983.91,        1185.62,  +0.52,  -0.73
 11,     UK003A,       1,  0.491162, 2459503.389620949980,  72.75780,  35.83242,               65.90821,  27.36677,        65.81635,       27.68118,     72.75780,     +35.83242,      72.56344,      +36.11567,  3786032.60, -1044616.50,  5114926.80,      52.664428,       -0.310752,   84148.37,  176871.63,   19043.68,            20914.99,  -510.28,  37088.12,           43853.26,   -277.96,   -963.34,        1169.26,  +1.05,  -0.19
  0,     UK0041,       0,  0.193199, 2459503.389617502224, 286.25788,  33.44295,              270.08827,  43.82346,       270.09513,       43.82460,    286.25788,     +33.44295,     286.25562,      +33.44734,  3794831.16, -1036007.11,  5118706.22,      52.641017,       -0.154540,   90919.07,  130253.82,       0.00,             8037.87,  -210.90,      0.00,           46032.82,      3.24,     11.08,          18.29,  +1.19,  +0.62
  1,     UK0041,       0,  0.233659, 2459503.389617970679, 285.36217,  33.02023,              270.37615,  42.98902,       270.35913,       42.98618,    285.36217,     +33.02023,     285.37095,      +33.00926,  3793464.34, -1037344.54,  5118119.11,      52.644664,       -0.178750,   89866.13,  130705.23,    2000.40,            10038.28,     0.28,  49441.53,           46032.82,     -8.17,    -27.95,          45.96,  +0.13,  -0.45
  2,     UK0041,       0,  0.274095, 2459503.389618438669, 284.58349,  32.60983,              270.58893,  42.23260,       270.59005,       42.23278,    284.58349,     +32.60983,     284.58411,      +32.61056,  3792229.15, -1038553.18,  5117588.53,      52.647956,       -0.200656,   88914.95,  131139.12,    3808.17,            11846.04,    19.89,  44706.78,           46032.82,      0.54,      1.86,           3.05,  -0.36,  -0.95
  3,     UK0041,       0,  0.314515, 2459503.389618906192, 283.80765,  32.22144,              270.82567,  41.49184,       270.81235,       41.48963,    283.80765,     +32.22144,     283.81530,      +32.21274,  3791003.23, -1039752.73,  5117061.94,      52.651221,       -0.222407,   87971.25,  131593.20,    5602.36,            13640.23,    26.62,  44388.63,           46032.82,     -6.59,    -22.53,          36.79,  -0.72,  -1.32
  4,     UK0041,       0,  0.354947, 2459503.389619374182, 283.08200,  31.81204,              271.00748,  40.76561,       271.02318,       40.76823,    283.08200,     +31.81204,     283.07588,      +31.82237,  3789805.66, -1040924.56,  5116547.52,      52.654407,       -0.243669,   87049.70,  132059.25,    7355.06,            15392.93,    -8.66,  43349.36,           45287.63,      7.87,     26.94,          43.84,  -0.90,  -1.50
  5,     UK0041,       0,  0.395379, 2459503.389619842172, 282.31514,  31.40506,              271.22874,  40.01477,       271.23805,       40.01632,    282.31514,     +31.40506,     282.31221,      +31.41122,  3788548.55, -1042154.64,  5116007.53,      52.657749,       -0.265989,   86082.70,  132571.46,    9194.91,            17232.78,    43.20,  45504.74,           45105.68,      4.73,     16.20,          26.26,  -1.00,  -1.61
  6,     UK0041,       0,  0.435735, 2459503.389620309230, 281.70624,  31.06520,              271.39235,  39.40590,       271.40806,       39.40851,    281.70624,     +31.06520,     281.70021,      +31.07564,  3787526.55, -1043154.66,  5115568.53,      52.660463,       -0.284173,   85296.78,  133006.98,   10690.65,            18728.52,  -245.68,  37063.72,           44180.85,      8.08,     27.67,          44.70,  -0.59,  -1.21

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.