Orbital Analysis for matched events on 20210813_005557.961_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 61.69° Bg 38.31° Vg 58.31km/s
mass 0.01623g, abs. mag -0.6
Path Details
------------
start 1.78° 53.51° 109.27km
end   1.64° 53.45° 94.10km

Orbit Details
-------------
Semimajor axis 6.88A.U., eccentricity 0.86, inclination 113.13°, Period 18.04Y, LA Sun 140.23°, last Perihelion 2021-07-24

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: 2459439.538865289651
Time: 2021-08-13 00:55:57.961026 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000Z and UK002K
 Convergence angle = 31.62000 deg
 R.A. =  46.20063  Dec = +57.00016 deg
Intersection 2 - Stations: UK000Z and UK0032
 Convergence angle = 14.03447 deg
 R.A. =  46.62894  Dec = +56.43163 deg
Intersection 3 - Stations: UK002K and UK0032
 Convergence angle = 45.65389 deg
 R.A. =  46.14118  Dec = +56.79409 deg

Best intersection: Stations UK002K and UK0032 with Qconv = 45.65 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3571320.68 +/- 168.64 m
 Y =  -1482046.74 +/- 182.67 m
 Z =   5192318.15 +/- 228.99 m
 Vx =    22020.08 +/- 655.26 m/s
 Vy =    22779.69 +/- 691.95 m/s
 Vz =    50192.24 +/- 1109.35 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.324045e+04, +1.662421e+04, +2.248968e+04, +3.289865e+04, +4.801204e+04, +3.394955e+04
+1.662421e+04, +2.116385e+04, +2.906346e+04, +3.885788e+04, +5.793422e+04, +4.040613e+04
+2.248968e+04, +2.906346e+04, +4.882871e+04, +2.509753e+04, +4.564186e+04, +2.995035e+04
+3.289865e+04, +3.885788e+04, +2.509753e+04, +2.072069e+05, +2.510152e+05, +1.893383e+05
+4.801204e+04, +5.793422e+04, +4.564186e+04, +2.510152e+05, +3.185099e+05, +2.356031e+05
+3.394955e+04, +4.040613e+04, +2.995035e+04, +1.893383e+05, +2.356031e+05, +1.761657e+05

Timing offsets (from input data):
    UK000Z: 0.001953 s
    UK0026: 0.000000 s
    UK002K: 0.001256 s
    UK0032: 0.000000 s

Reference point on the trajectory:
  Time: 2021-08-13 00:55:57.961026 UTC
  Lon     = ++1.782378 +/- 0.0035 deg
  Lat     = +53.506677 +/- 0.0007 deg
  Lat geo = +53.325609 +/- 0.0007 deg
  Ht      =  109467.19 +/- 231.01 m

  JD dynamic   = 2459439.539666030556 
  LST apparent = 337.4622525855 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  45.97140 +/- 0.1229 deg
  Dec       = +57.73871 +/- 0.4860 deg
  Azimuth   =  55.16020 +/- 0.7162 deg
  Elevation = +52.76105 +/- 0.2204 deg
  Vavg      =  56.96589 +/- 1.0419 km/s
  Vinit     =  59.35536 +/- 0.9857 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  46.15667 +/- 0.1229 deg
  Dec       = +57.52493 +/- 0.4860 deg
  Azimuth   =  55.41550 +/- 0.7162 deg
  Elevation = +52.58336 +/- 0.2204 deg
  Vavg      =  57.10643 +/- 1.0419 km/s
  Vinit     =  59.49590 +/- 0.9857 km/s
Radiant (geocentric, J2000):
  R.A.   =  46.14636 +/- 0.1218 deg
  Dec    = +57.51627 +/- 0.4852 deg
  Vg     =  58.30884 +/- 1.0022 km/s
  Vinf   =  59.35536 +/- 0.9857 km/s
  Zc     =  37.34264 +/- 0.2186 deg
  Zg     =  37.68705 +/- 0.2103 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  61.69345 +/- 0.2286 deg
  Bg     = +38.30916 +/- 0.4548 deg
  Vh     =  40.27582 +/- 0.6747 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  79.86555 +/- 1.3687 deg
  Bh     = +63.82747 +/- 1.0594 deg
  Vh_x   =  -3.12585 +/- 0.6809 km/s
  Vh_y   = -17.48751 +/- 0.8685 km/s
  Vh_z   = -36.14634 +/- 0.2295 km/s
Orbit:
  La Sun = 140.225818 +/- 0.0000 deg
  a      =   6.879277 +/- 468.1887 AU
  e      =   0.860289 +/- 0.0611
  i      = 113.130067 +/- 1.2586 deg
  peri   = 152.716727 +/- 1.1350 deg
  node   = 140.225386 +/- 0.0001 deg
  Pi     = 292.942112 +/- 1.1349 deg
  q      =   0.961111 +/- 0.0027 AU
  f      =  27.279466 +/- 1.1350 deg
  M      =   1.082309 +/- nan deg
  Q      =  12.797442 +/- 936.3775 AU
  n      =   0.054625 +/- 0.0134 deg/day
  T      =  18.043252 +/- 498886940.1516 years
  Last perihelion JD = 2459419.726158 (2021-07-24 05:25:40.046297) +/- 0.6675 days
  Tj     =   0.296023 +/- 0.3625
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +2.011589e-03, +6.946351e-05, +3.275201e-02, -5.567232e-08, +5.871948e-04, +7.542023e-04
q   , +6.946351e-05, +2.995254e-06, +1.230903e-03, -1.898961e-09, +2.300376e-05, +2.569664e-05
Tp  , +3.275201e-02, +1.230903e-03, +5.504527e-01, -9.019831e-07, +1.002356e-02, +1.221734e-02
node, -5.567232e-08, -1.898961e-09, -9.019831e-07, +1.542515e-12, -1.613649e-08, -2.089463e-08
peri, +5.871948e-04, +2.300376e-05, +1.002356e-02, -1.613649e-08, +1.839574e-04, +2.185110e-04
i   , +7.542023e-04, +2.569664e-05, +1.221734e-02, -2.089463e-08, +2.185110e-04, +2.830541e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.000000
 a2 = 68.720535

Mean time residuals from time vs. length:
  Station with reference time: UK0032
  Avg. res. = 6.447e-06 s
  Stddev    = 2.54e-03 s

Begin point on the trajectory:
  Lon =     1.780513 +/- 0.0038 deg
  Lat =    53.505903 +/- 0.0006 deg
  Ht  = 109265.41 +/- 243.77 m
End point on the trajectory:
  Lon =     1.638674 +/- 0.0018 deg
  Lat =    53.447468 +/- 0.0002 deg
  Ht  = 94099.67 +/- 65.13 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
    UK000Z,   False,    -1.740490,    53.069201,  230.00,   0.000000,   0.000000,   101382.71,    94099.67,          0.012792,      3.90,     56.22,              31.67, 0.2757,    True,    True, {"ff_name": "FF_UK000Z_20210813_005558_109_0414720.fits"}
    UK0026,    True,    -0.023645,    52.984073,    6.00,   0.000000,   0.000000,   108265.97,    95146.06,          0.092661,       nan,       nan,              13.53, 0.0000,    True,    True, {"ff_name": "FF_UK0026_20210813_005552_140_0425984.fits"}
    UK002K,   False,    -0.382860,    53.537770,   34.00,   0.000000,   0.000000,   109158.83,    94504.21,          0.015220,     22.74,     38.77,              28.38, 0.2259,    True,    True, {"ff_name": "FF_UK002K_20210813_005555_997_0420096.fits"}
    UK0032,   False,    -0.023645,    52.984073,    6.00,   0.000000,   0.000000,   109265.41,    94720.76,          0.027064,     19.01,     77.36,              13.53, 0.0547,    True,    True, {"ff_name": "FF_UK0032_20210813_005552_236_0425984.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,     UK000Z,       0,  0.178709, 2459439.538867336698,  59.75042,  24.93171,               77.51003,  22.13319,        77.49561,       22.12631,     59.75042,     +24.93171,      59.76729,      +24.93511,  3567552.14, -1485945.29,  5183728.18,      53.475594,       +1.706840,  101382.71,  256954.03,       0.00,            10158.15,  -198.20,      0.00,           62929.46,     67.19,      4.65,          54.06,  +1.16,  -0.89
  1,     UK000Z,       0,  0.218965, 2459439.538867802825,  59.84768,  24.61914,               77.65521,  21.83759,        77.65567,       21.83781,     59.84768,     +24.61914,      59.84807,      +24.61903,  3566597.77, -1486932.58,  5181552.82,      53.467703,       +1.687717,   99336.26,  254821.54,    2572.50,            12730.65,   -15.11,  63903.44,           62929.46,     -2.12,     -0.15,           1.72,  +1.45,  -0.58
  2,     UK000Z,       0,  0.259201, 2459439.538868268486,  59.90904,  24.31563,               77.82000,  21.56964,        77.80716,       21.56352,     59.90904,     +24.31563,      59.92447,      +24.31864,  3565705.23, -1487855.90,  5179518.38,      53.460316,       +1.669818,   97422.69,  252834.05,    4978.34,            15136.50,     2.51,  59793.32,           62929.46,     59.06,      4.09,          48.30,  +1.22,  -0.79
  3,     UK000Z,       0,  0.299481, 2459439.538868734613,  60.01917,  23.98252,               77.96777,  21.25007,        77.97706,       21.25449,     60.01917,     +23.98252,      60.01005,      +23.98034,  3564717.00, -1488878.23,  5177265.81,      53.452128,       +1.650012,   95304.32,  250643.23,    7642.15,            17800.30,   275.48,  66132.22,           62929.46,    -42.43,     -2.94,          35.00,  +1.35,  -0.65
  4,     UK000Z,       0,  0.339637, 2459439.538869199343,  60.07668,  23.78972,               78.05747,  21.06857,        78.07449,       21.07667,     60.07668,     +23.78972,      60.05910,      +23.78572,  3564154.96, -1489459.66,  5175984.70,      53.447468,       +1.638674,   94099.67,  249396.98,    9157.13,            19315.29,  -593.01,  37727.48,           58117.43,    -77.42,     -5.38,          64.19,  +5.84,  +3.86
  0,     UK0026,       1,  0.025026, 2459439.538865579292,  57.90351,  44.81587,               63.66493,  38.34505,        63.58892,       38.31840,     57.90351,     +44.81587,      57.98677,      +44.84392,  3570760.90, -1482625.83,  5191042.19,      53.502068,       +1.771168,  108265.97,  172330.51,       0.00,             1508.89,   274.47,      0.00,           58198.71,    190.87,    -46.38,         235.10,  +3.74,  +2.56
  1,     UK0026,       1,  0.065114, 2459439.538866043091,  57.98732,  44.62232,               63.80290,  38.17396,        63.69136,       38.13470,     57.98732,     +44.62232,      58.10974,      +44.66332,  3569889.26, -1483527.54,  5189055.40,      53.494885,       +1.753704,  106395.79,  170052.87,    2349.50,             3858.40,   244.54,  58608.62,           58198.71,    277.25,    -66.82,         345.92,  +2.32,  +1.17
  2,     UK0026,       1,  0.105222, 2459439.538866507355,  58.10017,  44.42952,               63.92193,  37.98723,        63.79747,       37.94339,     58.10017,     +44.42952,      58.23691,      +44.47517,  3569006.19, -1484441.07,  5187042.54,      53.487602,       +1.736009,  104501.39,  167747.62,    4729.83,             6238.72,   244.24,  59347.90,           58198.71,    305.94,    -73.55,         386.91,  +1.87,  +0.75
  3,     UK0026,       1,  0.145338, 2459439.538866971619,  58.23018,  44.24869,               64.01817,  37.79861,        63.90015,       37.75710,     58.23018,     +44.24869,      58.35994,      +44.29196,  3568168.94, -1485307.20,  5185134.12,      53.480690,       +1.719220,  102705.55,  165563.67,    6986.65,             8495.54,   119.96,  56257.38,           58198.71,    286.82,    -69.09,         367.55,  +1.20,  +0.11
  4,     UK0026,       1,  0.185466, 2459439.538867436349,  58.38293,  44.07032,               64.09742,  37.59888,        64.00468,       37.56639,     58.38293,     +44.07032,      58.48504,      +44.10435,  3567334.45, -1486170.48,  5183232.00,      53.473795,       +1.702481,  100915.91,  163389.00,    9236.03,            10744.92,   -12.48,  56055.09,           57613.87,    222.67,    -53.99,         289.25,  +1.29,  +0.22
  5,     UK0026,       1,  0.225582, 2459439.538867900614,  58.49730,  43.85101,               64.23720,  37.39255,        64.12160,       37.35196,     58.49730,     +43.85101,      58.62460,      +43.89331,  3566423.31, -1487113.05,  5181155.16,      53.466260,       +1.684216,   98962.20,  161017.86,   11692.01,            13200.91,    62.41,  61222.09,           57962.38,    274.37,    -66.20,         361.56,  +0.97,  -0.06
  6,     UK0026,       1,  0.265706, 2459439.538868364878,  58.63079,  43.63187,               64.36395,  37.17540,        64.24070,       37.13212,     58.63079,     +43.63187,      58.76659,      +43.67690,  3565516.67, -1488050.98,  5179088.56,      53.458754,       +1.666036,   97018.45,  158661.10,   14135.89,            15644.78,   124.71,  60908.14,           58402.55,    288.99,    -69.64,         386.45,  +1.19,  +0.19
  7,     UK0026,       1,  0.305862, 2459439.538868829608,  58.81540,  43.43204,               64.44034,  36.94274,        64.35808,       36.91403,     58.81540,     +43.43204,      58.90640,      +43.46216,  3564643.16, -1488954.61,  5177097.52,      53.451516,       +1.648510,   95146.06,  156392.88,   16490.43,            17999.32,    95.77,  58634.68,           58605.30,    190.32,    -46.32,         258.34,  +1.13,  +0.16
  0,     UK002K,       0,  0.011643, 2459439.538865411188,  41.27536,  28.18386,               90.56163,  36.37665,        90.56528,       36.37985,     41.27536,     +28.18386,      41.27050,      +28.18424,  3571176.99, -1482195.39,  5191990.61,      53.505494,       +1.779483,  109158.83,  181214.35,       0.00,              387.33,   -52.77,      0.00,           61723.53,    -11.86,     -6.94,          15.64,  +2.62,  +1.33
  1,     UK002K,       0,  0.051931, 2459439.538865877315,  41.24208,  27.81070,               90.90000,  36.12044,        90.90812,       36.12754,     41.24208,     +27.81070,      41.23140,      +27.81155,  3570298.42, -1483104.27,  5189988.03,      53.498258,       +1.761883,  107273.64,  179152.88,    2368.18,             2755.51,   -75.90,  58781.26,           61723.53,    -26.10,    -15.26,          34.81,  +2.29,  +1.02
  2,     UK002K,       0,  0.092235, 2459439.538866343908,  41.19454,  27.41297,               91.26823,  35.85362,        91.27192,       35.85683,     41.19454,     +27.41297,      41.18999,      +27.41335,  3569381.68, -1484052.63,  5187898.42,      53.490700,       +1.743521,  105306.85,  177010.55,    4839.27,             5226.60,     2.94,  61311.36,           61723.53,    -11.71,     -6.85,          15.80,  +1.54,  +0.30
  3,     UK002K,       0,  0.132571, 2459439.538866810501,  41.15835,  26.97762,               91.65581,  35.55113,        91.66609,       35.56002,     41.15835,     +26.97762,      41.14525,      +26.97868,  3568405.86, -1485062.11,  5185674.16,      53.482647,       +1.723982,  103213.70,  174740.47,    7469.59,             7856.92,   239.10,  65210.14,           61723.53,    -32.14,    -18.79,          43.94,  +1.41,  +0.20
  4,     UK002K,       0,  0.172879, 2459439.538867277093,  41.10210,  26.57029,               92.03434,  35.28044,        92.03392,       35.28008,     41.10210,     +26.57029,      41.10338,      +26.57025,  3567511.21, -1485987.63,  5183634.90,      53.475256,       +1.706049,  101294.96,  172667.56,    9881.14,            10268.47,   258.15,  59828.11,           61679.55,      1.30,      0.76,           1.81,  +1.41,  +0.22
  5,     UK002K,       0,  0.213179, 2459439.538867743686,  41.05249,  26.17846,               92.39269,  35.01652,        92.38516,       35.01004,     41.05249,     +26.17846,      41.06330,      +26.17768,  3566670.87, -1486856.95,  5181719.45,      53.468308,       +1.689190,   99493.00,  170728.18,   12146.28,            12533.61,   131.27,  56206.91,           60885.40,     22.97,     13.46,          32.17,  +1.30,  +0.14
  6,     UK002K,       0,  0.253467, 2459439.538868209813,  40.98498,  25.78755,               92.76299,  34.76308,        92.73457,       34.73868,     40.98498,     +25.78755,      41.02340,      +25.78460,  3565848.06, -1487708.15,  5179843.94,      53.461498,       +1.672677,   97728.88,  168837.07,   14364.17,            14751.50,   -42.14,  55051.02,           59977.03,     85.83,     50.39,         121.59,  +1.17,  +0.03
  7,     UK002K,       0,  0.293831, 2459439.538868676871,  40.95737,  25.31999,               93.15944,  34.42732,        93.14558,       34.41548,     40.95737,     +25.31999,      40.97673,      +25.31856,  3564896.28, -1488692.76,  5177674.47,      53.453614,       +1.653596,   95688.60,  166661.20,   16929.71,            17317.04,   127.58,  63560.06,           59897.45,     41.30,     24.21,          59.25,  +1.24,  +0.13
  8,     UK002K,       0,  0.334043, 2459439.538869142532,  40.92769,  25.04453,               93.40270,  34.23694,        93.38782,       34.22425,     40.92769,     +25.04453,      40.94851,      +25.04300,  3564343.72, -1489264.39,  5176414.96,      53.449033,       +1.642446,   94504.21,  165399.31,   18419.15,            18806.48,  -769.78,  37039.76,           58340.48,     44.00,     25.81,          63.62,  +2.90,  +1.81
  0,     UK0032,       0,  0.000000, 2459439.538865289651,  57.84478,  44.91208,               63.60596,  38.43913,        63.53525,       38.41436,     57.84478,     +44.91208,      57.92215,      +44.93819,  3571226.65, -1482144.01,  5192103.83,      53.505903,       +1.780513,  109265.41,  173549.11,       0.00,              253.45,   504.44,      0.00,           54116.61,    178.60,    -43.45,         218.46,  +4.21,  +3.01
  1,     UK0032,       0,  0.040152, 2459439.538865754381,  58.01109,  44.77738,               63.63902,  38.26200,        63.62343,       38.25658,     58.01109,     +44.77738,      58.02827,      +44.78316,  3570464.53, -1482932.42,  5190366.66,      53.499626,       +1.765224,  107630.05,  171555.55,    2054.31,             2307.75,   175.51,  51163.26,           54116.61,     38.93,     -9.60,          48.20,  +2.46,  +1.29
  2,     UK0032,       0,  0.080328, 2459439.538866219576,  58.14031,  44.59895,               63.73523,  38.07611,        63.72571,       38.07281,     58.14031,     +44.59895,      58.15102,      +44.60248,  3569600.34, -1483826.43,  5188396.83,      53.492503,       +1.747906,  105775.94,  169297.97,    4383.75,             4637.19,   120.29,  57980.86,           54116.61,     23.48,     -5.80,          29.47,  +2.45,  +1.31
  3,     UK0032,       0,  0.120488, 2459439.538866684306,  58.25085,  44.43285,               63.82957,  37.90797,        63.81893,       37.90428,     58.25085,     +44.43285,      58.26294,      +44.43679,  3568826.87, -1484626.58,  5186633.80,      53.486122,       +1.732385,  104116.73,  167278.36,    6468.63,             6722.08,  -178.53,  51914.54,           54116.61,     25.98,     -6.42,          32.99,  +1.59,  +0.47
  4,     UK0032,       0,  0.160692, 2459439.538867149502,  58.44020,  44.24572,               63.89628,  37.68306,        63.93369,       37.69595,     58.44020,     +44.24572,      58.40019,      +44.23183,  3567898.33, -1485587.15,  5184517.29,      53.478455,       +1.713782,  102125.16,  164857.75,    8971.54,             9224.99,   -61.95,  62255.13,           55654.57,    -90.11,     22.51,         116.21,  +1.40,  +0.31
  5,     UK0032,       0,  0.200880, 2459439.538867614698,  58.54720,  44.03822,               64.02999,  37.48884,        64.04432,       37.49379,     58.54720,     +44.03822,      58.53245,      +44.03292,  3567022.50, -1486493.20,  5182520.93,      53.471216,       +1.696221,  100246.96,  162576.53,   11332.35,            11585.80,   -86.51,  58744.18,           56535.31,    -34.14,      8.49,          44.64,  +1.41,  +0.35
  6,     UK0032,       0,  0.241096, 2459439.538868079893,  58.69960,  43.81815,               64.14715,  37.26122,        64.16712,       37.26811,     58.69960,     +43.81815,      58.67889,      +43.81077,  3566074.24, -1487474.16,  5180359.49,      53.463371,       +1.677217,   98213.79,  160110.14,   13888.38,            14141.83,    82.49,  63557.64,           57602.98,    -46.97,     11.69,          62.35,  +1.17,  +0.15
  7,     UK0032,       0,  0.281316, 2459439.538868545555,  58.86643,  43.59905,               64.25316,  37.02583,        64.29102,       37.03886,     58.86643,     +43.59905,      58.82648,      +43.58505,  3565140.37, -1488440.26,  5178230.83,      53.455637,       +1.658494,   96211.81,  157683.97,   16405.66,            16659.10,   212.49,  62587.60,           58463.49,    -87.88,     21.96,         118.49,  +1.28,  +0.29
  8,     UK0032,       0,  0.321480, 2459439.538869010285,  58.93767,  43.41312,               64.38428,  36.86379,        64.38477,       36.86396,     58.93767,     +43.41312,      58.93847,      +43.41294,  3564444.74, -1489159.88,  5176645.24,      53.449871,       +1.644502,   94720.76,  155876.69,   18280.72,            18534.16,  -296.40,  46685.10,           58080.07,     -1.13,      0.28,           1.54,  +1.83,  +0.87

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.