Orbital Analysis for matched events on 20210813_004704.168_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 63.44° Bg 38.36° Vg 58.90km/s
mass 0.02324g, abs. mag 0.1
Path Details
------------
start -1.08° 51.60° 111.29km
end   -1.27° 51.51° 92.23km

Orbit Details
-------------
Semimajor axis 13.17A.U., eccentricity 0.93, inclination 113.06°, Period 47.79Y, LA Sun 140.22°, last Perihelion 2021-07-22

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: 2459439.532687138766
Time: 2021-08-13 00:47:04.178365 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002B and UK002H
 Convergence angle = 51.14689 deg
 R.A. =  48.15972  Dec = +57.98944 deg

Best intersection: Stations UK002B and UK002H with Qconv = 51.15 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3578219.90 +/- 47.62 m
 Y =  -1872900.43 +/- 46.08 m
 Z =   5063210.55 +/- 42.42 m
 Vx =    20970.47 +/- 196.23 m/s
 Vy =    23528.87 +/- 203.32 m/s
 Vz =    50985.08 +/- 273.62 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.987877e+03, +1.461601e+03, +2.438037e+02, +5.812912e+02, +9.287634e+02, -3.703001e+03
+1.461601e+03, +1.685598e+03, +1.931123e+02, +1.470933e+02, +1.695525e+03, -4.671397e+03
+2.438037e+02, +1.931123e+02, +1.354072e+03, -1.019148e+03, -5.984004e+02, +2.473799e+03
+5.812912e+02, +1.470933e+02, -1.019148e+03, +5.251728e+03, +5.436035e+02, -5.490526e+03
+9.287634e+02, +1.695525e+03, -5.984004e+02, +5.436035e+02, +3.543244e+03, -7.348802e+03
-3.703001e+03, -4.671397e+03, +2.473799e+03, -5.490526e+03, -7.348802e+03, +2.538013e+04

Timing offsets (from input data):
    UK0001: 0.000000 s
    UK002B: -0.000476 s
    UK002H: 0.000000 s

Reference point on the trajectory:
  Time: 2021-08-13 00:47:04.178365 UTC
  Lon     = +-1.078007 +/- 0.0009 deg
  Lat     = +51.606150 +/- 0.0003 deg
  Lat geo = +51.421908 +/- 0.0003 deg
  Ht      =  111600.15 +/- 35.45 m

  JD dynamic   = 2459439.533487990499 
  LST apparent = 332.3716840659 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  48.29048 +/- 0.1065 deg
  Dec       = +58.27664 +/- 0.1862 deg
  Azimuth   =  49.99658 +/- 0.2626 deg
  Elevation = +48.25509 +/- 0.0856 deg
  Vavg      =  58.77958 +/- 0.1976 km/s
  Vinit     =  59.94036 +/- 0.2025 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  48.41957 +/- 0.1065 deg
  Dec       = +58.04490 +/- 0.1862 deg
  Azimuth   =  50.26685 +/- 0.2626 deg
  Elevation = +48.09428 +/- 0.0856 deg
  Vavg      =  58.93032 +/- 0.1976 km/s
  Vinit     =  60.09110 +/- 0.2025 km/s
Radiant (geocentric, J2000):
  R.A.   =  48.52374 +/- 0.1068 deg
  Dec    = +58.03418 +/- 0.1886 deg
  Vg     =  58.90469 +/- 0.2060 km/s
  Vinf   =  59.94036 +/- 0.2025 km/s
  Zc     =  41.86354 +/- 0.0851 deg
  Zg     =  42.24551 +/- 0.0881 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  63.43798 +/- 0.1132 deg
  Bg     = +38.35990 +/- 0.1758 deg
  Vh     =  41.03330 +/- 0.2695 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  83.58697 +/- 0.2363 deg
  Bh     = +62.98677 +/- 0.0999 deg
  Vh_x   =  -2.08168 +/- 0.0718 km/s
  Vh_y   = -18.52055 +/- 0.0842 km/s
  Vh_z   = -36.55663 +/- 0.2674 km/s
Orbit:
  La Sun = 140.219886 +/- 0.0000 deg
  a      =  13.169578 +/- 34.5514 AU
  e      =   0.928048 +/- 0.0239
  i      = 113.063220 +/- 0.1240 deg
  peri   = 149.922269 +/- 0.3865 deg
  node   = 140.219335 +/- 0.0000 deg
  Pi     = 290.141604 +/- 0.3865 deg
  q      =   0.947572 +/- 0.0010 AU
  f      =  30.073910 +/- 0.3865 deg
  M      =   0.437377 +/- nan deg
  Q      =  25.391585 +/- 69.1027 AU
  n      =   0.020623 +/- 0.0058 deg/day
  T      =  47.792357 +/- 249443783.8868 years
  Last perihelion JD = 2459418.324984 (2021-07-22 19:47:58.579786) +/- 0.2730 days
  Tj     =  -0.069043 +/- 0.1322
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +1.897514e-04, +6.721617e-06, +3.083657e-03, +1.647231e-09, +5.450077e-05, -2.286732e-05
q   , +6.721617e-06, +8.612060e-07, +2.012178e-04, +3.691473e-11, +4.486064e-06, -5.141410e-07
Tp  , +3.083657e-03, +2.012178e-04, +6.370628e-02, +2.368282e-08, +1.263156e-03, -3.290176e-04
node, +1.647231e-09, +3.691473e-11, +2.368282e-08, +1.901442e-14, +3.864202e-10, -2.636284e-10
peri, +5.450077e-05, +4.486064e-06, +1.263156e-03, +3.864202e-10, +2.613748e-05, -5.371252e-06
i   , -2.286732e-05, -5.141410e-07, -3.290176e-04, -2.636284e-10, -5.371252e-06, +3.655145e-06

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: UK002H
  Avg. res. = 5.378e-06 s
  Stddev    = 2.32e-03 s

Begin point on the trajectory:
  Lon =    -1.081009 +/- 0.0003 deg
  Lat =    51.604581 +/- 0.0008 deg
  Ht  = 111290.56 +/- 122.83 m
End point on the trajectory:
  Lon =    -1.268070 +/- 0.0001 deg
  Lat =    51.507426 +/- 0.0006 deg
  Ht  = 92227.48 +/- 63.54 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
    UK0001,    True,    -1.778230,    50.857470,   24.00,   0.000000,   0.000000,   108596.52,    92762.19,          0.038211,       nan,       nan,              12.81, 0.0000,    True,    True, {"ff_name": "FF_UK0001_20210813_004657_061_0415744.fits"}
    UK002B,   False,    -1.367130,    50.815550,   22.00,   0.000000,   0.000000,   111290.56,    92227.48,          0.015757,     10.57,     34.94,              23.90, 1.0000,    True,    True, {"ff_name": "FF_UK002B_20210813_004659_256_0418304.fits"}
    UK002H,   False,    -2.412630,    53.386080,   20.00,   0.000000,   0.000000,   109688.49,    93646.61,          0.010897,     43.16,     17.47,              79.15, 1.0000,    True,    True, {"ff_name": "FF_UK002H_20210813_004704_860_0395008.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,     UK0001,       1,  0.070805, 2459439.532687958330,  57.44482,  70.79285,               29.60998,  48.39252,        29.60759,       48.42146,     57.44482,     +70.79285,      57.36322,      +70.80354,  3576811.25, -1874480.94,  5059785.72,      51.590917,       -1.107399,  108596.52,  144197.38,       0.00,             4026.38,   -42.90,      0.00,           60620.67,    -65.52,    -32.04,         104.33,  +2.43,  +1.64
  1,     UK0001,       1,  0.110669, 2459439.532688419800,  57.82405,  71.02909,               29.21342,  48.35023,        29.20795,       48.40882,     57.82405,     +71.02909,      57.65707,      +71.05115,  3575813.78, -1875600.09,  5057360.61,      51.580117,       -1.128201,  106470.31,  141417.99,    2851.07,             6877.46,   418.71,  71519.98,           60620.67,   -130.05,    -63.92,         211.35,  +1.55,  +0.80
  2,     UK0001,       1,  0.150525, 2459439.532688880805,  57.94901,  71.23317,               28.90286,  48.37685,        28.90078,       48.39869,     57.94901,     +71.23317,      57.88659,      +71.24140,  3575076.47, -1876427.36,  5055567.99,      51.572127,       -1.143624,  104898.97,  139364.52,    4958.55,             8984.94,   137.21,  52877.41,           60620.67,    -47.84,    -23.34,          78.78,  +0.99,  +0.27
  3,     UK0001,       1,  0.190397, 2459439.532689342275,  58.27151,  71.44890,               28.54567,  48.34752,        28.54173,       48.38552,     58.27151,     +71.44890,      58.16157,      +71.46343,  3574238.89, -1877367.12,  5053531.61,      51.563044,       -1.161124,  103114.32,  137034.54,    7352.61,            11379.00,   141.33,  60043.63,           60620.67,    -81.85,    -40.03,         137.15,  +0.89,  +0.21
  4,     UK0001,       1,  0.230261, 2459439.532689803746,  58.58922,  71.67194,               28.17949,  48.32319,        28.17417,       48.37090,     58.58922,     +71.67194,      58.44980,      +71.69043,  3573409.71, -1878297.46,  5051515.62,      51.554044,       -1.178452,  101347.91,  134730.26,    9722.70,            13749.08,   121.95,  59454.25,           60071.60,   -101.03,    -49.47,         172.22,  +1.02,  +0.37
  5,     UK0001,       1,  0.270105, 2459439.532690264750,  58.78611,  71.89879,               27.82655,  48.33690,        27.82434,       48.35605,     58.78611,     +71.89879,      58.73028,      +71.90624,  3572646.69, -1879153.56,  5049660.53,      51.545756,       -1.194413,   99722.80,  132611.82,   11903.63,            15930.01,   -85.38,  54736.74,           59153.01,    -39.95,    -19.45,          69.11,  +0.57,  -0.04
  6,     UK0001,       1,  0.309957, 2459439.532690726221,  59.15416,  72.13933,               27.42927,  48.30554,        27.42530,       48.33757,     59.15416,     +72.13933,      59.05911,      +72.15200,  3571803.07, -1880100.11,  5047609.44,      51.536584,       -1.212046,   97926.36,  130272.57,   14314.98,            18341.37,   -62.77,  60507.71,           58969.99,    -65.68,    -32.04,         115.70,  +0.55,  -0.02
  7,     UK0001,       1,  0.349801, 2459439.532691187225,  59.59321,  72.40165,               26.99160,  48.26241,        26.98447,       48.31539,     59.59321,     +72.40165,      59.43345,      +72.42300,  3570903.39, -1881109.56,  5045422.06,      51.526795,       -1.230842,   96010.98,  127781.33,   16886.57,            20912.95,   120.55,  64541.33,           59357.80,   -106.55,    -52.14,         191.48,  +0.11,  -0.42
  8,     UK0001,       1,  0.389569, 2459439.532691647764,  59.75878,  72.71156,               26.52629,  48.31387,        26.52944,       48.29071,     59.75878,     +72.71156,      59.83208,      +72.70223,  3570009.35, -1882112.66,  5043248.41,      51.517059,       -1.249524,   94108.06,  125309.15,   19442.01,            23468.39,   292.29,  64258.77,           59864.69,     45.80,     22.11,          83.72,  +1.03,  +0.54
  9,     UK0001,       1,  0.429477, 2459439.532692109700,  60.24258,  72.89258,               26.20005,  48.23585,        26.19470,       48.27206,     60.24258,     +72.89258,      60.13152,      +72.90751,  3569376.93, -1882822.24,  5041710.82,      51.510166,       -1.262790,   92762.19,  123561.54,   21249.67,            25276.05,  -292.16,  45295.56,           59327.12,    -70.54,    -34.39,         131.00,  +1.48,  +1.02
  0,     UK002B,       0,  0.009120, 2459439.532687249593,  60.25298,  81.92452,               12.71882,  50.37755,        12.71953,       50.37417,     60.25298,     +81.92452,      60.27645,      +81.92360,  3578074.73, -1873063.31,  5062857.60,      51.604581,       -1.081009,  111290.56,  143623.32,       0.00,              414.94,    43.04,      0.00,           58649.10,      8.20,      2.49,          12.30,  +2.30,  +1.51
  1,     UK002B,       0,  0.048928, 2459439.532687710598,  60.87603,  82.32303,               12.08152,  50.34902,        12.08793,       50.32000,     60.87603,     +82.32303,      61.08670,      +82.31481,  3577216.93, -1874025.75,  5060772.06,      51.595306,       -1.098918,  109461.45,  141383.19,    2451.85,             2866.80,   108.78,  61591.94,           58649.10,     69.23,     20.90,         105.50,  +1.02,  +0.27
  2,     UK002B,       0,  0.088780, 2459439.532688171603,  61.98008,  82.69505,               11.47228,  50.26134,        11.47170,       50.26380,     61.98008,     +82.69505,      61.96176,      +82.69579,  3576404.00, -1874937.86,  5058795.59,      51.586509,       -1.115901,  107728.36,  139266.91,    4775.48,             5190.42,    43.66,  58306.36,           58649.10,     -5.79,     -1.76,           8.96,  +0.63,  -0.09
  3,     UK002B,       0,  0.128596, 2459439.532688632607,  62.75585,  83.07846,               10.85673,  50.22585,        10.86191,       50.20490,     62.75585,     +83.07846,      62.92362,      +83.07185,  3575621.64, -1875815.68,  5056893.45,      51.578035,       -1.132254,  106060.78,  137236.67,    7011.72,             7426.67,  -106.67,  56164.51,           58649.10,     48.65,     14.70,          76.38,  +0.35,  -0.34
  4,     UK002B,       0,  0.168416, 2459439.532689093612,  64.11236,  83.50019,               10.16642,  50.13890,        10.16780,       50.13361,     64.11236,     +83.50019,      64.15771,      +83.49840,  3574755.03, -1876788.01,  5054786.49,      51.568642,       -1.150352,  104214.03,  134995.80,    9488.76,             9903.70,   -16.47,  62205.76,           59100.48,     12.09,      3.66,          19.30,  +0.20,  -0.45
  5,     UK002B,       0,  0.208224, 2459439.532689554151,  65.56688,  83.92981,                9.46304,  50.05931,         9.46372,       50.05686,     65.56688,     +83.92981,      65.58972,      +83.92893,  3573901.90, -1877745.22,  5052712.30,      51.559387,       -1.168175,  102396.39,  132798.15,   11927.28,            12342.22,    35.95,  61257.04,           59537.40,      5.52,      1.67,           8.95,  +0.12,  -0.50
  6,     UK002B,       0,  0.248032, 2459439.532690014690,  67.29619,  84.36209,                8.74948,  49.97163,         8.74869,       49.97431,     67.29619,     +84.36209,      67.27162,      +84.36314,  3573060.80, -1878688.93,  5050667.35,      51.550255,       -1.185751,  100604.76,  130640.05,   14331.41,            14746.35,    53.98,  60393.23,           59785.13,     -5.95,     -1.80,           9.81,  +0.04,  -0.54
  7,     UK002B,       0,  0.287844, 2459439.532690475695,  69.58781,  84.80115,                8.01020,  49.85803,         8.00245,       49.88312,     69.58781,     +84.80115,      69.33243,      +84.81188,  3572208.46, -1879645.26,  5048595.07,      51.540992,       -1.203562,   98789.57,  128462.26,   16767.67,            17182.62,   103.89,  61194.22,           60005.77,    -54.89,    -16.68,          92.11,  -0.28,  -0.82
  8,     UK002B,       0,  0.327608, 2459439.532690935768,  71.40002,  85.24731,                7.27977,  49.81591,         7.28774,       49.79107,     71.40002,     +85.24731,      71.67439,      +85.23588,  3571415.96, -1880534.45,  5046668.27,      51.532373,       -1.220137,   97102.17,  126445.95,   19032.90,            19447.85,   -14.34,  56966.85,           59906.45,     53.59,     16.17,          91.32,  -0.25,  -0.76
  9,     UK002B,       0,  0.367420, 2459439.532691396773,  74.43897,  85.66649,                6.55304,  49.70136,         6.55622,       49.69192,     74.43897,     +85.66649,      74.55144,      +85.66170,  3570627.11, -1881419.54,  5044750.35,      51.523787,       -1.236639,   95422.87,  124447.63,   21287.70,            21702.64,  -145.89,  56636.07,           59677.51,     20.08,      6.07,          34.78,  -0.24,  -0.71
 10,     UK002B,       0,  0.407188, 2459439.532691856846,  78.67090,  86.14631,                5.70051,  49.57366,         5.70197,       49.56954,     78.67090,     +86.14631,      78.72476,      +86.14395,  3569731.65, -1882424.25,  5042573.24,      51.514033,       -1.255351,   93517.05,  122190.46,   23847.21,            24262.16,    29.91,  64361.12,           59765.24,      8.63,      2.61,          15.22,  -0.11,  -0.55
 11,     UK002B,       0,  0.447036, 2459439.532692318317,  82.48814,  86.45872,                5.11064,  49.46675,         5.10558,       49.48053,     82.48814,     +86.45872,      82.30821,      +86.46738,  3569125.65, -1883104.18,  5041099.88,      51.507426,       -1.268070,   92227.48,  120669.65,   25579.36,            25994.30,  -626.45,  43468.84,           59188.48,    -28.56,     -8.66,          51.01,  +2.10,  +1.69
  0,     UK002H,       1,  0.000000, 2459439.532687138766, 353.65910,  -7.70894,              154.91362,  25.96907,       154.87806,       25.94159,    353.65910,      -7.70894,     353.69738,       -7.72734,  3578220.21, -1872900.08,  5063211.31,      51.606153,       -1.077960,  111600.82,  246409.20,       0.00,                0.89,   175.66,      0.00,           57936.70,     67.97,    168.10,         151.78,  +4.69,  +2.73
  1,     UK002H,       0,  0.040480, 2459439.532687607221, 353.43570,  -8.25499,              155.30485,  25.49693,       155.30443,       25.49661,    353.43570,      -8.25499,     353.43632,       -8.25521,  3577323.42, -1873906.28,  5061030.95,      51.596458,       -1.096678,  109688.49,  245937.19,    2563.32,             2562.43,   310.82,  63323.23,           57936.70,      0.80,      1.98,           1.79,  +2.41,  +0.46
  2,     UK002H,       0,  0.080864, 2459439.532688074745, 353.22067,  -8.68755,              155.65238,  25.13137,       155.65202,       25.13109,    353.22067,      -8.68755,     353.22140,       -8.68773,  3576590.94, -1874728.12,  5059250.08,      51.588532,       -1.111998,  108126.86,  245570.17,    4656.99,             4656.10,   -16.15,  51844.04,           57936.70,      0.69,      1.70,           1.54,  +1.52,  -0.43
  3,     UK002H,       0,  0.121300, 2459439.532688542735, 352.94460,  -9.18452,              156.07909,  24.71710,       156.05736,       24.70044,    352.94460,      -9.18452,     352.96862,       -9.19583,  3575732.87, -1875690.87,  5057163.89,      51.579240,       -1.129920,  106297.85,  245163.08,    7109.62,             7108.72,    12.73,  60654.46,           57936.70,     41.45,    102.45,          92.98,  +1.16,  -0.79
  4,     UK002H,       0,  0.161756, 2459439.532689010724, 352.69903,  -9.70358,              156.47604,  24.27255,       156.46451,       24.26372,    352.69903,      -9.70358,     352.71222,       -9.70960,  3574867.73, -1876661.57,  5055060.48,      51.569864,       -1.147990,  104454.16,  244776.98,    9582.48,             9581.59,    60.64,  61124.75,           58643.56,     22.00,     54.36,          49.41,  +1.21,  -0.73
  5,     UK002H,       0,  0.202168, 2459439.532689478714, 352.45955, -10.17565,              156.85086,  23.87084,       156.83732,       23.86050,    352.45955,     -10.17565,     352.47511,      -10.18273,  3574073.09, -1877553.15,  5053128.50,      51.561245,       -1.164604,  102761.08,  244443.61,   11853.80,            11852.91,   -90.34,  56204.12,           58497.14,     25.81,     63.78,          58.06,  +0.88,  -1.06
  6,     UK002H,       0,  0.242600, 2459439.532689946704, 352.23378, -10.66681,              157.21329,  23.44617,       157.21554,       23.44788,    352.23378,     -10.66681,     352.23234,      -10.66563,  3573263.91, -1878461.05,  5051161.15,      51.552461,       -1.181522,  101037.35,  244125.57,   14166.70,            14165.81,  -200.95,  57204.76,           58306.37,     -4.29,    -10.58,           9.65,  +0.76,  -1.18
  7,     UK002H,       0,  0.283068, 2459439.532690415159, 351.95965, -11.20469,              157.63456,  22.98588,       157.63475,       22.98602,    351.95965,     -11.20469,     351.96064,      -11.20460,  3572362.77, -1879472.13,  5048970.22,      51.542670,       -1.200346,   99118.15,  243797.30,   16742.46,            16741.57,   -50.86,  63649.20,           58672.55,     -0.35,     -0.86,           0.79,  +0.64,  -1.30
  8,     UK002H,       0,  0.323524, 2459439.532690883148, 351.69863, -11.72857,              158.03501,  22.53473,       158.03843,       22.53733,    351.69863,     -11.72857,     351.69623,      -11.72677,  3571491.54, -1880449.65,  5046852.03,      51.533196,       -1.218553,   97263.08,  243505.39,   19232.71,            19231.81,    14.44,  61554.46,           59035.65,     -6.53,    -16.12,          14.73,  +0.60,  -1.33
  9,     UK002H,       0,  0.363972, 2459439.532691351604, 351.43701, -12.23925,              158.42929,  22.09514,       158.43145,       22.09678,    351.43701,     -12.23925,     351.43616,      -12.23811,  3570639.92, -1881405.16,  5044781.50,      51.523927,       -1.236357,   95450.15,  243244.38,   21666.91,            21666.02,    24.17,  60181.03,           59282.96,     -4.12,    -10.18,           9.31,  +0.64,  -1.29
 10,     UK002H,       0,  0.404412, 2459439.532691819593, 351.18001, -12.75054,              158.81557,  21.65257,       158.82090,       21.65659,    351.18001,     -12.75054,     351.17584,      -12.74771,  3569792.53, -1882355.94,  5042721.26,      51.514696,       -1.254076,   93646.61,  243008.68,   24089.02,            24088.13,    22.30,  59894.03,           59445.61,    -10.15,    -25.06,          22.95,  +1.07,  -0.86

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.