Orbital Analysis for matched events on 20210813_225139.677_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 64.86° Bg 36.18° Vg 55.85km/s
mass 0.01289g, abs. mag 0.5
Path Details
------------
start -0.64° 51.53° 110.30km
end   -0.74° 51.45° 102.79km

Orbit Details
-------------
Semimajor axis 2.54A.U., eccentricity 0.64, inclination 113.56°, Period 4.04Y, LA Sun 141.10°, last Perihelion 2021-07-13

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: 2459440.452542563435
Time: 2021-08-13 22:51:39.677481 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0002 and UK002B
 Convergence angle = 38.85540 deg
 R.A. =  50.95203  Dec = +57.09868 deg

Best intersection: Stations UK0002 and UK002B with Qconv = 38.86 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   2312426.96 +/- 75.95 m
 Y =  -3318974.12 +/- 53.84 m
 Z =   5056462.65 +/- 246.94 m
 Vx =    19421.15 +/- 5346.70 m/s
 Vy =    24366.33 +/- 7062.18 m/s
 Vz =    47653.93 +/- 13119.07 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+5.304593e+03, +4.091128e+03, +1.816499e+04, +1.613181e+04, +5.849371e+03, +8.367950e+04
+4.091128e+03, +3.226251e+03, +1.409674e+04, +1.235947e+04, +4.412584e+03, +6.396027e+04
+1.816499e+04, +1.409674e+04, +6.268707e+04, +5.495212e+04, +1.921835e+04, +2.869222e+05
+1.613181e+04, +1.235947e+04, +5.495212e+04, +6.897651e+04, +3.339119e+04, +3.045284e+05
+5.849371e+03, +4.412584e+03, +1.921835e+04, +3.339119e+04, +2.129881e+04, +1.327153e+05
+8.367950e+04, +6.396027e+04, +2.869222e+05, +3.045284e+05, +1.327153e+05, +1.460159e+06

Timing offsets (from input data):
    UK0001: 0.000000 s
    UK0002: -0.002462 s
    UK000F: 0.000000 s
    UK000S: 0.000000 s
    UK002B: 0.000000 s

Reference point on the trajectory:
  Time: 2021-08-13 22:51:39.677481 UTC
  Lon     = +-0.638178 +/- 0.0012 deg
  Lat     = +51.525013 +/- 0.0013 deg
  Lat geo = +51.340613 +/- 0.0013 deg
  Ht      =  110274.79 +/- 190.94 m

  JD dynamic   = 2459440.453343304340 
  LST apparent = 304.8660620700 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  51.44345 +/- 0.4888 deg
  Dec       = +56.82072 +/- 0.5173 deg
  Azimuth   =  39.20629 +/- 0.2667 deg
  Elevation = +33.92418 +/- 0.5366 deg
  Vavg      =  54.76930 +/- 1.1531 km/s
  Vinit     =  56.93677 +/- 15.3447 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  51.29009 +/- 0.4888 deg
  Dec       = +56.58316 +/- 0.5173 deg
  Azimuth   =  39.48239 +/- 0.2667 deg
  Elevation = +33.81944 +/- 0.5366 deg
  Vavg      =  54.92457 +/- 1.1531 km/s
  Vinit     =  57.09204 +/- 15.3447 km/s
Radiant (geocentric, J2000):
  R.A.   =  51.79520 +/- 0.5359 deg
  Dec    = +56.33332 +/- 0.5518 deg
  Vg     =  55.84521 +/- 2.4222 km/s
  Vinf   =  56.93677 +/- 2.3810 km/s
  Zc     =  56.21878 +/- 0.5361 deg
  Zg     =  56.81120 +/- 0.5825 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  64.86369 +/- 0.1559 deg
  Bg     = +36.18113 +/- 0.6101 deg
  Vh     =  37.44186 +/- 2.4049 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  86.98913 +/- 1.8018 deg
  Bh     = +61.70392 +/- 0.4589 deg
  Vh_x   =  -0.93225 +/- 0.7573 km/s
  Vh_y   = -17.72399 +/- 1.3636 km/s
  Vh_z   = -32.96792 +/- 1.9615 km/s
Orbit:
  La Sun = 141.103235 +/- -0.0000 deg
  a      =   2.538343 +/- 9.9230 AU
  e      =   0.640614 +/- 0.2083
  i      = 113.564954 +/- 0.8487 deg
  peri   = 138.167226 +/- 5.1630 deg
  node   = 141.101854 +/- 0.0001 deg
  Pi     = 279.269080 +/- 5.1630 deg
  q      =   0.912245 +/- 0.0142 AU
  f      =  41.828718 +/- 5.1631 deg
  M      =   7.558443 +/- nan deg
  Q      =   4.164441 +/- 19.8532 AU
  n      =   0.243713 +/- 0.0773 deg/day
  T      =   4.044139 +/- 489897941.9283 years
  Last perihelion JD = 2459409.439637 (2021-07-13 22:33:04.637301) +/- 2.9581 days
  Tj     =   1.621477 +/- 1.2078
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +9.649010e-03, +9.689517e-04, +3.086575e-01, -2.859353e-08, +6.183145e-03, +3.687723e-04
q   , +9.689517e-04, +9.908825e-05, +3.145963e-02, -2.644362e-09, +6.312003e-04, +3.412008e-05
Tp  , +3.086575e-01, +3.145963e-02, +1.000165e+01, -8.453472e-07, +2.005825e-01, +1.090656e-02
node, -2.859353e-08, -2.644362e-09, -8.453472e-07, +1.310165e-13, -1.685184e-08, -1.687685e-09
peri, +6.183145e-03, +6.312003e-04, +2.005825e-01, -1.685184e-08, +4.023347e-03, +2.174292e-04
i   , +3.687723e-04, +3.412008e-05, +1.090656e-02, -1.687685e-09, +2.174292e-04, +2.173998e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 2.853764
 a2 = 18.742137

Mean time residuals from time vs. length:
  Station with reference time: UK002B
  Avg. res. = 9.763e-06 s
  Stddev    = 3.12e-03 s

Begin point on the trajectory:
  Lon =    -0.637802 +/- 0.0012 deg
  Lat =    51.525301 +/- 0.0013 deg
  Ht  = 110303.04 +/- 191.69 m
End point on the trajectory:
  Lon =    -0.738861 +/- 0.0013 deg
  Lat =    51.448618 +/- 0.0014 deg
  Ht  = 102791.77 +/- 221.29 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, 726.984885,   0.000000,   109244.17,   101668.94,          0.074984,       nan,       nan,              12.54, 0.0000,    True,    True, {"ff_name": "FF_UK0001_20210813_225140_119_0244736.fits"}
    UK0002,   False,     0.265820,    50.757180,   60.00,   0.000000, 112.284858,   109740.40,   103771.53,          0.015627,     13.53,     39.18,              56.26, 1.0000,    True,    True, {"ff_name": "FF_UK0002_20210813_225136_248_0255488.fits"}
    UK000F,    True,    -1.306160,    51.883100,   80.00, 296.429478,   2.287070,   106782.28,   102997.06,          0.052050,       nan,       nan,              60.76, 0.0000,   False,    True, {"ff_name": "FF_UK000F_20210813_225138_883_0231680.fits"}
    UK000S,    True,    -1.778230,    50.857470,   24.00, 396.959734,   0.000000,   109039.51,   102615.58,          0.088642,       nan,       nan,              12.54, 0.0000,    True,    True, {"ff_name": "FF_UK000S_20210813_225140_432_0243456.fits"}
    UK002B,   False,    -1.367130,    50.815550,   22.00,   1.255455,  20.630778,   110303.04,   102791.77,          0.011924,      9.83,     26.53,              15.42, 1.0000,    True,    True, {"ff_name": "FF_UK002B_20210813_225139_931_0248576.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,  0.046506, 2459440.452543101739,  26.39581,  58.57837,               46.70998,  44.73515,        46.68757,       44.74488,     26.39581,     +58.57837,      26.39396,      +58.59699,  2311796.96, -3319764.54,  5054916.80,      51.514518,       -0.652094,  109244.17,  153845.36,       0.00,             1846.98,  -832.17,      0.00,           57027.55,     24.89,    -43.46,          67.15,  +1.96,  +1.02
  1,     UK0001,       1,  0.086418, 2459440.452543563675,  25.96582,  58.56036,               46.88114,  44.92453,        46.84840,       44.93878,     25.96582,     +58.56036,      25.96285,      +58.58752,  2310925.41, -3320858.01,  5052778.26,      51.499992,       -0.671239,  107819.00,  151355.08,    2555.11,             4402.09,  -549.52,  64018.66,           57027.55,     35.70,    -62.39,          97.96,  +1.69,  +0.79
  2,     UK0001,       1,  0.126362, 2459440.452544026077,  25.63149,  58.52917,               47.03543,  45.06419,        46.97407,       45.09103,     25.63149,     +58.52917,      25.62516,      +58.58001,  2310262.38, -3321689.86,  5051151.39,      51.488934,       -0.685840,  106735.26,  149460.76,    4498.89,             6345.87,  -880.02,  48662.64,           57027.55,     65.86,   -115.49,         183.48,  +1.59,  +0.72
  3,     UK0001,       1,  0.166286, 2459440.452544488013,  25.20002,  58.48945,               47.23366,  45.24539,        47.13874,       45.28712,     25.20002,     +58.48945,      25.18891,      +58.56798,  2309428.98, -3322735.48,  5049106.45,      51.475028,       -0.704149,  105373.58,  147083.26,    6942.19,             8789.17,  -709.86,  61198.68,           57027.55,     99.88,   -175.83,         283.58,  +1.56,  +0.72
  4,     UK0001,       1,  0.206182, 2459440.452544949949,  24.75593,  58.48324,               47.39356,  45.44860,        47.30739,       45.48644,     24.75593,     +58.48324,      24.74533,      +58.55429,  2308607.72, -3323765.85,  5047091.33,      51.461315,       -0.722189,  104032.37,  144742.68,    9349.85,            11196.83,  -573.76,  60348.33,           57829.36,     89.11,   -156.53,         256.68,  +2.08,  +1.28
  5,     UK0001,       1,  0.246118, 2459440.452545411885,  24.33615,  58.42881,               47.60587,  45.61910,        47.47103,       45.67876,     24.33615,     +58.42881,      24.31742,      +58.53988,  2307839.44, -3324729.76,  5045206.18,      51.448480,       -0.739073,  102778.19,  142554.87,   11602.22,            13449.20,  -595.21,  56399.57,           57854.23,    136.72,   -241.54,         401.59,  +2.68,  +1.91
  6,     UK0001,       1,  0.286026, 2459440.452545873821,  23.94711,  58.41724,               47.75289,  45.79544,        47.62050,       45.85400,     23.94711,     +58.41724,      23.92786,      +58.52598,  2307159.67, -3325582.62,  5043538.22,      51.437117,       -0.754029,  101668.94,  140620.27,   13595.09,            15442.08,  -874.57,  49936.73,           57015.13,    132.23,   -233.32,         393.37,  +3.67,  +2.93
  0,     UK0002,       0,  0.009100, 2459440.452542697079, 217.34702,  65.17525,              323.40476,  45.25257,       323.41693,       45.22449,    217.34702,     +65.17525,     217.27805,      +65.17060,  2312100.32, -3319383.94,  5055661.15,      51.519572,       -0.645341,  109740.40,  153245.09,       0.00,              957.63,   408.27,      0.00,           53627.98,     74.22,     25.60,         105.68,  +3.40,  +2.47
  1,     UK0002,       0,  0.049428, 2459440.452543163672, 217.53602,  64.55979,              322.57184,  45.05206,       322.57754,       45.03934,    217.53602,     +64.55979,     217.50554,      +64.55772,  2311438.22, -3320214.62,  5054036.57,      51.508540,       -0.659928,  108657.49,  152217.08,    1941.05,             2898.68,    53.17,  48131.58,           53627.98,     33.52,     11.58,          48.06,  +1.59,  +0.68
  2,     UK0002,       0,  0.089784, 2459440.452543630730, 217.76951,  63.87129,              321.63843,  44.83329,       321.64253,       44.82446,    217.76951,     +63.87129,     217.74903,      +63.86988,  2310705.52, -3321133.89,  5052238.72,      51.496325,       -0.676050,  107459.55,  151099.98,    4089.11,             5046.73,   -96.51,  53227.67,           53627.98,     23.17,      8.00,          33.46,  +1.48,  +0.58
  3,     UK0002,       0,  0.130200, 2459440.452544098720, 218.00044,  63.08518,              320.58849,  44.56564,       320.58610,       44.57059,    218.00044,     +63.08518,     218.01244,      +63.08595,  2309883.31, -3322165.45,  5050221.26,      51.482610,       -0.694119,  106115.85,  149872.72,    6499.56,             7457.19,    12.79,  59641.17,           53627.98,    -12.95,     -4.48,          18.86,  +1.43,  +0.55
  4,     UK0002,       0,  0.170600, 2459440.452544566244, 218.21523,  62.32846,              319.58624,  44.30078,       319.57809,       44.31707,    218.21523,     +62.32846,     218.25282,      +62.33094,  2309104.49, -3323142.59,  5048310.24,      51.469611,       -0.711239,  104843.59,  148737.37,    8782.85,             9740.47,    -4.18,  56516.89,           54794.78,    -42.44,    -14.69,          62.28,  +1.67,  +0.81
  5,     UK0002,       0,  0.210928, 2459440.452545032836, 218.44065,  61.68415,              318.72441,  44.08977,       318.72272,       44.09305,    218.44065,     +61.68415,     218.44884,      +61.68464,  2308447.96, -3323966.29,  5046699.32,      51.458647,       -0.725695,  103771.53,  147801.94,   10707.57,            11665.19,  -375.60,  47726.69,           54119.38,     -8.52,     -2.95,          12.59,  +3.34,  +2.49
  0,     UK000F,       1,  0.118437, 2459440.452543934342, 327.69916,  27.21859,              135.37410,  59.68184,       135.32324,       59.62303,    327.69916,     +27.21859,     327.75713,      +27.17978,  2310291.15, -3321653.77,  5051221.98,      51.489414,       -0.685181,  106782.28,  123332.65,       0.00,             6261.53,  -513.14,      0.00,           56131.90,    -53.19,    127.49,         231.03,  +0.72,  +0.26
  1,     UK000F,       1,  0.158909, 2459440.452544402797, 327.02418,  26.36002,              137.22246,  59.21542,       137.20258,       59.19382,    327.02418,     +26.36002,     327.04617,      +26.34569,  2309445.29, -3322715.02,  5049146.47,      51.475300,       -0.703763,  105400.23,  122268.10,    2479.82,             8741.35,  -337.66,  61272.49,           56131.90,    -19.59,     47.05,          85.98,  +0.67,  +0.23
  2,     UK000F,       1,  0.199353, 2459440.452544870786, 326.37539,  25.55027,              138.94952,  58.76335,       138.94718,       58.76094,    326.37539,     +25.55027,     326.37863,      +25.54866,  2308653.42, -3323708.52,  5047203.44,      51.462078,       -0.721166,  104106.98,  121308.95,    4801.34,            11062.87,  -318.90,  57400.78,           56131.90,     -2.20,      5.28,           9.73,  +1.12,  +0.70
  3,     UK000F,       1,  0.239789, 2459440.452545338776, 325.87214,  24.80568,              140.36208,  58.29637,       140.43213,       58.36556,    325.87214,     +24.80568,     325.80357,      +24.85208,  2307973.53, -3324561.52,  5045535.21,      51.450720,       -0.736129,  102997.06,  120514.65,    6794.54,            13056.08,  -627.99,  49292.85,           56131.90,     63.09,   -152.27,         282.10,  +3.79,  +3.38
  0,     UK000S,       1,  0.046642, 2459440.452543103136,  26.33911,  58.54152,               46.77537,  44.74381,        46.71087,       44.77202,     26.33911,     +58.54152,      26.33306,      +58.59522,  2311671.82, -3319921.54,  5054609.75,      51.512433,       -0.654819,  109039.51,  153488.52,       0.00,             2213.84,  -473.05,      0.00,           57621.29,     71.28,   -125.24,         193.66,  +1.42,  +0.49
  1,     UK000S,       1,  0.086462, 2459440.452543564141,  25.94874,  58.52258,               46.93418,  44.91468,        46.85687,       44.94857,     25.94874,     +58.52258,      25.94087,      +58.58681,  2310881.59, -3320912.99,  5052670.74,      51.499261,       -0.672193,  107747.37,  151230.23,    2316.72,             4530.56,  -423.55,  58179.92,           57621.29,     83.98,   -147.71,         231.75,  +1.90,  +1.00
  2,     UK000S,       1,  0.126298, 2459440.452544025145,  25.58060,  58.52001,               47.06442,  45.08344,        46.99423,       45.11419,     25.58060,     +58.52001,      25.57314,      +58.57818,  2310161.33, -3321816.64,  5050903.44,      51.487249,       -0.688040,  106570.13,  149173.12,    4428.28,             6642.12,  -580.12,  53006.30,           57621.29,     75.14,   -131.93,         209.94,  +1.28,  +0.41
  3,     UK000S,       1,  0.166094, 2459440.452544485684,  25.13547,  58.47361,               47.27578,  45.26799,        47.16485,       45.31688,     25.13547,     +58.47361,      25.12204,      +58.56540,  2309303.12, -3322893.39,  5048797.63,      51.472927,       -0.706887,  105168.01,  146725.37,    6944.31,             9158.15,  -329.96,  63223.06,           57621.29,    116.29,   -205.15,         331.51,  +1.11,  +0.28
  4,     UK000S,       1,  0.205906, 2459440.452544946689,  24.72589,  58.43827,               47.46079,  45.44194,        47.32228,       45.50325,     24.72589,     +58.43827,      24.70754,      +58.55269,  2308538.70, -3323852.44,  5046921.97,      51.460162,       -0.723690,  103919.68,  144546.64,    9185.33,            11399.17,  -355.70,  56290.18,           57761.13,    142.58,   -252.27,         413.50,  +1.64,  +0.84
  5,     UK000S,       1,  0.245706, 2459440.452545407228,  24.28224,  58.41525,               47.64150,  45.63808,        47.49333,       45.70376,     24.28224,     +58.41525,      24.26119,      +58.53732,  2307739.79, -3324854.78,  5044961.68,      51.446814,       -0.741240,  102615.58,  142272.14,   11527.49,            13741.33,  -279.63,  58848.08,           57956.31,    149.77,   -265.07,         441.39,  +2.69,  +1.92
  0,     UK002B,       0,  0.000000, 2459440.452542563435,  26.64565,  69.08006,               32.57526,  48.88871,        32.57803,       48.88930,     26.64565,     +69.08006,      26.64251,      +69.07850,  2312444.23, -3318952.46,  5056505.01,      51.525301,       -0.637802,  110303.04,  145434.64,       0.00,               50.61,    19.38,      0.00,           57204.18,     -4.56,      1.69,           6.90,  +3.08,  +2.27
  1,     UK002B,       0,  0.039764, 2459440.452543023508,  26.03500,  69.24042,               32.44069,  49.14390,        32.44564,       49.14496,     26.03500,     +69.24042,      26.02962,      +69.23763,  2311639.81, -3319961.70,  5054531.20,      51.511900,       -0.655488,  108987.16,  143170.05,    2358.30,             2307.69,    12.43,  59307.30,           57204.18,     -8.00,      2.96,          12.29,  +1.64,  +0.86
  2,     UK002B,       0,  0.079548, 2459440.452543484047,  25.48146,  69.39622,               32.29815,  49.37593,        32.32159,       49.38098,     25.48146,     +69.39622,      25.45578,      +69.38301,  2310919.30, -3320865.68,  5052763.27,      51.499890,       -0.671343,  107809.02,  141144.00,    4470.62,             4420.01,  -140.42,  53094.79,           57204.18,    -37.15,     13.73,          57.88,  +1.59,  +0.84
  3,     UK002B,       0,  0.119300, 2459440.452543944120,  24.77278,  69.55175,               32.17348,  49.65768,        32.17510,       49.65802,     24.77278,     +69.55175,      24.77152,      +69.55084,  2310097.80, -3321896.35,  5050747.56,      51.486189,       -0.689394,  106466.32,  138837.93,    6878.98,             6828.37,     4.59,  60584.69,           57204.18,     -2.50,      0.93,           3.96,  +1.34,  +0.63
  4,     UK002B,       0,  0.159068, 2459440.452544404659,  24.11319,  69.69212,               32.05752,  49.91623,        32.03855,       49.91215,     24.11319,     +69.69212,      24.13427,      +69.70287,  2309367.66, -3322812.41,  5048956.00,      51.474004,       -0.705453,  105273.44,  136790.98,    9019.53,             8968.92,  -119.13,  53825.82,           56729.43,     28.83,    -10.69,          46.36,  +1.46,  +0.78
  5,     UK002B,       0,  0.198800, 2459440.452544864267,  23.36722,  69.86584,               31.89623,  50.20938,        31.87954,       50.20579,     23.36722,     +69.86584,      23.38573,      +69.87533,  2308549.10, -3323839.40,  5046947.48,      51.460336,       -0.723434,  103936.67,  134500.31,   11419.30,            11368.69,    18.43,  60399.01,           57117.51,     24.80,     -9.19,          40.57,  +1.75,  +1.11
  6,     UK002B,       0,  0.238564, 2459440.452545324806,  22.68007,  70.00830,               31.76707,  50.47218,        31.73630,       50.46556,     22.68007,     +70.00830,      22.71316,      +70.02583,  2307847.75, -3324719.33,  5045226.57,      51.448618,       -0.738861,  102791.77,  132540.31,   13475.45,            13424.84,  -189.45,  51708.75,           56676.65,     44.84,    -16.63,          74.43,  +3.22,  +2.61
  7,     UK002B,       1,  0.278320, 2459440.452545784879,  22.01227,  70.18083,               31.58262,  50.73248,        31.58688,       50.73340,     22.01227,     +70.18083,      22.00905,      +70.17840,  2307145.20, -3325600.77,  5043502.72,      51.436875,       -0.754312,  101645.37,  130580.14,   15535.09,            15484.48,  -393.39,  51807.10,           56087.19,     -6.09,      2.25,          10.25,  +5.40,  +4.82

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.