Orbital Analysis for matched events on 20210813_002613.772_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 61.89° Bg 37.77° Vg 59.01km/s
mass 0.06337g, abs. mag -1.5
Path Details
------------
start 2.99° 51.56° 106.40km
end   2.83° 51.48° 90.86km

Orbit Details
-------------
Semimajor axis 9.21A.U., eccentricity 0.90, inclination 114.25°, Period 27.94Y, LA Sun 140.21°, last Perihelion 2021-07-24

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: 2459439.518214963377
Time: 2021-08-13 00:26:13.772836 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000C and UK002C
 Convergence angle = 1.63845 deg
 R.A. =  49.45063  Dec = +30.86348 deg
Intersection 2 - Stations: UK000C and UK002F
 Convergence angle = 17.15987 deg
 R.A. =  47.15485  Dec = +45.68810 deg
Intersection 3 - Stations: UK000C and UK0032
 Convergence angle = 41.09557 deg
 R.A. =  44.75773  Dec = +55.73867 deg
Intersection 4 - Stations: UK002C and UK002F
 Convergence angle = 15.58230 deg
 R.A. =  47.53650  Dec = +47.23761 deg
Intersection 5 - Stations: UK002C and UK0032
 Convergence angle = 39.61680 deg
 R.A. =  45.79565  Dec = +56.66287 deg
Intersection 6 - Stations: UK002F and UK0032
 Convergence angle = 24.36185 deg
 R.A. =  52.76550  Dec = +61.69160 deg

Best intersection: Stations UK000C and UK0032 with Qconv = 41.10 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3540698.38 +/- 172.83 m
 Y =  -1945075.70 +/- 122.49 m
 Z =   5056063.15 +/- 210.63 m
 Vx =    22309.08 +/- 557.95 m/s
 Vy =    23540.32 +/- 158.06 m/s
 Vz =    50534.08 +/- 332.84 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+3.382621e+04, +2.156810e+04, +3.075828e+04, +7.221478e+04, +1.070753e+04, -4.043692e+04
+2.156810e+04, +1.664830e+04, +2.617191e+04, +3.185037e+04, +6.311636e+03, -2.299427e+04
+3.075828e+04, +2.617191e+04, +4.749153e+04, +2.737859e+04, +3.234414e+03, -2.596064e+04
+7.221478e+04, +3.185037e+04, +2.737859e+04, +3.108575e+05, +5.130134e+04, -1.340243e+05
+1.070753e+04, +6.311636e+03, +3.234414e+03, +5.130134e+04, +1.837194e+04, -2.455702e+04
-4.043692e+04, -2.299427e+04, -2.596064e+04, -1.340243e+05, -2.455702e+04, +6.882392e+04

Timing offsets (from input data):
    UK000C: 0.000000 s
    UK002C: 0.000176 s
    UK002F: 0.000310 s
    UK0032: 0.000169 s

Reference point on the trajectory:
  Time: 2021-08-13 00:26:13.772836 UTC
  Lon     = ++2.992490 +/- 0.0026 deg
  Lat     = +51.559661 +/- 0.0009 deg
  Lat geo = +51.375209 +/- 0.0009 deg
  Ht      =  106652.88 +/- 208.10 m

  JD dynamic   = 2459439.519015704282 
  LST apparent = 331.2178934429 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  46.53825 +/- 0.6247 deg
  Dec       = +57.30818 +/- 0.4642 deg
  Azimuth   =  51.47312 +/- 0.8255 deg
  Elevation = +48.09672 +/- 0.1287 deg
  Vavg      =  62.16812 +/- 0.4535 km/s
  Vinit     =  60.04610 +/- 0.0926 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  46.66898 +/- 0.6247 deg
  Dec       = +57.07986 +/- 0.4642 deg
  Azimuth   =  51.73378 +/- 0.8255 deg
  Elevation = +47.93318 +/- 0.1287 deg
  Vavg      =  62.32256 +/- 0.4535 km/s
  Vinit     =  60.20054 +/- 0.0926 km/s
Radiant (geocentric, J2000):
  R.A.   =  46.76121 +/- 0.6317 deg
  Dec    = +57.05943 +/- 0.4653 deg
  Vg     =  59.01149 +/- 0.0942 km/s
  Vinf   =  60.04610 +/- 0.0926 km/s
  Zc     =  42.01837 +/- 0.1301 deg
  Zg     =  42.40081 +/- 0.1317 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  61.88716 +/- 0.5938 deg
  Bg     = +37.76526 +/- 0.3342 deg
  Vh     =  40.67866 +/- 0.2143 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  79.49530 +/- 1.6243 deg
  Bh     = +62.67838 +/- 0.2535 deg
  Vh_x   =  -3.40400 +/- 0.5288 km/s
  Vh_y   = -18.35796 +/- 0.0896 km/s
  Vh_z   = -36.14072 +/- 0.2617 km/s
Orbit:
  La Sun = 140.205990 +/- -0.0000 deg
  a      =   9.208748 +/- 12.6482 AU
  e      =   0.895839 +/- 0.0191
  i      = 114.254874 +/- 0.5808 deg
  peri   = 152.511531 +/- 0.8407 deg
  node   = 140.205319 +/- 0.0000 deg
  Pi     = 292.716850 +/- 0.8407 deg
  q      =   0.959192 +/- 0.0040 AU
  f      =  27.484604 +/- 0.8408 deg
  M      =   0.696300 +/- 0.1425 deg
  Q      =  17.458303 +/- 25.2995 AU
  n      =   0.035270 +/- 0.0072 deg/day
  T      =  27.944832 +/- 113.7987 years
  Last perihelion JD = 2459419.776920 (2021-07-24 06:38:45.894204) +/- 0.4498 days
  Tj     =   0.079486 +/- 0.0954
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +4.109289e-04, -7.088538e-05, -6.229441e-03, +1.399429e-08, -2.387391e-04, -1.930538e-04
q   , -7.088538e-05, +1.775926e-05, +1.892990e-03, -2.998603e-09, +6.397444e-05, +4.137384e-05
Tp  , -6.229441e-03, +1.892990e-03, +2.161770e-01, -2.991915e-07, +7.003718e-03, +4.126749e-03
node, +1.399429e-08, -2.998603e-09, -2.991915e-07, +5.896402e-13, -1.055015e-08, -8.134638e-09
peri, -2.387391e-04, +6.397444e-05, +7.003718e-03, -1.055015e-08, +2.328478e-04, +1.455389e-04
i   , -1.930538e-04, +4.137384e-05, +4.126749e-03, -8.134638e-09, +1.455389e-04, +1.122302e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.000010
 a2 = 0.000000

Mean time residuals from time vs. length:
  Station with reference time: UK000C
  Avg. res. = 1.357e-06 s
  Stddev    = 1.17e-03 s

Begin point on the trajectory:
  Lon =     2.989927 +/- 0.0018 deg
  Lat =    51.558389 +/- 0.0004 deg
  Ht  = 106395.45 +/- 98.51 m
End point on the trajectory:
  Lon =     2.833660 +/- 0.0013 deg
  Lat =    51.481269 +/- 0.0007 deg
  Ht  = 90862.80 +/- 46.14 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
    UK000C,   False,    -0.727590,    51.263100,   57.00,   0.000005,   0.000000,   106395.45,    95272.27,          0.035284,     42.95,    165.66,              35.84, 0.3428,    True,   False, {"ff_name": "FF_UK000C_20210813_002608_614_0384768.fits"}
    UK002C,   False,    -1.801980,    51.351940,  130.00,   0.000034,   0.000000,   105863.99,    92998.20,          0.018252,     28.41,    106.70,              41.27, 0.4350,    True,    True, {"ff_name": "FF_UK002C_20210813_002611_497_0379904.fits"}
    UK002F,   False,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,   103569.49,    92357.92,          0.031401,     78.56,    150.14,              46.39, 0.5242,    True,    True, {"ff_name": "FF_UK002F_20210813_002612_650_0352512.fits"}
    UK0032,   False,    -0.023645,    52.984073,    6.00,   0.000000,   0.000000,   105780.03,    90862.80,          0.007401,     29.02,     21.27,              64.61, 0.8161,    True,    True, {"ff_name": "FF_UK0032_20210813_002609_109_0381440.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,     UK000C,       0,  0.000000, 2459439.518214963377,  50.58176,  21.47196,               81.28333,  20.83316,        81.31042,       20.85289,     50.58176,     +21.47196,      50.54710,      +21.46988,  3540569.87, -1945211.30,  5055772.06,      51.558389,       +2.989927,  106395.45,  283540.13,       0.00,              345.88,  -100.19,      0.00,           61858.51,   -153.75,    -39.88,         115.55,  +2.89,  +0.63
  1,     UK000C,       0,  0.040160, 2459439.518215428106,  50.61791,  21.16730,               81.47272,  20.58303,        81.51204,       20.61162,     50.61791,     +21.16730,      50.56796,      +21.16427,  3539615.35, -1946218.50,  5053609.90,      51.548935,       +2.970718,  104483.58,  281453.75,    2569.15,             2915.03,    -2.63,  63972.86,           61858.51,   -221.62,    -57.39,         167.77,  +2.81,  +0.56
  2,     UK000C,       0,  0.080312, 2459439.518215892836,  50.61698,  20.82940,               81.71254,  20.33066,        81.73323,       20.34571,     50.61698,     +20.82940,      50.59086,      +20.82782,  3538580.81, -1947310.14,  5051266.48,      51.538680,       +2.949910,  102411.94,  279202.59,    5353.67,             5699.55,   315.23,  69349.40,           61858.51,   -115.80,    -30.07,          88.39,  +1.19,  -1.04
  3,     UK000C,       0,  0.120448, 2459439.518216357566,  50.65325,  20.58624,               81.85702,  20.12597,        81.89350,       20.15246,     50.65325,     +20.58624,      50.60735,      +20.58344,  3537838.95, -1948092.94,  5049586.04,      51.531319,       +2.934939,  100926.69,  277591.26,    7350.41,             7696.30,  -139.06,  49749.48,           61858.51,   -203.08,    -52.62,         155.88,  +1.11,  -1.11
  4,     UK000C,       0,  0.160592, 2459439.518216822296,  50.65387,  20.27134,               82.07814,  19.88934,        82.09854,       19.90415,     50.65387,     +20.27134,      50.62851,      +20.26979,  3536899.91, -1949083.81,  5047458.93,      51.521994,       +2.916030,   99047.05,  275561.90,    9877.91,            10223.79,   -68.09,  62960.77,           61118.07,   -112.82,    -29.30,          87.25,  +0.91,  -1.29
  5,     UK000C,       0,  0.200752, 2459439.518217287026,  50.68902,  19.96559,               82.26629,  19.63790,        82.29840,       19.66117,     50.68902,     +19.96559,      50.64911,      +19.96313,  3535994.88, -1950038.79,  5045408.88,      51.512999,       +2.897797,   97235.90,  273613.61,   12313.84,            12659.72,   -93.15,  60655.62,           60840.39,   -176.38,    -45.73,         137.36,  +1.08,  -1.11
  6,     UK000C,       0,  0.240916, 2459439.518217751756,  50.70431,  19.62756,               82.49120,  19.37422,        82.51768,       19.39340,     50.70431,     +19.62756,      50.67171,      +19.62554,  3535013.43, -1951074.40,  5043185.73,      51.503236,       +2.878035,   95272.27,  271510.75,   14955.46,            15301.35,    87.89,  65770.93,           61269.72,   -144.45,    -37.48,         113.37,  +0.77,  -1.40
  0,     UK002C,       0,  0.008894, 2459439.518214986194,  50.71427,  15.96994,               84.20229,  15.93881,        84.23088,       15.95941,     50.71427,     +15.96994,      50.67838,      +15.96790,  3540304.56, -1945491.26,  5055171.08,      51.555762,       +2.984626,  105863.99,  352385.48,       0.00,             1059.99,    59.24,      0.00,           62516.98,   -204.14,    -54.25,         123.64,  +3.61,  +0.87
  1,     UK002C,       0,  0.049062, 2459439.518215451390,  50.69905,  15.73106,               84.37433,  15.76593,        84.37933,       15.76953,     50.69905,     +15.73106,      50.69275,      +15.73071,  3539486.58, -1946354.38,  5053318.21,      51.547659,       +2.968141,  104225.69,  350727.30,    2201.63,             3261.62,  -189.96,  54810.57,           62516.98,    -35.54,     -9.47,          21.63,  +1.94,  -0.78
  2,     UK002C,       0,  0.089298, 2459439.518215917051,  50.72261,  15.41772,               84.56630,  15.51192,        84.57510,       15.51826,     50.72261,     +15.41772,      50.71176,      +15.41710,  3538417.30, -1947482.67,  5050896.11,      51.537058,       +2.946639,  102084.56,  348572.32,    5079.65,             6139.64,   209.37,  71528.43,           62516.98,    -62.21,    -16.57,          38.09,  +1.38,  -1.33
  3,     UK002C,       0,  0.129486, 2459439.518216382246,  50.73036,  15.15971,               84.73290,  15.30985,        84.73559,       15.31179,     50.73036,     +15.15971,      50.72729,      +15.15952,  3537548.51, -1948399.41,  5048928.13,      51.528436,       +2.929134,  100345.28,  346827.08,    7418.06,             8478.05,    89.20,  58186.76,           62516.98,    -18.92,     -5.04,          11.65,  +1.60,  -1.10
  4,     UK002C,       0,  0.169670, 2459439.518216846976,  50.74014,  14.91270,               84.89028,  15.11480,        84.88903,       15.11391,     50.74014,     +14.91270,      50.74212,      +14.91278,  3536724.30, -1949269.11,  5047061.16,      51.520249,       +2.912516,   98695.59,  345177.41,    9636.45,            10696.45,  -147.59,  55205.93,           60923.00,      8.72,      2.33,           5.39,  +1.32,  -1.37
  5,     UK002C,       0,  0.209890, 2459439.518217312638,  50.77916,  14.62923,               85.04918,  14.87353,        85.06571,       14.88541,     50.77916,     +14.62923,      50.75922,      +14.62806,  3535783.11, -1950262.24,  5044929.19,      51.510893,       +2.893560,   96812.16,  343303.10,   12169.72,            13229.71,   -83.99,  62985.17,           60762.21,   -115.28,    -30.68,          71.68,  +1.29,  -1.39
  6,     UK002C,       0,  0.250102, 2459439.518217778299,  50.79368,  14.34761,               85.22523,  14.64874,        85.24002,       14.65937,     50.79368,     +14.34761,      50.77608,      +14.34656,  3534862.52, -1951233.64,  5042843.89,      51.501734,       +2.875013,   94970.36,  341477.87,   14647.54,            15707.53,   -67.50,  61618.98,           60796.62,   -102.66,    -27.33,          64.17,  +1.20,  -1.47
  7,     UK002C,       0,  0.290310, 2459439.518218243495,  50.76794,  14.04025,               85.44887,  14.42913,        85.42838,       14.41439,     50.76794,     +14.04025,      50.79431,      +14.04168,  3533876.53, -1952274.04,  5040610.45,      51.491915,       +2.855156,   92998.20,  339533.08,   17301.37,            18361.37,   131.24,  66002.65,           61244.88,    141.47,     37.82,          88.96,  +1.57,  -1.08
  0,     UK002F,       0,  0.066491, 2459439.518215630203,  41.52050,  10.48430,               95.60906,  17.71814,        95.60214,       17.71212,     41.52050,     +10.48430,      41.52955,      +10.48372,  3539158.90, -1946700.14,  5052575.97,      51.544412,       +2.961539,  103569.49,  317056.64,       0.00,             4143.58,  -288.50,      0.00,           64765.72,     43.78,     22.86,          32.13,  +2.09,  -0.42
  1,     UK002F,       0,  0.106655, 2459439.518216094933,  41.51244,  10.09591,               95.86986,  17.41966,        95.87679,       17.42567,     41.51244,     +10.09591,      41.50354,      +10.09648,  3538073.61, -1947845.33,  5050117.58,      51.533648,       +2.939716,  101396.46,  315060.09,    2921.13,             7064.71,   141.32,  72730.01,           64765.72,    -43.59,    -22.73,          32.19,  +1.45,  -1.04
  2,     UK002F,       0,  0.146779, 2459439.518216559663,  41.47535,   9.75896,               96.11973,  17.17892,        96.11580,       17.17551,     41.47535,      +9.75896,      41.48082,       +9.75863,  3537137.67, -1948832.92,  5047997.51,      51.524356,       +2.920870,   99522.93,  313348.53,    5440.26,             9583.84,   186.47,  62783.61,           64765.72,     24.60,     12.84,          18.26,  +1.35,  -1.13
  3,     UK002F,       0,  0.186895, 2459439.518217023928,  41.44108,   9.43661,               96.35724,  16.94762,        96.34382,       16.93600,     41.44108,      +9.43661,      41.45910,       +9.43549,  3536251.87, -1949767.62,  5045991.00,      51.515554,       +2.903022,   97750.14,  311738.25,    7824.45,            11968.03,   101.18,  59432.41,           64765.72,     83.50,     43.62,          62.33,  +1.21,  -1.26
  4,     UK002F,       0,  0.226999, 2459439.518217487726,  41.38809,   9.10588,               96.61477,  16.72100,        96.57797,       16.68914,     41.38809,      +9.10588,      41.43679,       +9.10279,  3535349.33, -1950719.96,  5043946.61,      51.506578,       +2.884837,   95944.27,  310108.13,   10253.66,            14397.24,    63.96,  60572.82,           63328.46,    227.87,    119.23,         171.06,  +1.12,  -1.34
  5,     UK002F,       0,  0.267111, 2459439.518217951991,  41.35775,   8.79552,               96.84029,  16.49624,        96.79632,       16.45820,     41.35775,      +8.79552,      41.41593,       +8.79183,  3534514.16, -1951601.23,  5042054.78,      51.498266,       +2.867994,   94273.51,  308608.27,   12501.58,            16645.17,  -152.57,  56041.18,           61876.94,    270.98,    141.86,         204.43,  +1.11,  -1.34
  6,     UK002F,       0,  0.307271, 2459439.518218417186,  41.36004,   8.43342,               97.07230,  16.21065,        97.04863,       16.19021,     41.36004,      +8.43342,      41.39188,       +8.43144,  3533556.38, -1952611.86,  5039885.25,      51.488724,       +2.848700,   92357.92,  306901.20,   15079.49,            19223.07,   -51.86,  64190.85,           61606.50,    145.11,     75.86,         110.05,  +2.49,  +0.06
  0,     UK0032,       0,  0.010158, 2459439.518214995041,  16.94433,  -2.93321,              126.55551,  20.83218,       126.55752,       20.83414,     16.94433,      -2.93321,      16.94150,       -2.93241,  3540262.64, -1945535.49,  5055076.13,      51.555347,       +2.983787,  105780.03,  282310.32,       0.00,             1172.81,   123.98,      0.00,           59280.88,     -7.90,    -10.78,           9.76,  +2.94,  +0.69
  1,     UK0032,       0,  0.050290, 2459439.518215459771,  16.79827,  -3.37892,              126.92216,  20.51242,       126.91948,       20.50983,     16.79827,      -3.37892,      16.80166,       -3.37998,  3539318.69, -1946531.53,  5052937.92,      51.545996,       +2.964789,  103889.48,  281229.00,    2540.69,             3713.50,   176.43,  63308.24,           59280.88,     10.47,     14.28,          12.99,  +1.41,  -0.84
  2,     UK0032,       0,  0.090406, 2459439.518215924036,  16.66404,  -3.78534,              127.25603,  20.22061,       127.24853,       20.21335,     16.66404,      -3.78534,      16.67383,       -3.78832,  3538463.72, -1947433.69,  5051001.25,      51.537518,       +2.947563,  102177.49,  280265.18,    4841.90,             6014.71,    -5.15,  57363.97,           59280.88,     29.21,     39.88,          36.38,  +0.96,  -1.28
  3,     UK0032,       0,  0.130550, 2459439.518216388300,  16.55711,  -4.20708,              127.57092,  19.90161,       127.58135,       19.91169,     16.55711,      -4.20708,      16.54391,       -4.20293,  3537601.51, -1948343.49,  5049048.19,      51.528962,       +2.930189,  100451.37,  279309.20,    7162.58,             8335.39,  -168.15,  57808.87,           59280.88,    -40.53,    -55.27,          50.62,  +0.97,  -1.26
  4,     UK0032,       0,  0.170674, 2459439.518216853030,  16.40526,  -4.65689,              127.94040,  19.57865,       127.94328,       19.58143,     16.40526,      -4.65689,      16.40198,       -4.65574,  3536666.40, -1949330.20,  5046930.00,      51.519674,       +2.911358,   98579.71,  278291.36,    9679.48,            10852.29,  -134.73,  62727.97,           59759.08,    -11.15,    -15.21,          13.98,  +1.03,  -1.19
  5,     UK0032,       0,  0.210810, 2459439.518217317294,  16.26792,  -5.10761,              128.29522,  19.24717,       128.30114,       19.25286,     16.26792,      -5.10761,      16.26088,       -5.10525,  3535744.72, -1950302.76,  5044842.22,      51.510511,       +2.892792,   96735.34,  277306.83,   12160.24,            13333.05,  -136.43,  61808.95,           60188.60,    -22.82,    -31.14,          28.72,  +0.75,  -1.46
  6,     UK0032,       0,  0.250930, 2459439.518217782024,  16.11930,  -5.53952,              128.64953,  18.93677,       128.64654,       18.93390,     16.11930,      -5.53952,      16.12393,       -5.54071,  3534857.93, -1951238.49,  5042833.48,      51.501688,       +2.874920,   94961.18,  276377.05,   14547.08,            15719.89,  -228.69,  59492.45,           60267.42,     11.46,     15.64,          14.47,  +0.67,  -1.54
  7,     UK0032,       0,  0.291086, 2459439.518218246754,  15.97173,  -6.05104,              129.04085,  18.55482,       129.04738,       18.56106,     15.97173,      -6.05104,      15.96423,       -6.04843,  3533831.25, -1952321.83,  5040507.87,      51.491463,       +2.854251,   92907.64,  275323.97,   17310.44,            18483.25,    50.76,  68815.61,           61013.12,    -24.98,    -34.09,          31.66,  +1.45,  -0.75
  8,     UK0032,       0,  0.331226, 2459439.518218711019,  15.80327,  -6.55814,              129.44731,  18.18551,       129.44788,       18.18605,     15.80327,      -6.55814,      15.80365,       -6.55791,  3532808.67, -1953400.84,  5038191.54,      51.481269,       +2.833660,   90862.80,  274298.83,   20062.77,            21235.59,   322.00,  68568.41,           61864.88,     -2.17,     -2.97,           2.76,  +2.68,  +0.49

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.