Orbital Analysis for matched events on 20210816_220552.983_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 66.88° Bg 37.33° Vg 58.73km/s
mass 0.17357g, abs. mag -1.7
Path Details
------------
start 0.26° 52.74° 115.04km
end   0.01° 52.51° 95.07km

Orbit Details
-------------
Semimajor axis 7.24A.U., eccentricity 0.87, inclination 114.33°, Period 19.48Y, LA Sun 143.96°, last Perihelion 2021-07-25

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: 2459443.420752122533
Time: 2021-08-16 22:05:53.063250 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002F and UK002K
 Convergence angle = 22.51781 deg
 R.A. =  53.01702  Dec = +58.27760 deg

Best intersection: Stations UK002F and UK002K with Qconv = 22.52 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   1805709.78 +/- 269.03 m
 Y =  -3499767.81 +/- 154.87 m
 Z =   5149860.58 +/- 489.56 m
 Vx =    18502.66 +/- 386.60 m/s
 Vy =    25249.85 +/- 489.85 m/s
 Vz =    50909.27 +/- 608.89 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+6.281163e+04, +2.551205e+04, +1.110189e+05, +6.039740e+04, +1.044371e+04, +9.137053e+04
+2.551205e+04, +2.179552e+04, +5.565408e+04, +2.052307e+04, +5.362088e+03, +3.018041e+04
+1.110189e+05, +5.565408e+04, +2.060701e+05, +1.025958e+05, +1.946243e+04, +1.546529e+05
+6.039740e+04, +2.052307e+04, +1.025958e+05, +1.011637e+05, +2.449542e+04, +1.597803e+05
+1.044371e+04, +5.362088e+03, +1.946243e+04, +2.449542e+04, +1.148701e+04, +4.454722e+04
+9.137053e+04, +3.018041e+04, +1.546529e+05, +1.597803e+05, +4.454722e+04, +2.598394e+05

Timing offsets (from input data):
    UK002F: 0.000000 s
    UK002K: 0.004465 s

Reference point on the trajectory:
  Time: 2021-08-16 22:05:53.063250 UTC
  Lon     = ++0.305896 +/- 0.0043 deg
  Lat     = +52.776704 +/- 0.0027 deg
  Lat geo = +52.594550 +/- 0.0027 deg
  Ht      =  118392.04 +/- 396.38 m

  JD dynamic   = 2459443.421553787775 
  LST apparent = 297.2915307768 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  53.76667 +/- 0.4879 deg
  Dec       = +58.41322 +/- 0.0695 deg
  Azimuth   =  33.76711 +/- 0.1835 deg
  Elevation = +32.48352 +/- 0.2185 deg
  Vavg      =  59.03645 +/- 0.4837 km/s
  Vinit     =  59.76334 +/- 0.6702 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  53.53425 +/- 0.4879 deg
  Dec       = +58.20355 +/- 0.0695 deg
  Azimuth   =  34.03758 +/- 0.1835 deg
  Elevation = +32.40124 +/- 0.2185 deg
  Vavg      =  59.17163 +/- 0.4837 km/s
  Vinit     =  59.89852 +/- 0.6702 km/s
Radiant (geocentric, J2000):
  R.A.   =  54.00432 +/- 0.4987 deg
  Dec    = +57.91814 +/- 0.0811 deg
  Vg     =  58.72557 +/- 0.6819 km/s
  Vinf   =  59.76334 +/- 0.6702 km/s
  Zc     =  57.66796 +/- 0.2188 deg
  Zg     =  58.22048 +/- 0.2328 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  66.88385 +/- 0.2889 deg
  Bg     = +37.33414 +/- 0.1548 deg
  Vh     =  40.37119 +/- 0.6397 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  86.08096 +/- 1.0662 deg
  Bh     = +61.90726 +/- 0.1224 deg
  Vh_x   =  -1.29933 +/- 0.3887 km/s
  Vh_y   = -18.96634 +/- 0.3280 km/s
  Vh_z   = -35.61492 +/- 0.5371 km/s
Orbit:
  La Sun = 143.955134 +/- 0.0000 deg
  a      =   7.240211 +/- 517.0413 AU
  e      =   0.869583 +/- 0.0557
  i      = 114.325199 +/- 0.3186 deg
  peri   = 148.764658 +/- 1.8114 deg
  node   = 143.953474 +/- 0.0000 deg
  Pi     = 292.718132 +/- 1.8114 deg
  q      =   0.944248 +/- 0.0056 AU
  f      =  31.231207 +/- 1.8114 deg
  M      =   1.127772 +/- nan deg
  Q      =  13.536173 +/- 1034.0806 AU
  n      =   0.050592 +/- 0.0235 deg/day
  T      =  19.481726 +/- 249442123.1438 years
  Last perihelion JD = 2459421.129801 (2021-07-25 15:06:54.814648) +/- 1.3595 days
  Tj     =   0.238986 +/- 0.3223
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +2.175099e-03, +2.119085e-04, +5.730846e-02, -1.832760e-08, +1.211584e-03, +2.307848e-04
q   , +2.119085e-04, +2.186022e-05, +5.770029e-03, -1.748414e-09, +1.230732e-04, +2.202487e-05
Tp  , +5.730846e-02, +5.770029e-03, +1.539094e+00, -4.778496e-07, +3.270191e-02, +6.018705e-03
node, -1.832760e-08, -1.748414e-09, -4.778496e-07, +1.580612e-13, -1.006360e-08, -1.990581e-09
peri, +1.211584e-03, +1.230732e-04, +3.270191e-02, -1.006360e-08, +6.958197e-04, +1.267608e-04
i   , +2.307848e-04, +2.202487e-05, +6.018705e-03, -1.990581e-09, +1.267608e-04, +2.506918e-05

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: UK002F
  Avg. res. = 8.344e-06 s
  Stddev    = 2.89e-03 s

Begin point on the trajectory:
  Lon =     0.263347 +/- 0.0041 deg
  Lat =    52.738073 +/- 0.0024 deg
  Ht  = 115042.87 +/- 384.14 m
End point on the trajectory:
  Lon =     0.006460 +/- 0.0025 deg
  Lat =    52.505504 +/- 0.0013 deg
  Ht  = 95068.24 +/- 241.61 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
    UK002F,   False,    -1.306160,    51.883100,   80.00,   0.000000,  39.896548,   115042.87,    95068.24,          0.036662,    104.05,      3.19,              13.24, 1.0000,    True,    True, {"ff_name": "FF_UK002F_20210816_220544_888_0180736.fits"}
    UK002K,   False,    -0.382860,    53.537770,   34.00,   0.000000,   0.000000,   113758.35,    98362.82,          0.005090,     12.21,      5.61,              80.04, 1.0000,    True,   False, {"ff_name": "FF_UK002K_20210816_220547_621_0179200.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,     UK002F,       1,  0.000000, 2459443.420752122533,  30.18147,  54.32536,               47.24864,  37.65128,        47.23495,       37.67561,     30.18147,     +54.32536,      30.16072,      +54.34909,  1805690.60, -3499793.97,  5149807.82,      52.776321,       +0.305808,  118358.78,  190654.03,       0.00,               61.93,  -701.37,      0.00,           62937.51,      2.53,    -88.59,          95.89,  +5.64,  +4.24
  1,     UK002F,       1,  0.039900, 2459443.420752584469,  29.76534,  54.23249,               47.53290,  37.78200,        47.53227,       37.78312,     29.76534,     +54.23249,      29.76454,      +54.23359,  1804572.92, -3501319.23,  5146732.58,      52.753977,       +0.281021,  116420.64,  187140.47,    3610.09,             3672.02,   524.17,  90478.44,           62937.51,      0.12,     -4.01,           4.42,  +4.24,  +2.88
  2,     UK002F,       0,  0.079868, 2459443.420753046870,  29.50043,  54.11997,               47.76686,  37.83235,        47.75033,       37.86210,     29.50043,     +54.11997,      29.47510,      +54.14876,  1803777.90, -3502404.16,  5144545.11,      52.738073,       +0.263347,  115042.87,  184641.67,    6177.99,             6239.93,   703.45,  64249.01,           62937.51,      2.99,   -104.65,         116.95,  +4.50,  +3.17
  3,     UK002F,       0,  0.119852, 2459443.420753509738,  29.36109,  54.05871,               47.89212,  37.85776,        47.86600,       37.90508,     29.36109,     +54.05871,      29.32061,      +54.10439,  1803360.41, -3502973.90,  5143396.39,      52.729717,       +0.253989,  114319.62,  183327.06,    7526.50,             7588.43,  -337.62,  33726.15,           62937.51,      4.52,   -165.11,         185.84,  +4.13,  +2.81
  4,     UK002F,       0,  0.159756, 2459443.420753971674,  29.01303,  53.99686,               48.11521,  37.97881,        48.10812,       37.99162,     29.01303,     +53.99686,      29.00258,      +54.00922,  1802517.60, -3504124.04,  5141077.45,      52.712841,       +0.235272,  112860.20,  180681.91,   10248.75,            10310.69,    -0.17,  68220.01,           61114.00,      1.33,    -44.06,          50.32,  +1.94,  +0.66
  5,     UK002F,       0,  0.199688, 2459443.420754433610,  28.71235,  53.91937,               48.33205,  38.06895,        48.33095,       38.07094,     28.71235,     +53.91937,      28.71145,      +53.92128,  1801763.74, -3505152.80,  5139003.24,      52.697737,       +0.218519,  111555.48,  178317.30,   12683.70,            12745.63,    48.31,  60977.33,           60573.27,      0.21,     -6.74,           7.80,  +1.63,  +0.37
  6,     UK002F,       0,  0.239624, 2459443.420754896011,  28.41979,  53.84196,               48.54533,  38.15598,        48.54955,       38.14831,     28.41979,     +53.84196,      28.42749,      +53.83460,  1801044.20, -3506134.73,  5137023.45,      52.683313,       +0.202524,  110310.74,  176061.92,   15007.81,            15069.75,   -14.28,  58196.00,           60125.44,     -0.82,     25.66,          30.08,  +1.34,  +0.11
  7,     UK002F,       0,  0.279548, 2459443.420755357947,  28.07735,  53.74480,               48.80191,  38.25449,        48.81020,       38.23937,     28.07735,     +53.74480,      28.09178,      +53.73032,  1800213.07, -3507268.95,  5134736.62,      52.666642,       +0.184081,  108873.69,  173460.27,   17692.37,            17754.30,   284.28,  67241.65,           60531.55,     -1.64,     49.81,          59.26,  +1.08,  -0.12
  8,     UK002F,       0,  0.319532, 2459443.420755820815,  27.86620,  53.63110,               49.01422,  38.28237,        49.00120,       38.30643,     27.86620,     +53.63110,      27.84629,      +53.65401,  1799617.96, -3508081.07,  5133099.20,      52.654699,       +0.170831,  107845.18,  171597.13,   19614.57,            19676.50,  -183.10,  48074.15,           59889.63,      2.36,    -78.25,          94.10,  +1.03,  -0.14
  9,     UK002F,       0,  0.359400, 2459443.420756282285,  27.47964,  53.59968,               49.22627,  38.44338,        49.25351,       38.39350,     27.47964,     +53.59968,      27.52514,      +53.55212,  1798855.43, -3509121.66,  5131001.14,      52.639388,       +0.153905,  106527.93,  169213.90,   22077.52,            22139.46,  -102.79,  61777.74,           59665.73,     -5.71,    160.15,         195.34,  +0.87,  -0.27
 10,     UK002F,       0,  0.399380, 2459443.420756745152,  27.18215,  53.43646,               49.52960,  38.48227,        49.52711,       38.48692,     27.18215,     +53.43646,      27.17968,      +53.44086,  1798054.55, -3510214.59,  5128797.56,      52.623299,       +0.136141,  105145.16,  166713.82,   24664.34,            24726.27,    94.69,  64702.70,           59772.77,      0.47,    -14.65,          18.14,  +0.83,  -0.28
 11,     UK002F,       0,  0.439304, 2459443.420757207088,  26.86954,  53.35456,               49.75864,  38.57898,        49.76463,       38.56778,     26.86954,     +53.35456,      26.88136,      +53.34399,  1797378.42, -3511137.28,  5126937.22,      52.609708,       +0.121123,  103978.29,  164604.28,   26848.23,            26910.17,  -107.41,  54701.34,           59639.53,     -1.16,     34.85,          43.69,  +0.71,  -0.37
 12,     UK002F,       0,  0.479232, 2459443.420757669024,  26.52046,  53.23989,               50.03833,  38.67349,        50.04455,       38.66179,     26.52046,     +53.23989,      26.53294,      +53.22888,  1796606.34, -3512190.90,  5124812.88,      52.594180,       +0.104002,  102646.50,  162198.96,   29342.04,            29403.97,     0.16,  62457.50,           59651.87,     -1.20,     35.83,          45.59,  +0.68,  -0.37
 13,     UK002F,       0,  0.519228, 2459443.420758131891,  26.25523,  53.05763,               50.34768,  38.68767,        50.31435,       38.75175,     26.25523,     +53.05763,      26.19948,      +53.11740,  1795884.46, -3513176.02,  5122826.66,      52.579653,       +0.087987,  101401.89,  159952.15,   31673.69,            31735.63,   -58.47,  58297.29,           59620.87,      5.49,   -192.99,         248.96,  +0.23,  -0.79
 14,     UK002F,       0,  0.559056, 2459443.420758592896,  25.75696,  53.00999,               50.63082,  38.89587,        50.64891,       38.86149,     25.75696,     +53.00999,      25.79034,      +52.97787,  1795020.67, -3514354.80,  5120449.98,      52.562261,       +0.068864,   99913.42,  157268.51,   34463.72,            34525.66,   351.31,  70051.98,           59860.74,     -3.59,    101.91,         133.75,  +0.57,  -0.41
 15,     UK002F,       0,  0.599056, 2459443.420759056229,  25.50600,  52.83451,               50.92807,  38.90902,        50.90870,       38.94662,     25.50600,     +52.83451,      25.47429,      +52.86936,  1794369.33, -3515243.66,  5118657.83,      52.549139,       +0.054406,   98791.54,  155245.74,   36567.55,            36629.49,    64.60,  52595.72,           59860.78,      3.36,   -109.71,         145.83,  +0.91,  -0.05
 16,     UK002F,       0,  0.638964, 2459443.420759518165,  25.13371,  52.72604,               51.21494,  39.02183,        51.20447,       39.04224,     25.13371,     +52.72604,      25.11775,      +52.74490,  1793650.55, -3516224.56,  5116680.13,      52.534651,       +0.038473,   97554.07,  153016.98,   38889.22,            38951.16,     1.24,  58175.55,           59827.79,      1.88,    -58.64,          79.08,  +1.05,  +0.13
 17,     UK002F,       0,  0.678912, 2459443.420759980101,  24.79911,  52.57454,               51.52864,  39.09125,        51.50478,       39.13836,     24.79911,     +52.57454,      24.75873,      +52.61782,  1792943.28, -3517189.74,  5114734.11,      52.520388,       +0.022798,   96336.99,  150826.71,   41173.69,            41235.62,  -101.72,  57186.04,           59758.27,      4.06,   -133.19,         182.23,  +1.31,  +0.42
 18,     UK002F,       0,  0.718840, 2459443.420760442503,  24.42514,  52.42756,               51.85720,  39.18336,        51.82847,       39.24066,     24.42514,     +52.42756,      24.37534,      +52.47994,  1792205.63, -3518196.39,  5112704.49,      52.505504,       +0.006460,   95068.24,  148545.84,   43556.30,            43618.23,  -105.35,  59672.58,           59707.16,      4.79,   -159.30,         221.30,  +2.10,  +1.24
 19,     UK002F,       1,  0.758760, 2459443.420760904439,  24.10293,  52.33544,               52.10542,  39.28437,        52.08654,       39.32213,     24.10293,     +52.33544,      24.07123,      +52.36988,  1791633.06, -3518977.74,  5111129.10,      52.493945,       -0.006255,   94083.79,  146776.17,   45405.67,            45467.60,  -641.73,  46326.95,           59478.87,      3.27,   -103.68,         145.77,  +6.01,  +5.18
  0,     UK002K,       1,  0.090413, 2459443.420753109735, 314.17781,  14.59951,              153.73500,  48.67517,       153.71580,       48.66149,    314.17781,     +14.59951,     314.19462,      +14.58979,  1803860.76, -3502291.09,  5144773.08,      52.739731,       +0.265149,  115186.41,  152330.19,       0.00,             5972.31,  -194.39,      0.00,           60548.84,    -20.69,     45.08,          67.16,  +2.90,  +1.99
  1,     UK002K,       0,  0.130725, 2459443.420753576327, 313.65821,  13.73882,              154.80987,  47.97955,       154.81216,       47.98115,    313.65821,     +13.73882,     313.65678,      +13.73997,  1803036.33, -3503416.16,  5142504.70,      52.723229,       +0.246831,  113758.35,  152002.97,    2662.89,             8635.21,    59.32,  66057.07,           60548.84,      2.46,     -5.36,           8.00,  +2.33,  +1.42
  2,     UK002K,       0,  0.170989, 2459443.420754042454, 313.17597,  12.97628,              155.77268,  47.36207,       155.77244,       47.36191,    313.17597,     +12.97628,     313.17686,      +12.97616,  1802299.08, -3504422.24,  5140476.21,      52.708464,       +0.230438,  112481.95,  151749.15,    5044.18,            11016.49,    34.30,  59141.77,           60548.84,     -0.25,      0.54,           0.81,  +1.34,  +0.43
  3,     UK002K,       0,  0.211245, 2459443.420754508581, 312.71322,  12.23967,              156.68077,  46.75885,       156.67804,       46.75698,    312.71322,     +12.23967,     312.71640,      +12.23830,  1801589.84, -3505390.12,  5138524.75,      52.694251,       +0.214666,  111254.59,  151539.92,    7335.03,            13307.35,   -80.68,  56907.15,           60548.84,     -2.92,      6.36,           9.53,  +0.39,  -0.51
  4,     UK002K,       0,  0.251509, 2459443.420754974242, 312.26238,  11.50046,              157.55639,  46.14472,       157.56023,       46.14733,    312.26238,     +11.50046,     312.26015,      +11.50238,  1800884.97, -3506352.03,  5136585.34,      52.680120,       +0.198994,  110035.36,  151366.18,    9611.74,            15584.06,  -210.28,  56544.58,           59337.24,      4.10,     -8.94,          13.41,  +0.04,  -0.86
  5,     UK002K,       0,  0.291801, 2459443.420755440835, 311.75857,  10.68548,              158.51200,  45.46291,       158.51404,       45.46427,    311.75857,     +10.68548,     311.75804,      +10.68649,  1800106.00, -3507415.06,  5134442.02,      52.664493,       +0.181697,  108688.60,  151214.29,   12127.82,            18100.13,  -102.19,  62446.09,           59435.29,      2.17,     -4.72,           7.09,  -0.22,  -1.12
  6,     UK002K,       0,  0.332073, 2459443.420755906962, 311.27381,   9.90891,              159.41075,  44.80824,       159.40456,       44.80414,    311.27381,      +9.90891,     311.28041,       +9.90584,  1799362.64, -3508429.49,  5132396.71,      52.649573,       +0.165188,  107404.06,  151108.30,   14528.85,            20501.16,  -107.95,  59620.31,           59490.13,     -6.61,     14.40,          21.63,  -0.41,  -1.31
  7,     UK002K,       0,  0.372369, 2459443.420756373089, 310.76105,   9.07649,              160.34559,  44.09873,       160.33372,       44.09095,    310.76105,      +9.07649,     310.77263,       +9.07060,  1798568.96, -3509512.60,  5130212.93,      52.633634,       +0.147577,  106033.24,  151037.56,   17092.43,            23064.74,    47.41,  63618.72,           59857.24,    -12.70,     27.65,          41.55,  -0.38,  -1.28
  8,     UK002K,       0,  0.412665, 2459443.420756839681, 310.28995,   8.28064,              161.19573,  43.41083,       161.19308,       43.40910,    310.28995,      +8.28064,     310.29391,       +8.27932,  1797818.13, -3510537.23,  5128147.05,      52.618547,       +0.130913,  104737.08,  151010.67,   19517.61,            25489.93,    64.37,  60184.19,           60050.35,     -2.85,      6.20,           9.32,  -0.44,  -1.34
  9,     UK002K,       0,  0.452965, 2459443.420757306274, 309.79980,   7.46455,              162.05944,  42.70127,       162.05788,       42.70026,    309.79980,      +7.46455,     309.80299,       +7.46378,  1797044.91, -3511592.41,  5126019.57,      52.603001,       +0.113763,  103402.93,  151023.94,   22015.10,            27987.41,   153.39,  61972.39,           60253.55,     -1.67,      3.64,           5.48,  -0.53,  -1.43
 10,     UK002K,       0,  0.493257, 2459443.420757772401, 309.31424,   6.66306,              162.89632,  41.99978,       162.89043,       41.99602,    309.31424,      +6.66306,     309.32129,       +6.66013,  1796283.13, -3512631.98,  5123923.57,      52.587677,       +0.096868,  102089.18,  151077.51,   24475.63,            30447.94,   205.94,  61067.49,           60401.38,     -6.36,     13.84,          20.79,  -0.59,  -1.49
 11,     UK002K,       0,  0.533541, 2459443.420758238528, 308.86513,   5.90712,              163.65909,  41.33191,       163.65557,       41.32969,    308.86513,      +5.90712,     308.87033,       +5.90537,  1795567.42, -3513608.68,  5121954.33,      52.573271,       +0.080990,  100855.47,  151164.31,   26787.36,            32759.67,   110.16,  57385.72,           60370.65,     -3.81,      8.29,          12.44,  -0.59,  -1.49
 12,     UK002K,       0,  0.573833, 2459443.420758705121, 308.40366,   5.12686,              164.42896,  40.63762,       164.42828,       40.63719,    308.40366,      +5.12686,     308.40662,       +5.12653,  1794828.19, -3514617.48,  5119920.36,      52.558384,       +0.064600,   99581.81,  151291.25,   29175.07,            35147.39,    89.89,  59260.33,           60315.46,     -0.74,      1.60,           2.41,  -0.45,  -1.35
 13,     UK002K,       0,  0.614121, 2459443.420759171247, 307.96966,   4.37725,              165.14290,  39.96492,       165.15213,       39.97067,    307.96966,      +4.37725,     307.96432,       +4.38185,  1794120.35, -3515583.44,  5117972.78,      52.544122,       +0.048903,   98362.82,  151448.02,   31461.37,            37433.69,   -31.56,  56748.91,           60178.86,     10.05,    -21.89,          32.81,  -0.17,  -1.07

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.