Orbital Analysis for matched events on 20210816_212825.707_UK

Summary for Event
-----------------
shower ID -1 spo
Lg 190.11° Bg 30.60° Vg 8.42km/s
mass 0.03638g, abs. mag 1.9
Path Details
------------
start -2.53° 50.70° 80.08km
end   -2.44° 50.69° 75.07km

Orbit Details
-------------
Semimajor axis 1.73A.U., eccentricity 0.43, inclination 7.05°, Period 2.28Y, LA Sun 143.93°, last Perihelion 2021-07-26

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: 2459443.394741984084
Time: 2021-08-16 21:28:25.707425 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000H and UK0038
 Convergence angle = 10.02677 deg
 R.A. = 219.31604  Dec = +34.58093 deg
Intersection 2 - Stations: UK000H and UK003J
 Convergence angle = 9.77577 deg
 R.A. = 215.13790  Dec = +34.53695 deg
Intersection 3 - Stations: UK0038 and UK003J
 Convergence angle = 0.64258 deg
 R.A. = 103.22578  Dec =  -5.78956 deg

Best intersection: Stations UK000H and UK0038 with Qconv = 10.03 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   1065628.92 +/- 176.69 m
 Y =  -3957582.00 +/- 381.81 m
 Z =   4974588.75 +/- 247.81 m
 Vx =    -9639.31 +/- 49.37 m/s
 Vy =    -6444.12 +/- 283.55 m/s
 Vz =     7751.42 +/- 228.38 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+2.473564e+04, +5.065792e+04, -3.326986e+04, -3.610373e+03, +5.730471e+04, -2.085055e+04
+5.065792e+04, +1.084026e+05, -6.988470e+04, -7.718491e+03, +1.232511e+05, -4.516231e+04
-3.326986e+04, -6.988470e+04, +4.580971e+04, +5.099425e+03, -7.919735e+04, +2.981100e+04
-3.610373e+03, -7.718491e+03, +5.099425e+03, +9.281035e+03, -1.809150e+04, +2.906581e+03
+5.730471e+04, +1.232511e+05, -7.919735e+04, -1.809150e+04, +1.951381e+05, -6.470200e+04
-2.085055e+04, -4.516231e+04, +2.981100e+04, +2.906581e+03, -6.470200e+04, +2.542561e+04

Timing offsets (from input data):
    UK000H: 0.000000 s
    UK0038: -0.034691 s
    UK003J: -0.034479 s

Reference point on the trajectory:
  Time: 2021-08-16 21:28:25.707425 UTC
  Lon     = +-2.525824 +/- 0.0038 deg
  Lat     = +50.701464 +/- 0.0009 deg
  Lat geo = +50.515061 +/- 0.0008 deg
  Ht      =   80083.79 +/- 395.88 m

  JD dynamic   = 2459443.395542724989 
  LST apparent = 285.0701899601 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 213.76372 +/- 2.5586 deg
  Dec       = +33.76337 +/- 0.2194 deg
  Azimuth   = 280.48975 +/- 1.6714 deg
  Elevation = +36.78690 +/- 1.6466 deg
  Vavg      =  13.71126 +/- 0.4085 km/s
  Vinit     =  13.94731 +/- 0.3312 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 214.24890 +/- 2.5586 deg
  Dec       = +34.41983 +/- 0.2194 deg
  Azimuth   = 280.77640 +/- 1.6714 deg
  Elevation = +37.52187 +/- 1.6466 deg
  Vavg      =  13.47714 +/- 0.4085 km/s
  Vinit     =  13.71319 +/- 0.3312 km/s
Radiant (geocentric, J2000):
  R.A.   = 201.92540 +/- 3.7651 deg
  Dec    = +24.00857 +/- 1.5404 deg
  Vg     =   8.41711 +/- 0.5730 km/s
  Vinf   =  13.94731 +/- 0.3312 km/s
  Zc     =  53.24726 +/- 1.6503 deg
  Zg     =  67.37932 +/- 3.4612 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 190.11114 +/- 2.8313 deg
  Bg     = +30.59553 +/- 2.8615 deg
  Vh     =  35.21363 +/- 0.5247 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 226.23673 +/- 0.1891 deg
  Bh     =  +6.98804 +/- 0.9209 deg
  Vh_x   =  24.17564 +/- 0.2910 km/s
  Vh_y   =  25.24250 +/- 0.3775 km/s
  Vh_z   =  -4.28416 +/- 0.6099 km/s
Orbit:
  La Sun = 143.930132 +/- -0.0000 deg
  a      =   1.731467 +/- 0.1084 AU
  e      =   0.432471 +/- 0.0381
  i      =   7.051373 +/- 0.9279 deg
  peri   = 154.442148 +/- 2.5090 deg
  node   = 143.960378 +/- 0.0056 deg
  Pi     = 298.402526 +/- 2.5035 deg
  q      =   0.982658 +/- 0.0036 AU
  f      =  25.527103 +/- 2.5036 deg
  M      =   9.304156 +/- 2.2880 deg
  Q      =   2.480276 +/- 0.2135 AU
  n      =   0.432597 +/- 0.0477 deg/day
  T      =   2.278358 +/- 0.2078 years
  Last perihelion JD = 2459421.887829 (2021-07-26 09:18:28.466609) +/- 2.3812 days
  Tj     =   4.037977 +/- 0.1997
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +8.821417e-04, +7.611945e-05, +5.264467e-02, -2.035830e-06, +9.613165e-04, +3.645204e-04
q   , +7.611945e-05, +8.523401e-06, +5.210090e-03, -1.856493e-07, +9.753996e-05, +3.351230e-05
Tp  , +5.264467e-02, +5.210090e-03, +3.374643e+00, -1.257261e-04, +6.242724e-02, +2.248215e-02
node, -2.035830e-06, -1.856493e-07, -1.257261e-04, +4.945184e-09, -2.305686e-06, -8.672696e-07
peri, +9.613165e-04, +9.753996e-05, +6.242724e-02, -2.305686e-06, +1.157640e-03, +4.130069e-04
i   , +3.645204e-04, +3.351230e-05, +2.248215e-02, -8.672696e-07, +4.130069e-04, +1.553909e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 43.940070
 a2 = -0.000000

Mean time residuals from time vs. length:
  Station with reference time: UK000H
  Avg. res. = 3.223e-06 s
  Stddev    = 1.80e-03 s

Begin point on the trajectory:
  Lon =    -2.525669 +/- 0.0037 deg
  Lat =    50.701446 +/- 0.0008 deg
  Ht  = 80075.41 +/- 395.78 m
End point on the trajectory:
  Lon =    -2.436122 +/- 0.0016 deg
  Lat =    50.690583 +/- 0.0007 deg
  Ht  = 75072.64 +/- 173.60 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
    UK000H,   False,    -1.778230,    50.857470,   24.00,  87.397921,   0.000000,    80075.41,    75072.64,          0.018857,     13.37,     27.20,              24.76, 0.1754,    True,    True, {"ff_name": "FF_UK000H_20210816_212817_294_0128512.fits"}
    UK0038,   False,    -2.379250,    51.361350,  169.00,   0.000000,   0.000000,    78398.81,    75792.03,          0.033740,     16.94,     60.97,              63.09, 0.7952,    True,    True, {"ff_name": "FF_UK0038_20210816_212825_495_0124160.fits"}
    UK003J,   False,    -2.379250,    51.361350,  169.00,   0.000641,  21.397246,    78556.80,    75284.15,          0.027620,     13.78,     49.61,              63.09, 0.7952,    True,    True, {"ff_name": "FF_UK003J_20210816_212823_407_0124160.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,     UK000H,       0,  0.000000, 2459443.394741984084, 245.85351,  31.47815,              252.06147,  54.84593,       252.06540,       54.84965,    245.85351,     +31.47815,     245.85470,      +31.48238,  1065638.59, -3957575.53,  4974580.97,      50.701446,       -2.525669,   80075.41,   97608.66,       0.00,               14.00,  -222.47,      0.00,           14453.14,     -6.65,     -3.29,          15.67,  +5.62,  +5.67
  1,     UK000H,       0,  0.039984, 2459443.394742446952, 246.03048,  31.45169,              251.84261,  54.93335,       251.83466,       54.92577,    246.03048,     +31.45169,     246.02821,      +31.44309,  1066045.24, -3957303.68,  4974253.96,      50.700685,       -2.519359,   79723.09,   97091.26,     588.39,              602.38,  -191.75,  14715.56,           14453.14,     13.45,      6.65,          31.87,  +3.40,  +3.46
  2,     UK000H,       0,  0.080004, 2459443.394742910285, 246.21007,  31.38233,              251.56773,  54.99161,       251.58451,       55.00775,    246.21007,     +31.38233,     246.21564,      +31.40058,  1066479.10, -3957013.63,  4973905.07,      50.699871,       -2.512614,   79347.20,   96539.57,    1216.16,             1230.15,  -122.15,  15686.40,           14453.14,    -28.39,    -14.00,          67.63,  +3.31,  +3.39
  3,     UK000H,       0,  0.119984, 2459443.394743372686, 246.36613,  31.36943,              251.38617,  55.07582,       251.38267,       55.07244,    246.36613,     +31.36943,     246.36553,      +31.36562,  1066825.72, -3956781.91,  4973626.34,      50.699221,       -2.507259,   79046.92,   96100.66,    1717.68,             1731.68,  -178.24,  12544.39,           14453.14,      5.91,      2.92,          14.15,  +3.13,  +3.22
  4,     UK000H,       0,  0.159984, 2459443.394743835554, 246.57396,  31.31643,              251.09960,  55.16219,       251.10086,       55.16342,    246.57396,     +31.31643,     246.57503,      +31.31781,  1067300.01, -3956464.83,  4973244.94,      50.698331,       -2.499869,   78636.07,   95498.60,    2403.94,             2417.94,   -49.87,  17156.50,           14844.17,     -2.12,     -1.05,           5.12,  +2.95,  +3.05
  5,     UK000H,       0,  0.199988, 2459443.394744298887, 246.73980,  31.26915,              250.86406,  55.22732,       250.87244,       55.23553,    246.73980,     +31.26915,     246.74333,      +31.27837,  1067679.97, -3956210.82,  4972939.40,      50.697617,       -2.493982,   78306.93,   95018.25,    2953.71,             2967.71,   -58.05,  13742.92,           14798.55,    -14.13,     -6.97,          34.19,  +2.73,  +2.84
  6,     UK000H,       0,  0.239976, 2459443.394744761754, 246.89560,  31.24176,              250.66297,  55.30054,       250.66307,       55.30063,    246.89560,     +31.24176,     246.89663,      +31.24186,  1068024.36, -3955980.58,  4972662.45,      50.696970,       -2.488661,   78008.61,   94583.99,    3452.03,             3466.02,  -117.46,  12461.56,           14531.93,     -0.16,     -0.08,           0.40,  +3.19,  +3.31
  7,     UK000H,       0,  0.279972, 2459443.394745224621, 247.09982,  31.19365,              250.38353,  55.38753,       250.38388,       55.38788,    247.09982,     +31.19365,     247.10111,      +31.19404,  1068474.82, -3955679.44,  4972300.22,      50.696123,       -2.481650,   77618.47,   94014.88,    4103.80,             4117.80,   -23.52,  16295.99,           14567.83,     -0.60,     -0.29,           1.46,  +2.22,  +2.35
  8,     UK000H,       0,  0.319972, 2459443.394745687488, 247.28546,  31.14661,              250.12455,  55.46397,       250.12734,       55.46675,    247.28546,     +31.14661,     247.28772,      +31.14971,  1068882.95, -3955406.60,  4971972.03,      50.695356,       -2.475312,   77264.99,   93500.64,    4694.33,             4708.33,     9.12,  14763.21,           14597.61,     -4.69,     -2.31,          11.52,  +2.74,  +2.89
  9,     UK000H,       0,  0.359952, 2459443.394746150356, 247.49393,  31.11681,              249.86084,  55.56615,       249.84703,       55.55229,    247.49393,     +31.11681,     247.49082,      +31.10140,  1069321.47, -3955113.44,  4971619.40,      50.694530,       -2.468490,   76885.23,   92948.52,    5328.83,             5342.82,    86.00,  15870.39,           14682.17,     23.15,     11.43,          57.28,  +1.99,  +2.15
 10,     UK000H,       0,  0.399976, 2459443.394746613223, 247.66425,  31.04124,              249.58190,  55.61240,       249.59662,       55.62733,    247.66425,     +31.04124,     247.67093,      +31.05778,  1069708.11, -3954854.96,  4971308.48,      50.693802,       -2.462493,   76550.40,   92463.20,    5888.27,             5902.27,    87.22,  13977.68,           14696.25,    -24.75,    -12.17,          61.52,  +1.83,  +2.00
 11,     UK000H,       0,  0.440000, 2459443.394747076556, 247.82406,  30.97215,              249.32177,  55.65683,       249.36095,       55.69692,    247.82406,     +30.97215,     247.83944,      +31.01643,  1070067.54, -3954614.67,  4971019.45,      50.693125,       -2.456931,   76239.13,   92013.11,    6408.33,             6422.33,    49.05,  12993.75,           14638.84,    -66.00,    -32.38,         164.79,  +2.54,  +2.72
 12,     UK000H,       0,  0.479980, 2459443.394747539423, 247.98673,  30.95117,              249.11657,  55.73761,       249.13964,       55.76132,    247.98673,     +30.95117,     247.99677,      +30.97731,  1070401.25, -3954391.57,  4970751.09,      50.692496,       -2.451778,   75950.13,   91596.21,    6891.19,             6905.19,   -25.70,  12077.54,           14519.75,    -38.79,    -19.05,          97.32,  +2.80,  +2.99
 13,     UK000H,       0,  0.519936, 2459443.394748001825, 248.13684,  30.96216,              248.96374,  55.83408,       248.94658,       55.81642,    248.13684,     +30.96216,     248.13304,      +30.94271,  1070690.00, -3954198.54,  4970518.89,      50.691951,       -2.447341,   75700.05,   91236.72,    7308.99,             7322.99,  -165.18,  10456.48,           14328.94,     28.73,     14.17,          72.42,  +3.28,  +3.48
 14,     UK000H,       0,  0.559976, 2459443.394748465158, 248.31170,  30.86770,              248.65385,  55.86827,       248.67837,       55.89380,    248.31170,     +30.86770,     248.32275,      +30.89572,  1071083.43, -3953935.52,  4970202.52,      50.691209,       -2.441235,   75359.40,   90745.41,    7878.25,             7892.25,  -154.37,  14217.24,           14202.09,    -41.23,    -20.24,         104.40,  +3.50,  +3.71
 15,     UK000H,       0,  0.599968, 2459443.394748928025, 248.47352,  30.83352,              248.43142,  55.93841,       248.45032,       55.95821,    248.47352,     +30.83352,     248.48280,      +30.85520,  1071414.58, -3953714.14,  4969936.23,      50.690583,       -2.436122,   75072.64,   90333.43,    8357.39,             8371.39,  -233.01,  11980.95,           14068.23,    -31.76,    -15.59,          80.80,  +4.66,  +4.88
  0,     UK0038,       0,  0.183373, 2459443.394746940583, 280.73960,   7.51056,              186.39582,  45.99321,       186.41045,       45.97530,    280.73960,      +7.51056,     280.72990,       +7.49342,  1067573.91, -3956281.72,  4973024.68,      50.697817,       -2.496626,   78398.81,  108188.31,       0.00,             2814.26,    20.23,      0.00,           13568.57,     37.46,     10.40,          74.12,  +4.64,  +4.47
  1,     UK0038,       0,  0.263729, 2459443.394747870974, 281.22893,   7.22327,              185.67313,  45.73866,       185.71438,       45.68892,    281.22893,      +7.22327,     281.19894,       +7.17542,  1068385.44, -3955739.19,  4972372.10,      50.696292,       -2.484029,   77695.90,  107731.42,    1174.21,             3988.47,    73.69,  14612.63,           13568.57,    104.13,     28.98,         206.94,  +3.78,  +3.62
  2,     UK0038,       0,  0.303897, 2459443.394748335704, 281.41574,   7.08026,              185.39593,  45.60716,       185.42828,       45.56839,    281.41574,      +7.08026,     281.39294,       +7.04290,  1068721.27, -3955514.68,  4972102.04,      50.695660,       -2.478845,   77405.01,  107545.52,    1660.13,             4474.39,    -0.62,  12097.20,           13568.57,     81.20,     22.57,         161.64,  +3.22,  +3.06
  3,     UK0038,       0,  0.344069, 2459443.394748800900, 281.62256,   6.93388,              185.09132,  45.47283,       185.12077,       45.43777,    281.62256,      +6.93388,     281.60226,       +6.90003,  1069081.78, -3955273.67,  4971812.13,      50.694982,       -2.473267,   77092.77,  107347.89,    2181.77,             4996.02,   -39.28,  12985.03,           13568.57,     73.46,     20.41,         146.50,  +3.14,  +2.99
  4,     UK0038,       0,  0.384273, 2459443.394749266095, 281.85425,   6.75286,              184.75034,  45.30448,       184.76602,       45.28595,    281.85425,      +6.75286,     281.84481,       +6.73493,  1069496.52, -3954996.41,  4971478.63,      50.694201,       -2.466824,   76733.61,  107123.03,    2781.86,             5596.11,     0.07,  14926.07,           13673.73,     38.85,     10.78,          77.63,  +2.34,  +2.19
  5,     UK0038,       0,  0.424473, 2459443.394749731291, 282.07582,   6.58102,              184.42601,  45.14392,       184.42942,       45.13992,    282.07582,      +6.58102,     282.07600,       +6.57713,  1069891.01, -3954732.68,  4971161.40,      50.693458,       -2.460703,   76391.98,  106911.74,    3352.65,             6166.91,    10.19,  14198.94,           13772.02,      8.40,      2.33,          16.82,  +1.82,  +1.67
  6,     UK0038,       0,  0.464645, 2459443.394750196487, 282.30812,   6.44189,              184.09031,  45.01572,       184.10577,       44.99769,    282.30812,      +6.44189,     282.29928,       +6.42438,  1070271.17, -3954478.54,  4970855.69,      50.692741,       -2.454811,   76062.78,  106710.54,    3902.72,             6716.97,    -0.04,  13692.71,           13805.84,     37.84,     10.49,          75.90,  +2.47,  +2.33
  7,     UK0038,       0,  0.504789, 2459443.394750660751, 282.49478,   6.32138,              183.82102,  44.90336,       183.84151,       44.87959,    282.49478,      +6.32138,     282.48232,       +6.29824,  1070583.81, -3954269.53,  4970604.29,      50.692151,       -2.449994,   75792.03,  106546.92,    4355.07,             7169.33,  -107.59,  11268.36,           13637.25,     49.90,     13.84,         100.24,  +3.72,  +3.58
  0,     UK003J,       0,  0.165875, 2459443.394746740814, 280.62777,   7.57143,              186.56130,  46.04604,       186.56725,       46.03874,    280.62777,      +7.57143,     280.62480,       +7.56445,  1067391.52, -3956403.66,  4973171.36,      50.698159,       -2.499460,   78556.80,  108292.45,       0.00,             2550.34,     0.37,      0.00,           13935.29,     15.28,      4.24,          30.19,  +4.07,  +3.90
  1,     UK003J,       0,  0.245955, 2459443.394747667480, 281.10242,   7.27461,              185.85731,  45.78197,       185.87811,       45.75679,    281.10242,      +7.27461,     281.08824,       +7.25042,  1068194.76, -3955866.67,  4972525.43,      50.696650,       -2.486995,   77861.05,  107837.86,    1162.23,             3712.57,    45.70,  14513.35,           13935.29,     52.70,     14.64,         104.61,  +4.54,  +4.38
  2,     UK003J,       0,  0.286011, 2459443.394748131279, 281.29504,   7.12551,              185.57078,  45.64513,       185.58122,       45.63258,    281.29504,      +7.12551,     281.28914,       +7.11343,  1068542.70, -3955634.06,  4972245.64,      50.695996,       -2.481617,   77559.67,  107644.21,    1665.67,             4216.01,    -9.53,  12568.43,           13935.29,     26.29,      7.29,          52.27,  +3.75,  +3.59
  3,     UK003J,       0,  0.326047, 2459443.394748594612, 281.53605,   6.98191,              185.21749,  45.51592,       185.24015,       45.48888,    281.53605,      +6.98191,     281.52090,       +6.95581,  1068941.21, -3955367.65,  4971925.17,      50.695246,       -2.475433,   77214.53,  107424.67,    2242.29,             4792.63,     8.69,  14402.45,           13935.29,     56.66,     15.73,         112.91,  +2.65,  +2.49
  4,     UK003J,       0,  0.366103, 2459443.394749058411, 281.74598,   6.82834,              184.90875,  45.37416,       184.92542,       45.35439,    281.74598,      +6.82834,     281.73569,       +6.80923,  1069310.13, -3955121.01,  4971628.51,      50.694552,       -2.469720,   76895.02,  107223.74,    2776.09,             5326.43,   -16.19,  13326.33,           13838.15,     41.44,     11.50,          82.72,  +3.34,  +3.19
  5,     UK003J,       0,  0.406155, 2459443.394749521744, 281.97003,   6.66820,              184.58102,  45.22581,       184.59347,       45.21115,    281.97003,      +6.66820,     281.96319,       +6.65400,  1069699.07, -3954861.00,  4971315.75,      50.693819,       -2.463688,   76558.19,  107014.25,    3338.85,             5889.19,   -12.04,  14050.75,           13827.13,     30.75,      8.52,          61.50,  +1.76,  +1.61
  6,     UK003J,       0,  0.446207, 2459443.394749985542, 282.20478,   6.50628,              184.23965,  45.07535,       184.25122,       45.06182,    282.20478,      +6.50628,     282.19882,       +6.49314,  1070100.23, -3954592.81,  4970993.15,      50.693063,       -2.457460,   76210.80,  106800.72,    3919.30,             6469.64,     9.79,  14492.43,           13882.53,     28.39,      7.87,          56.90,  +2.33,  +2.19
  7,     UK003J,       0,  0.486267, 2459443.394750448875, 282.40642,   6.34769,              183.94650,  44.92591,       183.94589,       44.92663,    282.40642,      +6.34769,     282.40994,       +6.34839,  1070459.65, -3954352.53,  4970704.13,      50.692386,       -2.451897,   75899.56,  106611.69,    4439.35,             6989.69,   -28.89,  12981.75,           13842.66,     -1.50,     -0.42,           3.01,  +3.76,  +3.62
  8,     UK003J,       0,  0.566307, 2459443.394751375541, 282.85974,   6.11082,              183.29848,  44.70711,       183.34344,       44.65550,    282.85974,      +6.11082,     282.82911,       +6.06040,  1071170.35, -3953877.42,  4970132.63,      50.691045,       -2.440900,   75284.15,  106244.12,    5467.66,             8018.01,  -116.92,  12847.53,           13693.68,    108.47,     30.14,         218.57,  +4.37,  +4.24

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.