Orbital Analysis for matched events on 20210813_221416.375_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 51.07° Bg 38.16° Vg 59.49km/s
mass 0.01505g, abs. mag -0.8
Path Details
------------
start 0.31° 49.76° 111.47km
end   0.02° 49.58° 90.80km

Orbit Details
-------------
Semimajor axis 8.99A.U., eccentricity 0.89, inclination 115.30°, Period 26.97Y, LA Sun 141.08°, last Perihelion 1994-08-26

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: 2459440.426578424405
Time: 2021-08-13 22:14:16.375869 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002D and UK002W
 Convergence angle = 5.27827 deg
 R.A. =  31.97871  Dec = +54.07922 deg

Best intersection: Stations UK002D and UK002W with Qconv = 5.28 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   1870115.84 +/- 453.82 m
 Y =  -3761187.63 +/- 231.81 m
 Z =   4930602.98 +/- 71.18 m
 Vx =    29709.49 +/- 1300.59 m/s
 Vy =    18738.66 +/- 813.48 m/s
 Vz =    49276.26 +/- 599.17 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+2.150428e+05, -1.083011e+05, -2.151687e+04, +5.021116e+05, -2.324420e+05, -1.713015e+04
-1.083011e+05, +5.630988e+04, +1.244496e+04, -2.674048e+05, +1.261852e+05, +1.008122e+04
-2.151687e+04, +1.244496e+04, +5.141837e+03, -6.847295e+04, +3.238035e+04, +6.398314e+03
+5.021116e+05, -2.674048e+05, -6.847295e+04, +1.656537e+06, -7.882304e+05, -1.078296e+05
-2.324420e+05, +1.261852e+05, +3.238035e+04, -7.882304e+05, +3.832511e+05, +5.155381e+04
-1.713015e+04, +1.008122e+04, +6.398314e+03, -1.078296e+05, +5.155381e+04, +1.869628e+04

Timing offsets (from input data):
    UK002C: 0.000000 s
    UK002D: 0.000000 s
    UK002W: 0.000159 s

Reference point on the trajectory:
  Time: 2021-08-13 22:14:16.375869 UTC
  Lon     = ++0.305657 +/- 0.0042 deg
  Lat     = +49.758398 +/- 0.0030 deg
  Lat geo = +49.571787 +/- 0.0030 deg
  Ht      =  111480.49 +/- 229.11 m

  JD dynamic   = 2459440.427379165310 
  LST apparent = 296.4372165513 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  32.24085 +/- 2.1035 deg
  Dec       = +54.51777 +/- 0.5724 deg
  Azimuth   =  45.33066 +/- 1.4496 deg
  Elevation = +35.70813 +/- 0.5577 deg
  Vavg      =  59.26564 +/- 0.1565 km/s
  Vinit     =  60.51397 +/- 0.3164 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  32.19076 +/- 2.1035 deg
  Dec       = +54.28350 +/- 0.5724 deg
  Azimuth   =  45.58064 +/- 1.4496 deg
  Elevation = +35.58784 +/- 0.5577 deg
  Vavg      =  59.44304 +/- 0.1565 km/s
  Vinit     =  60.69137 +/- 0.3164 km/s
Radiant (geocentric, J2000):
  R.A.   =  32.55679 +/- 2.1124 deg
  Dec    = +54.10798 +/- 0.5612 deg
  Vg     =  59.48838 +/- 0.3220 km/s
  Vinf   =  60.51397 +/- 0.3164 km/s
  Zc     =  54.42317 +/- 0.5608 deg
  Zg     =  54.92674 +/- 0.5725 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  51.06789 +/- 1.6873 deg
  Bg     = +38.15545 +/- 0.0824 deg
  Vh     =  40.65377 +/- 0.2428 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  50.00187 +/- 4.6634 deg
  Bh     = +64.69229 +/- 0.1403 deg
  Vh_x   = -11.17035 +/- 1.2546 km/s
  Vh_y   = -13.31319 +/- 0.5874 km/s
  Vh_z   = -36.75203 +/- 0.1983 km/s
Orbit:
  La Sun = 141.078298 +/- nan deg
  a      =   8.992966 +/- 0.8447 AU
  e      =   0.887357 +/- 0.0215
  i      = 115.303820 +/- 0.3534 deg
  peri   = 180.981723 +/- 4.4083 deg
  node   = 141.076532 +/- 0.0000 deg
  Pi     = 322.058255 +/- 4.4082 deg
  q      =   1.012993 +/- 0.0050 AU
  f      = 359.014139 +/- 4.4083 deg
  M      = 359.972869 +/- 0.3175 deg
  Q      =  16.972938 +/- 1.6862 AU
  n      =   0.036547 +/- 0.0133 deg/day
  T      =  26.968391 +/- 3.2375 years
  Last perihelion JD = 2449590.793379 (1994-08-26 07:02:27.975607) +/- 1796.0675 days
  Tj     =   0.060580 +/- 0.1233
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +5.078736e-04, +7.953313e-05, -2.868039e+01, -8.800884e-09, +1.502474e-03, +1.111842e-04
q   , +7.953313e-05, +2.432488e-05, -2.155859e+00, -2.248679e-09, +3.688871e-04, +2.845906e-05
Tp  , -2.868039e+01, -2.155859e+00, +3.946755e+06, +3.109725e-04, -6.227199e+01, -3.919452e+00
node, -8.800884e-09, -2.248679e-09, +3.109725e-04, +2.426150e-13, -3.635330e-08, -3.068363e-09
peri, +1.502474e-03, +3.688871e-04, -6.227199e+01, -3.635330e-08, +6.110891e-03, +4.597413e-04
i   , +1.111842e-04, +2.845906e-05, -3.919452e+00, -3.068363e-09, +4.597413e-04, +3.880602e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 3.468489
 a2 = 8.546537

Mean time residuals from time vs. length:
  Station with reference time: UK002D
  Avg. res. = 1.293e-05 s
  Stddev    = 3.60e-03 s

Begin point on the trajectory:
  Lon =     0.305477 +/- 0.0040 deg
  Lat =    49.758283 +/- 0.0031 deg
  Ht  = 111467.13 +/- 219.02 m
End point on the trajectory:
  Lon =     0.023348 +/- 0.0037 deg
  Lat =    49.578206 +/- 0.0031 deg
  Ht  = 90798.44 +/- 181.72 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
    UK002C,    True,    -1.801980,    51.351940,  130.00, 404.440161,   0.000000,   111096.88,   106763.40,          0.023929,       nan,       nan,              81.67, 0.0000,    True,   False, {"ff_name": "FF_UK002C_20210813_221407_413_0185856.fits"}
    UK002D,   False,    -1.801980,    51.351940,  129.00,   0.046226,  16.265811,   111467.13,    91864.96,          0.013984,     62.00,      9.09,              81.67, 1.0000,    True,    True, {"ff_name": "FF_UK002D_20210813_221415_558_0186112.fits"}
    UK002W,   False,    -2.374601,    51.371449,   48.00,   6.831998,   7.489093,   107257.82,    90798.44,          0.015076,     74.10,      3.99,              78.24, 1.0000,    True,    True, {"ff_name": "FF_UK002W_20210813_221408_453_0183040.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,     UK002C,       1,  0.017340, 2459440.426578625105, 331.10031,  -6.23299,              139.21291,  24.36350,       139.19635,       24.34162,    331.10031,      -6.23299,     331.12326,       -6.24675,  1869793.15, -3761391.15,  4930067.77,      49.755083,       +0.300407,  111096.88,  258821.67,       0.00,              657.27,  -365.67,      0.00,           61462.66,    -17.51,    118.82,          95.71,  +3.54,  +1.47
  1,     UK002C,       1,  0.057476, 2459440.426579089835, 330.84351,  -6.66595,              139.66231,  24.07264,       139.65057,       24.05721,    330.84351,      -6.66595,     330.85993,       -6.67568,  1868662.82, -3762104.09,  4928193.01,      49.743464,       +0.282105,  109753.51,  258386.98,    2302.31,             2959.58,  -492.15,  57362.77,           61462.66,    -12.34,     83.81,          67.63,  +2.17,  +0.11
  2,     UK002C,       1,  0.097612, 2459440.426579554100, 330.56964,  -7.11073,              140.13142,  23.77620,       140.11960,       23.76072,    330.56964,      -7.11073,     330.58632,       -7.12053,  1867494.07, -3762841.25,  4926254.51,      49.731441,       +0.263188,  108365.01,  257958.71,    4682.89,             5340.16,  -540.36,  59312.77,           61462.66,    -12.39,     84.10,          67.97,  +1.38,  -0.68
  3,     UK002C,       1,  0.137760, 2459440.426580018830, 330.24306,  -7.62007,              140.67828,  23.43968,       140.65971,       23.41551,    330.24306,      -7.62007,     330.26912,       -7.63543,  1866145.33, -3763691.94,  4924017.50,      49.717558,       +0.241385,  106763.40,  257492.14,    7430.07,             8087.34,  -222.69,  68426.36,           61462.66,    -19.39,    131.45,         106.44,  +0.87,  -1.18
  0,     UK002D,       0,  0.000000, 2459440.426578424405, 331.20679,  -6.13518,              139.06282,  24.40916,       139.07075,       24.41965,    331.20679,      -6.13518,     331.19583,       -6.12859,  1870104.60, -3761194.71,  4930584.34,      49.758283,       +0.305477,  111467.13,  258946.43,       0.00,               22.89,    49.29,      0.00,           59832.51,      8.35,    -56.93,          45.84,  +2.57,  +0.50
  1,     UK002D,       0,  0.040364, 2459440.426578891464, 330.93060,  -6.57886,              139.53689,  24.11692,       139.54280,       24.12471,    330.93060,      -6.57886,     330.92262,       -6.57395,  1868930.02, -3761935.55,  4928636.18,      49.746211,       +0.286464,  110071.02,  258489.67,    2392.44,             2415.34,    -0.85,  59271.70,           59832.51,      6.21,    -42.29,          34.11,  +1.90,  -0.16
  2,     UK002D,       0,  0.080744, 2459440.426579358988, 330.67584,  -7.04312,              139.99621,  23.79546,       140.01847,       23.82463,    330.67584,      -7.04312,     330.64553,       -7.02468,  1867745.01, -3762682.98,  4926670.72,      49.734023,       +0.267284,  108663.09,  258050.67,    4806.15,             4829.04,   -30.70,  59774.72,           59832.51,     23.20,   -158.53,         128.06,  +1.38,  -0.68
  3,     UK002D,       0,  0.121096, 2459440.426579826046, 330.36768,  -7.48424,              140.49559,  23.51475,       140.49867,       23.51877,    330.36768,      -7.48424,     330.36396,       -7.48169,  1866547.03, -3763438.58,  4924683.74,      49.721694,       +0.247898,  107240.33,  257629.31,    7246.26,             7269.15,   -32.45,  60470.67,           59832.51,      3.21,    -21.84,          17.67,  +0.98,  -1.07
  4,     UK002D,       0,  0.161460, 2459440.426580293104, 330.07823,  -7.93025,              140.97592,  23.22017,       140.97168,       23.21467,    330.07823,      -7.93025,     330.08472,       -7.93375,  1865365.33, -3764183.91,  4922723.79,      49.709523,       +0.228775,  105837.49,  257235.70,    9653.20,             9676.09,   -68.10,  59630.79,           59854.04,     -4.41,     29.94,          24.27,  +0.87,  -1.18
  5,     UK002D,       0,  0.201852, 2459440.426580760628, 329.79992,  -8.41214,              141.45791,  22.88638,       141.46443,       22.89480,    329.79992,      -8.41214,     329.79184,       -8.40676,  1864132.06, -3764961.77,  4920678.27,      49.696813,       +0.208825,  104374.03,  256848.74,   12165.20,            12188.10,    -0.37,  62190.66,           60194.23,      6.73,    -45.86,          37.22,  +0.57,  -1.48
  6,     UK002D,       0,  0.242216, 2459440.426581227686, 329.51679,  -8.86024,              141.92743,  22.58367,       141.93149,       22.58890,    329.51679,      -8.86024,     329.51224,       -8.85689,  1862961.29, -3765700.21,  4918736.44,      49.684738,       +0.189879,  102985.32,  256503.40,   14549.88,            14572.78,   -58.28,  59079.37,           60196.25,      4.19,    -28.51,          23.17,  +0.57,  -1.48
  7,     UK002D,       0,  0.282572, 2459440.426581694745, 329.21897,  -9.30496,              142.40733,  22.28786,       142.40043,       22.27902,    329.21897,      -9.30496,     329.22957,       -9.31065,  1861783.62, -3766443.00,  4916783.14,      49.672583,       +0.170824,  101588.98,  256178.11,   16948.64,            16971.54,  -101.62,  59440.00,           60134.10,     -7.10,     48.23,          39.25,  +0.54,  -1.50
  8,     UK002D,       0,  0.322968, 2459440.426582162268, 328.93749,  -9.78957,              142.88495,  21.94711,       142.88946,       21.95286,    328.93749,      -9.78957,     328.93269,       -9.78586,  1860552.70, -3767219.38,  4914741.54,      49.659870,       +0.150917,  100130.14,  255862.13,   19455.83,            19478.73,   -38.95,  62065.36,           60233.93,      4.61,    -31.38,          25.57,  +0.45,  -1.59
  9,     UK002D,       0,  0.363344, 2459440.426582629792, 328.62571, -10.25281,              143.38056,  21.63554,       143.37378,       21.62693,    328.62571,     -10.25281,     328.63647,      -10.25839,  1859330.97, -3767989.96,  4912715.16,      49.647243,       +0.131158,   98682.78,  255572.53,   21944.34,            21967.23,     6.24,  61633.28,           60361.09,     -6.94,     47.07,          38.40,  +0.29,  -1.75
 10,     UK002D,       0,  0.403716, 2459440.426583096851, 328.35773, -10.71131,              143.82853,  21.31016,       143.83276,       21.31551,    328.35773,     -10.71131,     328.35365,      -10.70782,  1858170.80, -3768721.72,  4910790.91,      49.635244,       +0.112387,   97308.93,  255319.46,   24307.43,            24330.33,   -73.73,  58533.00,           60347.35,      4.31,    -29.32,          23.94,  +0.28,  -1.76
 11,     UK002D,       0,  0.444096, 2459440.426583564375, 328.04798, -11.18495,              144.32057,  20.98424,       144.31920,       20.98250,    328.04798,     -11.18495,     328.05171,      -11.18608,  1856937.85, -3769499.37,  4908745.94,      49.622484,       +0.092451,   95849.51,  255074.77,   26818.77,            26841.66,    -5.96,  62192.48,           60410.40,     -1.40,      9.51,           7.77,  +0.23,  -1.80
 12,     UK002D,       0,  0.484452, 2459440.426584031433, 327.77718, -11.61995,              144.75651,  20.67816,       144.75791,       20.67992,    327.77718,     -11.61995,     327.77730,      -11.61880,  1855823.66, -3770202.13,  4906897.93,      49.610944,       +0.074420,   94531.18,  254874.23,   29088.23,            29111.12,  -178.60,  56235.99,           60310.95,      1.42,     -9.66,           7.91,  +0.17,  -1.86
 13,     UK002D,       0,  0.524820, 2459440.426584498491, 327.47284, -12.08060,              145.23252,  20.35852,       145.22803,       20.35292,    327.47284,     -12.08060,     327.48113,      -12.08429,  1854626.12, -3770957.45,  4904911.70,      49.598533,       +0.055055,   93114.82,  254681.67,   31527.43,            31550.32,  -182.23,  60424.11,           60251.67,     -4.54,     30.82,          25.23,  +0.26,  -1.77
 14,     UK002D,       0,  0.565172, 2459440.426584965549, 327.24064, -12.51056,              145.62396,  20.04012,       145.64223,       20.06288,    327.24064,     -12.51056,     327.21820,      -12.49554,  1853568.97, -3771624.23,  4903158.29,      49.587570,       +0.037941,   91864.96,  254530.35,   33680.70,            33703.60,  -470.81,  53362.37,           60041.00,     18.39,   -125.28,         102.61,  +0.25,  -1.78
  0,     UK002W,       1,  0.075699, 2459440.426579299383, 337.02531,  -6.62862,              133.09929,  21.18289,       133.14997,       21.25476,    337.02531,      -6.62862,     336.95018,       -6.58643,  1867846.30, -3762619.09,  4926838.73,      49.735065,       +0.268931,  108783.42,  284946.03,       0.00,             4622.72,    68.27,      0.00,           59763.06,     22.31,   -427.16,         309.63,  +3.54,  +1.27
  1,     UK002W,       0,  0.115683, 2459440.426579762250, 336.72154,  -7.04817,              133.59231,  20.94767,       133.61051,       20.97337,    336.72154,      -7.04817,     336.69497,       -7.03303,  1866561.76, -3763429.29,  4924708.17,      49.721845,       +0.248157,  107257.82,  284334.83,    2616.44,             7239.15,   265.12,  65437.09,           59763.06,      8.13,   -152.72,         110.94,  +1.86,  -0.41
  2,     UK002W,       0,  0.155695, 2459440.426580225118, 336.48472,  -7.43457,              134.00401,  20.71013,       134.01450,       20.72488,    336.48472,      -7.43457,     336.46982,       -7.42586,  1865436.09, -3764139.28,  4922841.14,      49.710252,       +0.229934,  105921.48,  283817.10,    4909.26,             9531.98,   136.66,  57303.40,           59763.06,      4.69,    -87.60,          63.75,  +1.69,  -0.58
  3,     UK002W,       0,  0.195699, 2459440.426580688450, 336.23562,  -7.81658,              134.42359,  20.48072,       134.41901,       20.47429,    336.23562,      -7.81658,     336.24323,       -7.82039,  1864309.28, -3764849.99,  4920972.21,      49.698640,       +0.211693,  104584.29,  283316.59,    7204.41,            11827.13,    11.01,  57372.99,           59763.06,     -2.06,     38.19,          27.84,  +1.26,  -1.00
  4,     UK002W,       0,  0.235735, 2459440.426581151783, 335.99567,  -8.26338,              134.86379,  20.18796,       134.86802,       20.19387,    335.99567,      -8.26338,     335.99040,       -8.25988,  1863058.14, -3765639.12,  4918897.07,      49.685737,       +0.191460,  103100.19,  282782.63,    9752.79,            14375.51,   136.65,  63652.23,           60220.58,      1.88,    -35.05,          25.60,  +0.71,  -1.55
  5,     UK002W,       0,  0.275759, 2459440.426581615116, 335.74583,  -8.69650,              135.30475,  19.91036,       135.30906,       19.91635,    335.74583,      -8.69650,     335.74061,       -8.69293,  1861829.43, -3766414.11,  4916859.12,      49.673056,       +0.171588,  101643.31,  282279.61,   12255.51,            16878.22,   217.35,  62530.36,           60681.34,      1.91,    -35.59,          26.04,  +0.69,  -1.56
  6,     UK002W,       0,  0.315767, 2459440.426582077984, 335.50484,  -9.07501,              135.70977,  19.67642,       135.70295,       19.66696,    335.50484,      -9.07501,     335.51622,       -9.08066,  1860732.63, -3767105.89,  4915039.97,      49.661729,       +0.153832,  100343.35,  281847.89,   14489.52,            19112.24,    30.33,  55839.21,           60327.10,     -3.04,     56.15,          41.15,  +0.76,  -1.49
  7,     UK002W,       0,  0.355803, 2459440.426582541317, 335.29197,  -9.47410,              136.09635,  19.41054,       136.09916,       19.41443,    335.29197,      -9.47410,     335.28931,       -9.47177,  1859629.18, -3767801.87,  4913209.78,      49.650326,       +0.135971,   99036.01,  281430.93,   16737.10,            21359.81,  -144.84,  56138.84,           59830.27,      1.24,    -23.07,          16.94,  +0.52,  -1.73
  8,     UK002W,       0,  0.395803, 2459440.426583004184, 335.02592,  -9.88093,              136.53474,  19.15940,       136.52255,       19.14262,    335.02592,      -9.88093,     335.04552,       -9.89101,  1858449.42, -3768545.98,  4911253.03,      49.638127,       +0.116888,   97638.81,  281004.97,   19140.10,            23762.82,  -162.39,  60075.13,           59614.79,     -5.41,     99.64,          73.24,  +0.15,  -2.09
  9,     UK002W,       0,  0.435835, 2459440.426583467517, 334.80817, -10.28473,              136.92461,  18.88891,       136.92163,       18.88482,    334.80817,     -10.28473,     334.81438,      -10.28719,  1857337.33, -3769247.41,  4909408.51,      49.626619,       +0.098890,   96322.28,  280621.36,   21405.27,            26027.99,  -319.71,  56584.07,           59339.70,     -1.31,     24.29,          17.88,  +0.06,  -2.18
 10,     UK002W,       0,  0.475851, 2459440.426583930850, 334.56483, -10.68625,              137.33568,  18.63012,       137.32846,       18.62027,    334.56483,     -10.68625,     334.57741,      -10.69220,  1856203.02, -3769962.85,  4907527.15,      49.614874,       +0.080538,   94979.97,  280248.66,   23715.69,            28338.40,  -430.83,  57737.26,           59116.83,     -3.18,     58.58,          43.18,  -0.01,  -2.25
 11,     UK002W,       0,  0.515883, 2459440.426584394183, 334.33062, -11.11246,              137.74757,  18.34385,       137.74858,       18.34523,    334.33062,     -11.11246,     334.33130,      -11.11163,  1855030.88, -3770702.16,  4905583.02,      49.602729,       +0.061581,   93593.45,  279883.41,   26103.18,            30725.90,  -465.83,  59639.68,           59008.36,      0.44,     -8.16,           6.02,  -0.26,  -2.49
 12,     UK002W,       0,  0.555899, 2459440.426584857516, 334.06674, -11.55181,              138.19109,  18.05672,       138.18949,       18.05454,    334.06674,     -11.55181,     334.07142,      -11.55313,  1853799.61, -3771478.76,  4903540.83,      49.589962,       +0.041677,   92137.61,  279521.68,   28611.10,            33233.82,  -379.44,  62672.89,           59063.62,     -0.70,     12.95,           9.57,  -0.27,  -2.50
 13,     UK002W,       0,  0.595895, 2459440.426585320383, 333.80353, -11.94625,              138.61199,  17.80845,       138.59507,       17.78556,    333.80353,     -11.94625,     333.83082,      -11.96021,  1852666.56, -3772193.40,  4901661.55,      49.578206,       +0.023348,   90798.44,  279207.82,   30918.96,            35541.68,  -491.89,  57702.26,           59059.48,     -7.43,    136.21,         100.77,  +0.38,  -1.85

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.