Orbital Analysis for matched events on 20210810_003027.548_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 60.04° Bg 38.76° Vg 61.06km/s
mass 0.05712g, abs. mag -0.7
Path Details
------------
start 0.32° 53.82° 117.73km
end   0.00° 53.68° 86.70km

Orbit Details
-------------
Semimajor axis -8.34A.U., eccentricity 1.12, inclination 114.04°, Period 1000000000.00Y, LA Sun 137.33°, 

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: 2459436.521152178291
Time: 2021-08-10 00:30:27.588277 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0026 and UK002F
 Convergence angle = 59.34489 deg
 R.A. =  43.51957  Dec = +57.67993 deg

Best intersection: Stations UK0026 and UK002F with Qconv = 59.34 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3210860.51 +/- 65.84 m
 Y =  -2111532.42 +/- 62.10 m
 Z =   5222250.83 +/- 218.48 m
 Vx =    24059.21 +/- 300.65 m/s
 Vy =    22781.33 +/- 243.68 m/s
 Vz =    52475.98 +/- 473.41 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00

Timing offsets (from input data):
    UK0026: 0.000000 s
    UK002F: -0.000345 s

Reference point on the trajectory:
  Time: 2021-08-10 00:30:27.588277 UTC
  Lon     = ++0.341204 +/- 0.0012 deg
  Lat     = +53.831610 +/- 0.0011 deg
  Lat geo = +53.651456 +/- 0.0011 deg
  Ht      =  119547.96 +/- 180.94 m

  JD dynamic   = 2459436.521953382995 
  LST apparent = 326.6702013569 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  43.43727 +/- 0.1315 deg
  Dec       = +57.73149 +/- 0.1206 deg
  Azimuth   =  52.39163 +/- 0.1910 deg
  Elevation = +49.00178 +/- 0.0600 deg
  Vavg      =  60.46050 +/- 0.2060 km/s
  Vinit     =  62.06097 +/- 0.4780 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  43.54729 +/- 0.1315 deg
  Dec       = +57.51899 +/- 0.1206 deg
  Azimuth   =  52.63099 +/- 0.1910 deg
  Elevation = +48.84721 +/- 0.0600 deg
  Vavg      =  60.60660 +/- 0.2060 km/s
  Vinit     =  62.20707 +/- 0.4780 km/s
Radiant (geocentric, J2000):
  R.A.   =  43.59978 +/- 0.1295 deg
  Dec    = +57.47628 +/- 0.1236 deg
  Vg     =  61.06239 +/- 0.4856 km/s
  Vinf   =  62.06097 +/- 0.4780 km/s
  Zc     =  41.10836 +/- 0.0599 deg
  Zg     =  41.45685 +/- 0.0634 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  60.04319 +/- 0.1210 deg
  Bg     = +38.76494 +/- 0.1059 deg
  Vh     =  43.08810 +/- 0.4913 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  78.19725 +/- 0.2318 deg
  Bh     = +62.54122 +/- 0.1366 deg
  Vh_x   =  -4.06394 +/- 0.1198 km/s
  Vh_y   = -19.44831 +/- 0.3046 km/s
  Vh_z   = -38.23392 +/- 0.3900 km/s
Orbit:
  La Sun = 137.329432 +/- -0.0000 deg
  a      =  -8.338972 +/- 1.2392 AU
  e      =   1.115117 +/- 0.0471
  i      = 114.038888 +/- 0.1468 deg
  peri   = 154.069751 +/- 0.4451 deg
  node   = 137.328647 +/- 0.0000 deg
  Pi     = 291.398398 +/- 0.4451 deg
  q      =   0.959955 +/- 0.0010 AU
  f      =  25.926221 +/- 0.4452 deg
  M      =        nan +/- nan deg
  Q      = -17.637899 +/- 2.4778 AU
  n      =   0.040929 +/- 0.0338 deg/day
  T      = 1000000000.000000 +/- 0.0000 years
  Last perihelion JD = NaN 
  Tj     =  -1.132972 +/- 0.2627
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
q   , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
Tp  , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
node, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
peri, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
i   , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 8.187175
 a2 = 6.721262

Mean time residuals from time vs. length:
  Station with reference time: UK0026
  Avg. res. = 1.399e-05 s
  Stddev    = 3.74e-03 s

Begin point on the trajectory:
  Lon =     0.322585 +/- 0.0005 deg
  Lat =    53.823123 +/- 0.0010 deg
  Ht  = 117734.73 +/- 132.40 m
End point on the trajectory:
  Lon =     0.000085 +/- 0.0001 deg
  Lat =    53.676419 +/- 0.0006 deg
  Ht  = 86704.79 +/- 57.37 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
    UK0026,   False,    -0.023645,    52.984073,    6.00,   4.683748,   7.530255,   117734.73,    86704.79,          0.021795,     27.06,     41.16,              24.12, 1.0000,    True,    True, {"ff_name": "FF_UK0026_20210810_003026_858_0377088.fits"}
    UK002F,   False,    -1.306160,    51.883100,   80.00,  11.652935,   6.211704,   109116.49,    87165.02,          0.016746,     74.06,      3.15,              28.98, 1.0000,    True,    True, {"ff_name": "FF_UK002F_20210810_003025_241_0354816.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,     UK0026,       1,  0.000000, 2459436.521152178291,  68.37594,  80.69486,               14.28246,  50.13927,        14.28574,       50.12751,     68.37594,     +80.69486,      68.43756,      +80.68827,  3210861.94, -2111531.07,  5222253.95,      53.831623,       +0.341400,  119550.75,  154774.96,       0.00,                3.69,   -64.45,      0.00,           61530.33,     26.96,     17.73,          43.00,  +5.96,  +5.01
  1,     UK0026,       0,  0.040088, 2459436.521152642090,  69.86799,  80.98457,               13.71994,  50.03887,        13.71324,       50.06173,     69.86799,     +80.98457,      69.74638,      +80.99788,  3209929.06, -2112414.40,  5220219.22,      53.823123,       +0.322585,  117734.73,  152580.09,    2406.38,             2402.69,  -153.35,  60027.44,           61530.33,    -51.69,    -34.11,          83.72,  +3.53,  +2.61
  2,     UK0026,       0,  0.080144, 2459436.521153105889,  71.37514,  81.33773,               13.06997,  49.97693,        13.06787,       49.98381,     71.37514,     +81.33773,      71.33798,      +81.34190,  3208904.60, -2113384.44,  5217984.76,      53.813779,       +0.301937,  115740.88,  150177.61,    5048.97,             5045.28,     3.33,  65972.45,           61530.33,    -15.36,    -10.12,          25.26,  +2.62,  +1.74
  3,     UK0026,       0,  0.120212, 2459436.521153569687,  72.94967,  81.63403,               12.49775,  49.89649,        12.49302,       49.91139,     72.94967,     +81.63403,      72.86775,      +81.64338,  3208017.45, -2114224.47,  5216049.78,      53.805680,       +0.284030,  114014.61,  148103.68,    7337.38,             7333.70,  -194.91,  57113.21,           61530.33,    -32.81,    -21.63,          54.73,  +2.48,  +1.63
  4,     UK0026,       0,  0.160276, 2459436.521154033486,  74.90350,  82.00564,               11.78818,  49.81853,        11.78833,       49.81809,     74.90350,     +82.00564,      74.90667,      +82.00535,  3206957.25, -2115228.36,  5213737.36,      53.795993,       +0.262660,  111952.06,  145634.15,   10072.18,            10068.49,    53.47,  68260.75,           62582.58,      0.96,      0.63,           1.63,  +1.64,  +0.82
  5,     UK0026,       0,  0.200364, 2459436.521154497284,  77.13981,  82.33374,               11.11629,  49.70868,        11.11094,       49.72414,     77.13981,     +82.33374,      77.05247,      +82.34436,  3205967.75, -2116165.30,  5211579.14,      53.786943,       +0.242701,  110027.49,  143338.10,   12624.61,            12620.92,   118.00,  63670.50,           63038.76,    -33.09,    -21.81,          57.03,  +1.53,  +0.75
  6,     UK0026,       0,  0.240424, 2459436.521154961083,  79.31112,  82.65524,               10.46629,  49.62642,        10.46479,       49.63059,     79.31112,     +82.65524,      79.28809,      +82.65823,  3205049.68, -2117034.62,  5209576.71,      53.778538,       +0.224168,  108242.19,  141215.73,   14992.80,            14989.11,     0.02,  59116.09,           62781.47,     -8.83,     -5.81,          15.44,  +1.06,  +0.31
  7,     UK0026,       0,  0.280508, 2459436.521155424882,  81.95944,  82.97751,                9.77365,  49.51818,         9.77087,       49.52563,     81.95944,     +82.97751,      81.91774,      +82.98311,  3204089.20, -2117944.08,  5207481.79,      53.769737,       +0.204783,  106374.84,  139004.10,   17470.36,            17466.67,   -10.06,  61809.25,           62593.21,    -15.53,    -10.23,          27.59,  +1.03,  +0.31
  8,     UK0026,       0,  0.320588, 2459436.521155888680,  84.94661,  83.29805,                9.05636,  49.40555,         9.05375,       49.41229,     84.94661,     +83.29805,      84.90947,      +83.30337,  3203123.35, -2118858.63,  5205375.16,      53.760878,       +0.185288,  104497.44,  136789.52,   19961.77,            19958.08,    -6.06,  62161.00,           62476.54,    -13.88,     -9.14,          25.06,  +0.85,  +0.17
  9,     UK0026,       0,  0.360632, 2459436.521156352479,  87.89882,  83.63213,                8.33643,  49.33742,         8.35268,       49.29676,     87.89882,     +83.63213,      88.12873,      +83.59865,  3202204.60, -2119728.58,  5203371.26,      53.752444,       +0.166732,  102711.95,  134692.04,   22331.70,            22328.01,  -121.30,  59183.04,           62237.65,     82.62,     54.15,         151.27,  +0.66,  +0.01
 10,     UK0026,       0,  0.400724, 2459436.521156816278,  91.75442,  83.92359,                7.58383,  49.20226,         7.59846,       49.16701,     91.75442,     +83.92359,      91.94537,      +83.89309,  3201241.94, -2120640.11,  5201271.59,      53.743599,       +0.147295,  100841.52,  132504.43,   24814.89,            24811.20,  -126.26,  61937.27,           62093.66,     70.63,     46.31,         131.48,  +0.31,  -0.30
 11,     UK0026,       0,  0.440828, 2459436.521157280542,  96.10159,  84.18823,                6.81827,  49.05545,         6.82967,       49.02898,     96.10159,     +84.18823,      96.23508,      +84.16419,  3200287.29, -2121544.06,  5199189.38,      53.734819,       +0.128015,   98987.03,  130345.70,   27277.42,            27273.73,  -152.62,  61403.69,           61984.03,     52.32,     34.32,          99.01,  +0.30,  -0.28
 12,     UK0026,       0,  0.480936, 2459436.521157744806, 100.85532,  84.40758,                6.06366,  48.89529,         6.06763,       48.88640,    100.85532,     +84.40758,     100.89648,      +84.39914,  3199366.37, -2122416.07,  5197180.74,      53.726341,       +0.109407,   97198.43,  128273.77,   29652.95,            29649.26,  -266.23,  59228.37,           61826.83,     17.33,     11.38,          33.34,  +0.07,  -0.47
 13,     UK0026,       0,  0.521052, 2459436.521158209071, 106.12429,  84.58391,                5.29635,  48.71948,         5.28929,       48.73472,    106.12429,     +84.58391,     106.07114,      +84.59897,  3198450.17, -2123283.60,  5195182.40,      53.717900,       +0.090891,   95419.37,  126223.30,   32016.29,            32012.61,  -392.52,  58912.72,           61644.67,    -29.32,    -19.30,          57.36,  -0.18,  -0.69
 14,     UK0026,       0,  0.561148, 2459436.521158672869, 112.37754,  84.77527,                4.40450,  48.56108,         4.40735,       48.55515,    112.37754,     +84.77527,     112.39513,      +84.76920,  3197439.25, -2124240.83,  5192977.47,      53.708577,       +0.070476,   93456.81,  123974.11,   34623.97,            34620.28,  -273.25,  65035.70,           61611.12,     11.27,      7.40,          22.43,  -0.34,  -0.81
 15,     UK0026,       0,  0.601248, 2459436.521159137134, 118.57565,  84.88132,                3.58453,  48.39495,         3.59098,       48.38193,    118.57565,     +84.88132,     118.59611,      +84.86772,  3196529.64, -2125102.13,  5190993.50,      53.700181,       +0.052086,   91691.28,  121962.66,   36970.32,            36966.63,  -415.54,  58512.56,           61520.28,     24.38,     16.00,          49.32,  -0.25,  -0.68
 16,     UK0026,       0,  0.641364, 2459436.521159601398, 125.05939,  84.91051,                2.76472,  48.20570,         2.76755,       48.20016,    125.05939,     +84.91051,     125.06238,      +84.90466,  3195635.53, -2125948.75,  5189043.33,      53.691921,       +0.034005,   89956.18,  119997.55,   39276.69,            39273.00,  -598.81,  57492.50,           61378.88,     10.25,      6.73,          21.07,  -0.17,  -0.57
 17,     UK0026,       0,  0.681516, 2459436.521160066128, 132.56375,  84.84123,                1.82770,  47.95769,         1.81546,       47.98072,    132.56375,     +84.84123,     132.60107,      +84.86547,  3194628.08, -2126902.68,  5186845.98,      53.682605,       +0.013649,   88001.58,  117798.50,   41875.40,            41871.71,  -491.96,  64721.95,           61338.43,    -41.97,    -27.62,          87.98,  -0.23,  -0.59
 18,     UK0026,       0,  0.721624, 2459436.521160530392, 137.54279,  84.74209,                1.19040,  47.78104,         1.16587,       47.82607,    137.54279,     +84.74209,     137.65778,      +84.78894,  3193959.61, -2127535.65,  5185387.96,      53.676419,       +0.000085,   86704.79,  116348.48,   43599.73,            43596.05, -1256.77,  42992.18,           61019.57,    -81.30,    -53.58,         172.61,  +1.07,  +0.74
  0,     UK002F,       1,  0.183916, 2459436.521154310554, 100.26661,  55.80243,               25.63807,  23.85134,        25.69167,       23.81822,    100.26661,     +55.80243,     100.21866,      +55.74998,  3206417.30, -2115739.64,  5212559.65,      53.791055,       +0.251761,  110901.80,  263339.93,       0.00,            11461.32,   -20.81,      0.00,           65895.35,    -11.35,    271.73,         213.02,  +4.14,  +2.04
  1,     UK002F,       0,  0.224104, 2459436.521154775750, 100.63480,  55.63247,               25.52634,  23.60347,        25.52970,       23.60140,    100.63480,     +55.63247,     100.63266,      +55.62919,  3205499.30, -2116608.87,  5210557.40,      53.782655,       +0.233230,  109116.49,  261293.22,    2367.98,            13829.29,  -146.94,  58922.46,           65895.35,     -0.74,     16.88,          13.34,  +1.80,  -0.29
  2,     UK002F,       0,  0.264280, 2459436.521155240946, 101.20393,  55.50119,               25.28339,  23.33677,        25.31793,       23.31548,    101.20393,     +55.50119,     101.17299,      +55.46759,  3204311.90, -2117733.21,  5207967.54,      53.771778,       +0.209306,  106807.80,  258655.50,    5430.88,            16892.20,   422.61,  76237.21,           65895.35,     -7.30,    172.28,         137.50,  +1.14,  -0.92
  3,     UK002F,       0,  0.304456, 2459436.521155705675, 101.60190,  55.34517,               25.14427,  23.09386,        25.15091,       23.08977,    101.60190,     +55.34517,     101.59695,      +55.33873,  3203391.71, -2118604.53,  5205960.48,      53.763340,       +0.190724,  105019.04,  256616.91,    7804.54,            19265.86,   302.91,  59081.54,           65895.35,     -1.42,     32.88,          26.45,  +1.02,  -1.03
  4,     UK002F,       0,  0.344612, 2459436.521156170405, 101.99082,  55.21107,               24.99741,  22.87300,        24.99298,       22.87572,    101.99082,     +55.21107,     101.99644,      +55.21535,  3202532.86, -2119417.76,  5204087.23,      53.755458,       +0.173368,  103349.84,  254719.27,   10019.95,            21481.26,    26.19,  55169.97,           63414.93,      0.95,    -21.78,          17.65,  +0.83,  -1.20
  5,     UK002F,       0,  0.384760, 2459436.521156635135, 102.48930,  55.09844,               24.77785,  22.64320,        24.80866,       22.62426,    102.48930,     +55.09844,     102.46156,      +55.06869,  3201541.02, -2120356.92,  5201923.91,      53.746348,       +0.153347,  101422.59,  252535.06,   12578.41,            24039.72,    93.03,  63725.72,           62750.36,     -6.36,    150.47,         123.01,  +0.67,  -1.34
  6,     UK002F,       0,  0.424936, 2459436.521157100331, 102.83235,  54.93414,               24.66781,  22.40793,        24.65566,       22.41538,    102.83235,     +54.93414,     102.84580,      +54.94584,  3200730.26, -2121124.62,  5200155.54,      53.738894,       +0.136949,   99847.47,  250754.12,   14669.78,            26131.09,  -308.96,  52055.19,           61366.83,      2.58,    -58.94,          48.53,  +0.70,  -1.30
  7,     UK002F,       0,  0.465084, 2459436.521157565061, 103.28180,  54.81202,               24.47655,  22.18327,        24.48352,       22.17899,    103.28180,     +54.81202,     103.27700,      +54.80532,  3199827.24, -2121979.67,  5198185.97,      53.730585,       +0.118701,   98093.48,  248776.87,   16999.11,            28460.42,  -471.26,  58018.60,           60511.47,     -1.45,     33.60,          27.89,  +0.49,  -1.49
  8,     UK002F,       0,  0.505256, 2459436.521158029791, 103.77357,  54.66511,               24.27161,  21.92617,        24.29161,       21.91390,    103.77357,     +54.66511,     103.75615,      +54.64595,  3198832.31, -2122921.75,  5196015.90,      53.721422,       +0.098610,   96161.37,  246606.05,   19565.54,            31026.86,  -397.94,  63886.09,           60337.22,     -4.06,     95.66,          80.08,  +0.23,  -1.73
  9,     UK002F,       0,  0.545424, 2459436.521158494521, 104.17238,  54.51600,               24.11782,  21.69112,        24.12667,       21.68570,    104.17238,     +54.51600,     104.16596,      +54.50754,  3197990.03, -2123719.30,  5194178.79,      53.713658,       +0.081573,   94525.99,  244773.70,   21738.21,            33199.53,  -718.13,  54089.67,           59907.72,     -1.80,     42.06,          35.47,  +0.13,  -1.81
 10,     UK002F,       0,  0.585636, 2459436.521158960182, 104.70334,  54.32302,               23.90781,  21.38368,        23.90949,       21.38265,    104.70334,     +54.32302,     104.70412,      +54.32141,  3196891.98, -2124759.03,  5191783.82,      53.703527,       +0.059409,   92394.54,  242394.87,   24570.64,            36031.95,  -381.30,  70437.30,           60152.64,     -0.34,      7.93,           6.75,  -0.04,  -1.96
 11,     UK002F,       0,  0.625824, 2459436.521159425378, 105.17927,  54.15105,               23.71655,  21.10952,        23.71501,       21.11046,    105.17927,     +54.15105,     105.18342,      +54.15250,  3195924.41, -2125675.20,  5189673.43,      53.694591,       +0.039857,   90516.77,  240306.47,   27066.49,            38527.81,  -379.55,  62104.52,           60369.04,      0.31,     -7.16,           6.15,  +0.06,  -1.84
 12,     UK002F,       0,  0.665988, 2459436.521159890108, 105.58606,  53.99872,               23.55357,  20.87074,        23.54692,       20.87480,    105.58606,     +53.99872,     105.59555,      +54.00502,  3195100.46, -2126455.39,  5187876.30,      53.686974,       +0.023179,   88918.00,  238533.67,   29191.88,            40653.20,  -746.78,  52917.67,           60254.17,      1.33,    -30.91,          26.75,  +0.20,  -1.69
 13,     UK002F,       0,  0.706168, 2459436.521160355303, 106.04275,  53.83420,               23.36560,  20.60899,        23.36054,       20.61208,    106.04275,     +53.83420,     106.05083,      +53.83896,  3194196.85, -2127311.01,  5185905.42,      53.678615,       +0.004903,   87165.02,  236596.70,   31522.76,            42984.07,  -909.51,  58010.88,           60117.86,      1.00,    -23.28,          20.32,  +0.28,  -1.59

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.