Orbital Analysis for matched events on 20210929_024845.878_UK

Summary for Event
-----------------
shower ID 208 SPE
Lg 75.55° Bg 15.79° Vg 64.03km/s
mass 0.01175g, abs. mag 0.1
Path Details
------------
start -1.92° 53.13° 110.82km
end   -2.01° 53.16° 94.17km

Orbit Details
-------------
Semimajor axis 4.41A.U., eccentricity 0.85, inclination 148.14°, Period 9.25Y, LA Sun 185.89°, last Perihelion 2012-08-07

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: 2459486.617197671439
Time: 2021-09-29 02:48:45.878812 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK001L and UK003G
 Convergence angle = 14.23375 deg
 R.A. =  72.07047  Dec = +31.20076 deg
Intersection 2 - Stations: UK001L and UK003R
 Convergence angle = 24.17651 deg
 R.A. =  71.61600  Dec = +34.29699 deg
Intersection 3 - Stations: UK001L and UK003T
 Convergence angle = 34.63604 deg
 R.A. =  70.67716  Dec = +40.02480 deg
Intersection 4 - Stations: UK001L and UK003X
 Convergence angle = 23.57125 deg
 R.A. =  71.45186  Dec = +35.36229 deg
Intersection 5 - Stations: UK003G and UK003R
 Convergence angle = 9.99216 deg
 R.A. =  73.26874  Dec = +38.51552 deg
Intersection 6 - Stations: UK003G and UK003T
 Convergence angle = 48.74179 deg
 R.A. =  73.15128  Dec = +37.85592 deg
Intersection 7 - Stations: UK003G and UK003X
 Convergence angle = 9.43001 deg
 R.A. =  73.80689  Dec = +41.38671 deg
Intersection 8 - Stations: UK003R and UK003T
 Convergence angle = 58.73336 deg
 R.A. =  73.03922  Dec = +37.95819 deg
Intersection 9 - Stations: UK003R and UK003X
 Convergence angle = 0.74509 deg
 R.A. =  61.90763  Dec =  +0.30200 deg
Intersection 10 - Stations: UK003T and UK003X
 Convergence angle = 58.15570 deg
 R.A. =  72.57816  Dec = +38.37488 deg

Best intersection: Stations UK003R and UK003T with Qconv = 58.73 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   2592354.29 +/- 66.84 m
 Y =   2916008.94 +/- 81.39 m
 Z =   5168027.46 +/- 144.21 m
 Vx =    15376.22 +/- 283.71 m/s
 Vy =    48478.16 +/- 463.72 m/s
 Vz =    40452.30 +/- 440.80 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+4.706962e+03, +3.856862e+03, +8.980770e+03, +1.700970e+04, -1.669570e+04, +1.916409e+04
+3.856862e+03, +7.127986e+03, +8.695579e+03, +9.103735e+03, -8.716511e+03, +8.968247e+03
+8.980770e+03, +8.695579e+03, +2.234682e+04, +3.002225e+04, -3.810195e+04, +5.550590e+04
+1.700970e+04, +9.103735e+03, +3.002225e+04, +7.428300e+04, -7.284503e+04, +8.205671e+04
-1.669570e+04, -8.716511e+03, -3.810195e+04, -7.284503e+04, +9.086780e+04, -1.275526e+05
+1.916409e+04, +8.968247e+03, +5.550590e+04, +8.205671e+04, -1.275526e+05, +2.066476e+05

Timing offsets (from input data):
    UK001L: -0.001615 s
    UK003G: -0.001687 s
    UK003R: -0.001715 s
    UK003T: 0.000000 s
    UK003X: -0.001655 s

Reference point on the trajectory:
  Time: 2021-09-29 02:48:45.878812 UTC
  Lon     = +-1.919225 +/- 0.0006 deg
  Lat     = +53.129930 +/- 0.0004 deg
  Lat geo = +52.948198 +/- 0.0004 deg
  Ht      =  110943.44 +/- 166.81 m

  JD dynamic   = 2459486.617998412345 
  LST apparent = 48.3626593807 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  72.40210 +/- 0.3860 deg
  Dec       = +38.49851 +/- 0.4137 deg
  Azimuth   = 121.88073 +/- 0.4656 deg
  Elevation = +67.94780 +/- 0.4811 deg
  Vavg      =  63.39081 +/- 0.2824 km/s
  Vinit     =  64.98422 +/- 0.1240 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  72.69416 +/- 0.3860 deg
  Dec       = +38.43462 +/- 0.4137 deg
  Azimuth   = 121.53131 +/- 0.4656 deg
  Elevation = +67.75027 +/- 0.4811 deg
  Vavg      =  63.48208 +/- 0.2824 km/s
  Vinit     =  65.07549 +/- 0.1240 km/s
Radiant (geocentric, J2000):
  R.A.   =  72.16989 +/- 0.3888 deg
  Dec    = +38.33771 +/- 0.4170 deg
  Vg     =  64.03000 +/- 0.1258 km/s
  Vinf   =  64.98422 +/- 0.1240 km/s
  Zc     =  21.95673 +/- 0.4807 deg
  Zg     =  22.12115 +/- 0.4848 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  75.54683 +/- 0.2690 deg
  Bg     = +15.79034 +/- 0.4453 deg
  Vh     =  39.62048 +/- 0.2683 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  57.89914 +/- 0.4654 deg
  Bh     = +26.09258 +/- 0.6270 deg
  Vh_x   = -18.90897 +/- 0.2664 km/s
  Vh_y   = -30.14247 +/- 0.1233 km/s
  Vh_z   = -17.42599 +/- 0.5121 km/s
Orbit:
  La Sun = 185.891223 +/- 0.0000 deg
  a      =   4.408068 +/- 0.7697 AU
  e      =   0.848676 +/- 0.0158
  i      = 148.142429 +/- 0.8381 deg
  peri   = 254.209771 +/- 0.8706 deg
  node   = 185.891647 +/- 0.0000 deg
  Pi     =  80.101419 +/- 0.8706 deg
  q      =   0.667049 +/- 0.0049 AU
  f      = 285.788737 +/- 0.8707 deg
  M      = 355.682061 +/- 0.6460 deg
  Q      =   8.149088 +/- 1.5379 AU
  n      =   0.106496 +/- 0.0153 deg/day
  T      =   9.254929 +/- 2.7793 years
  Last perihelion JD = 2456146.742020 (2012-08-07 05:48:30.520054) +/- 1015.5750 days
  Tj     =   0.353724 +/- 0.1231
Shower association:
  IAU No.  =  208
  IAU code =  SPE

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +2.653303e-04, +3.131992e-05, -1.657766e+01, +1.111636e-08, -1.899569e-04, -2.445717e-04
q   , +3.131992e-05, +2.623333e-05, -1.723129e+00, +1.380530e-09, -7.306693e-05, -2.946882e-05
Tp  , -1.657766e+01, -1.723129e+00, +1.072914e+06, -6.891231e-04, +1.131414e+01, +1.523804e+01
node, +1.111636e-08, +1.380530e-09, -6.891231e-04, +4.682969e-13, -8.116235e-09, -1.029075e-08
peri, -1.899569e-04, -7.306693e-05, +1.131414e+01, -8.116235e-09, +2.498352e-04, +1.764742e-04
i   , -2.445717e-04, -2.946882e-05, +1.523804e+01, -1.029075e-08, +1.764742e-04, +2.263087e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.172653
 a2 = 29.542158

Mean time residuals from time vs. length:
  Station with reference time: UK003T
  Avg. res. = 3.130e-06 s
  Stddev    = 1.77e-03 s

Begin point on the trajectory:
  Lon =    -1.919870 +/- 0.0003 deg
  Lat =    53.130171 +/- 0.0003 deg
  Ht  = 110815.82 +/- 176.34 m
End point on the trajectory:
  Lon =    -2.005413 +/- 0.0004 deg
  Lat =    53.161674 +/- 0.0003 deg
  Ht  = 94173.85 +/- 144.02 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
    UK001L,   False,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,   107493.83,    96372.81,          0.026530,     29.66,     78.19,              70.58, 0.8894,    True,    True, {"ff_name": "FF_UK001L_20210929_024841_600_0737280.fits"}
    UK003G,   False,    -1.802002,    51.351948,  130.00,  71.360847,   0.000001,   104832.50,    97010.05,          0.018454,     17.60,     70.62,              74.38, 0.9275,    True,    True, {"ff_name": "FF_UK003G_20210929_024842_225_0756224.fits"}
    UK003R,   False,    -2.379340,    51.361330,  169.00,   0.011336,  43.830281,   104606.76,    97381.09,          0.028705,     32.55,    108.83,              70.89, 0.8928,    True,    True, {"ff_name": "FF_UK003R_20210929_024841_512_0359680.fits"}
    UK003T,   False,    -1.740490,    53.069201,  240.00,   0.000000,   0.000000,   110815.82,    94173.85,          0.023908,     33.21,     26.76,              30.06, 0.2509,    True,    True, {"ff_name": "FF_UK003T_20210929_024837_651_0750848.fits"}
    UK003X,   False,    -2.362458,    51.684814,  132.00,   0.000000,   0.000000,   108365.22,    96936.43,          0.020356,     19.48,     66.76,              65.92, 0.8335,    True,    True, {"ff_name": "FF_UK003X_20210929_024837_570_0751872.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,     UK001L,       0,  0.044728, 2459486.617198048159, 271.81574,  69.67249,              343.13647,  35.48738,       343.18379,       35.47701,    271.81574,     +69.67249,     271.70539,      +69.68344,  2591473.61,  2913232.32,  5165710.53,      53.136450,       -1.936799,  107493.83,  182157.22,       0.00,             3722.01,   456.64,      0.00,           61417.97,    118.62,    -45.00,         143.65,  +4.06,  +2.76
  1,     UK001L,       0,  0.085304, 2459486.617198517546, 271.23848,  69.04076,              342.95592,  34.84031,       342.97006,       34.83721,    271.23848,     +69.04076,     271.20642,      +69.04395,  2590948.89,  2911578.00,  5164330.10,      53.140337,       -1.947369,  105438.66,  181446.27,    2217.59,             5939.60,    37.43,  54652.79,           61417.97,     35.57,    -13.48,          43.24,  +1.56,  +0.27
  2,     UK001L,       0,  0.125948, 2459486.617198988330, 270.74526,  68.31230,              342.70124,  34.12008,       342.73279,       34.11318,    270.74526,     +68.31230,     270.67511,      +68.31927,  2590360.22,  2909722.04,  5162781.40,      53.144700,       -1.959217,  103133.10,  180677.48,    4705.48,             8427.50,  -115.89,  61211.82,           61417.97,     79.64,    -30.20,          97.24,  +1.06,  -0.22
  3,     UK001L,       0,  0.166676, 2459486.617199459579, 270.17667,  67.49239,              342.44064,  33.30093,       342.46999,       33.29451,    270.17667,     +67.49239,     270.11314,      +67.49871,  2589700.83,  2907643.12,  5161046.66,      53.149589,       -1.972481,  100550.72,  179853.08,    7492.24,            11214.25,    24.19,  68423.63,           61417.97,     74.44,    -28.23,          91.31,  +0.99,  -0.28
  4,     UK001L,       0,  0.207400, 2459486.617199930828, 269.59132,  66.69274,              342.21998,  32.49037,       342.21690,       32.49105,    269.59132,     +66.69274,     269.59873,      +66.69209,  2589059.81,  2905622.09,  5159360.22,      53.154345,       -1.985393,   98040.41,  179089.75,   10201.40,            13923.41,    86.93,  66524.74,           63135.85,     -7.85,      2.98,           9.67,  +1.26,  -0.01
  5,     UK001L,       0,  0.247876, 2459486.617200399283, 269.35429,  66.14303,              342.01077,  31.96137,       342.04874,       31.95307,    269.35429,     +66.14303,     269.27534,      +66.15089,  2588633.96,  2904279.49,  5158239.90,      53.157505,       -1.994034,   96372.81,  178604.63,   12001.14,            15723.15,  -743.64,  44464.35,           60971.70,     96.94,    -36.79,         119.75,  +3.45,  +2.19
  0,     UK003G,       0,  0.101807, 2459486.617198809516, 234.62299,  65.17356,              357.11912,  26.62197,       357.14206,       26.61508,    234.62299,     +65.17356,     234.57347,      +65.16821,  2590794.13,  2911090.06,  5163922.93,      53.141484,       -1.950543,  104832.50,  226646.78,       0.00,             6593.68,  -380.91,      0.00,           71394.21,     83.06,     20.71,          77.91,  +2.29,  +0.51
  1,     UK003G,       0,  0.142307, 2459486.617199278437, 234.86990,  64.58578,              356.95262,  26.04387,       356.92786,       26.05131,    234.86990,     +64.58578,     234.92350,      +64.59147,  2590220.60,  2909281.84,  5162414.08,      53.145735,       -1.962093,  102586.28,  226048.54,    2423.89,             9017.57,  -588.89,  59849.04,           71394.21,    -89.78,    -22.38,          84.43,  +2.18,  +0.41
  2,     UK003G,       0,  0.183031, 2459486.617199749686, 235.39067,  63.71448,              356.62411,  25.19359,       356.60936,       25.19802,    235.39067,     +63.71448,     235.42228,      +63.71778,  2589358.67,  2906564.35,  5160146.48,      53.152127,       -1.979385,   99210.77,  225195.39,    6066.65,            12660.33,   407.46,  89449.97,           71394.21,    -53.62,    -13.36,          50.61,  +1.07,  -0.69
  3,     UK003G,       0,  0.223495, 2459486.617200218141, 235.76045,  63.14642,              356.38912,  24.64166,       356.40175,       24.63787,    235.76045,     +63.14642,     235.73533,      +63.14364,  2588796.69,  2904792.53,  5158668.00,      53.156297,       -1.990731,   97010.05,  224669.48,    8441.74,            15035.42,   153.03,  58696.37,           71394.21,     46.00,     11.47,          43.52,  +2.30,  +0.54
  0,     UK003R,       0,  0.101207, 2459486.617198789027, 210.63855,  64.29127,                8.26591,  26.43080,         8.21643,       26.44804,    210.63855,     +64.29127,     210.73073,      +64.31728,  2590736.49,  2910908.34,  5163771.30,      53.141911,       -1.951679,  104606.76,  227313.92,       0.00,             6837.28,   -98.36,      0.00,           64174.09,   -180.70,    -54.07,         171.15,  +3.28,  +1.50
  1,     UK003R,       0,  0.141731, 2459486.617199258413, 211.52708,  63.75794,                7.96088,  25.83007,         7.94794,       25.83458,    211.52708,     +63.75794,     211.55149,      +63.76463,  2590089.44,  2908868.33,  5162069.02,      53.146708,       -1.964690,  102072.62,  226486.11,    2734.61,             9571.88,     2.83,  67481.16,           64174.09,    -47.29,    -14.13,          44.95,  +2.34,  +0.56
  2,     UK003R,       0,  0.182243, 2459486.617199727334, 212.27390,  63.22147,                7.71165,  25.23987,         7.69313,       25.24632,    212.27390,     +63.22147,     212.30853,      +63.23091,  2589473.78,  2906927.28,  5160449.33,      53.151273,       -1.977089,   99661.56,  225726.40,    5336.55,            12173.82,   -27.87,  64226.43,           64174.09,    -67.77,    -20.25,          64.63,  +2.47,  +0.70
  3,     UK003R,       0,  0.222727, 2459486.617200195789, 212.95895,  62.70705,                7.47694,  24.67747,         7.45266,       24.68590,    212.95895,     +62.70705,     213.00395,      +62.71925,  2588891.44,  2905091.28,  5158917.29,      53.155594,       -1.988837,   97381.09,  225033.14,    7797.68,            14634.96,  -197.56,  60792.80,           64174.09,    -88.86,    -26.56,          85.01,  +2.67,  +0.91
  0,     UK003T,       0,  0.000000, 2459486.617197671439,  37.20065,  56.13016,              299.53685,  82.76374,       299.52669,       82.76370,     37.20065,     +56.13016,      37.19978,      +56.12898,  2592321.71,  2915906.22,  5167941.75,      53.130171,       -1.919870,  110815.82,  111448.71,       0.00,              137.70,  -221.08,      0.00,           66317.46,     -1.56,      1.94,           4.61,  +1.99,  +1.75
  1,     UK003T,       0,  0.040424, 2459486.617198139429,  35.99031,  56.41088,              299.80217,  82.03626,       299.68047,       82.03575,     35.99031,     +56.41088,      35.97945,      +56.39515,  2591653.74,  2913800.25,  5166184.44,      53.135116,       -1.933263,  108199.39,  108993.51,    2823.02,             2960.71,   -24.99,  69835.22,           66317.46,    -20.13,     24.99,          60.73,  +1.34,  +1.15
  2,     UK003T,       0,  0.080836, 2459486.617198606953,  34.80350,  56.65763,              299.93314,  81.33711,       299.80233,       81.33656,     34.80350,     +56.65763,      34.79145,      +56.63913,  2591039.60,  2911863.98,  5164568.73,      53.139665,       -1.945602,  105793.92,  106752.47,    5418.56,             5556.25,   -55.59,  64226.91,           66317.46,    -23.03,     28.61,          70.96,  +1.05,  +0.91
  3,     UK003T,       0,  0.121280, 2459486.617199074943,  33.52126,  56.90754,              300.04814,  80.59177,       299.91287,       80.59120,     33.52126,     +56.90754,      33.50849,      +56.88664,  2590411.96,  2909885.15,  5162917.51,      53.144317,       -1.958221,  103335.72,  104479.27,    8071.15,             8208.84,   -31.22,  65586.71,           66317.46,    -25.30,     31.42,          79.63,  +0.90,  +0.80
  4,     UK003T,       0,  0.161740, 2459486.617199543398,  32.17797,  57.16437,              300.21694,  79.81761,       300.01064,       79.81673,     32.17797,     +57.16437,      32.15784,      +57.12968,  2589787.45,  2907916.20,  5161274.53,      53.148947,       -1.970790,  100889.93,  102235.73,   10710.50,            10848.19,   -21.14,  65233.55,           65957.72,    -40.84,     50.69,         131.33,  +0.85,  +0.80
  5,     UK003T,       0,  0.202260, 2459486.617200012319,  30.64606,  57.42784,              300.33918,  78.94931,       300.10542,       78.94831,     30.64606,     +57.42784,      30.62293,      +57.38492,  2589117.90,  2905805.27,  5159513.07,      53.153914,       -1.984267,   98267.92,   99851.99,   13540.17,            13677.87,   175.38,  69834.06,           66410.01,    -49.01,     60.82,         161.35,  +0.84,  +0.84
  6,     UK003T,       0,  0.242772, 2459486.617200481240,  29.20110,  57.59266,              300.13757,  78.15687,       300.17765,       78.15705,     29.20110,     +57.59266,      29.20620,      +57.60059,  2588534.90,  2903967.18,  5157979.29,      53.158240,       -1.996035,   95984.94,   97796.13,   16004.10,            16141.79,     6.67,  60819.67,           65971.35,      8.79,    -10.95,          29.62,  +1.32,  +1.37
  7,     UK003T,       0,  0.283168, 2459486.617200948764,  28.02295,  57.76464,              300.22175,  77.50415,       300.22716,       77.50417,     28.02295,     +57.76464,      28.02468,      +57.76577,  2588072.39,  2902508.97,  5156762.50,      53.161674,       -2.005413,   94173.85,   96179.33,   17958.80,            18096.50,  -663.73,  48388.52,           64325.88,      1.23,     -1.53,           4.22,  +4.14,  +4.22
  0,     UK003X,       0,  0.032082, 2459486.617198008113, 203.01858,  69.41683,               10.10487,  32.46746,        10.11050,       32.46550,    203.01858,     +69.41683,     203.00759,      +69.41349,  2591696.08,  2913933.73,  5166295.82,      53.134803,       -1.932377,  108365.22,  197637.23,       0.00,             2781.78,   338.18,      0.00,           62542.28,     17.00,      4.97,          18.48,  +4.72,  +3.24
  1,     UK003X,       0,  0.072546, 2459486.617198476102, 204.27520,  68.93449,                9.77319,  31.87302,         9.81162,       31.85962,    204.27520,     +68.93449,     204.19963,      +68.91211,  2591114.12,  2912098.94,  5164764.79,      53.139113,       -1.944078,  106085.81,  196655.65,    2459.52,             5241.30,   168.18,  60782.81,           62542.28,    116.27,     33.92,         127.03,  +2.23,  +0.76
  2,     UK003X,       0,  0.113022, 2459486.617198944557, 205.36562,  68.42805,                9.49696,  31.27450,         9.52258,       31.26558,    205.36562,     +68.42805,     205.31566,      +68.41339,  2590549.67,  2910319.33,  5163279.81,      53.143296,       -1.955442,  103875.07,  195728.45,    4845.05,             7626.83,   -76.59,  58936.94,           62542.28,     77.54,     22.63,          85.12,  +1.35,  -0.11
  3,     UK003X,       0,  0.153578, 2459486.617199413944, 206.61543,  67.82371,                9.16448,  30.56693,         9.18496,       30.55981,    206.61543,     +67.82371,     206.57592,      +67.81222,  2589886.66,  2908228.99,  5161535.53,      53.148211,       -1.968773,  101278.46,  194671.43,    7647.13,            10428.91,    89.99,  69091.59,           62542.28,     62.03,     18.10,          68.47,  +1.35,  -0.10
  4,     UK003X,       0,  0.194098, 2459486.617199883331, 207.67358,  67.25243,                8.88027,  29.91157,         8.87931,       29.91190,    207.67358,     +67.25243,     207.67624,      +67.25295,  2589284.86,  2906331.63,  5159952.29,      53.152675,       -1.980901,   98921.71,  193742.05,   10190.50,            12972.28,     0.20,  62768.40,           63123.12,     -2.89,     -0.84,           3.21,  +1.56,  +0.12
  5,     UK003X,       0,  0.234538, 2459486.617200351320, 208.53649,  66.76228,                8.64034,  29.35448,         8.62209,       29.36081,    208.53649,     +66.76228,     208.57285,      +66.77219,  2588777.89,  2904733.27,  5158618.55,      53.156437,       -1.991153,   96936.43,  192981.49,   12333.08,            15114.86,  -485.18,  52981.65,           61842.61,    -55.35,    -16.17,          61.63,  +2.16,  +0.73

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.