Orbital Analysis for matched events on 20210810_024517.264_UK

Summary for Event
-----------------
shower ID -1 spo
Lg 256.17° Bg 75.58° Vg 17.50km/s
mass 0.00936g, abs. mag 3.2
Path Details
------------
start -3.78° 50.90° 91.22km
end   -3.69° 50.85° 83.08km

Orbit Details
-------------
Semimajor axis 2.51A.U., eccentricity 0.60, inclination 27.04°, Period 3.97Y, LA Sun 137.42°, last Perihelion 2017-08-30

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: 2459436.614783154335
Time: 2021-08-10 02:45:17.264535 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0020 and UK0024
 Convergence angle = 50.38761 deg
 R.A. = 270.56189  Dec = +55.59056 deg

Best intersection: Stations UK0020 and UK0024 with Qconv = 50.39 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   4079850.47 +/- 16.32 m
 Y =   -260711.32 +/- 35.47 m
 Z =   4997436.78 +/- 47.37 m
 Vx =      115.77 +/- 58.57 m/s
 Vy =   -11913.64 +/- 27.05 m/s
 Vz =    16966.38 +/- 98.97 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+2.863409e+02, -1.739296e+02, +4.220313e+02, +5.711631e+02, -4.506651e+02, +9.015945e+02
-1.739296e+02, +1.305224e+03, -1.581737e+03, +6.111284e+02, +1.986143e+02, +6.400409e+02
+4.220313e+02, -1.581737e+03, +2.344448e+03, -2.917353e+02, -1.385623e+02, +5.954630e+01
+5.711631e+02, +6.111284e+02, -2.917353e+02, +3.621429e+03, -2.385727e+03, +5.432882e+03
-4.506651e+02, +1.986143e+02, -1.385623e+02, -2.385727e+03, +2.863046e+03, -3.664457e+03
+9.015945e+02, +6.400409e+02, +5.954630e+01, +5.432882e+03, -3.664457e+03, +8.511395e+03

Timing offsets (from input data):
    UK0020: 0.000000 s
    UK0024: -0.000459 s

Reference point on the trajectory:
  Time: 2021-08-10 02:45:17.264535 UTC
  Lon     = +-3.784620 +/- 0.0005 deg
  Lat     = +50.900808 +/- 0.0002 deg
  Lat geo = +50.714988 +/- 0.0002 deg
  Ht      =   91234.73 +/- 44.15 m

  JD dynamic   = 2459436.615583895240 
  LST apparent = 356.3436465920 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 270.55676 +/- 0.2801 deg
  Dec       = +54.92253 +/- 0.0956 deg
  Azimuth   = 310.14297 +/- 0.1079 deg
  Elevation = +41.43206 +/- 0.1683 deg
  Vavg      =  20.61864 +/- 0.0870 km/s
  Vinit     =  20.73177 +/- 0.0967 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 270.66478 +/- 0.2801 deg
  Dec       = +55.60047 +/- 0.0956 deg
  Azimuth   = 310.86193 +/- 0.1079 deg
  Elevation = +41.85004 +/- 0.1683 deg
  Vavg      =  20.44923 +/- 0.0870 km/s
  Vinit     =  20.56236 +/- 0.0967 km/s
Radiant (geocentric, J2000):
  R.A.   = 264.40020 +/- 0.3428 deg
  Dec    = +52.40701 +/- 0.1305 deg
  Vg     =  17.50254 +/- 0.1148 km/s
  Vinf   =  20.73177 +/- 0.0967 km/s
  Zc     =  48.68789 +/- 0.1684 deg
  Zg     =  53.06462 +/- 0.2306 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 256.17392 +/- 0.7675 deg
  Bg     = +75.57590 +/- 0.1556 deg
  Vh     =  37.36489 +/- 0.0362 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 231.52307 +/- 0.0879 deg
  Bh     = +26.98042 +/- 0.1871 deg
  Vh_x   =  20.71810 +/- 0.0585 km/s
  Vh_y   =  26.06775 +/- 0.0291 km/s
  Vh_z   = -16.95193 +/- 0.1203 km/s
Orbit:
  La Sun = 137.419261 +/- -0.0000 deg
  a      =   2.505321 +/- 0.0187 AU
  e      =   0.597572 +/- 0.0031
  i      =  27.039703 +/- 0.1897 deg
  peri   = 189.776084 +/- 0.1697 deg
  node   = 137.427292 +/- 0.0001 deg
  Pi     = 327.203375 +/- 0.1697 deg
  q      =   1.008211 +/- 0.0002 AU
  f      = 350.216609 +/- 0.1697 deg
  M      = 358.016771 +/- 0.0212 deg
  Q      =   4.002430 +/- 0.0375 AU
  n      =   0.248548 +/- 0.0029 deg/day
  T      =   3.965479 +/- 0.0440 years
  Last perihelion JD = 2457996.178579 (2017-08-30 16:17:09.260668) +/- 15.9782 days
  Tj     =   3.068309 +/- 0.0161
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +1.075142e-05, -5.743650e-07, -5.477862e-02, -2.207366e-09, +8.156162e-06, +7.799619e-06
q   , -5.743650e-07, +4.342024e-08, +2.886591e-03, +1.888997e-10, -6.380258e-07, -6.667723e-07
Tp  , -5.477862e-02, +2.886591e-03, +2.792565e+02, +1.104074e-05, -4.091693e-02, -3.901699e-02
node, -2.207366e-09, +1.888997e-10, +1.104074e-05, +9.523201e-13, -2.802539e-09, -3.358817e-09
peri, +8.156162e-06, -6.380258e-07, -4.091693e-02, -2.802539e-09, +9.402491e-06, +9.890746e-06
i   , +7.799619e-06, -6.667723e-07, -3.901699e-02, -3.358817e-09, +9.890746e-06, +1.184719e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = -0.812238
 a2 = 8.244412

Mean time residuals from time vs. length:
  Station with reference time: UK0020
  Avg. res. = 3.104e-05 s
  Stddev    = 5.57e-03 s

Begin point on the trajectory:
  Lon =    -3.784401 +/- 0.0001 deg
  Lat =    50.900692 +/- 0.0001 deg
  Ht  = 91216.74 +/- 32.70 m
End point on the trajectory:
  Lon =    -3.688093 +/- 0.0002 deg
  Lat =    50.847900 +/- 0.0001 deg
  Ht  = 83083.36 +/- 47.17 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
    UK0020,   False,    -3.515726,    50.691998,   17.00,   0.000005,  28.786609,    91216.74,    83083.36,          0.015951,     25.70,      2.53,              30.40, 1.0000,    True,    True, {"ff_name": "FF_UK0020_20210810_024512_956_0571392.fits"}
    UK0024,   False,    -2.949770,    50.877440,   82.00,   0.568781,   9.166716,    91131.80,    83500.56,          0.014396,     25.61,      4.43,              28.98, 1.0000,    True,    True, {"ff_name": "FF_UK0024_20210810_024510_127_0574976.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,     UK0020,       0,  0.000000, 2459436.614783154335, 330.70092,  62.78982,              320.81759,  71.56279,       320.89279,       71.55622,    330.70092,     +62.78982,     330.71354,      +62.81381,  4079850.31,  -260695.69,  4997414.53,      50.900692,       -3.784401,   91216.74,   96063.48,       0.00,               27.19,    47.70,      0.00,           20780.72,     -4.05,    -41.18,          88.84,  +4.26,  +4.35
  1,     UK0020,       0,  0.039836, 2459436.614783615340, 331.19303,  62.77702,              321.13211,  71.76535,       321.06959,       71.77086,    331.19303,     +62.77702,     331.18255,      +62.75729,  4079846.19,  -260271.26,  4996810.09,      50.897528,       -3.778635,   90728.03,   95432.37,     738.59,              765.78,   -39.59,  18540.66,           20780.72,      3.31,     33.69,          73.17,  +3.37,  +3.47
  2,     UK0020,       0,  0.079652, 2459436.614784076344, 331.66667,  62.70439,              321.27782,  71.98958,       321.25592,       71.99150,    331.66667,     +62.70439,     331.66320,      +62.69757,  4079842.00,  -259840.52,  4996196.68,      50.894316,       -3.772781,   90232.09,   94793.32,    1488.14,             1515.33,  -115.49,  18825.34,           20780.72,      1.14,     11.59,          25.34,  +6.61,  +6.73
  3,     UK0020,       0,  0.119400, 2459436.614784536418, 332.33801,  62.62956,              321.58045,  72.29291,       321.52744,       72.29758,    332.33801,     +62.62956,     332.32912,      +62.61334,  4079836.31,  -259254.86,  4995362.63,      50.889947,       -3.764760,   89557.84,   93926.06,    2507.28,             2534.48,    79.61,  25640.27,           20780.72,      2.69,     27.38,          60.42,  +3.56,  +3.70
  4,     UK0020,       0,  0.159244, 2459436.614784997422, 332.77715,  62.59308,              321.82556,  72.48433,       321.70245,       72.49522,    332.77715,     +62.59308,     332.75574,      +62.55584,  4079832.66,  -258879.04,  4994827.42,      50.887143,       -3.759673,   89125.20,   93371.83,    3161.27,             3188.47,   -92.44,  16413.77,           20326.64,      6.15,     62.62,         138.99,  +3.03,  +3.18
  5,     UK0020,       0,  0.199020, 2459436.614785457961, 333.33063,  62.48381,              321.96875,  72.75865,       321.94855,       72.76043,    333.33063,     +62.48381,     333.32777,      +62.47780,  4079827.85,  -258383.75,  4994122.07,      50.883447,       -3.752916,   88555.08,   92642.59,    4023.16,             4050.35,   -55.18,  21668.52,           20388.50,      0.99,     10.05,          22.48,  +3.79,  +3.96
  6,     UK0020,       0,  0.238780, 2459436.614785918035, 333.95338,  62.38779,              322.22437,  73.05296,       322.22986,       73.05248,    333.95338,     +62.38779,     333.95539,      +62.38939,  4079822.63,  -257847.22,  4993357.99,      50.879441,       -3.745582,   87937.55,   91854.88,    4956.82,             4984.01,    54.18,  23482.28,           20741.68,     -0.26,     -2.66,           6.01,  +2.56,  +2.74
  7,     UK0020,       0,  0.278580, 2459436.614786378574, 334.50522,  62.32749,              322.53954,  73.29967,       322.47876,       73.30502,    334.50522,     +62.32749,     334.49497,      +62.31001,  4079818.18,  -257388.85,  4992705.21,      50.876018,       -3.739340,   87410.01,   91184.27,    5754.47,             5781.67,    26.71,  20041.60,           20830.57,      2.85,     28.93,          65.76,  +2.66,  +2.86
  8,     UK0020,       0,  0.318324, 2459436.614786838647, 335.13339,  62.20365,              322.75922,  73.61093,       322.79078,       73.60816,    335.13339,     +62.20365,     335.14072,      +62.21255,  4079812.92,  -256848.06,  4991935.07,      50.871979,       -3.731946,   86787.70,   90395.25,    6695.53,             6722.72,   143.80,  23677.88,           21061.61,     -1.44,    -14.64,          33.57,  +2.20,  +2.42
  9,     UK0020,       0,  0.358140, 2459436.614787299652, 335.61743,  62.12878,              323.00343,  73.83896,       323.02952,       73.83667,    335.61743,     +62.12878,     335.62393,      +62.13602,  4079809.00,  -256444.04,  4991359.70,      50.868960,       -3.726465,   86322.77,   89808.04,    7398.59,             7425.78,    21.41,  17657.79,           20993.50,     -1.17,    -11.88,          27.41,  +2.90,  +3.13
 10,     UK0020,       0,  0.397928, 2459436.614787760191, 336.15824,  62.03614,              323.26661,  74.09860,       323.30962,       74.09483,    336.15824,     +62.03614,     336.16823,      +62.04788,  4079804.63,  -255994.17,  4990719.04,      50.865598,       -3.720342,   85805.14,   89155.83,    8181.44,             8208.64,   -20.61,  19675.63,           20896.45,     -1.89,    -19.16,          44.54,  +2.57,  +2.82
 11,     UK0020,       0,  0.437724, 2459436.614788220730, 336.68664,  61.95709,              323.57531,  74.34509,       323.58803,       74.34397,    336.68664,     +61.95709,     336.69095,      +61.96050,  4079800.46,  -255565.21,  4990108.14,      50.862391,       -3.714511,   85311.59,   88535.86,    8927.91,             8955.10,   -99.19,  18757.34,           20758.17,     -0.55,     -5.55,          12.99,  +2.61,  +2.87
 12,     UK0020,       0,  0.477456, 2459436.614788680337, 337.37256,  61.83665,              323.95072,  74.67501,       323.97520,       74.67287,    337.37256,     +61.83665,     337.37937,      +61.84308,  4079795.06,  -255009.24,  4989316.38,      50.858234,       -3.706904,   84672.01,   87734.58,    9895.39,             9922.58,    44.58,  24350.15,           20792.83,     -1.02,    -10.39,          24.55,  +2.37,  +2.65
 13,     UK0020,       0,  0.517280, 2459436.614789141342, 337.80605,  61.74460,              324.15673,  74.89305,       324.22949,       74.88668,    337.80605,     +61.74460,     337.82259,      +61.76341,  4079791.56,  -254649.94,  4988804.70,      50.855547,       -3.702047,   84258.65,   87219.03,   10520.63,            10547.82,  -155.81,  15699.99,           20668.98,     -2.99,    -30.31,          72.02,  +3.40,  +3.70
 14,     UK0020,       0,  0.557052, 2459436.614789601881, 338.42476,  61.66348,              324.62558,  75.17221,       324.59101,       75.17526,    338.42476,     +61.66348,     338.42022,      +61.65471,  4079786.93,  -254173.26,  4988125.85,      50.851980,       -3.695549,   83710.34,   86536.60,   11350.15,            11377.34,  -150.83,  20856.83,           20593.18,      1.39,     14.06,          33.68,  +3.15,  +3.46
 15,     UK0020,       0,  0.596776, 2459436.614790061489, 339.10789,  61.52300,              325.02350,  75.51164,       325.03293,       75.51081,    339.10789,     +61.52300,     339.11227,      +61.52534,  4079781.63,  -253628.11,  4987349.49,      50.847900,       -3.688093,   83083.36,   85758.95,   12298.80,            12325.99,   -25.72,  23881.20,           20614.87,     -0.37,     -3.72,           9.00,  +4.09,  +4.42
 16,     UK0020,       1,  0.636652, 2459436.614790522959, 339.36513,  61.42720,              325.05155,  75.66727,       325.21497,       75.65300,    339.36513,     +61.42720,     339.40044,      +61.46718,  4079779.37,  -253395.55,  4987018.30,      50.846160,       -3.685008,   82815.78,   85429.04,   12703.49,            12730.68,  -447.74,  10148.59,           20424.05,     -6.29,    -63.68,         154.50,  +6.23,  +6.57
  0,     UK0024,       0,  0.008501, 2459436.614783562720, 309.95122,  41.72098,              272.78903,  56.73288,       272.78849,       56.73189,    309.95122,     +41.72098,     309.95046,      +41.72020,  4079849.60,  -260621.92,  4997309.48,      50.900142,       -3.783518,   91131.80,  108571.91,       0.00,              155.56,    -0.17,      0.00,           21220.30,      0.33,      1.93,           3.73,  +6.60,  +6.42
  1,     UK0024,       0,  0.088397, 2459436.614784487523, 310.41363,  41.42283,              271.99005,  56.86386,       271.98329,       56.85105,    310.41363,     +41.42283,     310.40241,      +41.41278,  4079839.66,  -259599.19,  4995852.99,      50.892516,       -3.769556,   89954.25,  107028.91,    1779.73,             1935.29,   123.17,  22275.59,           21220.30,      4.25,     24.55,          48.01,  +4.29,  +4.14
  2,     UK0024,       0,  0.128357, 2459436.614784949925, 310.59558,  41.30572,              271.67438,  56.91512,       271.66414,       56.89542,    310.59558,     +41.30572,     310.57825,      +41.29032,  4079835.82,  -259203.60,  4995289.62,      50.889565,       -3.764193,   89498.82,  106435.37,    2468.13,             2623.69,   -16.87,  17227.17,           21220.30,      6.49,     37.50,          73.75,  +6.45,  +6.31
  3,     UK0024,       0,  0.168317, 2459436.614785412326, 310.83588,  41.12240,              271.21203,  56.96682,       271.20828,       56.95941,    310.83588,     +41.12240,     310.82994,      +41.11664,  4079830.41,  -258647.61,  4994497.83,      50.885416,       -3.756588,   88858.81,  105600.38,    3435.64,             3591.20,   122.20,  24212.12,           21220.30,      2.41,     13.95,          27.66,  +4.14,  +4.02
  4,     UK0024,       0,  0.208301, 2459436.614785875194, 311.02379,  40.94850,              270.80256,  56.99004,       270.81361,       57.01248,    311.02379,     +40.94850,     311.04521,      +40.96586,  4079825.82,  -258174.73,  4993824.40,      50.881886,       -3.750144,   88314.50,  104892.85,    4258.54,             4414.09,   116.15,  20580.52,           21240.32,     -7.25,    -41.90,          83.63,  +3.94,  +3.84
  5,     UK0024,       0,  0.248225, 2459436.614786337595, 311.24973,  40.84965,              270.47810,  57.07817,       270.46785,       57.05708,    311.24973,     +40.84965,     311.23169,      +40.83337,  4079821.85,  -257766.69,  4993243.31,      50.878840,       -3.744607,   87844.86,  104284.46,    4968.59,             5124.15,    -1.49,  17785.09,           20853.07,      6.77,     39.13,          78.55,  +3.22,  +3.13
  6,     UK0024,       0,  0.288209, 2459436.614786799997, 311.42097,  40.69382,              270.10716,  57.10003,       270.10831,       57.10247,    311.42097,     +40.69382,     311.42449,      +40.69569,  4079817.79,  -257348.40,  4992647.61,      50.875716,       -3.738927,   87363.44,  103661.85,    5696.49,             5852.04,  -102.53,  18204.74,           20452.59,     -0.78,     -4.48,           9.05,  +3.74,  +3.66
  7,     UK0024,       0,  0.328165, 2459436.614787262399, 311.65111,  40.52058,              269.66291,  57.14892,       269.66700,       57.15779,    311.65111,     +40.52058,     311.66066,      +40.52738,  4079812.88,  -256843.15,  4991928.07,      50.871942,       -3.732030,   86782.01,  102910.21,    6575.72,             6731.27,   -51.66,  22004.95,           20380.21,     -2.80,    -16.19,          32.93,  +3.80,  +3.74
  8,     UK0024,       0,  0.368105, 2459436.614787724800, 311.88225,  40.38535,              269.27458,  57.21916,       269.26847,       57.20566,    311.88225,     +40.38535,     311.87165,      +40.37504,  4079808.52,  -256394.33,  4991288.91,      50.868589,       -3.725923,   86265.55,  102244.83,    7356.73,             7512.29,   -98.67,  19554.66,           20294.63,      4.23,     24.45,          50.05,  +3.94,  +3.89
  9,     UK0024,       0,  0.408073, 2459436.614788187668, 312.10190,  40.20259,              268.82126,  57.25503,       268.82261,       57.25813,    312.10190,     +40.20259,     312.10653,      +40.20494,  4079803.72,  -255900.41,  4990585.51,      50.864897,       -3.719185,   85697.25,  101513.73,    8216.23,             8371.79,   -67.77,  21504.84,           20308.94,     -0.96,     -5.56,          11.47,  +4.13,  +4.10
 10,     UK0024,       0,  0.448033, 2459436.614788650069, 312.36299,  39.98450,              268.27957,  57.29632,       268.28940,       57.31961,    312.36299,     +39.98450,     312.38607,      +40.00209,  4079798.08,  -255320.76,  4989760.02,      50.860564,       -3.711248,   85030.40,  100657.08,    9224.93,             9380.48,   112.48,  25242.51,           20524.81,     -7.16,    -41.35,          85.99,  +2.95,  +2.94
 11,     UK0024,       0,  0.487965, 2459436.614789112005, 312.58767,  39.86614,              267.91761,  57.37067,       267.91311,       57.35978,    312.58767,     +39.86614,     312.57998,      +39.85794,  4079794.17,  -254918.48,  4989187.13,      50.857555,       -3.705791,   84567.60,  100066.02,    9924.96,            10080.52,   -15.35,  17530.63,           20545.33,      3.32,     19.19,          40.15,  +4.34,  +4.34
 12,     UK0024,       0,  0.527925, 2459436.614789574407, 312.77163,  39.73353,              267.56579,  57.41088,       267.55978,       57.39598,    312.77163,     +39.73353,     312.76049,      +39.72234,  4079790.55,  -254545.75,  4988656.32,      50.854767,       -3.700747,   84138.79,   99520.00,   10573.58,            10729.14,  -195.17,  16231.84,           20423.55,      4.51,     26.09,          54.87,  +4.42,  +4.43
 13,     UK0024,       0,  0.567881, 2459436.614790037274, 313.03460,  39.52063,              267.02589,  57.45425,       267.02485,       57.45158,    313.03460,     +39.52063,     313.03467,      +39.51864,  4079785.16,  -253990.85,  4987866.08,      50.850615,       -3.693156,   83500.56,   98706.27,   11539.19,            11694.75,   -57.92,  24166.86,           20447.43,      0.80,      4.62,           9.81,  +4.25,  +4.28

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.