Orbital Analysis for matched events on 20210810_233405.021_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 60.05° Bg 37.37° Vg 59.56km/s
mass 0.10963g, abs. mag -1.8
Path Details
------------
start -2.64° 48.26° 111.81km
end   -2.91° 48.07° 90.00km

Orbit Details
-------------
Semimajor axis 12.88A.U., eccentricity 0.93, inclination 115.11°, Period 46.25Y, LA Sun 138.25°, last Perihelion 2021-07-22

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: 2459437.482002561446
Time: 2021-08-10 23:34:05.021309 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0021 and UK002D
 Convergence angle = 15.41440 deg
 R.A. =  45.66779  Dec = +56.33487 deg

Best intersection: Stations UK0021 and UK002D with Qconv = 15.41 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   2813689.75 +/- 157.31 m
 Y =  -3289656.69 +/- 190.23 m
 Z =   4819465.59 +/- 153.07 m
 Vx =    23948.16 +/- 763.57 m/s
 Vy =    23287.29 +/- 576.96 m/s
 Vz =    50538.57 +/- 398.20 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+2.602557e+04, -2.747016e+04, -1.744254e+04, +6.893005e+04, -8.234602e+04, -5.542711e+04
-2.747016e+04, +3.803085e+04, +2.879136e+04, -8.797599e+04, +1.078772e+05, +7.150151e+04
-1.744254e+04, +2.879136e+04, +2.467335e+04, -6.479203e+04, +7.898628e+04, +5.323488e+04
+6.893005e+04, -8.797599e+04, -6.479203e+04, +2.398644e+05, -2.871103e+05, -1.956897e+05
-8.234602e+04, +1.078772e+05, +7.898628e+04, -2.871103e+05, +3.498082e+05, +2.351484e+05
-5.542711e+04, +7.150151e+04, +5.323488e+04, -1.956897e+05, +2.351484e+05, +1.625528e+05

Timing offsets (from input data):
    UK0021: -0.000568 s
    UK002D: 0.000000 s

Reference point on the trajectory:
  Time: 2021-08-10 23:34:05.021309 UTC
  Lon     = +-2.641167 +/- 0.0008 deg
  Lat     = +48.257921 +/- 0.0024 deg
  Lat geo = +48.069969 +/- 0.0024 deg
  Ht      =  111787.82 +/- 83.55 m

  JD dynamic   = 2459437.482803302351 
  LST apparent = 310.5408373837 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  44.19843 +/- 1.2762 deg
  Dec       = +56.53705 +/- 0.1615 deg
  Azimuth   =  43.41140 +/- 0.6507 deg
  Elevation = +36.80192 +/- 0.4964 deg
  Vavg      =  60.75646 +/- 0.2931 km/s
  Vinit     =  60.58019 +/- 0.3643 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  44.16421 +/- 1.2762 deg
  Dec       = +56.28920 +/- 0.1615 deg
  Azimuth   =  43.68105 +/- 0.6507 deg
  Elevation = +36.67906 +/- 0.4964 deg
  Vavg      =  60.93073 +/- 0.2931 km/s
  Vinit     =  60.75446 +/- 0.3643 km/s
Radiant (geocentric, J2000):
  R.A.   =  44.52952 +/- 1.2686 deg
  Dec    = +56.17670 +/- 0.1593 deg
  Vg     =  59.55588 +/- 0.3705 km/s
  Vinf   =  60.58019 +/- 0.3643 km/s
  Zc     =  53.33473 +/- 0.4978 deg
  Zg     =  53.82543 +/- 0.4972 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  60.04591 +/- 0.8971 deg
  Bg     = +37.36937 +/- 0.1220 deg
  Vh     =  41.00756 +/- 0.3897 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  77.23098 +/- 1.7602 deg
  Bh     = +61.82451 +/- 0.6116 deg
  Vh_x   =  -4.27957 +/- 0.4682 km/s
  Vh_y   = -18.88384 +/- 0.6837 km/s
  Vh_z   = -36.14839 +/- 0.1423 km/s
Orbit:
  La Sun = 138.251384 +/- nan deg
  a      =  12.884675 +/- 22.4217 AU
  e      =   0.925614 +/- 0.0350
  i      = 115.106463 +/- 0.1909 deg
  peri   = 152.469693 +/- 1.5702 deg
  node   = 138.250050 +/- 0.0000 deg
  Pi     = 290.719743 +/- 1.5702 deg
  q      =   0.958434 +/- 0.0074 AU
  f      =  27.526238 +/- 1.5701 deg
  M      =   0.417909 +/- 0.2532 deg
  Q      =  24.810916 +/- 44.8494 AU
  n      =   0.021311 +/- 0.0136 deg/day
  T      =  46.249904 +/- 214.2281 years
  Last perihelion JD = 2459417.872336 (2021-07-22 08:56:09.859627) +/- 0.8102 days
  Tj     =  -0.101437 +/- 0.1939
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +1.285275e-03, -2.689167e-04, -2.902441e-02, -8.725186e-09, -9.896346e-04, +1.110637e-04
q   , -2.689167e-04, +5.759375e-05, +6.261593e-03, +1.889807e-09, +2.123880e-04, -2.405565e-05
Tp  , -2.902441e-02, +6.261593e-03, +6.852161e-01, +2.057372e-07, +2.316154e-02, -2.619052e-03
node, -8.725186e-09, +1.889807e-09, +2.057372e-07, +7.242272e-14, +6.967780e-09, -9.219668e-10
peri, -9.896346e-04, +2.123880e-04, +2.316154e-02, +6.967780e-09, +7.844332e-04, -8.869758e-05
i   , +1.110637e-04, -2.405565e-05, -2.619052e-03, -9.219668e-10, -8.869758e-05, +1.173699e-05

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

Mean time residuals from time vs. length:
  Station with reference time: UK002D
  Avg. res. = 4.977e-06 s
  Stddev    = 2.23e-03 s

Begin point on the trajectory:
  Lon =    -2.640861 +/- 0.0002 deg
  Lat =    48.258136 +/- 0.0023 deg
  Ht  = 111812.97 +/- 65.61 m
End point on the trajectory:
  Lon =    -2.909276 +/- 0.0003 deg
  Lat =    48.069461 +/- 0.0025 deg
  Ht  = 90001.08 +/- 52.48 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
    UK0021,   False,    -3.515726,    50.691998,   17.00,   0.532582,   8.845717,   109312.71,    94599.73,          0.007449,     39.78,      1.50,             100.65, 1.0000,    True,    True, {"ff_name": "FF_UK0021_20210810_233355_298_0288768.fits"}
    UK002D,   False,    -1.801980,    51.351940,  129.00,   0.000000,   0.000000,   111812.97,    90001.08,          0.015350,     99.09,     23.38,             116.24, 1.0000,    True,    True, {"ff_name": "FF_UK002D_20210810_233403_641_0293888.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,     UK0021,       0,  0.067280, 2459437.482003346551, 322.50930, -18.48624,              167.04400,  19.90317,       167.04802,       19.90662,    322.50930,     -18.48624,     322.50509,      -18.48339,  2812055.87, -3291245.48,  4816017.56,      48.236661,       -2.671553,  109312.71,  302640.17,       0.00,             4133.12,  -133.78,      0.00,           59908.20,     -1.03,    -27.05,          18.45,  +1.22,  -1.18
  1,     UK0021,       0,  0.107716, 2459437.482003814541, 322.19289, -18.90995,              167.42539,  19.52840,       167.42042,       19.52415,    322.19289,     -18.90995,     322.19890,      -18.91347,  2810953.79, -3292317.14,  4813691.82,      48.222307,       -2.692025,  107644.15,  303176.77,    2787.85,             6920.98,   204.46,  68944.86,           59908.20,      1.27,     33.47,          22.79,  +0.92,  -1.49
  2,     UK0021,       0,  0.148088, 2459437.482004282065, 321.94567, -19.27817,              167.72672,  19.19773,       167.73218,       19.20239,    321.94567,     -19.27817,     321.94018,      -19.27429,  2810025.19, -3293220.12,  4811732.16,      48.210205,       -2.709300,  106238.80,  303647.75,    5136.88,             9270.00,   107.73,  58184.42,           59908.20,     -1.40,    -36.81,          25.03,  +0.42,  -1.99
  3,     UK0021,       0,  0.188420, 2459437.482004748657, 321.69778, -19.59899,              168.01945,  18.91310,       168.01494,       18.90925,    321.69778,     -19.59899,     321.70363,      -19.60221,  2809177.91, -3294044.02,  4809944.11,      48.199155,       -2.725076,  104956.98,  304092.57,    7280.20,            11413.32,  -192.26,  53142.00,           59908.20,      1.15,     30.51,          20.71,  +0.92,  -1.50
  4,     UK0021,       0,  0.228808, 2459437.482005216181, 321.42960, -19.98114,              168.33903,  18.56940,       168.33989,       18.57014,    321.42960,     -19.98114,     321.42960,      -19.98053,  2808196.20, -3294998.64,  4807872.37,      48.186344,       -2.743329,  103472.35,  304626.48,    9763.58,            13896.70,  -155.60,  61488.04,           59490.61,     -0.22,     -5.82,           3.94,  +0.30,  -2.12
  5,     UK0021,       1,  0.269200, 2459437.482005683705, 321.10375, -20.35047,              168.71074,  18.24448,       168.67719,       18.21598,    321.10375,     -20.35047,     321.14260,      -20.37451,  2807168.92, -3295997.57,  4805704.48,      48.172929,       -2.762420,  101919.46,  305206.01,   12362.21,            16495.33,    -3.92,  64335.30,           60063.65,      8.43,    227.59,         153.91,  +0.21,  -2.21
  6,     UK0021,       0,  0.309628, 2459437.482006151695, 320.85386, -20.78361,              169.01423,  17.84564,       169.02174,       17.85202,    320.85386,     -20.78361,     320.84669,      -20.77821,  2806110.86, -3297026.43,  4803471.62,      48.159102,       -2.782077,  100320.71,  305825.03,   15038.73,            19171.85,   223.46,  66204.63,           60927.16,     -1.94,    -51.10,          34.49,  +0.07,  -2.36
  7,     UK0021,       0,  0.349968, 2459437.482006618753, 320.59522, -21.11165,              169.30962,  17.55109,       169.30737,       17.54917,    320.59522,     -21.11165,     320.59924,      -21.11328,  2805228.39, -3297884.55,  4801609.31,      48.147561,       -2.798499,   98987.79,  306357.98,   17271.06,            21404.18,    11.99,  55337.90,           60821.49,      0.58,     15.39,          10.37,  -0.03,  -2.46
  8,     UK0021,       0,  0.390332, 2459437.482007085811, 320.33144, -21.46871,              169.61170,  17.22737,       169.61032,       17.22620,    320.33144,     -21.46871,     320.33464,      -21.46971,  2804285.17, -3298801.74,  4799618.80,      48.135219,       -2.816039,   97563.65,  306944.79,   19657.07,            23790.19,   -47.26,  59112.34,           60658.29,      0.36,      9.45,           6.36,  -0.20,  -2.64
  9,     UK0021,       0,  0.430688, 2459437.482007552870, 320.05865, -21.80807,              169.91801,  16.92120,       169.90519,       16.91037,    320.05865,     -21.80807,     320.07496,      -21.81736,  2803360.55, -3299700.84,  4797667.55,      48.123112,       -2.833236,   96168.14,  307536.96,   21996.02,            26129.14,  -153.09,  57957.86,           60428.00,      3.28,     87.76,          58.90,  -0.38,  -2.82
 10,     UK0021,       0,  0.471088, 2459437.482008020394, 319.77575, -22.20276,              170.23851,  16.56014,       170.23388,       16.55623,    319.77575,     -22.20276,     319.78298,      -22.20613,  2802320.95, -3300711.76,  4795473.65,      48.109490,       -2.852550,   94599.73,  308222.97,   24625.83,            28758.95,    29.29,  65094.38,           60514.58,      1.20,     31.83,          21.32,  -0.56,  -3.00
  0,     UK002D,       0,  0.000000, 2459437.482002561446, 300.71287, -22.03745,              190.28275,  16.01338,       190.27475,       16.00902,    300.71287,     -22.03745,     300.72053,      -22.04270,  2813706.35, -3289640.55,  4819500.62,      48.258136,       -2.640861,  111812.97,  369650.50,       0.00,               41.99,  -149.10,      0.00,           63042.27,    -13.07,     55.48,          31.80,  +3.15,  +0.31
  1,     UK002D,       0,  0.040256, 2459437.482003027573, 300.47651, -22.33708,              190.47073,  15.68938,       190.46649,       15.68707,    300.47651,     -22.33708,     300.48075,      -22.33987,  2812656.66, -3290661.27,  4817285.43,      48.244481,       -2.660369,  110222.64,  370807.94,    2655.33,             2613.34,   -16.46,  65961.05,           63042.27,     -6.97,     29.60,          16.91,  +1.95,  -0.90
  2,     UK002D,       0,  0.080496, 2459437.482003493235, 300.23661, -22.62051,              190.66257,  15.38066,       190.65183,       15.37481,    300.23661,     -22.62051,     300.24729,      -22.62761,  2811632.76, -3291656.91,  4815124.66,      48.231152,       -2.679400,  108672.03,  371951.87,    5245.42,             5203.44,   135.88,  64366.16,           63042.27,    -17.72,     75.17,          42.83,  +1.57,  -1.28
  3,     UK002D,       0,  0.120724, 2459437.482003958896, 300.03427, -22.88578,              190.81972,  15.09396,       190.81853,       15.09331,    300.03427,     -22.88578,     300.03592,      -22.88657,  2810704.76, -3292559.30,  4813166.28,      48.219062,       -2.696664,  107267.21,  373001.43,    7592.92,             7550.94,    46.36,  58354.89,           63042.27,     -1.96,      8.34,           4.74,  +1.70,  -1.16
  4,     UK002D,       0,  0.160936, 2459437.482004424091, 299.81231, -23.13798,              190.99591,  14.81761,       190.98484,       14.81159,    299.81231,     -23.13798,     299.82367,      -23.14534,  2809771.11, -3293467.19,  4811195.96,      48.206892,       -2.714032,  105854.36,  374069.35,    9954.72,             9912.74,   -27.88,  58733.75,           61756.69,    -18.39,     78.01,          44.19,  +1.62,  -1.24
  5,     UK002D,       0,  0.201180, 2459437.482004889753, 299.58803, -23.42250,              191.16861,  14.50862,       191.16434,       14.50629,    299.58803,     -23.42250,     299.59300,      -23.42534,  2808753.67, -3294456.55,  4809048.83,      48.193620,       -2.732942,  104315.35,  375246.46,   12528.47,            12486.49,   107.88,  63953.63,           61703.12,     -7.12,     30.23,          17.07,  +1.38,  -1.49
  6,     UK002D,       0,  0.241384, 2459437.482005355414, 299.41663, -23.66391,              191.29631,  14.24849,       191.31109,       14.25653,    299.41663,     -23.66391,     299.40332,      -23.65402,  2807916.91, -3295270.22,  4807282.99,      48.182697,       -2.748523,  103050.09,  376225.43,   14645.18,            14603.19,  -210.99,  52649.08,           60714.67,     24.70,   -105.00,          59.13,  +1.16,  -1.72
  7,     UK002D,       0,  0.281616, 2459437.482005821075, 299.17295, -23.94016,              191.48569,  13.94470,       191.49148,       13.94785,    299.17295,     -23.94016,     299.16850,      -23.93628,  2806877.01, -3296281.42,  4805088.45,      48.169115,       -2.767846,  101478.30,  377454.62,   17275.75,            17233.77,   -17.67,  65385.11,           60691.91,      9.72,    -41.27,          23.17,  +1.24,  -1.64
  8,     UK002D,       0,  0.321820, 2459437.482006286271, 298.91708, -24.17753,              191.69042,  13.67748,       191.65905,       13.66045,    298.91708,     -24.17753,     298.94893,      -24.19862,  2805903.07, -3297228.49,  4803033.11,      48.156385,       -2.785953,  100006.80,  378619.02,   19739.48,            19697.49,    10.48,  61280.59,           60720.51,    -53.07,    224.56,         125.70,  +0.79,  -2.10
  9,     UK002D,       0,  0.362068, 2459437.482006751932, 298.73592, -24.47206,              191.81625,  13.36279,       191.82828,       13.36932,    298.73592,     -24.47206,     298.72572,      -24.46395,  2804910.70, -3298193.47,  4800938.89,      48.143405,       -2.804398,   98508.07,  379818.25,   22249.80,            22207.81,    82.57,  62371.27,           60825.16,     20.35,    -86.48,          48.25,  +0.69,  -2.21
 10,     UK002D,       0,  0.402268, 2459437.482007217128, 298.50884, -24.70458,              191.99239,  13.10336,       191.98493,       13.09931,    298.50884,     -24.70458,     298.51780,      -24.70963,  2803985.01, -3299093.61,  4798985.37,      48.131290,       -2.821614,   97110.58,  380948.65,   24591.46,            24549.48,   -11.09,  58250.43,           60765.29,    -12.69,     53.81,          29.94,  +0.68,  -2.22
 11,     UK002D,       0,  0.442484, 2459437.482007682789, 298.32630, -24.96052,              192.12286,  12.82626,       192.13816,       12.83457,    298.32630,     -24.96052,     298.31320,      -24.95014,  2803072.35, -3299981.09,  4797059.35,      48.119337,       -2.838591,   95733.27,  382074.03,   26900.17,            26858.19,  -138.67,  57407.73,           60601.65,     26.09,   -110.84,          61.47,  +0.82,  -2.09
 12,     UK002D,       0,  0.482684, 2459437.482008147985, 298.05736, -25.19692,              192.33448,  12.55682,       192.30693,       12.54188,    298.05736,     -25.19692,     298.08634,      -25.21565,  2802057.31, -3300968.12,  4794917.28,      48.106034,       -2.857451,   94202.08,  383337.91,   29467.86,            29425.87,    -6.31,  63872.78,           60610.51,    -47.34,    200.29,         110.74,  +0.55,  -2.37
 13,     UK002D,       0,  0.522896, 2459437.482008613646, 297.87312, -25.45066,              192.46457,  12.28118,       192.45884,       12.27807,    297.87312,     -25.45066,     297.88092,      -25.45457,  2801136.97, -3301863.07,  4792975.05,      48.093965,       -2.874567,   92814.29,  384495.41,   31795.99,            31754.00,  -114.23,  57896.42,           60538.55,     -9.86,     41.80,          23.04,  +0.56,  -2.36
 14,     UK002D,       0,  0.563120, 2459437.482009078842, 297.64693, -25.71278,              192.63055,  11.99135,       192.62506,       11.98838,    297.64693,     -25.71278,     297.65467,      -25.71654,  2800120.16, -3302851.81,  4790829.25,      48.080621,       -2.893459,   91281.66,  385786.36,   34368.14,            34326.16,    21.15,  63945.73,           60576.96,     -9.49,     40.21,          22.09,  +0.46,  -2.47
 15,     UK002D,       0,  0.603316, 2459437.482009544503, 297.47724, -25.94370,              192.74883,  11.73985,       192.76318,       11.74763,    297.47724,     -25.94370,     297.46565,      -25.93386,  2799270.27, -3303678.25,  4789035.70,      48.069461,       -2.909276,   90001.08,  386875.68,   36518.06,            36476.08,  -264.01,  53485.92,           60446.35,     24.85,   -105.53,          57.80,  +3.68,  +0.74

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.