Orbital Analysis for matched events on 20210810_235910.850_UK

Summary for Event
-----------------
shower ID -1 spo
Lg 303.64° Bg 61.23° Vg 22.02km/s
mass 0.05515g, abs. mag 0.2
Path Details
------------
start -1.47° 49.41° 91.98km
end   -1.42° 49.42° 81.94km

Orbit Details
-------------
Semimajor axis 3.73A.U., eccentricity 0.75, inclination 31.05°, Period 7.19Y, LA Sun 138.27°, last Perihelion 2014-06-28

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: 2459437.499431142583
Time: 2021-08-10 23:59:10.850719 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002D and UK0038
 Convergence angle = 8.88866 deg
 R.A. = 288.90012  Dec = +44.67634 deg

Best intersection: Stations UK002D and UK0038 with Qconv = 8.89 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3134397.57 +/- 374.97 m
 Y =  -2821711.57 +/- 269.35 m
 Z =   4890599.81 +/- 141.38 m
 Vx =     6947.50 +/- 1457.97 m/s
 Vy =   -17317.87 +/- 287.23 m/s
 Vz =    16130.93 +/- 1260.30 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.453904e+05, -1.038811e+05, -5.382972e+04, +4.798870e+05, -3.411029e+05, -1.810050e+05
-1.038811e+05, +7.497825e+04, +3.864649e+04, -3.449004e+05, +2.474416e+05, +1.313031e+05
-5.382972e+04, +3.864649e+04, +2.063158e+04, -1.755833e+05, +1.249108e+05, +6.884125e+04
+4.798870e+05, -3.449004e+05, -1.755833e+05, +1.832277e+06, -1.298127e+06, -6.844764e+05
-3.411029e+05, +2.474416e+05, +1.249108e+05, -1.298127e+06, +9.295102e+05, +4.861181e+05
-1.810050e+05, +1.313031e+05, +6.884125e+04, -6.844764e+05, +4.861181e+05, +2.694056e+05

Timing offsets (from input data):
    UK000H: 0.000000 s
    UK002D: 0.000000 s
    UK0038: -0.000295 s

Reference point on the trajectory:
  Time: 2021-08-10 23:59:10.850719 UTC
  Lon     = +-1.468296 +/- 0.0008 deg
  Lat     = +49.414714 +/- 0.0039 deg
  Lat geo = +49.227184 +/- 0.0039 deg
  Ht      =   92004.74 +/- 193.32 m

  JD dynamic   = 2459437.500231883489 
  LST apparent = 318.0051759628 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 291.85944 +/- 3.7522 deg
  Dec       = +40.84308 +/- 3.1035 deg
  Azimuth   = 254.85000 +/- 10.0599 deg
  Elevation = +69.79618 +/- 1.3927 deg
  Vavg      =  24.33855 +/- 0.4309 km/s
  Vinit     =  24.66543 +/- 0.5247 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 292.71328 +/- 3.7522 deg
  Dec       = +41.04666 +/- 3.1035 deg
  Azimuth   = 254.28990 +/- 10.0599 deg
  Elevation = +70.44512 +/- 1.3927 deg
  Vavg      =  24.23774 +/- 0.4309 km/s
  Vinit     =  24.56462 +/- 0.5247 km/s
Radiant (geocentric, J2000):
  R.A.   = 290.41653 +/- 4.1529 deg
  Dec    = +40.15969 +/- 3.2044 deg
  Vg     =  22.02138 +/- 0.5951 km/s
  Vinf   =  24.66543 +/- 0.5247 km/s
  Zc     =  20.15559 +/- 1.4232 deg
  Zg     =  21.30896 +/- 1.5833 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 303.64225 +/- 5.8628 deg
  Bg     = +61.23439 +/- 3.7809 deg
  Vh     =  38.88942 +/- 0.2842 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 246.47381 +/- 2.8083 deg
  Bh     = +29.76215 +/- 0.2473 deg
  Vh_x   =  13.47578 +/- 1.2817 km/s
  Vh_y   =  30.95348 +/- 1.0442 km/s
  Vh_z   = -19.30473 +/- 0.1229 km/s
Orbit:
  La Sun = 138.268109 +/- 0.0000 deg
  a      =   3.726016 +/- 0.2512 AU
  e      =   0.751349 +/- 0.0293
  i      =  31.045376 +/- 0.2006 deg
  peri   = 216.893017 +/- 5.3671 deg
  node   = 138.274757 +/- 0.0000 deg
  Pi     = 355.167774 +/- 5.3671 deg
  q      =   0.926479 +/- 0.0187 AU
  f      = 323.099926 +/- 5.3671 deg
  M      = 356.324901 +/- 0.3503 deg
  Q      =   6.525553 +/- 0.5200 AU
  n      =   0.137037 +/- 0.0204 deg/day
  T      =   7.192298 +/- 0.6758 years
  Last perihelion JD = 2456837.285940 (2014-06-28 18:51:45.222103) +/- 243.6465 days
  Tj     =   2.353520 +/- 0.1296
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +8.978083e-04, -5.518020e-04, -7.462749e+00, -1.464029e-08, +2.671227e-03, +6.002837e-05
q   , -5.518020e-04, +3.623034e-04, +4.486042e+00, +8.250312e-09, -1.772400e-03, -3.392994e-05
Tp  , -7.462749e+00, +4.486042e+00, +6.321218e+04, +1.247197e-04, -2.139033e+01, -5.111780e-01
node, -1.464029e-08, +8.250312e-09, +1.247197e-04, +7.816572e-13, -3.837620e-08, -3.192346e-09
peri, +2.671227e-03, -1.772400e-03, -2.139033e+01, -3.837620e-08, +8.826482e-03, +1.579094e-04
i   , +6.002837e-05, -3.392994e-05, -5.111780e-01, -3.192346e-09, +1.579094e-04, +1.303895e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.000308
 a2 = 30.599989

Mean time residuals from time vs. length:
  Station with reference time: UK002D
  Avg. res. = 1.149e-05 s
  Stddev    = 3.39e-03 s

Begin point on the trajectory:
  Lon =    -1.468158 +/- 0.0007 deg
  Lat =    49.414738 +/- 0.0039 deg
  Ht  = 91976.22 +/- 195.71 m
End point on the trajectory:
  Lon =    -1.421464 +/- 0.0007 deg
  Lat =    49.423301 +/- 0.0028 deg
  Ht  = 81935.39 +/- 129.90 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
    UK000H,    True,    -1.778230,    50.857470,   24.00,   0.000000,   0.000000,    88441.93,    82696.64,          0.025676,       nan,       nan,              65.70, 0.0000,    True,    True, {"ff_name": "FF_UK000H_20210810_235904_642_0333312.fits"}
    UK002D,   False,    -1.801980,    51.351940,  129.00,   0.002597,  25.761208,    91976.22,    81935.39,          0.006988,     27.57,      7.72,              71.07, 1.0000,    True,    True, {"ff_name": "FF_UK002D_20210810_235902_986_0331008.fits"}
    UK0038,   False,    -2.379250,    51.361350,  169.00,   0.000000,   0.000000,    87670.71,    83981.43,          0.011696,     46.28,     17.78,              75.17, 1.0000,    True,    True, {"ff_name": "FF_UK0038_20210810_235907_848_0330240.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,     UK000H,       1,  0.157085, 2459437.499432960525, 325.29503, -11.02778,              171.56446,  27.76178,       171.58238,       27.75497,    325.29503,     -11.02778,     325.28025,      -11.03605,  3133328.22, -2819046.05,  4888116.98,      49.417751,       -1.451748,   88441.93,  185393.11,       0.00,             3796.45,  -129.55,      0.00,           24733.36,     17.47,     53.06,          62.15,  +2.90,  +1.56
  1,     UK000H,       1,  0.197265, 2459437.499433425721, 325.43327, -11.33421,              171.44500,  27.44385,       171.43739,       27.44674,    325.43327,     -11.33421,     325.44066,      -11.33069,  3132977.41, -2818171.57,  4887302.44,      49.418748,       -1.446267,   87273.11,  184778.73,    1245.49,             5041.94,   124.89,  30997.82,           24733.36,     -7.40,    -22.51,          26.45,  +2.27,  +0.94
  2,     UK000H,       1,  0.237341, 2459437.499433889519, 325.57953, -11.50504,              171.30292,  27.25997,       171.34407,       27.24433,    325.57953,     -11.50504,     325.54491,      -11.52416,  3132748.28, -2817600.44,  4886770.45,      49.419399,       -1.442744,   86509.72,  184380.32,    2058.94,             5855.39,   -50.15,  20297.63,           24733.36,     40.07,    121.62,         143.24,  +1.48,  +0.15
  3,     UK000H,       1,  0.277481, 2459437.499434354249, 325.69109, -11.74680,              171.20734,  27.00866,       171.23095,       26.99969,    325.69109,     -11.74680,     325.67177,      -11.75780,  3132472.81, -2816913.79,  4886130.86,      49.420182,       -1.438474,   85591.93,  183905.22,    3036.93,             6833.37,   -62.24,  24364.39,           24733.36,     22.95,     69.72,          82.32,  +1.32,  -0.00
  4,     UK000H,       1,  0.317641, 2459437.499434818979, 325.84049, -12.03203,              171.07604,  26.71032,       171.09388,       26.70355,    325.84049,     -12.03203,     325.82629,      -12.04036,  3132141.43, -2816087.76,  4885361.44,      49.421123,       -1.433300,   84487.88,  183339.24,    4213.42,             8009.87,   123.69,  29295.24,           25461.76,     17.32,     52.64,          62.35,  +0.89,  -0.43
  5,     UK000H,       1,  0.357769, 2459437.499435283244, 325.96322, -12.26098,              170.96834,  26.47044,       170.98452,       26.46431,    325.96322,     -12.26098,     325.95061,      -12.26856,  3131875.24, -2815424.22,  4884743.39,      49.421880,       -1.429176,   83601.00,  182888.44,    5158.48,             8954.92,    78.97,  23550.97,           25396.84,     15.69,     47.70,          56.63,  +1.99,  +0.68
  6,     UK000H,       1,  0.397881, 2459437.499435747508, 326.11264, -12.48301,              170.83164,  26.23467,       170.87283,       26.21904,    326.11264,     -12.48301,     326.07830,      -12.50235,  3131603.80, -2814747.61,  4884113.15,      49.422651,       -1.424966,   82696.64,  182432.64,    6122.16,             9918.60,    53.27,  24024.69,           25226.72,     39.95,    121.33,         144.42,  +2.70,  +1.39
  0,     UK002D,       0,  0.000000, 2459437.499431142583, 323.88065, -16.59651,              173.58881,  21.83467,       173.58376,       21.83658,    323.88065,     -16.59651,     323.88539,      -16.59426,  3134389.01, -2821690.23,  4890579.94,      49.414738,       -1.468158,   91976.22,  236874.63,       0.00,               30.40,   -21.02,      0.00,           25109.49,     -5.65,    -20.18,          18.25,  +3.44,  +1.57
  1,     UK002D,       0,  0.040188, 2459437.499431607779, 323.98279, -16.81058,              173.50068,  21.61400,       173.49095,       21.61768,    323.98279,     -16.81058,     323.99210,      -16.80624,  3134084.90, -2820932.20,  4889873.86,      49.415602,       -1.463436,   90963.01,  236413.45,    1079.65,             1110.04,    67.37,  26864.93,           25109.49,    -10.87,    -38.82,          35.17,  +3.01,  +1.14
  2,     UK002D,       0,  0.080348, 2459437.499432072509, 324.07409, -16.99227,              173.42156,  21.42632,       173.41204,       21.42992,    324.07409,     -16.99227,     324.08338,      -16.98801,  3133825.03, -2820284.42,  4889270.48,      49.416340,       -1.459423,   90097.17,  236022.32,    2002.26,             2032.66,    -0.58,  22973.52,           25109.49,    -10.62,    -37.95,          34.44,  +2.75,  +0.89
  3,     UK002D,       0,  0.120528, 2459437.499432537705, 324.19070, -17.19482,              173.31865,  21.21594,       173.32148,       21.21487,    324.19070,     -17.19482,     324.18853,      -17.19609,  3133528.51, -2819545.30,  4888582.01,      49.417182,       -1.454819,   89109.25,  235579.81,    3054.98,             3085.37,    61.08,  26199.93,           25109.49,      3.16,     11.27,          10.25,  +2.42,  +0.56
  4,     UK002D,       0,  0.160668, 2459437.499433001969, 324.27268, -17.35772,              173.24833,  21.04753,       173.25141,       21.04636,    324.27268,     -17.35772,     324.27044,      -17.35910,  3133296.96, -2818968.12,  4888044.40,      49.417840,       -1.451260,   88337.78,  235236.63,    3877.03,             3907.43,  -106.93,  20479.75,           24222.20,      3.43,     12.24,          11.14,  +2.58,  +0.72
  5,     UK002D,       0,  0.200868, 2459437.499433467630, 324.37163, -17.58390,              173.16633,  20.81472,       173.15591,       20.81866,    324.37163,     -17.58390,     324.38234,      -17.57921,  3132985.25, -2818191.12,  4887320.64,      49.418726,       -1.446409,   87299.23,  234778.81,    4983.71,             5014.10,     8.19,  27529.15,           24441.37,    -11.61,    -41.49,          37.85,  +1.84,  -0.01
  6,     UK002D,       0,  0.241036, 2459437.499433932360, 324.48033, -17.77547,              173.07204,  20.61561,       173.07145,       20.61583,    324.48033,     -17.77547,     324.48189,      -17.77520,  3132708.65, -2817501.64,  4886678.42,      49.419512,       -1.442121,   86377.67,  234376.00,    5965.71,             5996.11,    -0.57,  24447.43,           24520.28,     -0.66,     -2.34,           2.14,  +1.45,  -0.40
  7,     UK002D,       0,  0.281236, 2459437.499434397556, 324.59787, -17.99973,              172.97209,  20.38315,       172.97408,       20.38239,    324.59787,     -17.99973,     324.59714,      -18.00063,  3132391.56, -2816711.25,  4885942.21,      49.420413,       -1.437180,   85321.24,  233918.60,    7091.44,             7121.84,   133.61,  28003.23,           24843.63,      2.22,      7.94,           7.27,  +1.26,  -0.59
  8,     UK002D,       0,  0.321400, 2459437.499434862286, 324.67678, -18.18963,              172.90873,  20.18781,       172.89579,       20.19269,    324.67678,     -18.18963,     324.69044,      -18.18377,  3132134.81, -2816071.26,  4885346.07,      49.421142,       -1.433209,   84465.81,  233551.26,    8002.97,             8033.37,    54.48,  22695.30,           24851.30,    -14.37,    -51.38,          47.12,  +1.60,  -0.24
  9,     UK002D,       0,  0.361548, 2459437.499435327016, 324.78284, -18.35690,              172.81639,  20.01287,       172.82116,       20.01106,    324.78284,     -18.35690,     324.77980,      -18.35906,  3131889.77, -2815460.46,  4884777.14,      49.421839,       -1.429427,   83649.40,  233203.37,    8872.92,             8903.32,   -65.84,  21668.52,           24681.72,      5.30,     18.93,          17.39,  +1.83,  -0.01
 10,     UK002D,       0,  0.401720, 2459437.499435792211, 324.87466, -18.55279,              172.74132,  19.81044,       172.73900,       19.81132,    324.87466,     -18.55279,     324.87855,      -18.55173,  3131621.19, -2814790.98,  4884153.54,      49.422602,       -1.425263,   82754.58,  232825.29,    9826.45,             9856.84,  -103.17,  23736.02,           24546.23,     -2.58,     -9.21,           8.47,  +2.37,  +0.53
 11,     UK002D,       0,  0.441872, 2459437.499436256941, 324.97333, -18.72577,              172.65774,  19.63024,       172.66401,       19.62787,    324.97333,     -18.72577,     324.96918,      -18.72862,  3131375.32, -2814178.10,  4883582.68,      49.423301,       -1.421464,   81935.39,  232481.91,   10699.35,            10729.74,  -220.64,  21739.88,           24360.19,      6.96,     24.85,          22.90,  +4.18,  +2.35
  0,     UK0038,       0,  0.183950, 2459437.499433277175, 334.17954, -17.00974,              162.60248,  20.01358,       162.60703,       20.01189,    334.17954,     -17.00974,     334.17627,      -17.01224,  3133096.75, -2818469.05,  4887579.52,      49.418409,       -1.448135,   87670.71,  243820.56,       0.00,             4618.25,    29.62,      0.00,           26215.63,      7.03,     18.28,          16.57,  +3.07,  +1.13
  1,     UK0038,       0,  0.224094, 2459437.499433741439, 334.26475, -17.16807,              162.55046,  19.84239,       162.54018,       19.84621,    334.26475,     -17.16807,     334.27483,      -17.16242,  3132869.19, -2817901.81,  4887051.17,      49.419055,       -1.444638,   86912.53,  243540.85,     807.89,             5426.15,  -152.65,  20124.92,           26215.63,    -15.86,    -41.27,          37.45,  +2.14,  +0.21
  2,     UK0038,       0,  0.264310, 2459437.499434207100, 334.42738, -17.38912,              162.43492,  19.59511,       162.43732,       19.59422,    334.42738,     -17.38912,     334.42634,      -17.39044,  3132524.35, -2817042.25,  4886250.52,      49.420035,       -1.439251,   85763.64,  243123.16,    2032.16,             6650.41,    79.67,  30442.17,           26215.63,      3.71,      9.64,           8.76,  +1.53,  -0.40
  3,     UK0038,       0,  0.304506, 2459437.499434672296, 334.53892, -17.60242,              162.36909,  19.36497,       162.34764,       19.37294,    334.53892,     -17.60242,     334.55934,      -17.59059,  3132222.53, -2816289.91,  4885549.74,      49.420893,       -1.434555,   84758.08,  242761.60,    3103.69,             7721.95,   159.75,  26657.79,           26215.63,    -33.05,    -86.01,          78.29,  +1.72,  -0.21
  4,     UK0038,       0,  0.344650, 2459437.499435137026, 334.65280, -17.75031,              162.28761,  19.19845,       162.27903,       19.20163,    334.65280,     -17.75031,     334.66191,      -17.74557,  3131989.43, -2815708.86,  4885008.51,      49.421555,       -1.430965,   83981.43,  242484.42,    3931.27,             8549.53,    -2.84,  20615.24,           25281.87,    -13.22,    -34.39,          31.34,  +2.29,  +0.37

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.