Orbital Analysis for matched events on 20210904_213602.503_UK

Summary for Event
-----------------
shower ID -1 spo
Lg 105.57° Bg 50.27° Vg 49.18km/s
mass 0.00827g, abs. mag 0.9
Path Details
------------
start -1.76° 50.21° 98.63km
end   -1.76° 50.09° 89.90km

Orbit Details
-------------
Semimajor axis 25.85A.U., eccentricity 0.97, inclination 85.06°, Period 131.42Y, LA Sun 162.27°, last Perihelion 2021-08-05

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: 2459462.400028975215
Time: 2021-09-04 21:36:02.503459 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0009 and UK002D
 Convergence angle = 24.59360 deg
 R.A. = 122.65684  Dec = +72.42018 deg

Best intersection: Stations UK0009 and UK002D with Qconv = 24.59 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   2468643.45 +/- 23.42 m
 Y =  -3339405.30 +/- 52.92 m
 Z =   4953829.67 +/- 19.05 m
 Vx =    -8433.64 +/- 116.70 m/s
 Vy =    12489.92 +/- 384.95 m/s
 Vz =    48118.18 +/- 409.07 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+5.748795e+02, -1.163955e+03, -1.987626e+02, +4.262867e+03, -7.231054e+03, -2.197261e+03
-1.163955e+03, +2.964464e+03, +3.365508e+02, -7.275074e+03, +1.500865e+04, +3.930766e+03
-1.987626e+02, +3.365508e+02, +3.870303e+02, -2.173968e+03, +3.176479e+03, +4.928658e+03
+4.262867e+03, -7.275074e+03, -2.173968e+03, +4.420111e+04, -7.050765e+04, -2.935192e+04
-7.231054e+03, +1.500865e+04, +3.176479e+03, -7.050765e+04, +1.339021e+05, +4.723007e+04
-2.197261e+03, +3.930766e+03, +4.928658e+03, -2.935192e+04, +4.723007e+04, +7.174078e+04

Timing offsets (from input data):
    UK0009: -0.000083 s
    UK002D: 0.000000 s

Reference point on the trajectory:
  Time: 2021-09-04 21:36:02.503459 UTC
  Lon     = +-1.758297 +/- 0.0002 deg
  Lat     = +50.213270 +/- 0.0004 deg
  Lat geo = +50.026799 +/- 0.0004 deg
  Ht      =   98629.09 +/- 33.20 m

  JD dynamic   = 2459462.400829716120 
  LST apparent = 306.4735321241 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 124.02863 +/- 0.3224 deg
  Dec       = +72.60941 +/- 0.4033 deg
  Azimuth   =   0.86945 +/- 0.1184 deg
  Elevation = +32.83455 +/- 0.4015 deg
  Vavg      =  49.07379 +/- 0.1194 km/s
  Vinit     =  50.42304 +/- 0.3220 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 122.87952 +/- 0.3224 deg
  Dec       = +72.59211 +/- 0.4033 deg
  Azimuth   =   1.27889 +/- 0.1184 deg
  Elevation = +32.83105 +/- 0.4015 deg
  Vavg      =  49.07856 +/- 0.1194 km/s
  Vinit     =  50.42781 +/- 0.3220 km/s
Radiant (geocentric, J2000):
  R.A.   = 123.52608 +/- 0.3097 deg
  Dec    = +71.89797 +/- 0.4038 deg
  Vg     =  49.18497 +/- 0.3303 km/s
  Vinf   =  50.42304 +/- 0.3220 km/s
  Zc     =  57.35190 +/- 0.4015 deg
  Zg     =  58.13090 +/- 0.4018 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 105.57412 +/- 0.2040 deg
  Bg     = +50.26924 +/- 0.3939 deg
  Vh     =  41.53561 +/- 0.2188 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 173.26407 +/- 1.2581 deg
  Bh     = +65.60644 +/- 0.3114 deg
  Vh_x   =  17.03588 +/- 0.1997 km/s
  Vh_y   =  -2.01209 +/- 0.3842 km/s
  Vh_z   = -37.82773 +/- 0.2157 km/s
Orbit:
  La Sun = 162.269878 +/- nan deg
  a      =  25.848606 +/- 12.1302 AU
  e      =   0.967508 +/- 0.0173
  i      =  85.057195 +/- 0.4734 deg
  peri   = 131.311412 +/- 0.8631 deg
  node   = 162.270001 +/- 0.0000 deg
  Pi     = 293.581413 +/- 0.8631 deg
  q      =   0.839872 +/- 0.0052 AU
  f      =  48.685858 +/- 0.8631 deg
  M      =   0.230694 +/- 0.2112 deg
  Q      =  50.857340 +/- 24.2597 AU
  n      =   0.007500 +/- 0.0068 deg/day
  T      = 131.418444 +/- 101.7623 years
  Last perihelion JD = 2459431.640690 (2021-08-05 03:22:35.608660) +/- 0.4860 days
  Tj     =   0.298438 +/- 0.1115
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +3.190711e-04, +6.990654e-06, +5.730324e-03, -4.361087e-09, +9.408562e-05, +9.094736e-05
q   , +6.990654e-06, +2.844823e-05, +2.180569e-03, +1.499542e-09, +7.989443e-05, -3.130691e-05
Tp  , +5.730324e-03, +2.180569e-03, +2.522838e-01, +3.689954e-08, +7.344622e-03, -7.720079e-04
node, -4.361087e-09, +1.499542e-09, +3.689954e-08, +1.671280e-13, +3.090901e-09, -3.487708e-09
peri, +9.408562e-05, +7.989443e-05, +7.344622e-03, +3.090901e-09, +2.418785e-04, -6.455400e-05
i   , +9.094736e-05, -3.130691e-05, -7.720079e-04, -3.487708e-09, -6.455400e-05, +7.278327e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 22.338350
 a2 = 8.107580

Mean time residuals from time vs. length:
  Station with reference time: UK002D
  Avg. res. = 2.820e-06 s
  Stddev    = 1.68e-03 s

Begin point on the trajectory:
  Lon =    -1.758296 +/- 0.0002 deg
  Lat =    50.213340 +/- 0.0004 deg
  Ht  = 98634.19 +/- 33.64 m
End point on the trajectory:
  Lon =    -1.762487 +/- 0.0003 deg
  Lat =    50.093153 +/- 0.0006 deg
  Ht  = 89898.13 +/- 47.36 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
    UK0009,   False,    -0.848117,    51.261084,   92.00,   3.411714,  19.765873,    97995.43,    92728.98,          0.007601,     19.21,     11.44,             105.57, 1.0000,    True,    True, {"ff_name": "FF_UK0009_20210904_213602_885_0133376.fits"}
    UK002D,   False,    -1.801980,    51.351940,  129.00,  18.428917,   8.482033,    98634.19,    89898.13,          0.012054,     34.37,      4.09,             108.68, 1.0000,    True,    True, {"ff_name": "FF_UK002D_20210904_213554_372_0203520.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,     UK0009,       0,  0.019698, 2459462.400029190350, 284.07049,   0.28676,              209.02640,  35.35059,       209.02731,       35.35026,    284.07049,      +0.28676,     284.06976,       +0.28667,  2468838.93, -3339694.81,  4952714.32,      50.204576,       -1.758581,   97995.43,  166748.63,       0.00,             1168.78,   141.54,      0.00,           49376.57,      1.21,     -2.04,           2.93,  +2.55,  +1.44
  1,     UK0009,       0,  0.059846, 2459462.400029655080, 284.12793,  -0.31853,              208.73597,  34.79097,       208.73319,       34.79197,    284.12793,      -0.31853,     284.13065,       -0.31826,  2469148.01, -3340152.54,  4950950.87,      50.190826,       -1.759073,   96993.85,  167272.98,    1847.92,             3016.69,   -34.93,  46027.62,           49376.57,     -3.72,      6.26,           8.98,  +1.82,  +0.70
  2,     UK0009,       0,  0.099998, 2459462.400030119810, 284.18532,  -0.94861,              208.44059,  34.20699,       208.43114,       34.21038,    284.18532,      -0.94861,     284.19420,       -0.94771,  2469471.72, -3340631.95,  4949103.94,      50.176421,       -1.759581,   95945.25,  167842.00,    3783.32,             4952.09,  -124.12,  48201.80,           49376.57,    -12.76,     21.43,          30.65,  +2.42,  +1.30
  3,     UK0009,       0,  0.140174, 2459462.400030584540, 284.25096,  -1.65338,              208.11338,  33.55338,       208.09760,       33.55903,    284.25096,      -1.65338,     284.26577,       -1.65186,  2469836.52, -3341172.20,  4947022.58,      50.160183,       -1.760132,   94764.02,  168506.99,    5964.37,             7133.15,    31.14,  54287.60,           49376.57,    -21.53,     36.17,          51.52,  +2.33,  +1.20
  4,     UK0009,       0,  0.180350, 2459462.400031049736, 284.32665,  -2.23993,              207.82084,  33.01490,       207.82345,       33.01397,    284.32665,      -2.23993,     284.32503,       -2.24018,  2470143.58, -3341626.95,  4945270.65,      50.146509,       -1.760623,   93770.13,  169087.24,    7800.22,             8969.00,  -158.80,  45695.17,           49092.08,      3.59,     -6.04,           8.57,  +2.20,  +1.06
  5,     UK0009,       0,  0.220498, 2459462.400031514466, 284.37851,  -2.85312,              207.54978,  32.44333,       207.54156,       32.44626,    284.37851,      -2.85312,     284.38692,       -2.85232,  2470465.36, -3342103.49,  4943434.73,      50.132176,       -1.761129,   92728.98,  169714.26,    9724.08,            10892.86,  -259.33,  47919.19,           48843.34,    -11.41,     19.17,          27.12,  +2.23,  +1.08
  0,     UK002D,       0,  0.000000, 2459462.400028975215, 307.55512,  -1.56028,              178.59001,  37.07914,       178.58977,       37.07913,    307.55512,      -1.56028,     307.55532,       -1.56028,  2468641.87, -3339402.97,  4953838.64,      50.213340,       -1.758296,   98634.19,  161259.20,       0.00,                9.40,   -24.63,      0.00,           50370.16,     -0.07,      0.55,           0.71,  +4.53,  +3.49
  1,     UK002D,       0,  0.040624, 2459462.400029445533, 307.54223,  -2.28150,              178.61977,  36.35819,       178.62634,       36.35838,    307.54223,      -2.28150,     307.53710,       -2.28140,  2469002.36, -3339936.84,  4951781.89,      50.197306,       -1.758844,   97465.80,  161970.52,    2155.26,             2145.87,    63.45,  53053.95,           50370.16,      1.77,    -14.86,          19.06,  +2.56,  +1.51
  2,     UK002D,       0,  0.081200, 2459462.400029914919, 307.53254,  -2.94682,              178.64401,  35.69309,       178.65985,       35.69353,    307.53254,      -2.94682,     307.52000,       -2.94657,  2469337.75, -3340433.55,  4949868.29,      50.182383,       -1.759366,   96379.16,  162655.16,    4160.53,             4151.13,    22.75,  49420.09,           50370.16,      4.31,    -36.27,          46.32,  +2.37,  +1.31
  3,     UK002D,       0,  0.121768, 2459462.400030384772, 307.51164,  -3.59985,              178.68129,  35.04043,       178.69226,       35.04074,    307.51164,      -3.59985,     307.50315,       -3.59968,  2469669.89, -3340925.42,  4947973.31,      50.167601,       -1.759885,   95303.52,  163354.57,    6146.28,             6136.88,   -37.06,  48948.61,           50370.16,      3.03,    -25.45,          32.36,  +2.03,  +0.96
  4,     UK002D,       0,  0.162304, 2459462.400030853692, 307.51028,  -4.21706,              178.69371,  34.42331,       178.72265,       34.42412,    307.51028,      -4.21706,     307.48702,       -4.21659,  2469986.28, -3341393.99,  4946168.12,      50.153514,       -1.760387,   94279.22,  164040.41,    8037.94,             8028.54,  -189.35,  46666.21,           49456.52,      8.06,    -67.90,          85.97,  +2.73,  +1.66
  5,     UK002D,       0,  0.243464, 2459462.400031792931, 307.45944,  -5.55514,              178.77689,  33.08605,       178.78607,       33.08631,    307.45944,      -5.55514,     307.45273,       -5.55499,  2470682.16, -3342424.56,  4942197.79,      50.122516,       -1.761457,   92027.74,  165614.91,   12198.45,            12189.05,  -121.18,  51262.99,           49711.43,      2.63,    -22.08,          27.69,  +2.42,  +1.32
  6,     UK002D,       0,  0.283996, 2459462.400032262318, 307.43528,  -6.16838,              178.81510,  32.47318,       178.81484,       32.47318,    307.43528,      -6.16838,     307.43669,       -6.16839,  2471005.65, -3342903.64,  4940352.12,      50.108099,       -1.761966,   90981.71,  166377.17,   14132.52,            14123.12,  -230.85,  47717.25,           49583.81,     -0.07,      0.62,           0.77,  +2.02,  +0.91
  7,     UK002D,       0,  0.324548, 2459462.400032731704, 307.43515,  -6.79839,              178.82488,  31.84324,       178.84380,       31.84376,    307.43515,      -6.79839,     307.42032,       -6.79807,  2471340.88, -3343400.10,  4938439.46,      50.093153,       -1.762487,   89898.13,  167187.05,   16136.81,            16127.41,  -271.32,  49425.04,           49524.53,      5.55,    -46.58,          57.88,  +2.19,  +1.07

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.