Orbital Analysis for matched events on 20210929_001249.606_UK

Summary for Event
-----------------
shower ID 2 STA
Lg 23.93° Bg -0.39° Vg 31.11km/s
mass 0.05052g, abs. mag -0.4
Path Details
------------
start -4.90° 50.14° 89.52km
end   -4.92° 50.17° 84.72km

Orbit Details
-------------
Semimajor axis 1.90A.U., eccentricity 0.87, inclination 0.61°, Period 2.62Y, LA Sun 185.78°, last Perihelion 2019-03-27

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: 2459486.508907486685
Time: 2021-09-29 00:12:49.606850 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0021 and UK003K
 Convergence angle = 21.23761 deg
 R.A. =  22.73440  Dec = +10.25335 deg

Best intersection: Stations UK0021 and UK003K with Qconv = 21.24 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   4128497.38 +/- 59.88 m
 Y =    455381.98 +/- 64.14 m
 Z =   4941309.21 +/- 47.74 m
 Vx =    30084.67 +/- 364.98 m/s
 Vy =    12295.66 +/- 588.54 m/s
 Vz =     5903.81 +/- 347.35 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+3.693198e+03, -2.288602e+03, +2.604568e+03, +1.355799e+04, -1.460240e+04, +1.361508e+04
-2.288602e+03, +4.359679e+03, -2.766037e+03, -1.850095e+04, +2.327163e+04, -1.706182e+04
+2.604568e+03, -2.766037e+03, +2.381414e+03, +1.388197e+04, -1.685775e+04, +1.434254e+04
+1.355799e+04, -1.850095e+04, +1.388197e+04, +1.301896e+05, -1.467721e+05, +1.166563e+05
-1.460240e+04, +2.327163e+04, -1.685775e+04, -1.467721e+05, +2.006375e+05, -1.504240e+05
+1.361508e+04, -1.706182e+04, +1.434254e+04, +1.166563e+05, -1.504240e+05, +1.239307e+05

Timing offsets (from input data):
    UK0021: 0.000000 s
    UK003K: -0.001372 s

Reference point on the trajectory:
  Time: 2021-09-29 00:12:49.606850 UTC
  Lon     = +-4.896280 +/- 0.0009 deg
  Lat     = +50.137286 +/- 0.0002 deg
  Lat geo = +49.950463 +/- 0.0002 deg
  Ht      =   89473.13 +/- 69.28 m

  JD dynamic   = 2459486.509708227590 
  LST apparent = 6.2944007475 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  22.22992 +/- 0.9228 deg
  Dec       = +10.29573 +/- 0.5396 deg
  Azimuth   = 156.17122 +/- 1.0935 deg
  Elevation = +48.03768 +/- 0.7570 deg
  Vavg      =  33.71105 +/- 0.5159 km/s
  Vinit     =  33.03219 +/- 0.2298 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  22.74203 +/- 0.9228 deg
  Dec       = +10.26961 +/- 0.5396 deg
  Azimuth   = 155.45648 +/- 1.0935 deg
  Elevation = +47.87803 +/- 0.7570 deg
  Vavg      =  33.79415 +/- 0.5159 km/s
  Vinit     =  33.11529 +/- 0.2298 km/s
Radiant (geocentric, J2000):
  R.A.   =  22.29650 +/- 0.9484 deg
  Dec    =  +8.91738 +/- 0.5751 deg
  Vg     =  31.10675 +/- 0.2438 km/s
  Vinf   =  33.03219 +/- 0.2298 km/s
  Zc     =  41.79147 +/- 0.7585 deg
  Zg     =  43.10474 +/- 0.8006 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  23.92586 +/- 0.6730 deg
  Bg     =  -0.39317 +/- 0.8700 deg
  Vh     =  36.11405 +/- 0.4248 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 332.07675 +/- 0.1793 deg
  Bh     =  -0.33503 +/- 0.7591 deg
  Vh_x   = -31.90895 +/- 0.3674 km/s
  Vh_y   =  16.91150 +/- 0.2510 km/s
  Vh_z   =   0.21117 +/- 0.4729 km/s
Orbit:
  La Sun = 185.784891 +/- 0.0000 deg
  a      =   1.900687 +/- 0.1265 AU
  e      =   0.872275 +/- 0.0054
  i      =   0.605312 +/- 1.0276 deg
  peri   = 128.882098 +/- 45.1160 deg
  node   =   5.682353 +/- 45.1260 deg
  Pi     = 134.564452 +/- 1.2920 deg
  q      =   0.242765 +/- 0.0059 AU
  f      = 231.221186 +/- 1.2920 deg
  M      = 344.825155 +/- 1.5594 deg
  Q      =   3.558608 +/- 0.2476 AU
  n      =   0.376131 +/- 0.0371 deg/day
  T      =   2.620393 +/- 0.2638 years
  Last perihelion JD = 2458569.739191 (2019-03-27 05:44:26.136146) +/- 96.5290 days
  Tj     =   3.329121 +/- 0.1720
Shower association:
  IAU No.  =    2
  IAU code =  STA

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +3.035803e-05, +2.730760e-05, -5.276777e-01, -4.428562e-03, +4.313555e-03, -7.391535e-05
q   , +2.730760e-05, +3.833161e-05, -5.628602e-01, -4.335999e-03, +4.194511e-03, -9.205869e-05
Tp  , -5.276777e-01, -5.628602e-01, +9.812851e+03, +8.284002e+01, -8.060087e+01, +1.372575e+00
node, -4.428562e-03, -4.335999e-03, +8.284002e+01, +1.238478e+00, -1.220893e+00, +9.393009e-03
peri, +4.313555e-03, +4.194511e-03, -8.060087e+01, -1.220893e+00, +1.203848e+00, -9.038882e-03
i   , -7.391535e-05, -9.205869e-05, +1.372575e+00, +9.393009e-03, -9.038882e-03, +3.433302e-04

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: UK0021
  Avg. res. = 1.514e-05 s
  Stddev    = 3.89e-03 s

Begin point on the trajectory:
  Lon =    -4.896028 +/- 0.0008 deg
  Lat =    50.136920 +/- 0.0002 deg
  Ht  = 89523.37 +/- 77.39 m
End point on the trajectory:
  Lon =    -4.920933 +/- 0.0005 deg
  Lat =    50.171974 +/- 0.0003 deg
  Ht  = 84720.97 +/- 87.09 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,   0.000000,   0.000000,    89523.37,    85533.08,          0.015442,     39.09,      4.25,              58.53, 1.0000,    True,    True, {"ff_name": "FF_UK0021_20210929_001243_640_0511232.fits"}
    UK003K,   False,    -4.388944,    50.464439,  133.00,   0.000000,   0.000000,    88771.08,    84720.97,          0.005075,      8.82,      1.25,              41.00, 1.0000,    True,    True, {"ff_name": "FF_UK003K_20210929_001245_958_0507136.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,  0.000000, 2459486.508907486685, 323.71564,  11.49711,              238.33562,  36.94717,       238.34771,       36.95939,    323.71564,     +11.49711,     323.71414,      +11.51263,  4128558.91,   455407.13,  4941321.28,      50.136920,       -4.896028,   89523.37,  147094.85,       0.00,               67.56,    85.33,      0.00,           33777.08,     -4.32,     39.76,          56.08,  +4.19,  +3.35
  1,     UK0021,       0,  0.040192, 2459486.508907951880, 323.27243,  11.46215,              238.76411,  36.67849,       238.77368,       36.68810,    323.27243,     +11.46215,     323.27137,      +11.47441,  4127364.69,   454919.05,  4941086.93,      50.144031,       -4.901083,   88548.41,  146400.16,    1311.22,             1243.66,   -66.20,  32623.91,           33777.08,     -3.40,     31.25,          44.29,  +2.06,  +1.23
  2,     UK0021,       0,  0.080388, 2459486.508908417076, 322.75767,  11.45269,              239.28025,  36.39103,       239.26207,       36.37288,    322.75767,     +11.45269,     322.76000,      +11.42947,  4125997.62,   454360.33,  4940818.65,      50.152174,       -4.906850,   87432.46,  145614.20,    2812.23,             2744.67,   107.05,  37342.34,           33777.08,      6.41,    -58.91,          83.94,  +1.78,  +0.96
  3,     UK0021,       0,  0.120596, 2459486.508908882737, 322.34313,  11.37656,              239.64627,  36.10160,       239.65838,       36.11363,    322.34313,     +11.37656,     322.34207,      +11.39201,  4124892.50,   453908.66,  4940601.79,      50.158758,       -4.911546,   86530.44,  144988.72,    4025.62,             3958.06,    -7.72,  30177.78,           33777.08,     -4.24,     39.03,          55.85,  +1.82,  +1.01
  4,     UK0021,       0,  0.160792, 2459486.508909347933, 321.87602,  11.34585,              240.09426,  35.82020,       240.09719,       35.82310,    321.87602,     +11.34585,     321.87621,      +11.34958,  4123670.45,   453409.21,  4940361.97,      50.166041,       -4.916725,   85533.08,  144304.94,    5367.40,             5299.84,     6.30,  33380.95,           33456.69,     -1.02,      9.38,          13.48,  +2.48,  +1.68
  0,     UK003K,       0,  0.026903, 2459486.508907842450, 343.06069,  26.14661,              225.65715,  59.64583,       225.65822,       59.64791,    343.06069,     +26.14661,     343.06135,      +26.14868,  4127637.45,   455030.53,  4941140.45,      50.142407,       -4.899927,   88771.08,  102476.83,       0.00,              944.19,    73.29,      0.00,           33203.01,     -0.54,      3.80,           7.73,  +1.22,  +1.17
  1,     UK003K,       0,  0.066903, 2459486.508908305317, 342.64079,  26.25955,              226.41121,  59.55055,       226.40730,       59.54332,    342.64079,     +26.25955,     342.63871,      +26.25234,  4126667.61,   454634.15,  4940950.13,      50.148183,       -4.904065,   87979.35,  101670.48,    1064.86,             2009.04,  -183.14,  26621.43,           33203.01,      1.87,    -13.16,          26.97,  +0.42,  +0.38
  2,     UK003K,       0,  0.106927, 2459486.508908768650, 341.97511,  26.41352,              227.57193,  59.37225,       227.57204,       59.37244,    341.97511,     +26.41352,     341.97550,      +26.41371,  4125171.09,   454022.52,  4940656.45,      50.157098,       -4.910363,   86757.82,  100433.38,    2708.00,             3652.18,   137.92,  41053.86,           33203.01,     -0.05,      0.33,           0.69,  +0.58,  +0.57
  3,     UK003K,       0,  0.146931, 2459486.508909231517, 341.49092,  26.53680,              228.42049,  59.24788,       228.41585,       59.24015,    341.49092,     +26.53680,     341.48907,      +26.52900,  4124103.20,   453586.07,  4940446.89,      50.163462,       -4.914908,   85886.25,   99559.13,    3880.51,             4824.70,   -10.99,  29309.91,           33203.01,      1.97,    -13.90,          29.09,  +1.18,  +1.19
  4,     UK003K,       0,  0.186955, 2459486.508909694850, 340.82483,  26.68254,              229.55271,  59.05087,       229.55370,       59.05243,    340.82483,     +26.68254,     340.82597,      +26.68413,  4122675.27,   453002.48,  4940166.68,      50.171974,       -4.920933,   84720.97,   98398.38,    5448.34,             6392.53,   234.76,  39172.28,           34269.75,     -0.40,      2.79,           5.91,  +1.47,  +1.51

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.