Orbital Analysis for matched events on 20211103_031348.021_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 156.07° Bg 56.84° Vg 35.18km/s
mass 0.00352g, abs. mag 2.5
best visual mag 2.6
Path Details
------------
start -2.45° 50.91° 93.82km
end   -2.51° 50.86° 88.46km

Orbit Details
-------------
Semimajor axis 1.27A.U., eccentricity 0.32, inclination 66.74°, Period 1.43Y, LA Sun 220.62°, last Perihelion 2021-09-15

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: 2459521.634583585430
Time: 2021-11-03 03:13:48.021781 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK003J and UK003Z
 Convergence angle = 35.28068 deg
 R.A. = 192.86279  Dec = +59.31245 deg

Best intersection: Stations UK003J and UK003Z with Qconv = 35.28 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =     99192.98 +/- 23.85 m
 Y =   4088029.82 +/- 80.18 m
 Z =   4999893.39 +/- 35.53 m
 Vx =   -18156.42 +/- 168.22 m/s
 Vy =    -4093.83 +/- 669.66 m/s
 Vz =    31850.19 +/- 271.32 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+6.085225e+02, +1.550600e+03, +6.686997e+02, +3.609036e+03, +1.256026e+04, +5.595674e+03
+1.550600e+03, +6.857476e+03, +2.632578e+03, +1.109216e+04, +5.373355e+04, +2.082641e+04
+6.686997e+02, +2.632578e+03, +1.353421e+03, +5.631650e+03, +2.079041e+04, +8.931263e+03
+3.609036e+03, +1.109216e+04, +5.631650e+03, +3.297217e+04, +1.070028e+05, +4.782231e+04
+1.256026e+04, +5.373355e+04, +2.079041e+04, +1.070028e+05, +4.876949e+05, +1.896861e+05
+5.595674e+03, +2.082641e+04, +8.931263e+03, +4.782231e+04, +1.896861e+05, +7.803011e+04

Timing offsets (from input data):
    UK003J: 0.000000 s
    UK003Z: -0.000076 s

Reference point on the trajectory:
  Time: 2021-11-03 03:13:48.021781 UTC
  Lon     = +-2.445338 +/- 0.0003 deg
  Lat     = +50.907238 +/- 0.0004 deg
  Lat geo = +50.721501 +/- 0.0004 deg
  Ht      =   93813.91 +/- 75.98 m

  JD dynamic   = 2459521.635384326335 
  LST apparent = 88.6100335900 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 192.70633 +/- 2.0243 deg
  Dec       = +59.69936 +/- 0.5757 deg
  Azimuth   =  37.40995 +/- 0.2984 deg
  Elevation = +36.34267 +/- 1.1222 deg
  Vavg      =  36.26186 +/- 0.1193 km/s
  Vinit     =  36.88970 +/- 0.1032 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 192.48618 +/- 2.0243 deg
  Dec       = +59.31287 +/- 0.5757 deg
  Azimuth   =  37.86389 +/- 0.2984 deg
  Elevation = +36.17573 +/- 1.1222 deg
  Vavg      =  36.40869 +/- 0.1193 km/s
  Vinit     =  37.03653 +/- 0.1032 km/s
Radiant (geocentric, J2000):
  R.A.   = 194.50596 +/- 2.0111 deg
  Dec    = +58.90446 +/- 0.6291 deg
  Vg     =  35.17714 +/- 0.1082 km/s
  Vinf   =  36.88970 +/- 0.1032 km/s
  Zc     =  53.80494 +/- 1.1226 deg
  Zg     =  55.18652 +/- 1.1630 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 156.06787 +/- 2.0700 deg
  Bg     = +56.83631 +/- 0.3202 deg
  Vh     =  32.99446 +/- 0.2990 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 278.86718 +/- 1.1824 deg
  Bh     = +63.18813 +/- 1.0811 deg
  Vh_x   =  -2.29406 +/- 0.1666 km/s
  Vh_y   =  14.70469 +/- 0.7189 km/s
  Vh_z   = -29.44731 +/- 0.0579 km/s
Orbit:
  La Sun = 220.621097 +/- -0.0000 deg
  a      =   1.267820 +/- 0.0325 AU
  e      =   0.317786 +/- 0.0252
  i      =  66.744824 +/- 0.7546 deg
  peri   = 117.930659 +/- 1.1091 deg
  node   = 220.622348 +/- 0.0000 deg
  Pi     = 338.553007 +/- 1.1091 deg
  q      =   0.864924 +/- 0.0083 AU
  f      =  62.070351 +/- 1.1091 deg
  M      =  33.541343 +/- 2.3118 deg
  Q      =   1.670716 +/- 0.0721 AU
  n      =   0.690427 +/- 0.0294 deg/day
  T      =   1.427536 +/- 0.0539 years
  Last perihelion JD = 2459473.054780 (2021-09-15 13:18:52.985593) +/- 1.2328 days
  Tj     =   4.474439 +/- 0.1009
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +6.757639e-04, -2.002655e-04, +2.678008e-02, -3.822464e-07, +5.572534e-03, -2.023885e-02
q   , -2.002655e-04, +7.345431e-05, -5.123122e-03, +1.115616e-07, +2.594731e-03, +5.903503e-03
Tp  , +2.678008e-02, -5.123122e-03, +1.630951e+00, -1.550404e-05, +1.076269e+00, -8.219396e-01
node, -3.822464e-07, +1.115616e-07, -1.550404e-05, +2.168146e-10, -3.682281e-06, +1.148122e-05
peri, +5.572534e-03, +2.594731e-03, +1.076269e+00, -3.682281e-06, +1.332721e+00, -1.963465e-01
i   , -2.023885e-02, +5.903503e-03, -8.219396e-01, +1.148122e-05, -1.963465e-01, +6.080007e-01

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: UK003J
  Avg. res. = 1.133e-05 s
  Stddev    = 3.37e-03 s

Begin point on the trajectory:
  Lon =    -2.445274 +/- 0.0003 deg
  Lat =    50.907291 +/- 0.0003 deg
  Ht  = 93819.42 +/- 80.62 m
End point on the trajectory:
  Lon =    -2.508325 +/- 0.0003 deg
  Lat =    50.855940 +/- 0.0005 deg
  Ht  = 88460.14 +/- 90.83 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
    UK003J,   False,    -2.379250,    51.361350,  169.00,   0.000000,   0.000000,    93819.42,    88460.14,          0.010091,      8.34,     16.65,              77.53, 1.0000,    True,    True, {"ff_name": "FF_UK003J_20211103_031341_100_0896768.fits"}
    UK003Z,   False,    -1.639327,    51.011519,   64.00,   0.000000,   0.000000,    93195.33,    88950.11,          0.027856,     32.31,     42.43,              78.58, 1.0000,    True,    True, {"ff_name": "FF_UK003Z_20211103_031346_966_0900352.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,     UK003J,       0,  0.000000, 2459521.634583585430,  85.92688,  22.59669,              185.26704,  61.15643,       185.25271,       61.15306,     85.92688,     +22.59669,      85.93398,      +22.59290,    99188.41,  4088028.79,  4999901.41,      50.907291,       -2.445274,   93819.42,  106683.67,       0.00,                9.29,   198.06,      0.00,           34578.43,     12.80,     -6.41,          27.68,  +3.48,  +3.34
  1,     UK003J,       0,  0.040616, 2459521.634584055748,  85.52615,  21.94993,              185.93863,  60.48664,       185.92563,       60.48360,     85.52615,     +21.94993,      85.53284,      +21.94645,    99880.45,  4088184.82,  4998687.42,      50.899320,       -2.455084,   92986.23,  106415.80,    1406.07,             1396.78,    87.24,  34618.58,           34578.43,     11.77,     -5.90,          25.53,  +2.63,  +2.49
  2,     UK003J,       0,  0.081236, 2459521.634584525600,  85.13381,  21.29226,              186.57268,  59.80404,       186.57675,       59.80498,     85.13381,     +21.29226,      85.13189,      +21.29336,   100575.17,  4088341.47,  4997468.74,      50.891316,       -2.464930,   92150.00,  106165.09,    2817.58,             2808.29,     0.29,  34749.15,           34578.43,     -3.74,      1.88,           8.14,  +2.56,  +2.43
  3,     UK003J,       0,  0.121856, 2459521.634584995918,  84.73082,  20.64801,              187.20927,  59.13167,       187.19703,       59.12883,     84.73082,     +20.64801,      84.73763,      +20.64466,   101261.12,  4088496.13,  4996265.43,      50.883410,       -2.474654,   91324.51,  105935.57,    4211.28,             4201.99,  -104.47,  34310.66,           34578.43,     11.40,     -5.71,          24.82,  +3.39,  +3.26
  4,     UK003J,       0,  0.162620, 2459521.634585467633,  84.24257,  19.85274,              187.95352,  58.29924,       187.92502,       58.29268,     84.24257,     +19.85274,      84.25833,      +19.84483,   102101.75,  4088685.67,  4994790.79,      50.873717,       -2.486531,   90313.13,  105678.69,    5919.24,             5909.95,    99.72,  41898.81,           36026.65,     26.96,    -13.50,          58.86,  +3.16,  +3.04
  5,     UK003J,       0,  0.244044, 2459521.634586410131,  83.39718,  18.35982,              189.16052,  56.73497,       189.18320,       56.74015,     83.39718,     +18.35982,      83.38559,      +18.36628,   103642.48,  4089033.07,  4992088.02,      50.855940,       -2.508325,   88460.14,  105278.83,    9049.66,             9040.38,   226.44,  38445.94,           37131.67,    -22.14,     11.09,          48.52,  +5.44,  +5.33
  0,     UK003Z,       0,  0.025483, 2459521.634583979845,  48.90217,  35.85770,              258.16010,  57.45534,       258.20773,       57.43942,     48.90217,     +35.85770,      48.86669,      +35.86682,    99706.76,  4088145.66,  4998992.11,      50.901321,       -2.452637,   93195.33,  110179.80,       0.00,             1043.89,   292.60,      0.00,           33977.46,    -46.18,     35.11,         108.60,  +2.93,  +2.72
  1,     UK003Z,       0,  0.065923, 2459521.634584447835,  48.60080,  35.20168,              257.54212,  56.84041,       257.53876,       56.84152,     48.60080,     +35.20168,      48.60348,      +35.20103,   100374.28,  4088296.17,  4997821.14,      50.893631,       -2.462104,   92391.80,  109955.86,    1356.24,             2400.13,   157.02,  33537.10,           33977.46,      3.28,     -2.50,           7.74,  +2.75,  +2.54
  2,     UK003Z,       0,  0.106299, 2459521.634584915359,  48.39341,  34.56980,              256.88918,  56.29378,       256.93290,       56.27933,     48.39341,     +34.56980,      48.36100,      +34.57821,   100995.68,  4088436.28,  4996731.07,      50.886469,       -2.470928,   91643.92,  109762.59,    2618.80,             3662.68,   -69.88,  31269.94,           33977.46,    -43.07,     32.75,         101.67,  +2.97,  +2.77
  3,     UK003Z,       0,  0.146831, 2459521.634585384279,  48.00763,  33.83111,              256.29652,  55.56082,       256.21415,       55.58795,     48.00763,     +33.83111,      48.07013,      +33.81523,   101753.94,  4088607.25,  4995400.92,      50.877728,       -2.481657,   90731.55,  109544.77,    4159.40,             5203.29,   -24.49,  38009.61,           33977.46,     81.95,    -62.46,         194.01,  +3.77,  +3.57
  4,     UK003Z,       0,  0.187299, 2459521.634585852735,  47.77001,  33.02908,              255.50568,  54.86870,       255.49900,       54.87088,     47.77001,     +33.02908,      47.77572,      +33.02779,   102532.88,  4088782.88,  4994034.49,      50.868744,       -2.492674,   89794.52,  109343.14,    5742.03,             6785.92,    65.29,  39108.20,           35318.11,      6.71,     -5.11,          15.91,  +4.27,  +4.08
  5,     UK003Z,       0,  0.227747, 2459521.634586320724,  47.51760,  32.31358,              254.86755,  54.22055,       254.87416,       54.21841,     47.51760,     +32.31358,      47.51344,      +32.31486,   103234.99,  4088941.19,  4992802.84,      50.860643,       -2.502619,   88950.11,  109181.52,    7168.56,             8212.45,    -0.29,  35268.28,           35693.70,     -6.70,      5.10,          15.91,  +5.88,  +5.69

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.