Orbital Analysis for matched events on 20211015_031220.889_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 120.34° Bg -2.92° Vg 66.13km/s
mass 0.06568g, abs. mag -2.1
best visual mag 0.2
Path Details
------------
start -5.26° 52.26° 101.87km
end   -5.41° 52.29° 94.13km

Orbit Details
-------------
Semimajor axis 2.09A.U., eccentricity 0.57, inclination 174.57°, Period 3.03Y, LA Sun 201.69°, last Perihelion 2021-09-14

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: 2459502.633575106505
Time: 2021-10-15 03:12:20.889202 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK003F and UK003Y
 Convergence angle = 76.09134 deg
 R.A. = 123.06555  Dec = +17.42167 deg

Best intersection: Stations UK003F and UK003Y with Qconv = 76.09 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   1571824.19 +/- 79.59 m
 Y =   3650719.88 +/- 69.39 m
 Z =   5100893.69 +/- 54.15 m
 Vx =   -33814.24 +/- 410.58 m/s
 Vy =    54282.82 +/- 654.99 m/s
 Vz =    20149.04 +/- 581.55 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+6.997754e+03, -2.013720e+03, -2.130687e+03, +4.115167e+04, +1.625013e+04, -5.139199e+03
-2.013720e+03, +5.309818e+03, -7.056441e+02, -7.283737e+03, +1.079195e+04, -1.681790e+04
-2.130687e+03, -7.056441e+02, +3.158223e+03, -1.210493e+04, -2.431732e+04, +2.280980e+04
+4.115167e+04, -7.283737e+03, -1.210493e+04, +4.180105e+05, +1.760959e+05, -8.442212e+04
+1.625013e+04, +1.079195e+04, -2.431732e+04, +1.760959e+05, +2.422361e+05, -2.196664e+05
-5.139199e+03, -1.681790e+04, +2.280980e+04, -8.442212e+04, -2.196664e+05, +2.277231e+05

Timing offsets (from input data):
    UK003F: 0.000000 s
    UK003Y: 0.000697 s

Reference point on the trajectory:
  Time: 2021-10-15 03:12:20.889202 UTC
  Lon     = +-5.258557 +/- 0.0012 deg
  Lat     = +52.257068 +/- 0.0006 deg
  Lat geo = +52.073565 +/- 0.0006 deg
  Ht      =  101785.00 +/- 44.56 m

  JD dynamic   = 2459502.634375847410 
  LST apparent = 66.7056160189 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 121.91989 +/- 0.6118 deg
  Dec       = +17.48748 +/- 0.4516 deg
  Azimuth   = 107.45765 +/- 0.7683 deg
  Elevation = +34.79924 +/- 0.3715 deg
  Vavg      =  66.92481 +/- 0.1478 km/s
  Vinit     =  67.05230 +/- 0.2550 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 122.06749 +/- 0.6118 deg
  Dec       = +17.42651 +/- 0.4516 deg
  Azimuth   = 107.36762 +/- 0.7683 deg
  Elevation = +34.66483 +/- 0.3715 deg
  Vavg      =  67.15209 +/- 0.1478 km/s
  Vinit     =  67.27958 +/- 0.2550 km/s
Radiant (geocentric, J2000):
  R.A.   = 121.87668 +/- 0.6136 deg
  Dec    = +17.22375 +/- 0.4529 deg
  Vg     =  66.12666 +/- 0.2585 km/s
  Vinf   =  67.05230 +/- 0.2550 km/s
  Zc     =  55.14590 +/- 0.3719 deg
  Zg     =  55.56179 +/- 0.3721 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 120.33578 +/- 0.5351 deg
  Bg     =  -2.92020 +/- 0.5138 deg
  Vh     =  36.81761 +/- 0.3080 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 126.58410 +/- 0.9236 deg
  Bh     =  -5.24847 +/- 0.9126 deg
  Vh_x   =  21.85137 +/- 0.6124 km/s
  Vh_y   = -29.43996 +/- 0.2633 km/s
  Vh_z   =   3.36789 +/- 0.6017 km/s
Orbit:
  La Sun = 201.694124 +/- 0.0000 deg
  a      =   2.094007 +/- 0.1431 AU
  e      =   0.567309 +/- 0.0251
  i      = 174.570333 +/- 0.9386 deg
  peri   = 318.369392 +/- 1.9455 deg
  node   =  21.697699 +/- 0.0004 deg
  Pi     = 340.067091 +/- 1.9452 deg
  q      =   0.906057 +/- 0.0102 AU
  f      =  41.632503 +/- 1.9459 deg
  M      =  10.105624 +/- 0.8964 deg
  Q      =   3.281956 +/- 0.2902 AU
  n      =   0.325265 +/- 0.0251 deg/day
  T      =   3.030175 +/- 0.3298 years
  Last perihelion JD = 2459471.565454 (2021-09-14 01:34:15.215353) +/- 1.0911 days
  Tj     =   1.445270 +/- 0.1404
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +6.421109e-04, -1.522945e-04, -2.632342e-03, -6.939759e-07, -1.834455e-02, -3.661129e-03
q   , -1.522945e-04, +1.177154e-04, +1.091078e-02, -3.090711e-06, +2.185788e-02, -7.470749e-03
Tp  , -2.632342e-03, +1.091078e-02, +1.314041e+00, -4.010613e-04, +2.288603e+00, -1.031213e+00
node, -6.939759e-07, -3.090711e-06, -4.010613e-04, +1.417167e-07, -6.722425e-04, +3.540750e-04
peri, -1.834455e-02, +2.185788e-02, +2.288603e+00, -6.722425e-04, +4.286605e+00, -1.679264e+00
i   , -3.661129e-03, -7.470749e-03, -1.031213e+00, +3.540750e-04, -1.679264e+00, +9.353134e-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: UK003F
  Avg. res. = 4.184e-06 s
  Stddev    = 2.05e-03 s

Begin point on the trajectory:
  Lon =    -5.256935 +/- 0.0008 deg
  Lat =    52.256755 +/- 0.0006 deg
  Ht  = 101866.98 +/- 22.51 m
End point on the trajectory:
  Lon =    -5.411257 +/- 0.0010 deg
  Lat =    52.286256 +/- 0.0008 deg
  Ht  = 94133.18 +/- 25.59 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
    UK003F,   False,    -1.802002,    51.351948,  130.00,   0.000000,   0.000000,   101866.98,    94133.18,          0.015853,     77.92,      6.82,             123.61, 1.0000,    True,    True, {"ff_name": "FF_UK003F_20211015_031213_746_0843776.fits"}
    UK003Y,   False,    -3.059440,    54.994170,   18.00,   0.000000,   0.000000,   100425.07,    94305.51,          0.011813,     12.07,     72.09,              86.00, 1.0000,    True,    True, {"ff_name": "FF_UK003Y_20211015_031216_540_0839936.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,     UK003F,       0,  0.000000, 2459502.633575106505, 334.40351,  30.67288,              294.27834,  20.15230,       294.25334,       20.15394,    334.40351,     +30.67288,     334.42522,      +30.65857,  1571751.74,  3650836.17,  5100936.86,      52.256755,       -5.256935,  101866.98,  279859.02,       0.00,              143.65,   618.79,      0.00,           64787.57,      9.95,    114.47,          84.69,  +2.63,  +0.40
  1,     UK003F,       0,  0.040336, 2459502.633575573564, 334.15455,  30.33005,              294.20854,  19.75325,       294.22281,       19.75233,    334.15455,     +30.33005,     334.14232,      +30.33821,  1572931.64,  3648942.06,  5100233.79,      52.261852,       -5.283531,  100531.94,  281136.41,    2339.69,             2196.04,   -33.44,  58005.06,           64787.57,     -5.77,    -65.81,          48.47,  +1.13,  -1.11
  2,     UK003F,       0,  0.080744, 2459502.633576041088, 333.81264,  29.95663,              294.18357,  19.27753,       294.18707,       19.27731,    333.81264,     +29.95663,     333.80993,      +29.95863,  1574341.71,  3646678.44,  5099393.56,      52.267938,       -5.315304,   98937.20,  282679.04,    5135.80,             4992.15,    53.22,  69197.00,           64787.57,     -1.42,    -16.27,          11.92,  +0.61,  -1.65
  3,     UK003F,       0,  0.121124, 2459502.633576508611, 333.51688,  29.59045,              294.13412,  18.83278,       294.15367,       18.83151,    333.51688,     +29.59045,     333.50035,      +29.60162,  1575679.12,  3644531.46,  5098596.63,      52.273705,       -5.345470,   97425.37,  284160.53,    7787.83,             7644.18,    -2.33,  65676.77,           64787.57,     -8.06,    -91.67,          66.79,  +0.61,  -1.66
  4,     UK003F,       0,  0.161504, 2459502.633576975670, 333.20830,  29.23025,              294.09990,  18.38451,       294.12028,       18.38319,    333.20830,     +29.23025,     333.19120,      +29.24189,  1577038.42,  3642349.34,  5097786.66,      52.279562,       -5.376150,   95889.51,  285683.63,   10483.28,            10339.62,   -14.45,  66751.94,           65416.35,     -8.47,    -96.29,          69.79,  +1.05,  -1.23
  5,     UK003F,       0,  0.201944, 2459502.633577443659, 332.83731,  28.83820,              294.08967,  17.87575,       294.08285,       17.87620,    332.83731,     +28.83820,     332.84410,      +28.83431,  1578593.67,  3639852.67,  5096859.93,      52.286256,       -5.411257,   94133.18,  287446.13,   13567.27,            13423.61,   357.94,  76260.91,           67147.65,      2.84,     32.50,          23.41,  +2.12,  -0.17
  0,     UK003Y,       0,  0.039271, 2459502.633575553074,  41.93141, -16.51798,              206.74399,  14.90843,       206.74581,       14.91092,     41.93141,     -16.51798,      41.93050,      -16.51511,  1573026.12,  3648790.38,  5100177.49,      52.262260,       -5.285640,  100425.07,  354918.26,       0.00,             2383.39,   225.30,      0.00,           64877.25,    -18.67,     -3.12,          11.00,  +1.32,  -1.43
  1,     UK003Y,       0,  0.079523, 2459502.633576018736,  41.54008, -16.65843,              207.07802,  14.67162,       207.08426,       14.68014,     41.54008,     -16.65843,      41.53677,      -16.64860,  1574274.98,  3646785.57,  5099433.33,      52.267650,       -5.313799,   99012.66,  354749.49,    2476.43,             4859.82,     2.74,  61523.22,           64877.25,    -63.75,    -10.65,          37.58,  +0.53,  -2.22
  2,     UK003Y,       0,  0.119779, 2459502.633576484863,  41.10160, -16.78172,              207.46027,  14.43782,       207.45279,       14.42764,     41.10160,     -16.78172,      41.10644,      -16.79350,  1575637.11,  3644598.90,  5098621.67,      52.273524,       -5.344519,   97472.84,  354584.73,    5177.49,             7560.88,     4.54,  67097.07,           64877.25,     76.23,     12.76,          44.96,  +0.20,  -2.55
  3,     UK003Y,       0,  0.160043, 2459502.633576950990,  40.68080, -16.91944,              207.82000,  14.19354,       207.81091,       14.18121,     40.68080,     -16.91944,      40.68670,      -16.93375,  1576962.44,  3642471.32,  5097831.94,      52.279234,       -5.374435,   95975.35,  354444.35,    7805.56,            10188.95,   -67.18,  65270.94,           64877.25,     92.48,     15.49,          54.57,  +1.11,  -1.64
  4,     UK003Y,       0,  0.200335, 2459502.633577417117,  40.21190, -17.07620,              208.21798,  13.91678,       208.20963,       13.90546,     40.21190,     -17.07620,      40.21751,      -17.08935,  1578441.02,  3640097.71,  5096950.89,      52.285600,       -5.407817,   94305.51,  354310.25,   10737.54,            13120.93,   163.13,  72768.31,           66570.18,     84.88,     14.22,          50.10,  +2.55,  -0.20

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.