Orbital Analysis for matched events on 20211103_031730.116_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 39.73° Bg -22.12° Vg 18.69km/s
mass 0.01848g, abs. mag 1.6
best visual mag 1.6
Path Details
------------
start -4.30° 51.08° 84.81km
end   -4.27° 51.10° 83.21km

Orbit Details
-------------
Semimajor axis 1.75A.U., eccentricity 0.62, inclination 13.08°, Period 2.32Y, LA Sun 220.62°, last Perihelion 2019-08-24

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: 2459521.637154120952
Time: 2021-11-03 03:17:30.116050 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK001K and UK0024
 Convergence angle = 54.37334 deg
 R.A. =  47.12497  Dec =  -1.51500 deg

Best intersection: Stations UK001K and UK0024 with Qconv = 54.37 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =    164486.65 +/- 60.65 m
 Y =   4064733.33 +/- 86.97 m
 Z =   5005467.92 +/- 31.38 m
 Vx =    14845.45 +/- 3832.65 m/s
 Vy =    15883.65 +/- 4091.86 m/s
 Vz =     -585.61 +/- 186.36 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+3.380036e+03, +4.642394e+03, +1.643144e+03, +1.960274e+05, +2.132828e+05, -1.770622e+02
+4.642394e+03, +6.456735e+03, +2.232515e+03, +2.663620e+05, +2.909715e+05, -8.263926e+02
+1.643144e+03, +2.232515e+03, +8.582030e+02, +8.749225e+04, +9.478837e+04, +1.016183e+03
+1.960274e+05, +2.663620e+05, +8.749225e+04, +2.435983e+07, +2.610301e+07, -8.980844e+05
+2.132828e+05, +2.909715e+05, +9.478837e+04, +2.610301e+07, +2.799890e+07, -9.573408e+05
-1.770622e+02, -8.263926e+02, +1.016183e+03, -8.980844e+05, -9.573408e+05, +8.654294e+04

Timing offsets (from input data):
    UK001K: 0.000000 s
    UK0024: 0.001526 s

Reference point on the trajectory:
  Time: 2021-11-03 03:17:30.116050 UTC
  Lon     = +-4.300609 +/- 0.0007 deg
  Lat     = +51.084194 +/- 0.0004 deg
  Lat geo = +50.898438 +/- 0.0004 deg
  Ht      =   84815.82 +/- 72.08 m

  JD dynamic   = 2459521.637954861857 
  LST apparent = 87.6826889467 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  46.93503 +/- 0.4393 deg
  Dec       =  -1.54292 +/- 0.8590 deg
  Azimuth   = 227.10817 +/- 0.3985 deg
  Elevation = +27.05075 +/- 0.8976 deg
  Vavg      =  20.62424 +/- 0.4524 km/s
  Vinit     =  21.74903 +/- 5.4386 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  47.53260 +/- 0.4393 deg
  Dec       =  -1.55669 +/- 0.8590 deg
  Azimuth   = 226.50419 +/- 0.3985 deg
  Elevation = +27.31217 +/- 0.8976 deg
  Vavg      =  20.43185 +/- 0.4524 km/s
  Vinit     =  21.55665 +/- 5.4386 km/s
Radiant (geocentric, J2000):
  R.A.   =  44.20744 +/- 0.5855 deg
  Dec    =  -6.31137 +/- 1.2155 deg
  Vg     =  18.69302 +/- 0.6392 km/s
  Vinf   =  21.74903 +/- 0.5483 km/s
  Zc     =  62.82290 +/- 0.8973 deg
  Zg     =  68.10710 +/- 1.2960 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  39.72942 +/- 0.9446 deg
  Bg     = -22.11805 +/- 1.0253 deg
  Vh     =  35.81638 +/- 0.1691 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 340.98640 +/- 1.2187 deg
  Bh     = -11.33265 +/- 0.1938 deg
  Vh_x   = -33.20206 +/- 0.3945 km/s
  Vh_y   =  11.44120 +/- 0.6592 km/s
  Vh_z   =   7.03810 +/- 0.0979 km/s
Orbit:
  La Sun = 220.623671 +/- -0.0000 deg
  a      =   1.754781 +/- 0.0416 AU
  e      =   0.622990 +/- 0.0178
  i      =  13.075503 +/- 0.1567 deg
  peri   =  82.408664 +/- 1.9834 deg
  node   =  40.629270 +/- 0.0000 deg
  Pi     = 123.037934 +/- 1.9834 deg
  q      =   0.661569 +/- 0.0182 AU
  f      = 277.587260 +/- 1.9834 deg
  M      = 339.811416 +/- 0.8348 deg
  Q      =   2.847992 +/- 0.0964 AU
  n      =   0.424004 +/- 0.0153 deg/day
  T      =   2.324529 +/- 0.0826 years
  Last perihelion JD = 2458720.203166 (2019-08-24 16:52:33.561115) +/- 30.3991 days
  Tj     =   3.850651 +/- 0.0749
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +2.065293e-04, -1.644123e-04, -3.798112e-01, +1.979720e-07, +1.476359e-02, -6.259670e-04
q   , -1.644123e-04, +1.511988e-04, +2.614655e-01, -2.516321e-08, -1.483465e-02, +7.705621e-05
Tp  , -3.798112e-01, +2.614655e-01, +7.830244e+02, -6.484475e-04, -2.093665e+01, +2.056043e+00
node, +1.979720e-07, -2.516321e-08, -6.484475e-04, +2.435444e-09, -6.164499e-06, -7.694349e-06
peri, +1.476359e-02, -1.483465e-02, -2.093665e+01, -6.164499e-06, +1.523240e+00, +1.987505e-02
i   , -6.259670e-04, +7.705621e-05, +2.056043e+00, -7.694349e-06, +1.987505e-02, +2.431552e-02

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = -0.191296
 a2 = 41.294349

Mean time residuals from time vs. length:
  Station with reference time: UK001K
  Avg. res. = 9.587e-07 s
  Stddev    = 9.79e-04 s

Begin point on the trajectory:
  Lon =    -4.300430 +/- 0.0006 deg
  Lat =    51.084299 +/- 0.0003 deg
  Ht  = 84806.97 +/- 63.98 m
End point on the trajectory:
  Lon =    -4.268844 +/- 0.0002 deg
  Lat =    51.103176 +/- 0.0000 deg
  Ht  = 83211.08 +/- 36.69 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
    UK001K,   False,    -3.557111,    51.483925,   37.50,   0.000000,   0.000000,    84806.97,    83316.26,          0.005342,      7.16,      6.93,              23.91, 1.0000,    True,    True, {"ff_name": "FF_UK001K_20211103_031726_556_0886016.fits"}
    UK0024,   False,    -2.949770,    50.877440,   82.00,   0.137853,  42.512555,    84713.98,    83211.08,          0.015944,     35.31,      6.21,              47.88, 1.0000,    True,    True, {"ff_name": "FF_UK0024_20211103_031720_621_0897024.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,     UK001K,       0,  0.000000, 2459521.637154120952,  57.35598,  20.45857,              229.68777,  50.64520,       229.68275,       50.64544,     57.35598,     +20.45857,      57.35901,      +20.45716,   164473.36,  4064719.12,  5005468.45,      51.084299,       -4.300430,   84806.97,  109152.00,       0.00,               19.47,     1.18,      0.00,           21965.57,      4.23,      4.37,          11.49,  +1.93,  +1.74
  1,     UK001K,       0,  0.039852, 2459521.637154582422,  57.44034,  20.61762,              229.70764,  50.82234,       229.71084,       50.82219,     57.44034,     +20.61762,      57.43854,      +20.61851,   163904.53,  4064110.50,  5005490.89,      51.088780,       -4.292937,   84428.02,  108398.32,     833.36,              852.82,   -32.21,  20911.28,           21965.57,     -2.67,     -2.75,           7.30,  +1.62,  +1.44
  2,     UK001K,       0,  0.079688, 2459521.637155043427,  57.53295,  20.79855,              229.73505,  51.02220,       229.74203,       51.02186,     57.53295,     +20.79855,      57.52903,      +20.80050,   163272.57,  4063434.35,  5005515.82,      51.093758,       -4.284591,   84007.10,  107561.60,    1759.19,             1778.66,    27.24,  23241.24,           21965.57,     -5.76,     -5.94,          15.86,  +2.52,  +2.36
  3,     UK001K,       0,  0.119536, 2459521.637155504432,  57.61943,  20.96670,              229.76049,  51.20807,       229.77187,       51.20752,     57.61943,     +20.96670,      57.61303,      +20.96986,   162692.69,  4062813.91,  5005538.69,      51.098326,       -4.276944,   83620.95,  106795.46,    2608.74,             2628.21,    10.13,  21319.70,           21965.57,     -9.28,     -9.57,          25.74,  +2.38,  +2.24
  4,     UK001K,       0,  0.159412, 2459521.637155965902,  57.67115,  21.10831,              229.80943,  51.35451,       229.79730,       51.35510,     57.67115,     +21.10831,      57.67910,      +21.10495,   162235.09,  4062324.32,  5005556.74,      51.101931,       -4.270942,   83316.26,  106192.84,    3279.14,             3298.60,  -186.74,  16811.95,           20911.96,      9.80,     10.12,          27.37,  +4.33,  +4.20
  0,     UK0024,       0,  0.010398, 2459521.637154201977,  18.62054,  38.35682,              284.24931,  40.33830,       284.24917,       40.33310,     18.62054,     +38.35682,      18.61545,      +38.35349,   164333.79,  4064569.78,  5005473.95,      51.085398,       -4.298580,   84713.98,  129600.18,       0.00,              223.95,   -20.48,      0.00,           21568.15,     -2.05,    -11.59,          18.73,  +2.28,  +1.72
  1,     UK0024,       0,  0.050398, 2459521.637154664844,  18.33690,  38.55811,              284.63746,  40.29087,       284.63852,       40.32309,     18.33690,     +38.55811,      18.36860,      +38.57887,   163714.10,  4063906.76,  5005498.40,      51.090280,       -4.290402,   84301.18,  128999.26,     907.85,             1131.80,    17.41,  22696.30,           21568.15,     12.57,     71.47,         116.03,  +2.37,  +1.82
  2,     UK0024,       0,  0.090342, 2459521.637155127246,  18.12751,  38.78725,              285.00598,  40.30617,       285.00621,       40.31223,     18.12751,     +38.78725,      18.13379,      +38.79117,   163133.79,  4063285.87,  5005521.29,      51.094851,       -4.282751,   83914.68,  128440.22,    1758.02,             1981.97,    -1.16,  21284.10,           21568.15,      2.36,     13.40,          21.85,  +2.62,  +2.08
  3,     UK0024,       0,  0.130314, 2459521.637155590113,  17.88854,  38.99261,              285.36852,  40.28855,       285.36903,       40.30030,     17.88854,     +38.99261,      17.90057,      +39.00022,   162565.81,  4062678.16,  5005543.70,      51.099326,       -4.275265,   83536.46,  127896.24,    2590.14,             2814.08,   -38.40,  20817.39,           21568.15,      4.55,     25.83,          42.30,  +3.44,  +2.91
  4,     UK0024,       0,  0.170282, 2459521.637156052515,  17.69082,  39.17713,              285.68307,  40.28307,       285.68333,       40.28856,     17.69082,     +39.17713,      17.69687,      +39.18070,   162077.09,  4062155.27,  5005562.97,      51.103176,       -4.268844,   83211.08,  127431.77,    3306.13,             3530.08,  -191.67,  17914.08,           20752.80,      2.12,     12.03,          19.78,  +4.65,  +4.12

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.