Orbital Analysis for matched events on 20211015_191353.230_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 132.77° Bg 58.17° Vg 47.95km/s
mass 0.01978g, abs. mag 0.2
best visual mag 1.5
Path Details
------------
start -2.79° 53.34° 106.76km
end   -2.73° 53.23° 97.25km

Orbit Details
-------------
Semimajor axis 70.67A.U., eccentricity 0.99, inclination 81.41°, Period 594.09Y, LA Sun 202.36°, last Perihelion 2021-09-29

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: 2459503.301310538314
Time: 2021-10-15 19:13:53.270542 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002Z and UK0042
 Convergence angle = 39.20701 deg
 R.A. = 178.68774  Dec = +69.38653 deg

Best intersection: Stations UK002Z and UK0042 with Qconv = 39.21 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   2504781.31 +/- 42.44 m
 Y =  -2963303.56 +/- 78.70 m
 Z =   5180551.43 +/- 114.27 m
 Vx =   -17251.70 +/- 218.58 m/s
 Vy =      398.89 +/- 339.39 m/s
 Vz =    46096.42 +/- 213.07 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+3.096922e+03, +1.631759e+03, -4.223688e+02, +9.465343e+03, +8.933718e+03, +7.194045e+03
+1.631759e+03, +3.817278e+03, +5.536809e+03, +1.249514e+04, +1.639625e+04, +1.167910e+04
-4.223688e+02, +5.536809e+03, +1.239858e+04, +1.537928e+04, +2.417044e+04, +1.605259e+04
+9.465343e+03, +1.249514e+04, +1.537928e+04, +5.318330e+04, +6.546077e+04, +4.742333e+04
+8.933718e+03, +1.639625e+04, +2.417044e+04, +6.546077e+04, +9.127935e+04, +6.534739e+04
+7.194045e+03, +1.167910e+04, +1.605259e+04, +4.742333e+04, +6.534739e+04, +4.838618e+04

Timing offsets (from input data):
    UK002Z: 0.000777 s
    UK0042: 0.000000 s

Reference point on the trajectory:
  Time: 2021-10-15 19:13:53.270542 UTC
  Lon     = +-2.800525 +/- 0.0009 deg
  Lat     = +53.349210 +/- 0.0010 deg
  Lat geo = +53.167804 +/- 0.0010 deg
  Ht      =  108031.12 +/- 64.33 m

  JD dynamic   = 2459503.302111742552 
  LST apparent = 310.2067181068 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 178.67544 +/- 1.0875 deg
  Dec       = +69.47648 +/- 0.3288 deg
  Azimuth   = 340.60655 +/- 0.6147 deg
  Elevation = +37.77823 +/- 0.1567 deg
  Vavg      =  49.36706 +/- 0.0864 km/s
  Vinit     =  49.22053 +/- 0.1190 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 178.04485 +/- 1.0875 deg
  Dec       = +69.70661 +/- 0.3288 deg
  Azimuth   = 341.00056 +/- 0.6147 deg
  Elevation = +37.84467 +/- 0.1567 deg
  Vavg      =  49.29356 +/- 0.0864 km/s
  Vinit     =  49.14703 +/- 0.1190 km/s
Radiant (geocentric, J2000):
  R.A.   = 177.22646 +/- 1.0846 deg
  Dec    = +68.98775 +/- 0.3288 deg
  Vg     =  47.95306 +/- 0.1222 km/s
  Vinf   =  49.22053 +/- 0.1190 km/s
  Zc     =  52.39291 +/- 0.1566 deg
  Zg     =  53.12825 +/- 0.1605 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 132.76624 +/- 0.9218 deg
  Bg     = +58.16625 +/- 0.1814 deg
  Vh     =  42.03565 +/- 0.1293 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 238.85949 +/- 0.5465 deg
  Bh     = +75.74402 +/- 0.5648 deg
  Vh_x   =   5.35314 +/- 0.2248 km/s
  Vh_y   =   8.85984 +/- 0.3695 km/s
  Vh_z   = -40.74117 +/- 0.1177 km/s
Orbit:
  La Sun = 202.355848 +/- 0.0000 deg
  a      =  70.669871 +/- 428.8248 AU
  e      =   0.986448 +/- 0.0117
  i      =  81.405011 +/- 0.3794 deg
  peri   = 157.008837 +/- 0.8516 deg
  node   = 202.355431 +/- 0.0000 deg
  Pi     = 359.364268 +/- 0.8516 deg
  q      =   0.957700 +/- 0.0031 AU
  f      =  22.989955 +/- 0.8516 deg
  M      =   0.026439 +/- nan deg
  Q      = 140.382042 +/- 857.6501 AU
  n      =   0.001659 +/- 0.0013 deg/day
  T      = 594.089786 +/- nan years
  Last perihelion JD = 2459487.365883 (2021-09-29 20:46:52.285303) +/- 0.5363 days
  Tj     =   0.254358 +/- 0.0589
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +1.481394e-05, -7.819903e-06, -1.301134e-03, +1.767786e-08, -2.134855e-03, -8.316867e-04
q   , -7.819903e-06, +1.079434e-05, +1.879102e-03, -2.427242e-08, +2.995651e-03, +1.139283e-03
Tp  , -1.301134e-03, +1.879102e-03, +3.276074e-01, -4.204282e-06, +5.218359e-01, +1.973261e-01
node, +1.767786e-08, -2.427242e-08, -4.204282e-06, +6.012913e-11, -6.710580e-06, -2.822090e-06
peri, -2.134855e-03, +2.995651e-03, +5.218359e-01, -6.710580e-06, +8.316305e-01, +3.149706e-01
i   , -8.316867e-04, +1.139283e-03, +1.973261e-01, -2.822090e-06, +3.149706e-01, +1.324531e-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: UK0042
  Avg. res. = 5.509e-06 s
  Stddev    = 2.35e-03 s

Begin point on the trajectory:
  Lon =    -2.792481 +/- 0.0007 deg
  Lat =    53.335531 +/- 0.0007 deg
  Ht  = 106759.51 +/- 44.99 m
End point on the trajectory:
  Lon =    -2.733647 +/- 0.0008 deg
  Lat =    53.232924 +/- 0.0007 deg
  Ht  = 97251.08 +/- 42.81 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
    UK002Z,   False,    -0.382830,    53.537790,   34.00,   0.000000,   0.000000,   104145.56,    99211.55,          0.009387,     19.55,     24.76,              61.43, 1.0000,    True,    True, {"ff_name": "FF_UK002Z_20211015_191349_479_0140544.fits"}
    UK0042,   False,    -4.169906,    52.265619,  152.00,   0.000000,   0.000000,   106759.51,    97251.08,          0.017828,     28.42,     49.46,              45.94, 1.0000,    True,    True, {"ff_name": "FF_UK0042_20211015_191352_141_0115200.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,     UK002Z,       0,  0.129717, 2459503.301312039141, 248.70808,  20.69222,              261.81756,  31.91263,       261.80712,       31.92831,    248.70808,     +20.69222,     248.72652,      +20.69884,  2507005.49, -2963354.99,  5174608.44,      53.307381,       -2.776316,  104145.56,  192967.61,       0.00,             6345.76,    -0.74,      0.00,           48686.58,    -47.61,     37.59,          64.84,  +2.73,  +1.30
  1,     UK002Z,       0,  0.169885, 2459503.301312503871, 248.92652,  20.20075,              261.26732,  31.65831,       261.26375,       31.66363,    248.92652,     +20.20075,     248.93330,      +20.20299,  2507702.67, -2963371.11,  5172745.57,      53.294258,       -2.768782,  102928.37,  192104.20,    1989.13,             8334.89,    11.29,  49520.18,           48686.58,    -16.11,     12.73,          22.05,  +1.94,  +0.52
  2,     UK002Z,       0,  0.210049, 2459503.301312969066, 249.14234,  19.71827,              260.72794,  31.40816,       260.73267,       31.40117,    249.14234,     +19.71827,     249.13523,      +19.71533,  2508382.00, -2963386.82,  5170930.43,      53.281466,       -2.761447,  101742.71,  191279.24,    3927.29,            10273.05,   -27.44,  48256.21,           48686.58,     21.14,    -16.70,          29.06,  +1.63,  +0.22
  3,     UK002Z,       0,  0.250229, 2459503.301313433796, 249.33619,  19.22086,              260.19868,  31.13214,       260.19795,       31.13321,    249.33619,     +19.22086,     249.33846,      +19.22131,  2509063.99, -2963402.59,  5169108.14,      53.268618,       -2.754084,  100552.74,  190467.18,    5873.08,            12218.84,   -59.33,  48426.84,           48686.58,     -3.23,      2.55,           4.46,  +1.64,  +0.24
  4,     UK002Z,       0,  0.290421, 2459503.301313898992, 249.57058,  18.66042,              259.59115,  30.82892,       259.59321,       30.82593,    249.57058,     +18.66042,     249.56838,      +18.65916,  2509832.90, -2963420.36,  5167053.61,      53.254127,       -2.745763,   99211.55,  189570.14,    8066.85,            14412.61,   156.17,  54582.24,           49826.03,      9.00,     -7.11,          12.48,  +1.83,  +0.44
  5,     UK002Z,       1,  0.330565, 2459503.301314363722, 249.72452,  18.25992,              259.17045,  30.60329,       259.16825,       30.60646,    249.72452,     +18.25992,     249.72953,      +18.26126,  2510372.23, -2963432.84,  5165612.55,      53.243959,       -2.739979,   98271.06,  188956.35,    9605.58,            15951.34,  -281.01,  38330.26,           48510.52,     -9.58,      7.56,          13.32,  +5.28,  +3.90
  0,     UK0042,       1,  0.000000, 2459503.301310538314,  58.24196,  58.36075,               36.90425,  34.51682,        36.88707,       34.47859,     58.24196,     +58.36075,      58.31226,      +58.34337,  2504757.76, -2963303.02,  5180614.36,      53.349652,       -2.800619,  108072.28,  187387.55,       0.00,               67.19,   105.41,      0.00,           50391.89,    115.61,    -66.46,         146.79,  +5.78,  +4.42
  1,     UK0042,       0,  0.040028, 2459503.301311001647,  57.87088,  57.93781,               37.43295,  34.35227,        37.41619,       34.31550,     57.87088,     +57.93781,      57.93816,      +57.92126,  2505508.98, -2963320.39,  5178607.11,      53.335531,       -2.792481,  106759.51,  185878.80,    2143.28,             2076.09,   144.12,  53544.53,           50391.89,    110.52,    -63.53,         141.46,  +3.83,  +2.48
  2,     UK0042,       0,  0.080104, 2459503.301311465446,  57.65668,  57.55279,               37.85793,  34.15753,        37.86584,       34.17464,     57.65668,     +57.55279,      57.62597,      +57.56043,  2506140.96, -2963335.00,  5176918.47,      53.323646,       -2.785663,  105655.42,  184618.26,    3946.37,             3879.18,   -25.36,  44991.74,           50391.89,    -51.20,     29.40,          65.96,  +3.19,  +1.86
  3,     UK0042,       0,  0.120112, 2459503.301311928313,  57.23539,  57.11994,               38.41989,  34.00776,        38.41597,       33.99939,     57.23539,     +57.11994,      57.25097,      +57.11623,  2506904.52, -2963352.65,  5174878.23,      53.309281,       -2.777392,  104321.87,  183108.53,    6124.88,             6057.69,   183.94,  54451.94,           50391.89,     24.90,    -14.30,          32.35,  +2.31,  +1.00
  4,     UK0042,       0,  0.160132, 2459503.301312391646,  56.91599,  56.74410,               38.88714,  33.86167,        38.88103,       33.84878,     56.91599,     +56.74410,      56.93971,      +56.73845,  2507543.55, -2963367.43,  5173170.75,      53.297253,       -2.770499,  103206.15,  181854.41,    7948.08,             7880.89,    37.34,  45557.17,           49651.06,     38.11,    -21.89,          49.85,  +1.94,  +0.64
  5,     UK0042,       0,  0.200172, 2459503.301312854979,  56.63656,  56.35809,               39.34469,  33.69408,        39.34563,       33.69606,     56.63656,     +56.35809,      56.63388,      +56.35895,  2508175.56, -2963382.04,  5171482.02,      53.285354,       -2.763686,  102102.97,  180623.47,    9751.26,             9684.07,  -130.27,  45034.47,           48779.70,     -5.81,      3.34,           7.65,  +1.58,  +0.30
  6,     UK0042,       0,  0.240196, 2459503.301313318312,  56.24930,  55.88447,               39.92792,  33.50720,        39.92548,       33.50217,     56.24930,     +55.88447,      56.25917,      +55.88231,  2508954.60, -2963400.06,  5169400.45,      53.270679,       -2.755250,  100743.61,  179120.85,   11973.91,            11906.72,   122.38,  55532.97,           49191.85,     14.70,     -8.45,          19.52,  +1.51,  +0.24
  7,     UK0042,       0,  0.280208, 2459503.301313781645,  55.91634,  55.48755,               40.42156,  33.35534,        40.41238,       33.33664,     55.91634,     +55.48755,      55.95028,      +55.47957,  2509602.24, -2963415.03,  5167669.94,      53.258475,       -2.748267,   99613.84,  177882.02,   13821.70,            13754.51,     0.75,  46180.81,           49112.82,     54.41,    -31.26,          72.76,  +2.16,  +0.91
  8,     UK0042,       0,  0.320260, 2459503.301314244978,  55.69228,  55.10134,               40.85385,  33.16886,        40.86043,       33.18210,     55.69228,     +55.10134,      55.67054,      +55.10694,  2510192.91, -2963428.69,  5166091.67,      53.247340,       -2.741915,   98583.72,  176760.82,   15506.94,            15439.75,  -285.39,  42076.32,           48606.56,    -38.37,     22.03,          51.63,  +2.61,  +1.37
  9,     UK0042,       0,  0.360288, 2459503.301314708311,  55.32138,  54.61288,               41.44367,  32.96920,        41.44726,       32.97635,     55.32138,     +54.61288,      55.31053,      +54.61588,  2510957.30, -2963446.36,  5164049.23,      53.232924,       -2.733647,   97251.08,  175325.09,   17687.80,            17620.61,   -74.73,  54483.24,           48669.37,    -20.58,     11.82,          27.92,  +3.92,  +2.70

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.