Orbital Analysis for matched events on 20211103_040146.082_UK

Back to daily index
Summary for Event
-----------------
shower ID 8 ORI
Lg 102.02° Bg -10.89° Vg 62.91km/s
mass 0.00650g, abs. mag 0.8
best visual mag 1.1
Path Details
------------
start -2.73° 51.77° 107.97km
end   -2.73° 51.84° 98.65km

Orbit Details
-------------
Semimajor axis 5.55A.U., eccentricity 0.92, inclination 153.83°, Period 13.07Y, LA Sun 220.65°, last Perihelion 2008-11-16

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: 2459521.667894470505
Time: 2021-11-03 04:01:46.082252 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK0006 and UK001Z
 Convergence angle = 65.81912 deg
 R.A. = 102.76198  Dec = +12.24795 deg

Best intersection: Stations UK0006 and UK001Z with Qconv = 65.82 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   -722929.61 +/- 12.38 m
 Y =   3956452.77 +/- 31.28 m
 Z =   5071839.55 +/- 21.81 m
 Vx =   -13364.41 +/- 83.04 m/s
 Vy =    60956.01 +/- 143.22 m/s
 Vz =    13642.20 +/- 221.19 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.669100e+02, +3.983923e+01, -2.315417e+00, +8.821713e+02, +8.342873e+02, +6.236532e+01
+3.983923e+01, +1.017356e+03, +3.623177e+02, +1.411692e+03, +1.632314e+03, +2.445008e+03
-2.315417e+00, +3.623177e+02, +5.035956e+02, +2.323038e+02, +8.392573e+02, +4.165651e+03
+8.821713e+02, +1.411692e+03, +2.323038e+02, +8.765873e+03, +8.064924e+03, +1.132568e+03
+8.342873e+02, +1.632314e+03, +8.392573e+02, +8.064924e+03, +8.473111e+03, +8.295112e+03
+6.236532e+01, +2.445008e+03, +4.165651e+03, +1.132568e+03, +8.295112e+03, +5.147375e+04

Timing offsets (from input data):
    UK0006: 0.000000 s
    UK001Z: 0.000126 s
    UK003Z: 0.000000 s

Reference point on the trajectory:
  Time: 2021-11-03 04:01:46.082252 UTC
  Lon     = +-2.725175 +/- 0.0002 deg
  Lat     = +51.769757 +/- 0.0002 deg
  Lat geo = +51.585658 +/- 0.0002 deg
  Ht      =  107964.03 +/- 31.50 m

  JD dynamic   = 2459521.668695211411 
  LST apparent = 100.3549473768 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 102.36625 +/- 0.0968 deg
  Dec       = +12.33151 +/- 0.1838 deg
  Azimuth   = 176.90820 +/- 0.1491 deg
  Elevation = +50.52818 +/- 0.1839 deg
  Vavg      =  59.11191 +/- 0.0549 km/s
  Vinit     =  63.87763 +/- 0.0995 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 102.63532 +/- 0.0968 deg
  Dec       = +12.32941 +/- 0.1838 deg
  Azimuth   = 176.49515 +/- 0.1491 deg
  Elevation = +50.51649 +/- 0.1839 deg
  Vavg      =  59.12264 +/- 0.0549 km/s
  Vinit     =  63.88836 +/- 0.0995 km/s
Radiant (geocentric, J2000):
  R.A.   = 102.07214 +/- 0.0974 deg
  Dec    = +12.04406 +/- 0.1862 deg
  Vg     =  62.90626 +/- 0.1010 km/s
  Vinf   =  63.87763 +/- 0.0995 km/s
  Zc     =  39.28799 +/- 0.1839 deg
  Zg     =  39.60138 +/- 0.1862 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 102.02222 +/- 0.0987 deg
  Bg     = -10.89127 +/- 0.1852 deg
  Vh     =  40.35496 +/- 0.1135 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  79.49805 +/- 0.1123 deg
  Bh     = -17.12936 +/- 0.2987 deg
  Vh_x   =  -7.02918 +/- 0.0890 km/s
  Vh_y   = -37.91889 +/- 0.1422 km/s
  Vh_z   =  11.88575 +/- 0.1870 km/s
Orbit:
  La Sun = 220.654464 +/- -0.0000 deg
  a      =   5.549353 +/- 0.3451 AU
  e      =   0.924552 +/- 0.0044
  i      = 153.830711 +/- 0.4392 deg
  peri   = 101.717835 +/- 0.1024 deg
  node   =  40.654496 +/- 0.0000 deg
  Pi     = 142.372330 +/- 0.1024 deg
  q      =   0.418686 +/- 0.0007 AU
  f      = 258.280161 +/- 0.1024 deg
  M      = 356.987563 +/- 0.2637 deg
  Q      =  10.680020 +/- 0.6908 AU
  n      =   0.075395 +/- 0.0064 deg/day
  T      =  13.072666 +/- 1.2473 years
  Last perihelion JD = 2454786.749969 (2008-11-16 05:59:57.305104) +/- 455.7265 days
  Tj     =   0.231512 +/- 0.0553
Shower association:
  IAU No.  =    8
  IAU code =  ORI

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +2.125961e-05, -2.972628e-06, -2.175493e+00, -7.671075e-08, -4.734841e-04, +9.081848e-04
q   , -2.972628e-06, +4.692957e-07, +3.046257e-01, +1.746082e-08, +5.960048e-05, -2.074797e-04
Tp  , -2.175493e+00, +3.046257e-01, +2.244077e+05, +8.194514e-03, +4.836453e+01, -9.693166e+01
node, -7.671075e-08, +1.746082e-08, +8.194514e-03, +1.489496e-09, +8.746416e-07, -1.767617e-05
peri, -4.734841e-04, +5.960048e-05, +4.836453e+01, +8.746416e-07, +1.135893e-02, -1.026233e-02
i   , +9.081848e-04, -2.074797e-04, -9.693166e+01, -1.767617e-05, -1.026233e-02, +2.098404e-01

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.027412
 a2 = 50.390256

Mean time residuals from time vs. length:
  Station with reference time: UK0006
  Avg. res. = 4.516e-06 s
  Stddev    = 2.13e-03 s

Begin point on the trajectory:
  Lon =    -2.725173 +/- 0.0002 deg
  Lat =    51.769731 +/- 0.0001 deg
  Ht  = 107967.58 +/- 19.82 m
End point on the trajectory:
  Lon =    -2.731951 +/- 0.0002 deg
  Lat =    51.837589 +/- 0.0002 deg
  Ht  = 98648.14 +/- 17.96 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
    UK0006,   False,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,   107967.58,    98774.27,          0.014035,     32.13,     13.18,              52.69, 1.0000,    True,    True, {"ff_name": "FF_UK0006_20211103_040141_922_0975872.fits"}
    UK001Z,   False,    -2.949729,    50.877448,   82.00,   0.134712,  42.616131,   107928.91,    98648.14,          0.008828,     16.47,     15.63,              81.24, 1.0000,    True,    True, {"ff_name": "FF_UK001Z_20211103_040136_447_0963584.fits"}
    UK003Z,    True,    -1.639327,    51.011519,   64.00,  31.949314,   6.431562,   105556.32,    99641.09,          0.043593,       nan,       nan,              79.46, 0.0000,    True,    True, {"ff_name": "FF_UK003Z_20211103_040136_334_0972032.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,     UK0006,       0,  0.000000, 2459521.667894470505,  48.92097,  31.64206,              263.22321,  46.89248,       263.21096,       46.88141,     48.92097,     +31.64206,      48.91844,      +31.62836,  -722930.57,  3956457.16,  5071840.54,      51.769731,       -2.725173,  107967.58,  146746.56,       0.00,                4.60,   229.46,      0.00,           62593.93,     13.46,     32.89,          49.95,  +2.76,  +1.93
  1,     UK0006,       0,  0.040188, 2459521.667894935701,  48.12277,  31.72973,              264.00144,  46.46359,       264.00152,       46.46367,     48.12277,     +31.72973,      48.12295,      +31.72982,  -722474.58,  3954377.34,  5071375.06,      51.781962,       -2.726406,  106285.26,  145440.96,    2179.51,             2174.91,  -167.34,  54232.86,           62593.93,     -0.09,     -0.23,           0.35,  +1.58,  +0.77
  2,     UK0006,       0,  0.080404, 2459521.667895400897,  47.10345,  31.86202,              265.00440,  45.92870,       264.99633,       45.92162,     47.10345,     +31.86202,      47.10230,      +31.85306,  -721902.09,  3951766.16,  5070790.67,      51.797326,       -2.727912,  104173.54,  143829.75,    4915.84,             4911.24,     0.09,  68040.89,           62593.93,      8.60,     21.01,          32.55,  +1.58,  +0.79
  3,     UK0006,       0,  0.120620, 2459521.667895866558,  46.12479,  31.97412,              265.93947,  45.40372,       265.92953,       45.39513,     46.12479,     +31.97412,      46.12360,      +31.96314,  -721366.24,  3949322.14,  5070243.69,      51.811715,       -2.729335,  102197.41,  142353.33,    7477.00,             7472.40,    -7.66,  63685.05,           62593.93,     10.43,     25.46,          39.86,  +1.14,  +0.37
  4,     UK0006,       0,  0.160868, 2459521.667896332219,  45.11242,  32.05205,              266.85564,  44.83360,       266.87053,       44.84630,     45.11242,     +32.05205,      45.11543,      +32.06845,  -720826.77,  3946861.57,  5069693.00,      51.826211,       -2.730768,  100208.30,  140898.26,   10055.51,            10050.91,    -0.10,  64065.52,           63179.21,    -15.41,    -37.57,          59.45,  +1.61,  +0.87
  5,     UK0006,       0,  0.201044, 2459521.667896797415,  44.36945,  32.11756,              267.52932,  44.42048,       267.54979,       44.43776,     44.36945,     +32.11756,      44.37331,      +32.14005,  -720437.78,  3945087.37,  5069295.93,      51.836668,       -2.731849,   98774.27,  139871.46,   11914.75,            11910.15,  -707.20,  46277.41,           60934.28,    -20.98,    -51.11,          81.48,  +3.05,  +2.32
  0,     UK001Z,       0,  0.002305, 2459521.667894495651, 224.58509,  82.57759,                8.87223,  46.31778,         8.86884,       46.31810,    224.58509,     +82.57759,     224.59519,      +82.57957,  -722920.09,  3956409.36,  5071829.84,      51.770012,       -2.725206,  107928.91,  148013.29,       0.00,               45.49,   123.13,      0.00,           64468.85,     -4.21,      4.44,           8.53,  +3.29,  +2.44
  1,     UK001Z,       0,  0.043109, 2459521.667894967832, 230.16067,  82.02113,                8.70549,  45.39410,         8.68329,       45.39619,    230.16067,     +82.02113,     230.23210,      +82.03337,  -722412.83,  3954095.70,  5071312.03,      51.783618,       -2.726562,  106057.47,  147681.17,    2424.56,             2470.05,   -58.78,  59419.55,           64468.85,    -27.91,     29.41,          56.63,  +2.45,  +1.60
  2,     UK001Z,       0,  0.084005, 2459521.667895441409, 235.61983,  81.34138,                8.48938,  44.36408,         8.48352,       44.36463,    235.61983,     +81.34138,     235.63979,      +81.34440,  -721847.97,  3951519.35,  5070735.43,      51.798778,       -2.728054,  103973.96,  147357.56,    5124.39,             5169.88,    28.71,  66016.99,           64468.85,     -7.48,      7.88,          15.21,  +1.64,  +0.80
  3,     UK001Z,       0,  0.124925, 2459521.667895914987, 240.27652,  80.56235,                8.30226,  43.30402,         8.28582,       43.30557,    240.27652,     +80.56235,     240.33249,      +80.57027,  -721270.63,  3948886.05,  5070146.09,      51.814283,       -2.729577,  101844.85,  147077.32,    7883.90,             7929.39,   174.35,  67436.81,           64468.85,    -21.30,     22.46,          43.41,  +1.94,  +1.10
  4,     UK001Z,       0,  0.165661, 2459521.667896386236, 243.53434,  79.91123,                8.13779,  42.45891,         8.13156,       42.45950,    243.53434,     +79.91123,     243.55589,      +79.91408,  -720810.93,  3946789.32,  5069676.83,      51.826637,       -2.730825,  100149.89,  146890.63,   10081.13,            10126.63,  -230.53,  53938.36,           62718.49,     -8.17,      8.62,          16.67,  +2.25,  +1.42
  5,     UK001Z,       0,  0.206313, 2459521.667896857020, 246.06093,  79.30527,                8.00459,  41.70731,         7.99733,       41.70799,    246.06093,     +79.30527,     246.08578,      +79.30843,  -720403.57,  3944931.31,  5069261.00,      51.837589,       -2.731951,   98648.14,  146752.34,   12028.19,            12073.69,  -880.22,  47895.84,           60111.19,     -9.63,     10.15,          19.66,  +4.52,  +3.69
  0,     UK003Z,       1,  0.051897, 2459521.667895071208,   9.24307,  60.85236,              319.20794,  41.84310,       319.17496,       41.83233,      9.24307,     +60.85236,       9.25168,      +60.82585,  -722276.98,  3953476.06,  5071173.35,      51.787263,       -2.726916,  105556.32,  156602.17,       0.00,             3119.39,    29.16,      0.00,           63167.36,     -9.74,     72.67,          96.57,  +2.39,  +1.42
  1,     UK003Z,       1,  0.092329, 2459521.667895539198,   7.44649,  60.72510,              319.70376,  41.03889,       319.64206,       41.01878,      7.44649,     +60.72510,       7.46545,      +60.67522,  -721765.34,  3951142.44,  5070651.08,      51.800997,       -2.728282,  103669.18,  156233.84,    2445.48,             5564.86,  -108.06,  60483.72,           63167.36,    -18.42,    137.03,         182.54,  +2.05,  +1.08
  2,     UK003Z,       1,  0.132805, 2459521.667896007653,   5.58035,  60.54294,              320.18562,  40.18053,       320.12200,       40.15984,      5.58035,     +60.54294,       5.60313,      +60.49125,  -721228.81,  3948695.28,  5070103.40,      51.815407,       -2.729708,  101690.62,  155887.60,    5009.92,             8129.31,  -129.13,  63357.15,           63167.36,    -19.14,    142.45,         190.18,  +1.86,  +0.90
  3,     UK003Z,       1,  0.173313, 2459521.667896476574,   3.67000,  60.31065,              320.65525,  39.27922,       320.60880,       39.26415,      3.67000,     +60.31065,       3.68925,      +60.27276,  -720672.91,  3946159.83,  5069535.95,      51.830347,       -2.731181,   99641.09,  155572.44,    7666.90,            10786.29,   -59.70,  65591.52,           63167.36,    -14.06,    104.93,         140.36,  +2.99,  +2.03

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.