Orbital Analysis for matched events on 20211103_051557.414_UK

Back to daily index
Summary for Event
-----------------
shower ID 8 ORI
Lg 104.45° Bg -5.37° Vg 62.73km/s
mass 0.00788g, abs. mag 0.3
best visual mag 1.5
Path Details
------------
start -3.65° 50.27° 110.09km
end   -3.62° 50.31° 101.90km

Orbit Details
-------------
Semimajor axis 3.04A.U., eccentricity 0.86, inclination 167.26°, Period 5.30Y, LA Sun 220.71°, last Perihelion 2016-08-26

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: 2459521.719414521474
Time: 2021-11-03 05:15:57.414655 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK001K and UK003Z
 Convergence angle = 68.68722 deg
 R.A. = 105.75636  Dec = +17.30174 deg

Best intersection: Stations UK001K and UK003Z with Qconv = 68.69 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =  -1952849.36 +/- 96.29 m
 Y =   3668135.70 +/- 117.07 m
 Z =   4966475.71 +/- 35.27 m
 Vx =   -16200.27 +/- 4896.48 m/s
 Vy =    58535.99 +/- 20034.00 m/s
 Vz =    19201.13 +/- 6816.33 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.009207e+04, -1.076101e+04, -3.160535e+03, +4.030538e+05, -1.398699e+06, -4.507333e+05
-1.076101e+04, +1.465594e+04, +3.812408e+03, -4.409733e+05, +1.541326e+06, +4.898268e+05
-3.160535e+03, +3.812408e+03, +1.372918e+03, -1.657284e+05, +5.893973e+05, +1.927538e+05
+4.030538e+05, -4.409733e+05, -1.657284e+05, +3.293579e+07, -1.208188e+08, -3.975753e+07
-1.398699e+06, +1.541326e+06, +5.893973e+05, -1.208188e+08, +4.449769e+08, +1.465463e+08
-4.507333e+05, +4.898268e+05, +1.927538e+05, -3.975753e+07, +1.465463e+08, +4.833055e+07

Timing offsets (from input data):
    UK001K: 0.000000 s
    UK003Z: 0.002232 s

Reference point on the trajectory:
  Time: 2021-11-03 05:15:57.414655 UTC
  Lon     = +-3.648087 +/- 0.0005 deg
  Lat     = +50.265978 +/- 0.0007 deg
  Lat geo = +50.079901 +/- 0.0007 deg
  Ht      =  110117.68 +/- 89.31 m

  JD dynamic   = 2459521.720215262379 
  LST apparent = 118.0300329217 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 105.46982 +/- 0.3385 deg
  Dec       = +17.54376 +/- 0.2389 deg
  Azimuth   = 201.62583 +/- 0.6178 deg
  Elevation = +55.76274 +/- 0.2008 deg
  Vavg      =  62.22250 +/- 0.2900 km/s
  Vinit     =  63.69925 +/- 21.6627 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 105.74915 +/- 0.3385 deg
  Dec       = +17.56145 +/- 0.2389 deg
  Azimuth   = 201.17408 +/- 0.6178 deg
  Elevation = +55.84504 +/- 0.2008 deg
  Vavg      =  62.16036 +/- 0.2900 km/s
  Vinit     =  63.63710 +/- 21.6627 km/s
Radiant (geocentric, J2000):
  R.A.   = 105.08292 +/- 0.3405 deg
  Dec    = +17.31386 +/- 0.2398 deg
  Vg     =  62.72552 +/- 0.2752 km/s
  Vinf   =  63.69925 +/- 0.2710 km/s
  Zc     =  34.06434 +/- 0.2006 deg
  Zg     =  34.33472 +/- 0.2011 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 104.44918 +/- 0.3376 deg
  Bg     =  -5.37052 +/- 0.2234 deg
  Vh     =  38.68739 +/- 0.3371 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  83.49243 +/- 0.4605 deg
  Bh     =  -8.72827 +/- 0.3678 deg
  Vh_x   =  -4.33383 +/- 0.3309 km/s
  Vh_y   = -37.99297 +/- 0.3120 km/s
  Vh_z   =   5.87075 +/- 0.2544 km/s
Orbit:
  La Sun = 220.706073 +/- 0.0000 deg
  a      =   3.041153 +/- 0.3153 AU
  e      =   0.860996 +/- 0.0122
  i      = 167.264539 +/- 0.4691 deg
  peri   = 103.908429 +/- 1.0951 deg
  node   =  40.704233 +/- 0.0002 deg
  Pi     = 144.612662 +/- 1.0950 deg
  q      =   0.422732 +/- 0.0075 AU
  f      = 256.087579 +/- 1.0951 deg
  M      = 352.208127 +/- 1.0768 deg
  Q      =   5.659574 +/- 0.6293 AU
  n      =   0.185843 +/- 0.0243 deg/day
  T      =   5.303444 +/- 0.8585 years
  Last perihelion JD = 2457626.530718 (2016-08-26 00:44:14.063778) +/- 313.9531 days
  Tj     =   0.952813 +/- 0.1573
Shower association:
  IAU No.  =    8
  IAU code =  ORI

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +1.393428e-04, +3.168383e-06, -3.500454e+00, +1.777921e-07, -6.692671e-03, -7.622758e-04
q   , +3.168383e-06, +6.043278e-05, -5.757959e-01, +8.311084e-07, -7.859485e-03, -2.623755e-03
Tp  , -3.500454e+00, -5.757959e-01, +9.301056e+04, -9.357484e-03, +2.313034e+02, +3.494968e+01
node, +1.777921e-07, +8.311084e-07, -9.357484e-03, +2.177549e-08, -1.142345e-04, -6.768662e-05
peri, -6.692671e-03, -7.859485e-03, +2.313034e+02, -1.142345e-04, +1.305690e+00, +3.695763e-01
i   , -7.622758e-04, -2.623755e-03, +3.494968e+01, -6.768662e-05, +3.695763e-01, +2.109330e-01

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.001707
 a2 = 75.738375

Mean time residuals from time vs. length:
  Station with reference time: UK001K
  Avg. res. = 8.682e-06 s
  Stddev    = 2.95e-03 s

Begin point on the trajectory:
  Lon =    -3.647979 +/- 0.0004 deg
  Lat =    50.266154 +/- 0.0006 deg
  Ht  = 110086.22 +/- 79.49 m
End point on the trajectory:
  Lon =    -3.620263 +/- 0.0003 deg
  Lat =    50.312000 +/- 0.0005 deg
  Ht  = 101898.12 +/- 45.56 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,   0.023336,  59.510780,   110086.22,   101898.12,          0.025694,     76.86,      9.80,              20.66, 1.0000,    True,    True, {"ff_name": "FF_UK001K_20211103_051554_524_1063168.fits"}
    UK003Z,   False,    -1.639327,    51.011519,   64.00,   0.000000,   0.000000,   109626.28,   103343.29,          0.010084,     16.43,     30.49,              33.22, 1.0000,    True,    True, {"ff_name": "FF_UK003Z_20211103_051554_106_1083392.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, 2459521.719414521474, 115.95223,  -0.28884,              182.75994,  38.19471,       182.73818,       38.20508,    115.95223,      -0.28884,     115.96963,       -0.27898, -1952839.68,  3668100.73,  4966464.24,      50.266154,       -3.647979,  110086.22,  175560.71,       0.00,               38.05,    -0.27,      0.00,           64228.18,      7.68,    -60.82,          72.02,  +2.06,  +0.84
  1,     UK001K,       0,  0.040184, 2459521.719414986670, 116.06263,  -0.54935,              182.61012,  37.93753,       182.55673,       37.96288,    116.06263,      -0.54935,     116.10559,       -0.52519, -1952220.79,  3665864.49,  4965730.71,      50.277405,       -3.641185,  108074.56,  173285.38,    2433.50,             2471.55,  -126.46,  60558.83,           64228.18,     18.85,   -147.43,         176.92,  +1.56,  +0.37
  2,     UK001K,       0,  0.080368, 2459521.719415451866, 116.27727,  -0.84696,              182.32853,  37.64578,       182.32217,       37.64881,    116.27727,      -0.84696,     116.28271,       -0.84407, -1951442.64,  3663052.82,  4964808.42,      50.291560,       -3.632590,  105545.65,  170430.56,    5493.17,             5531.22,   373.52,  76141.64,           64228.18,      2.18,    -17.32,          21.13,  +1.94,  +0.78
  3,     UK001K,       0,  0.120524, 2459521.719415916596, 116.39083,  -1.07608,              182.17831,  37.41952,       182.16035,       37.42804,    116.39083,      -1.07608,     116.40579,       -1.06789, -1950911.55,  3661133.87,  4964178.96,      50.301227,       -3.626771,  103819.93,  168486.33,    7581.38,             7619.43,   -96.17,  52002.50,           64228.18,      6.13,    -48.46,          59.80,  +1.52,  +0.39
  4,     UK001K,       0,  0.160692, 2459521.719416381326, 116.53455,  -1.32985,              181.99051,  37.16906,       181.97623,       37.17583,    116.53455,      -1.32985,     116.54674,       -1.32333, -1950320.05,  3658996.61,  4963477.89,      50.312000,       -3.620263,  101898.12,  166324.92,    9907.16,             9945.21,  -329.06,  57901.32,           62138.18,      4.82,    -38.12,          47.65,  +3.13,  +2.03
  0,     UK003Z,       0,  0.007001, 2459521.719414578751,  72.11149,   9.23655,              240.58517,  32.74358,       240.57897,       32.73945,     72.11149,      +9.23655,      72.11359,       +9.23022, -1952698.19,  3667589.47,  4966296.54,      50.268725,       -3.646408,  109626.28,  198620.87,       0.00,              594.40,   110.12,      0.00,           63001.76,     20.30,     10.96,          23.96,  +2.38,  +0.89
  1,     UK003Z,       0,  0.047341, 2459521.719415045809,  71.73875,   9.09060,              240.85192,  32.41771,       240.86960,       32.42944,     71.73875,      +9.09060,      71.73298,       +9.10865, -1952076.52,  3665343.21,  4965559.71,      50.280028,       -3.639583,  107605.67,  196594.46,    2444.40,             3038.81,   -15.11,  60595.00,           63001.76,    -57.35,    -30.89,          68.34,  +1.67,  +0.20
  2,     UK003Z,       0,  0.087705, 2459521.719415512867,  71.31676,   8.97435,              241.18449,  32.08893,       241.18529,       32.08946,     71.31676,      +8.97435,      71.31685,       +8.97516, -1951410.39,  3662936.32,  4964770.20,      50.292147,       -3.632249,  105440.88,  194433.10,    5063.59,             5657.99,    32.92,  64889.18,           63001.76,     -2.57,     -1.38,           3.09,  +1.88,  +0.44
  3,     UK003Z,       0,  0.128065, 2459521.719415979926,  70.90474,   8.84137,              241.49464,  31.75119,       241.49572,       31.75190,     70.90474,      +8.84137,      70.90490,       +8.84248, -1950764.86,  3660603.82,  4964005.09,      50.303899,       -3.625139,  103343.29,  192349.59,    7601.84,             8196.24,     0.27,  62890.17,           63001.76,     -3.43,     -1.85,           4.18,  +2.67,  +1.25

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.