Orbital Analysis for matched events on 20211015_050729.440_UK

Back to daily index
Summary for Event
-----------------
shower ID 8 ORI
Lg 89.95° Bg -9.45° Vg 67.06km/s
mass 0.02720g, abs. mag -0.7
best visual mag 0.6
Path Details
------------
start -1.81° 52.88° 111.51km
end   -1.77° 53.00° 95.07km

Orbit Details
-------------
Semimajor axis 26.77A.U., eccentricity 0.98, inclination 160.77°, Period 138.52Y, LA Sun 201.77°, last Perihelion 1883-05-15

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: 2459502.713535188232
Time: 2021-10-15 05:07:29.440263 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002X and UK002Z
 Convergence angle = 35.16594 deg
 R.A. =  90.30291  Dec = +14.21667 deg

Best intersection: Stations UK002X and UK002Z with Qconv = 35.17 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   -614884.27 +/- 73.85 m
 Y =   3876051.81 +/- 171.64 m
 Z =   5151639.21 +/- 72.33 m
 Vx =     -340.02 +/- 382.25 m/s
 Vy =    65873.38 +/- 660.68 m/s
 Vz =    16744.88 +/- 308.26 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+3.158065e+03, +7.368582e+03, +3.324522e+03, +1.396761e+04, +1.309100e+04, +8.212277e+03
+7.368582e+03, +2.175672e+04, +9.246031e+03, +3.981068e+04, +2.338795e+04, +2.068153e+04
+3.324522e+03, +9.246031e+03, +4.252845e+03, +1.535856e+04, +1.349046e+04, +1.015508e+04
+1.396761e+04, +3.981068e+04, +1.535856e+04, +1.114129e+05, +4.886818e+04, +5.214464e+04
+1.309100e+04, +2.338795e+04, +1.349046e+04, +4.886818e+04, +1.751223e+05, +7.387483e+04
+8.212277e+03, +2.068153e+04, +1.015508e+04, +5.214464e+04, +7.387483e+04, +5.029636e+04

Timing offsets (from input data):
    UK002X: -0.003676 s
    UK002Z: 0.000000 s

Reference point on the trajectory:
  Time: 2021-10-15 05:07:29.440263 UTC
  Lon     = +-1.814513 +/- 0.0014 deg
  Lat     = +52.881998 +/- 0.0008 deg
  Lat geo = +52.699838 +/- 0.0008 deg
  Ht      =  111575.11 +/- 151.94 m

  JD dynamic   = 2459502.714335929137 
  LST apparent = 99.0141020736 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  90.29574 +/- 0.3348 deg
  Dec       = +14.26221 +/- 0.1298 deg
  Azimuth   = 193.42994 +/- 0.5233 deg
  Elevation = +50.76399 +/- 0.1058 deg
  Vavg      =  67.03882 +/- 0.1172 km/s
  Vinit     =  67.96917 +/- 0.6450 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  90.54194 +/- 0.3348 deg
  Dec       = +14.27110 +/- 0.1298 deg
  Azimuth   = 193.05840 +/- 0.5233 deg
  Elevation = +50.80683 +/- 0.1058 deg
  Vavg      =  66.99737 +/- 0.1172 km/s
  Vinit     =  67.92772 +/- 0.6450 km/s
Radiant (geocentric, J2000):
  R.A.   =  89.94513 +/- 0.3361 deg
  Dec    = +13.99094 +/- 0.1323 deg
  Vg     =  67.05755 +/- 0.6539 km/s
  Vinf   =  67.96917 +/- 0.6450 km/s
  Zc     =  39.05885 +/- 0.1056 deg
  Zg     =  39.33326 +/- 0.1075 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  89.94603 +/- 0.3312 deg
  Bg     =  -9.44674 +/- 0.1321 deg
  Vh     =  41.78653 +/- 0.6900 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  73.27006 +/- 0.3964 deg
  Bh     = -15.27001 +/- 0.2885 deg
  Vh_x   = -11.60405 +/- 0.3790 km/s
  Vh_y   = -38.60499 +/- 0.6559 km/s
  Vh_z   =  11.00524 +/- 0.1482 km/s
Orbit:
  La Sun = 201.773353 +/- 0.0000 deg
  a      =  26.771331 +/- 51.9983 AU
  e      =   0.976352 +/- 0.0409
  i      = 160.767642 +/- 0.3029 deg
  peri   =  74.877004 +/- 1.7610 deg
  node   =  21.775884 +/- 0.0000 deg
  Pi     =  96.652887 +/- 1.7610 deg
  q      =   0.633089 +/- 0.0084 AU
  f      = 285.123469 +/- 1.7610 deg
  M      = 359.730135 +/- nan deg
  Q      =  52.909573 +/- 103.9981 AU
  n      =   0.007115 +/- 0.0196 deg/day
  T      = 138.517800 +/- nan years
  Last perihelion JD = 2408946.133480 (1883-05-15 15:12:12.712099) +/- 150793.6100 days
  Tj     =  -0.731525 +/- 0.3524
Shower association:
  IAU No.  =    8
  IAU code =  ORI

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +7.355841e-04, +9.962492e-05, -2.700548e+03, +1.553780e-07, -2.991368e-02, +6.499855e-03
q   , +9.962492e-05, +6.382783e-05, -3.959548e+02, +1.207896e-08, -1.010952e-02, +5.004536e-04
Tp  , -2.700548e+03, -3.959548e+02, +3.014195e+10, -1.674544e-01, +1.107485e+05, -7.236563e+03
node, +1.553780e-07, +1.207896e-08, -1.674544e-01, +4.866369e-11, -5.268155e-06, +2.023181e-06
peri, -2.991368e-02, -1.010952e-02, +1.107485e+05, -5.268155e-06, +1.946371e+00, -2.198360e-01
i   , +6.499855e-03, +5.004536e-04, -7.236563e+03, +2.023181e-06, -2.198360e-01, +8.413058e-02

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 1.182177
 a2 = 18.020598

Mean time residuals from time vs. length:
  Station with reference time: UK002Z
  Avg. res. = 3.064e-06 s
  Stddev    = 1.75e-03 s

Begin point on the trajectory:
  Lon =    -1.814340 +/- 0.0014 deg
  Lat =    52.882438 +/- 0.0006 deg
  Ht  = 111512.45 +/- 125.31 m
End point on the trajectory:
  Lon =    -1.769870 +/- 0.0012 deg
  Lat =    52.998187 +/- 0.0004 deg
  Ht  = 95065.89 +/- 102.39 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
    UK002X,   False,    -3.059440,    54.994170,   18.00,   0.045939,  31.992960,   108558.46,    97922.78,          0.007525,     34.73,      0.18,              35.51, 1.0000,    True,    True, {"ff_name": "FF_UK002X_20211015_050721_566_0627456.fits"}
    UK002Z,   False,    -0.382830,    53.537790,   34.00,   0.695113,  19.554121,   111512.45,    95065.89,          0.013713,     29.25,     20.72,              27.10, 1.0000,    True,    True, {"ff_name": "FF_UK002Z_20211015_050721_103_1026816.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,     UK002X,       0,  0.064911, 2459502.713535962161, 116.50718, -10.69849,              160.03031,  22.44238,       160.02482,       22.44596,    116.50718,     -10.69849,     116.51180,      -10.69397,  -614864.78,  3872276.63,  5150679.57,      52.903172,       -1.806430,  108558.46,  271551.00,       0.00,             3895.30,  -282.24,      0.00,           69259.92,     -0.15,    -29.44,          22.36,  +2.61,  +0.44
  1,     UK002X,       0,  0.105239, 2459502.713536428753, 116.80489, -10.97855,              159.78149,  22.10934,       159.77442,       22.11395,    116.80489,     -10.97855,     116.81093,      -10.97272,  -614848.56,  3869133.39,  5149880.56,      52.920816,       -1.799624,  106047.48,  268931.60,    3243.24,             7138.53,   219.93,  80421.45,           69259.92,     -0.19,    -37.60,          28.84,  +1.62,  -0.53
  2,     UK002X,       0,  0.145495, 2459502.713536894880, 117.04640, -11.19951,              159.57961,  21.84487,       159.57519,       21.84775,    117.04640,     -11.19951,     117.05051,      -11.19586,  -614835.79,  3866658.51,  5149251.45,      52.934717,       -1.794293,  104070.85,  266878.04,    5796.86,             9692.16,    37.39,  63434.67,           69259.92,     -0.12,    -23.31,          18.02,  +1.22,  -0.91
  3,     UK002X,       0,  0.185767, 2459502.713537361007, 117.29939, -11.43469,              159.37021,  21.56381,       159.36576,       21.56670,    117.29939,     -11.43469,     117.30369,      -11.43101,  -614822.52,  3864088.68,  5148598.21,      52.949161,       -1.788743,  102018.80,  264755.01,    8448.45,            12343.75,   -48.28,  65841.98,           69259.92,     -0.12,    -23.32,          18.17,  +1.01,  -1.10
  4,     UK002X,       0,  0.226055, 2459502.713537827134, 117.56266, -11.68068,              159.15395,  21.26968,       159.14821,       21.27341,    117.56266,     -11.68068,     117.56816,      -11.67592,  -614808.91,  3861452.55,  5147928.11,      52.963986,       -1.783039,   99914.25,  262587.26,   11168.45,            15063.75,   -66.62,  67513.91,           68374.67,     -0.15,    -29.88,          23.47,  +0.95,  -1.15
  5,     UK002X,       0,  0.266319, 2459502.713538293261, 117.83008, -11.90249,              158.92938,  20.99794,       158.93993,       20.99109,    117.83008,     -11.90249,     117.82283,      -11.91126,  -614796.04,  3858957.55,  5147293.88,      52.978026,       -1.777641,   97922.78,  260544.87,   13742.83,            17638.13,  -228.95,  63937.57,           67488.16,      0.30,     54.56,          43.19,  +2.98,  +0.90
  0,     UK002Z,       0,  0.000000, 2459502.713535188232,  62.21699,  15.93063,              233.24643,  42.04080,       233.24493,       42.03887,     62.21699,     +15.93063,      62.21700,      +15.92840,  -614883.87,  3875973.41,  5151619.28,      52.882438,       -1.814340,  111512.45,  164761.24,       0.00,               80.90,   315.29,      0.00,           64662.24,      3.71,      5.24,           8.04,  +2.14,  +1.06
  1,     UK002Z,       0,  0.040312, 2459502.713535654824,  61.76276,  15.93268,              233.75734,  41.82558,       233.75223,       41.81907,     61.76276,     +15.93268,      61.76299,      +15.92513,  -614870.39,  3873363.39,  5150955.82,      52.897075,       -1.808728,  109426.77,  162376.08,    2693.06,             2773.95,   268.37,  66805.33,           64662.24,     12.35,     17.44,          27.15,  +1.46,  +0.41
  2,     UK002Z,       0,  0.080608, 2459502.713536121417,  61.33633,  15.92687,              234.22925,  41.61554,       234.22535,       41.61062,     61.33633,     +15.92687,      61.33672,      +15.92115,  -614858.10,  3870982.10,  5150350.50,      52.910437,       -1.803616,  107524.24,  160208.98,    5150.12,             5231.01,   -13.45,  60975.29,           64662.24,      9.24,     13.05,          20.59,  +1.02,  -0.00
  3,     UK002Z,       0,  0.120952, 2459502.713536588009,  60.85114,  15.90447,              234.75253,  41.36146,       234.76021,       41.37106,     60.85114,     +15.90447,      60.85151,      +15.91567,  -614844.49,  3868345.57,  5149680.30,      52.925240,       -1.797931,  105418.22,  157818.71,    7870.52,             7951.42,   -35.20,  67430.20,           64662.24,    -17.86,    -25.17,          40.33,  +0.84,  -0.15
  4,     UK002Z,       0,  0.161320, 2459502.713537055533,  60.31478,  15.90375,              235.34345,  41.09958,       235.34666,       41.10355,     60.31478,     +15.90375,      60.31538,      +15.90840,  -614829.91,  3865520.84,  5148962.26,      52.941110,       -1.791820,  103162.36,  155269.31,   10785.12,            10866.02,   135.62,  72200.77,           66326.04,     -7.28,    -10.27,          16.72,  +0.69,  -0.27
  5,     UK002Z,       0,  0.201672, 2459502.713537522592,  59.81739,  15.88626,              235.87665,  40.84061,       235.88648,       40.85264,     59.81739,     +15.88626,      59.81799,      +15.90040,  -614816.81,  3862981.85,  5148316.85,      52.955384,       -1.786337,  101135.12,  152989.56,   13404.89,            13485.79,    12.70,  64922.91,           66600.40,    -21.85,    -30.78,          50.89,  +0.61,  -0.31
  6,     UK002Z,       0,  0.242004, 2459502.713537989184,  59.32177,  15.89847,              236.42476,  40.60646,       236.41973,       40.60037,     59.32177,     +15.89847,      59.32292,      +15.89129,  -614804.14,  3860527.85,  5147693.05,      52.969189,       -1.781035,   99176.12,  150796.77,   15936.97,            16017.86,  -196.56,  62780.84,           66289.12,     10.93,     15.42,          25.86,  +0.86,  -0.03
  7,     UK002Z,       0,  0.282384, 2459502.713538456708,  58.76380,  15.90268,              237.03157,  40.33283,       237.01543,       40.31346,     58.76380,     +15.90268,      58.76548,      +15.87974,  -614790.30,  3857845.64,  5147011.24,      52.984286,       -1.775218,   97035.40,  148411.70,   18704.51,            18785.41,  -173.61,  68537.52,           66347.01,     34.34,     48.51,          82.60,  +1.54,  +0.68
  8,     UK002Z,       0,  0.322752, 2459502.713538923766,  58.23431,  15.89333,              237.59463,  40.06001,       237.57629,       40.03820,     58.23431,     +15.89333,      58.23629,      +15.86740,  -614777.56,  3855377.45,  5146383.83,      52.998187,       -1.769870,   95065.89,  146229.34,   21251.23,            21332.13,  -370.67,  63087.52,           66156.55,     38.25,     54.04,          93.39,  +3.26,  +2.43

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.