Orbital Analysis for matched events on 20211015_045041.375_UK

Back to daily index
Summary for Event
-----------------
shower ID -1 spo
Lg 87.53° Bg -18.27° Vg 64.73km/s
mass 0.00380g, abs. mag 1.3
best visual mag 1.9
Path Details
------------
start -1.26° 54.29° 107.27km
end   -1.23° 54.40° 96.78km

Orbit Details
-------------
Semimajor axis 45.95A.U., eccentricity 0.99, inclination 142.23°, Period 311.52Y, LA Sun 201.76°, last Perihelion 1710-05-13

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: 2459502.701867767144
Time: 2021-10-15 04:50:41.415757 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002X and UK004B
 Convergence angle = 80.09381 deg
 R.A. =  88.16678  Dec =  +5.55386 deg

Best intersection: Stations UK002X and UK004B with Qconv = 80.09 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   -353939.88 +/- 22.95 m
 Y =   3778653.99 +/- 7.97 m
 Z =   5243301.85 +/- 41.11 m
 Vx =     2313.73 +/- 116.51 m/s
 Vy =    65329.37 +/- 65.37 m/s
 Vz =     6324.05 +/- 205.28 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+5.570586e+02, +7.456159e+01, +9.603775e+02, +2.589203e+03, -1.442674e+03, +4.379425e+03
+7.456159e+01, +6.789047e+01, +1.483129e+02, +3.521172e+02, -1.900908e+02, +7.593152e+02
+9.603775e+02, +1.483129e+02, +1.785986e+03, +4.471068e+03, -2.460905e+03, +8.081671e+03
+2.589203e+03, +3.521172e+02, +4.471068e+03, +1.365311e+04, -7.665963e+03, +2.268343e+04
-1.442674e+03, -1.900908e+02, -2.460905e+03, -7.665963e+03, +4.317319e+03, -1.255199e+04
+4.379425e+03, +7.593152e+02, +8.081671e+03, +2.268343e+04, -1.255199e+04, +4.132276e+04

Timing offsets (from input data):
    UK002X: 0.000140 s
    UK004B: 0.000000 s

Reference point on the trajectory:
  Time: 2021-10-15 04:50:41.415757 UTC
  Lon     = +-1.265832 +/- 0.0003 deg
  Lat     = +54.281861 +/- 0.0002 deg
  Lat geo = +54.102318 +/- 0.0002 deg
  Ht      =  108560.39 +/- 34.42 m

  JD dynamic   = 2459502.702668978833 
  LST apparent = 95.3511814322 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  87.97164 +/- 0.1016 deg
  Dec       =  +5.52570 +/- 0.1765 deg
  Azimuth   = 189.73454 +/- 0.1560 deg
  Elevation = +40.87811 +/- 0.1656 deg
  Vavg      =  63.79008 +/- 0.0195 km/s
  Vinit     =  65.67551 +/- 0.0410 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  88.21232 +/- 0.1016 deg
  Dec       =  +5.52864 +/- 0.1765 deg
  Azimuth   = 189.41953 +/- 0.1560 deg
  Elevation = +40.90441 +/- 0.1656 deg
  Vavg      =  63.75527 +/- 0.0195 km/s
  Vinit     =  65.64071 +/- 0.0410 km/s
Radiant (geocentric, J2000):
  R.A.   =  87.64368 +/- 0.1025 deg
  Dec    =  +5.14519 +/- 0.1774 deg
  Vg     =  64.73108 +/- 0.0416 km/s
  Vinf   =  65.67551 +/- 0.0410 km/s
  Zc     =  48.94494 +/- 0.1655 deg
  Zg     =  49.32267 +/- 0.1666 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  87.52849 +/- 0.1040 deg
  Bg     = -18.27229 +/- 0.1792 deg
  Vh     =  41.95162 +/- 0.0425 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  67.26986 +/- 0.1522 deg
  Bh     = -28.93107 +/- 0.2860 deg
  Vh_x   = -14.18680 +/- 0.1125 km/s
  Vh_y   = -33.86459 +/- 0.0309 km/s
  Vh_z   =  20.29439 +/- 0.2036 km/s
Orbit:
  La Sun = 201.761792 +/- -0.0000 deg
  a      =  45.953831 +/- 5.4488 AU
  e      =   0.986520 +/- 0.0023
  i      = 142.228661 +/- 0.2627 deg
  peri   =  76.278023 +/- 0.5948 deg
  node   =  21.764084 +/- 0.0000 deg
  Pi     =  98.042107 +/- 0.5948 deg
  q      =   0.619455 +/- 0.0045 AU
  f      = 283.722309 +/- 0.5948 deg
  M      = 359.879936 +/- 0.0387 deg
  Q      =  91.288208 +/- 10.8932 AU
  n      =   0.003164 +/- 0.0010 deg/day
  T      = 311.518058 +/- 50.5902 years
  Last perihelion JD = 2345756.698235 (1710-05-13 04:45:27.504323) +/- 18478.5228 days
  Tj     =  -0.655495 +/- 0.0216
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (deg) ,   peri (deg) ,    i (deg)
e   , +5.760762e-06, +1.122422e-05, -4.454124e+01, -6.006008e-09, -1.469552e-03, -6.197280e-04
q   , +1.122422e-05, +2.189513e-05, -8.639232e+01, -1.173760e-08, -2.866358e-03, -1.210844e-03
Tp  , -4.454124e+01, -8.639232e+01, +3.656996e+08, +4.634996e-02, +1.131524e+04, +4.796518e+03
node, -6.006008e-09, -1.173760e-08, +4.634996e-02, +6.857962e-12, +1.536357e-06, +7.078823e-07
peri, -1.469552e-03, -2.866358e-03, +1.131524e+04, +1.536357e-06, +3.752471e-01, +1.584928e-01
i   , -6.197280e-04, -1.210844e-03, +4.796518e+03, +7.078823e-07, +1.584928e-01, +7.307813e-02

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.000000
 a2 = 115.692453

Mean time residuals from time vs. length:
  Station with reference time: UK004B
  Avg. res. = 3.817e-06 s
  Stddev    = 1.95e-03 s

Begin point on the trajectory:
  Lon =    -1.262038 +/- 0.0003 deg
  Lat =    54.294799 +/- 0.0002 deg
  Ht  = 107274.55 +/- 27.52 m
End point on the trajectory:
  Lon =    -1.231955 +/- 0.0002 deg
  Lat =    54.400663 +/- 0.0002 deg
  Ht  = 96784.15 +/- 13.27 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,   0.000000,   0.000000,   105066.07,    96784.15,          0.010015,     13.78,     26.20,              48.64, 1.0000,    True,    True, {"ff_name": "FF_UK002X_20211015_045035_429_0602368.fits"}
    UK004B,   False,    -0.382770,    53.537630,   36.00,   0.000000,   0.000000,   107274.55,    96936.24,          0.004034,      9.95,      3.12,              83.14, 1.0000,    True,    True, {"ff_name": "FF_UK004B_20211015_045040_399_1001728.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,  0.093052, 2459502.701868842356, 138.17865,  13.79892,              122.18681,  36.29147,       122.18549,       36.29368,    138.17865,     +13.79892,     138.17885,      +13.80137,  -354128.04,  3773340.96,  5242787.54,      54.317040,       -1.255727,  105066.07,  174877.10,       0.00,             5341.18,     0.06,      0.00,           66200.27,     -6.63,     -3.49,           8.84,  +5.35,  +4.14
  1,     UK002X,       0,  0.133208, 2459502.701869307086, 138.85288,  13.85857,              121.44848,  36.01441,       121.45242,       36.00789,    138.85288,     +13.85857,     138.85398,      +13.85134,  -354219.68,  3770753.62,  5242537.08,      54.334184,       -1.250857,  103365.30,  173212.27,    2601.05,             7942.23,   -36.16,  64773.57,           66200.27,     19.41,     10.20,          26.11,  +3.53,  +2.34
  2,     UK002X,       0,  0.173400, 2459502.701869772281, 139.57854,  13.89526,              120.67597,  35.68946,       120.67178,       35.69627,    139.57854,     +13.89526,     139.57872,      +13.90286,  -354316.08,  3768031.75,  5242273.59,      54.352230,       -1.245718,  101576.72,  171486.36,    5337.34,            10678.52,    60.50,  68080.48,           66200.27,    -20.16,    -10.60,          27.40,  +3.61,  +2.44
  3,     UK002X,       0,  0.213580, 2459502.701870237477, 140.28582,  13.93470,              119.92573,  35.37307,       119.91661,       35.38768,    140.28582,     +13.93470,     140.28557,      +13.95106,  -354408.25,  3765429.09,  5242021.65,      54.369494,       -1.240805,   99867.08,  169860.50,    7953.79,            13294.97,    38.10,  65118.15,           66200.27,    -43.02,    -22.64,          59.04,  +2.31,  +1.16
  4,     UK002X,       0,  0.253752, 2459502.701870702673, 141.04461,  14.00248,              119.11017,  35.05240,       119.11126,       35.05070,    141.04461,     +14.00248,     141.04579,      +14.00056,  -354505.42,  3762685.69,  5241756.08,      54.387701,       -1.235609,   98065.64,  168174.15,   10711.72,            16052.90,   157.72,  68653.11,           66645.23,      4.99,      2.62,           6.92,  +2.56,  +1.43
  5,     UK002X,       0,  0.293900, 2459502.701871166937, 141.59520,  14.02055,              118.54144,  34.79114,       118.53317,       34.80405,    141.59520,     +14.02055,     141.59550,      +14.03510,  -354574.55,  3760733.56,  5241567.11,      54.400663,       -1.231955,   96784.15,  166989.29,   12674.19,            18015.37,  -516.55,  48880.96,           64236.55,    -37.61,    -19.79,          52.49,  +4.92,  +3.81
  0,     UK004B,       1,  0.000000, 2459502.701867767144,   2.30000,  66.86421,              325.39829,  46.34805,       325.34604,       46.32496,      2.30000,     +66.86421,       2.29658,      +66.82140,  -353939.65,  3778660.51,  5243302.48,      54.281818,       -1.265675,  108564.68,  148929.82,       0.00,                6.55,   776.70,      0.00,           61109.91,    -33.47,    106.17,         154.18,  +5.91,  +5.05
  1,     UK004B,       0,  0.040656, 2459502.701868237928,   0.38075,  66.82739,              325.92085,  45.68537,       325.92335,       45.68647,      0.38075,     +66.82739,       0.38092,      +66.82946,  -354009.10,  3776699.33,  5243112.64,      54.294799,       -1.262038,  107274.55,  148714.34,    1971.57,             1965.01,    65.06,  48493.90,           61109.91,      1.61,     -5.13,           7.45,  +3.75,  +2.89
  2,     UK004B,       0,  0.081636, 2459502.701868711971, 357.52291,  66.79687,              326.75926,  44.72723,       326.76338,       44.72903,    357.52291,     +66.79687,     357.52286,      +66.80030,  -354112.43,  3773781.70,  5242830.20,      54.314120,       -1.256538,  105355.86,  148439.46,    4904.65,             4898.10,   306.76,  71573.53,           61109.91,      2.67,     -8.50,          12.38,  +2.17,  +1.31
  3,     UK004B,       0,  0.122452, 2459502.701869184617, 355.15146,  66.74014,              327.44574,  43.92912,       327.44093,       43.92703,    355.15146,     +66.74014,     355.15282,      +66.73611,  -354198.20,  3771359.96,  5242595.77,      54.330166,       -1.251994,  103763.82,  148255.67,    7339.23,             7332.68,    60.72,  59647.69,           61109.91,     -3.14,      9.99,          14.56,  +2.47,  +1.61
  4,     UK004B,       0,  0.163324, 2459502.701869657263, 352.63691,  66.62656,              328.14303,  43.06453,       328.14552,       43.06561,    352.63691,     +66.62656,     352.63693,      +66.62866,  -354289.67,  3768777.32,  5242345.77,      54.347286,       -1.247131,  102066.58,  148103.16,    9935.55,             9929.00,   -27.25,  63523.16,           61795.83,      1.64,     -5.23,           7.63,  +1.86,  +1.01
  5,     UK004B,       0,  0.204216, 2459502.701870130841, 350.09099,  66.47854,              328.84645,  42.18128,       328.84553,       42.18088,    350.09099,     +66.47854,     350.09217,      +66.47776,  -354382.99,  3766142.40,  5242090.70,      54.364761,       -1.242160,  100335.58,  147994.20,   12584.44,            12577.88,   -63.96,  64777.62,           62418.17,     -0.61,      1.95,           2.86,  +3.24,  +2.39
  6,     UK004B,       0,  0.245148, 2459502.701870604418, 347.47694,  66.28526,              329.56233,  41.26014,       329.55334,       41.25628,    347.47694,     +66.28526,     347.48193,      +66.27764,  -354479.95,  3763404.77,  5241825.69,      54.382928,       -1.236980,   98537.75,  147930.93,   15336.57,            15330.02,    -0.06,  67236.79,           63157.66,     -6.03,     19.18,          28.04,  +2.07,  +1.22
  7,     UK004B,       0,  0.285976, 2459502.701871077064, 345.18982,  66.06631,              330.17166,  40.43017,       330.16713,       40.42823,    345.18982,     +66.06631,     345.19336,      +66.06246,  -354566.35,  3760965.26,  5241589.54,      54.399124,       -1.232376,   96936.24,  147918.06,   17789.01,            17782.45,  -229.02,  60067.49,           63208.18,     -3.06,      9.75,          14.26,  +2.24,  +1.39

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.