Orbital Analysis for matched events on 20210904_211745.355_UK

Summary for Event
-----------------
shower ID -1 spo
Lg 62.23° Bg 27.04° Vg 58.26km/s
mass 0.01461g, abs. mag 0.5
Path Details
------------
start -2.94° 50.40° 106.97km
end   -3.08° 50.30° 100.12km

Orbit Details
-------------
Semimajor axis 1.76A.U., eccentricity 0.49, inclination 129.13°, Period 2.33Y, LA Sun 162.26°, last Perihelion 2019-06-12

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: 2459462.387330504600
Time: 2021-09-04 21:17:45.365253 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000H and UK000T
 Convergence angle = 52.81610 deg
 R.A. =  51.82048  Dec = +47.37808 deg

Best intersection: Stations UK000H and UK000T with Qconv = 52.82 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   2115260.51 +/- 34.01 m
 Y =  -3560900.24 +/- 28.00 m
 Z =   4973827.22 +/- 19.90 m
 Vx =    24479.18 +/- 230.29 m/s
 Vy =    31699.69 +/- 239.38 m/s
 Vz =    43735.01 +/- 134.68 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.203026e+03, -7.307514e+02, +1.181902e+02, +6.773086e+03, -6.111354e+03, -7.237363e+02
-7.307514e+02, +8.500626e+02, -1.195492e+02, -3.628574e+03, +6.358955e+03, -1.136294e+03
+1.181902e+02, -1.195492e+02, +4.371743e+02, +2.700414e+02, -1.992392e+03, +8.307674e+02
+6.773086e+03, -3.628574e+03, +2.700414e+02, +4.254431e+04, -3.522870e+04, -6.435256e+03
-6.111354e+03, +6.358955e+03, -1.992392e+03, -3.522870e+04, +6.223289e+04, -1.055966e+04
-7.237363e+02, -1.136294e+03, +8.307674e+02, -6.435256e+03, -1.055966e+04, +8.645699e+03

Timing offsets (from input data):
    UK000H: 0.000000 s
    UK000T: -0.000007 s

Reference point on the trajectory:
  Time: 2021-09-04 21:17:45.365253 UTC
  Lon     = +-2.936572 +/- 0.0003 deg
  Lat     = +50.401356 +/- 0.0003 deg
  Lat geo = +50.215350 +/- 0.0003 deg
  Ht      =  106969.44 +/- 31.44 m

  JD dynamic   = 2459462.388131357264 
  LST apparent = 300.7113318480 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  52.32392 +/- 0.4066 deg
  Dec       = +47.51747 +/- 0.1515 deg
  Azimuth   =  43.49575 +/- 0.2242 deg
  Elevation = +24.18555 +/- 0.2367 deg
  Vavg      =  57.94259 +/- 0.0507 km/s
  Vinit     =  59.30305 +/- 0.0397 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  52.16589 +/- 0.4066 deg
  Dec       = +47.31793 +/- 0.1515 deg
  Azimuth   =  43.72691 +/- 0.2242 deg
  Elevation = +24.10335 +/- 0.2367 deg
  Vavg      =  58.13269 +/- 0.0507 km/s
  Vinit     =  59.49315 +/- 0.0397 km/s
Radiant (geocentric, J2000):
  R.A.   =  52.57627 +/- 0.4046 deg
  Dec    = +46.94004 +/- 0.1532 deg
  Vg     =  58.25537 +/- 0.0405 km/s
  Vinf   =  59.30305 +/- 0.0397 km/s
  Zc     =  65.94945 +/- 0.2369 deg
  Zg     =  66.61200 +/- 0.2391 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  62.23415 +/- 0.2880 deg
  Bg     = +27.04472 +/- 0.1834 deg
  Vh     =  35.43075 +/- 0.0618 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  48.56911 +/- 0.6631 deg
  Bh     = +48.38672 +/- 0.2637 deg
  Vh_x   = -15.56988 +/- 0.1994 km/s
  Vh_y   = -17.64138 +/- 0.2042 km/s
  Vh_z   = -26.48959 +/- 0.1487 km/s
Orbit:
  La Sun = 162.257566 +/- nan deg
  a      =   1.759523 +/- 0.0159 AU
  e      =   0.490385 +/- 0.0063
  i      = 129.125946 +/- 0.3447 deg
  peri   = 228.439829 +/- 0.8761 deg
  node   = 162.255097 +/- 0.0000 deg
  Pi     =  30.694925 +/- 0.8761 deg
  q      =   0.896679 +/- 0.0047 AU
  f      = 311.556612 +/- 0.8761 deg
  M      = 344.348754 +/- 0.2266 deg
  Q      =   2.622367 +/- 0.0348 AU
  n      =   0.422291 +/- 0.0055 deg/day
  T      =   2.333958 +/- 0.0319 years
  Last perihelion JD = 2458646.957673 (2019-06-12 10:59:02.963067) +/- 11.4918 days
  Tj     =   2.318234 +/- 0.0213
Shower association:
  IAU No.  =   -1
  IAU code =  ...

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +4.318299e-05, -2.580742e-05, -7.412019e-02, +2.884521e-09, +7.502635e-05, -3.674463e-05
q   , -2.580742e-05, +2.262231e-05, +3.297151e-02, -1.103471e-09, -7.327947e-05, +1.409516e-05
Tp  , -7.412019e-02, +3.297151e-02, +1.450724e+02, -5.924885e-06, -8.401984e-02, +7.541972e-02
node, +2.884521e-09, -1.103471e-09, -5.924885e-06, +2.483699e-13, +2.561761e-09, -3.160137e-09
peri, +7.502635e-05, -7.327947e-05, -8.401984e-02, +2.561761e-09, +2.427545e-04, -3.278483e-05
i   , -3.674463e-05, +1.409516e-05, +7.541972e-02, -3.160137e-09, -3.278483e-05, +4.020932e-05

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: UK000H
  Avg. res. = 2.157e-06 s
  Stddev    = 1.47e-03 s

Begin point on the trajectory:
  Lon =    -2.936553 +/- 0.0002 deg
  Lat =    50.401368 +/- 0.0003 deg
  Ht  = 106970.33 +/- 28.08 m
End point on the trajectory:
  Lon =    -3.083153 +/- 0.0003 deg
  Lat =    50.303130 +/- 0.0003 deg
  Ht  = 100122.38 +/- 36.74 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
    UK000H,   False,    -1.778230,    50.857470,   24.00,   0.000000,   0.000000,   106944.94,   100266.70,          0.015895,     12.39,     38.92,             106.10, 1.0000,    True,    True, {"ff_name": "FF_UK000H_20210904_211737_786_0175872.fits"}
    UK000T,   False,    -3.557111,    51.483925,   37.50,   2.254301,  13.341484,   106970.33,   100122.38,          0.011424,     30.86,     13.27,              92.26, 1.0000,    True,    True, {"ff_name": "FF_UK000T_20210904_211739_509_0165120.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,     UK000H,       0,  0.000000, 2459462.387330652680, 263.71275,  20.30894,              238.65969,  47.28180,       238.67937,       47.27858,    263.71275,     +20.30894,     263.69912,      +20.31398,  2115235.82, -3560932.21,  4973783.12,      50.401006,       -2.937105,  106944.94,  144533.65,       0.00,               59.80,   468.15,      0.00,           55227.63,     33.01,    -10.52,          49.44,  +3.27,  +2.47
  1,     UK000H,       0,  0.040660, 2459462.387331123464, 263.38843,  19.60976,              238.43904,  46.53410,       238.42371,       46.53661,    263.38843,     +19.60976,     263.39931,      +19.60580,  2114407.07, -3562005.41,  4972302.45,      50.389256,       -2.954712,  106122.61,  145125.06,    2007.73,             2067.53,    64.62,  49378.51,           55227.63,    -26.16,      8.32,          39.01,  +2.37,  +1.56
  2,     UK000H,       0,  0.081448, 2459462.387331595179, 263.07765,  18.75771,              238.08879,  45.66625,       238.12972,       45.65956,    263.07765,     +18.75771,     263.04909,      +18.76839,  2113418.60, -3563285.45,  4970536.42,      50.375234,       -2.975674,  105142.47,  145862.37,    4402.40,             4462.20,    40.44,  58710.22,           55227.63,     71.26,    -22.72,         105.76,  +2.15,  +1.33
  3,     UK000H,       0,  0.122192, 2459462.387332066894, 262.73002,  17.96798,              237.84334,  44.82800,       237.85895,       44.82545,    262.73002,     +17.96798,     262.71939,      +17.97209,  2112469.84, -3564514.07,  4968841.35,      50.361769,       -2.995795,  104202.39,  146603.87,    6700.86,             6760.66,   -77.34,  56412.19,           55227.63,     27.70,     -8.82,          40.91,  +1.80,  +0.97
  4,     UK000H,       0,  0.163020, 2459462.387332539540, 262.35838,  17.08200,              237.56071,  43.89541,       237.56555,       43.89462,    262.35838,     +17.08200,     262.35557,      +17.08329,  2111399.78, -3565899.75,  4966929.57,      50.346573,       -3.018460,  103142.92,  147478.04,    9293.16,             9352.96,    93.73,  63493.09,           57118.95,      8.77,     -2.79,          12.88,  +1.92,  +1.08
  5,     UK000H,       0,  0.203752, 2459462.387333010789, 262.02919,  16.29801,              237.32191,  43.06834,       237.31373,       43.06968,    262.02919,     +16.29801,     262.03600,      +16.29582,  2110441.54, -3567140.64,  4965217.55,      50.332956,       -3.038768,  102194.87,  148295.92,   11614.59,            11674.39,    -0.37,  56992.89,           57640.51,    -15.10,      4.80,          22.04,  +1.45,  +0.59
  6,     UK000H,       0,  0.244404, 2459462.387333481573, 261.75201,  15.59213,              237.09424,  42.33261,       237.09494,       42.33250,    261.75201,     +15.59213,     261.75251,      +15.59232,  2109576.87, -3568260.35,  4963672.72,      50.320663,       -3.057105,  101339.97,  149062.02,   13709.33,            13769.13,  -316.42,  51528.55,           57173.70,      1.32,     -0.42,           1.91,  +3.53,  +2.66
  7,     UK000H,       0,  0.285212, 2459462.387333953753, 261.37787,  14.72775,              236.86320,  41.41176,       236.82942,       41.41729,    261.37787,     +14.72775,     261.40413,      +14.71854,  2108490.53, -3569667.14,  4961731.83,      50.305210,       -3.080093,  100266.70,  150058.84,   16341.10,            16400.90,  -104.68,  64491.62,           57589.73,    -64.73,     20.57,          93.36,  +2.87,  +1.99
  0,     UK000T,       0,  0.004821, 2459462.387330616359, 315.60630,   2.23743,              159.86489,  39.05970,       159.85107,       39.04461,    315.60630,      +2.23743,     315.62002,       +2.22500,  2115261.41, -3560899.07,  4973828.84,      50.401368,       -2.936553,  106970.33,  167675.11,       0.00,                2.19,   124.67,      0.00,           58413.39,    -21.41,     49.77,          66.65,  +2.41,  +1.29
  1,     UK000T,       0,  0.045665, 2459462.387331089005, 315.08415,   1.64755,              160.67902,  38.59277,       160.67444,       38.58784,    315.08415,      +1.64755,     315.08883,       +1.64346,  2114311.46, -3562129.22,  4972131.64,      50.387900,       -2.956711,  106027.78,  167803.20,    2301.34,             2299.15,    -0.54,  56344.62,           58413.39,     -7.05,     16.40,          21.95,  +1.80,  +0.68
  2,     UK000T,       0,  0.086529, 2459462.387331562117, 314.54414,   1.04484,              161.50839,  38.11143,       161.50943,       38.11253,    314.54414,      +1.04484,     314.54345,       +1.04577,  2113333.65, -3563395.46,  4970384.66,      50.374029,       -2.977448,  105058.27,  167968.15,    4670.18,             4667.99,   -55.06,  57968.85,           58413.39,      1.59,     -3.70,           4.94,  +1.59,  +0.46
  3,     UK000T,       0,  0.127421, 2459462.387332035229, 313.96857,   0.41797,              162.37690,  37.60744,       162.37575,       37.60623,    313.96857,      +0.41797,     313.97020,       +0.41695,  2112302.80, -3564730.37,  4968542.93,      50.359397,       -2.999295,  104036.95,  168178.39,    7167.50,             7165.31,    17.24,  61071.13,           58413.39,     -1.76,      4.09,           5.46,  +1.60,  +0.47
  4,     UK000T,       0,  0.168289, 2459462.387332508340, 313.42070,  -0.18996,              163.19533,  37.11088,       163.19786,       37.11351,    313.42070,      -0.18996,     313.41892,       -0.18774,  2111308.91, -3566017.43,  4966767.21,      50.345281,       -3.020359,  103052.98,  168416.01,    9575.30,             9573.12,     1.45,  58916.63,           58765.12,      3.84,     -8.94,          11.91,  +1.43,  +0.30
  5,     UK000T,       0,  0.209141, 2459462.387332980987, 312.87843,  -0.79160,              163.99477,  36.61399,       164.00097,       36.62037,    312.87843,      -0.79160,     312.87328,       -0.78617,  2110322.32, -3567295.02,  4965004.56,      50.331262,       -3.041263,  102076.97,  168685.72,   11965.40,            11963.21,   -31.11,  58506.11,           58828.61,      9.41,    -21.89,          29.13,  +1.33,  +0.19
  6,     UK000T,       0,  0.249977, 2459462.387333453633, 312.35997,  -1.38341,              164.75269,  36.11754,       164.77120,       36.13639,    312.35997,      -1.38341,     312.34314,       -1.36725,  2109361.00, -3568539.89,  4963287.05,      50.317593,       -3.061630,  101126.64,  168980.77,   14294.28,            14292.09,  -123.93,  57030.07,           58658.74,     28.02,    -65.21,          86.63,  +1.59,  +0.45
  7,     UK000T,       0,  0.290825, 2459462.387333926279, 311.78493,  -1.98071,              165.57051,  35.61959,       165.57211,       35.62121,    311.78493,      -1.98071,     311.78457,       -1.97931,  2108344.38, -3569856.39,  4961470.72,      50.303130,       -3.083153,  100122.38,  169327.44,   16757.15,            16754.96,   -83.47,  60293.55,           58724.12,      2.43,     -5.65,           7.49,  +1.78,  +0.64

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.