Orbital Analysis for matched events on 20210810_221532.337_UK

Summary for Event
-----------------
shower ID 12 KCG
Lg 295.14° Bg 70.64° Vg 21.25km/s
mass 0.03438g, abs. mag 1.3
Path Details
------------
start -0.02° 50.69° 94.85km
end   -0.00° 50.70° 85.04km

Orbit Details
-------------
Semimajor axis 3.30A.U., eccentricity 0.70, inclination 31.95°, Period 6.00Y, LA Sun 138.20°, last Perihelion 2015-08-30

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: 2459437.427457611542
Time: 2021-08-10 22:15:32.337637 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002B and UK002N
 Convergence angle = 39.74125 deg
 R.A. = 285.52499  Dec = +47.56146 deg

Best intersection: Stations UK002B and UK002N with Qconv = 39.74 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   1636666.92 +/- 101.12 m
 Y =  -3768450.87 +/- 86.42 m
 Z =   4985575.72 +/- 43.53 m
 Vx =     3568.48 +/- 405.63 m/s
 Vy =   -15500.59 +/- 15.96 m/s
 Vz =    17946.88 +/- 304.51 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+1.088607e+04, -8.911472e+03, +3.632326e+03, +4.176667e+04, -1.567219e+04, -1.071637e+04
-8.911472e+03, +7.796659e+03, -3.245575e+03, -3.354135e+04, +1.194653e+04, +1.048154e+04
+3.632326e+03, -3.245575e+03, +1.994175e+03, +1.386711e+04, -3.366438e+03, -4.701687e+03
+4.176667e+04, -3.354135e+04, +1.386711e+04, +1.741646e+05, -7.001368e+04, -3.765467e+04
-1.567219e+04, +1.194653e+04, -3.366438e+03, -7.001368e+04, +4.195885e+04, +4.655382e+03
-1.071637e+04, +1.048154e+04, -4.701687e+03, -3.765467e+04, +4.655382e+03, +2.479001e+04

Timing offsets (from input data):
    UK002B: 0.000180 s
    UK002N: 0.000000 s

Reference point on the trajectory:
  Time: 2021-08-10 22:15:32.337637 UTC
  Lon     = +-0.016388 +/- 0.0008 deg
  Lat     = +50.694716 +/- 0.0006 deg
  Lat geo = +50.508731 +/- 0.0006 deg
  Ht      =   94909.31 +/- 104.51 m

  JD dynamic   = 2459437.428258352447 
  LST apparent = 293.4756734017 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 282.96451 +/- 1.2198 deg
  Dec       = +48.44992 +/- 0.6017 deg
  Azimuth   = 255.82703 +/- 8.0479 deg
  Elevation = +82.83091 +/- 0.3962 deg
  Vavg      =  22.83373 +/- 0.3380 km/s
  Vinit     =  23.98109 +/- 0.1794 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 284.02913 +/- 1.2198 deg
  Dec       = +48.54288 +/- 0.6017 deg
  Azimuth   = 254.27207 +/- 8.0479 deg
  Elevation = +83.51814 +/- 0.3962 deg
  Vavg      =  22.79932 +/- 0.3380 km/s
  Vinit     =  23.94669 +/- 0.1794 km/s
Radiant (geocentric, J2000):
  R.A.   = 282.21459 +/- 1.2940 deg
  Dec    = +48.27041 +/- 0.6328 deg
  Vg     =  21.25316 +/- 0.2020 km/s
  Vinf   =  23.98109 +/- 0.1794 km/s
  Zc     =   7.12582 +/- 0.4177 deg
  Zg     =   7.55610 +/- 0.4463 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 295.14399 +/- 1.9415 deg
  Bg     = +70.64383 +/- 0.8393 deg
  Vh     =  38.49373 +/- 0.1322 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 240.09729 +/- 0.7210 deg
  Bh     = +31.39504 +/- 0.1890 deg
  Vh_x   =  16.38071 +/- 0.3750 km/s
  Vh_y   =  28.48380 +/- 0.1902 km/s
  Vh_z   = -20.05276 +/- 0.1682 km/s
Orbit:
  La Sun = 138.199040 +/- -0.0000 deg
  a      =   3.301610 +/- 0.1286 AU
  e      =   0.704524 +/- 0.0108
  i      =  31.950529 +/- 0.2113 deg
  peri   = 204.599607 +/- 1.5192 deg
  node   = 138.205150 +/- 0.0000 deg
  Pi     = 342.804756 +/- 1.5192 deg
  q      =   0.975547 +/- 0.0049 AU
  f      = 335.393185 +/- 1.5192 deg
  M      = 356.893929 +/- 0.3109 deg
  Q      =   5.627673 +/- 0.2560 AU
  n      =   0.164292 +/- 0.0093 deg/day
  T      =   5.999143 +/- 0.3532 years
  Last perihelion JD = 2457265.108838 (2015-08-30 14:36:43.611356) +/- 129.3980 days
  Tj     =   2.535528 +/- 0.0577
Shower association:
  IAU No.  =   12
  IAU code =  KCG

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +1.193042e-04, +3.428312e-06, -1.407230e+00, -7.297273e-09, -3.661167e-05, +3.098440e-05
q   , +3.428312e-06, +2.666581e-05, -1.249923e-01, +1.947268e-09, -1.425325e-04, -8.223700e-06
Tp  , -1.407230e+00, -1.249923e-01, +1.689568e+04, +7.955183e-05, +8.805590e-01, -3.379431e-01
node, -7.297273e-09, +1.947268e-09, +7.955183e-05, +8.677501e-13, -9.341150e-09, -3.678401e-09
peri, -3.661167e-05, -1.425325e-04, +8.805590e-01, -9.341150e-09, +7.649466e-04, +3.942486e-05
i   , +3.098440e-05, -8.223700e-06, -3.379431e-01, -3.678401e-09, +3.942486e-05, +1.559335e-05

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.421435
 a2 = 16.143849

Mean time residuals from time vs. length:
  Station with reference time: UK002N
  Avg. res. = 1.387e-05 s
  Stddev    = 3.72e-03 s

Begin point on the trajectory:
  Lon =    -0.016294 +/- 0.0008 deg
  Lat =    50.694731 +/- 0.0006 deg
  Ht  = 94854.05 +/- 108.70 m
End point on the trajectory:
  Lon =    -0.001434 +/- 0.0008 deg
  Lat =    50.697410 +/- 0.0006 deg
  Ht  = 85043.26 +/- 94.35 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
    UK002B,   False,    -1.367130,    50.815550,   22.00,   1.988512,  11.829419,    92788.19,    86260.82,          0.027587,     58.12,     24.47,              49.98, 1.0000,    True,    True, {"ff_name": "FF_UK002B_20210810_221528_869_0184320.fits"}
    UK002N,   False,    -0.727590,    51.263100,   57.00,   0.336969,  16.665860,    94854.05,    85043.26,          0.011456,     23.09,      6.54,              41.40, 1.0000,    True,    True, {"ff_name": "FF_UK002N_20210810_221530_144_0185088.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,     UK002B,       0,  0.094079, 2459437.427458929364, 347.10482,  28.11100,               97.46412,  43.23775,        97.44667,       43.23852,    347.10482,     +28.11100,     347.11482,      +28.12058,  1636348.81, -3767069.07,  4983975.84,      50.695295,       -0.013256,   92788.19,  134337.33,       0.00,             2137.80,     6.52,      0.00,           23418.06,    -11.59,    -27.52,          45.85,  +3.44,  +2.80
  1,     UK002B,       0,  0.134351, 2459437.427459395491, 347.38635,  27.90864,               97.42097,  42.91879,        97.42092,       42.91879,    347.38635,     +27.90864,     347.38702,      +27.90866,  1636207.13, -3766453.66,  4983263.31,      50.695553,       -0.011816,   91843.49,  133752.15,     952.10,             3089.91,    -7.14,  23641.83,           23418.06,     -0.03,     -0.08,           0.13,  +2.97,  +2.34
  2,     UK002B,       0,  0.174627, 2459437.427459861618, 347.66068,  27.68326,               97.40505,  42.58781,        97.39456,       42.58827,    347.66068,     +27.68326,     347.66728,      +27.68905,  1636062.00, -3765823.26,  4982533.41,      50.695817,       -0.010337,   90875.76,  133157.28,    1927.41,             4065.21,     2.30,  24215.54,           23418.06,     -6.98,    -16.57,          27.85,  +2.48,  +1.86
  3,     UK002B,       0,  0.214883, 2459437.427460327744, 347.91937,  27.48258,               97.37753,  42.28378,        97.37061,       42.28408,    347.91937,     +27.48258,     347.92419,      +27.48641,  1635929.43, -3765247.42,  4981866.70,      50.696058,       -0.008999,   89991.79,  132617.06,    2818.28,             4956.09,   -72.21,  22130.22,           23418.06,     -4.61,    -10.94,          18.46,  +1.97,  +1.36
  4,     UK002B,       0,  0.255183, 2459437.427460793871, 348.21702,  27.24051,               97.35522,  41.92572,        97.34261,       41.92628,    348.21702,     +27.24051,     348.22521,      +27.24752,  1635775.12, -3764577.12,  4981090.61,      50.696339,       -0.007415,   88962.78,  131994.42,    3855.32,             5993.13,    -1.61,  25733.01,           23779.24,     -8.40,    -19.96,          33.85,  +1.79,  +1.19
  5,     UK002B,       0,  0.295435, 2459437.427461259998, 348.47899,  27.04932,               97.31382,  41.62581,        97.31944,       41.62556,    348.47899,     +27.04932,     348.47715,      +27.04619,  1635646.29, -3764017.53,  4980442.70,      50.696574,       -0.006119,   88103.71,  131477.14,    4721.07,             6858.87,  -101.15,  21508.12,           23558.13,      3.75,      8.90,          15.16,  +2.26,  +1.67
  6,     UK002B,       0,  0.335743, 2459437.427461726591, 348.81754,  26.86666,               97.19891,  41.28375,        97.29295,       41.27956,    348.81754,     +26.86666,     348.76595,      +26.81404,  1635499.51, -3763379.96,  4979704.52,      50.696841,       -0.004619,   87124.93,  130893.47,    5707.46,             7845.26,   -81.39,  24471.28,           23577.08,     62.77,    149.05,         254.85,  +2.18,  +1.60
  7,     UK002B,       0,  0.375991, 2459437.427462192252, 349.04020,  26.62705,               97.23419,  40.97352,        97.26972,       40.97195,    349.04020,     +26.62705,     349.02168,      +26.60712,  1635369.94, -3762817.10,  4979052.83,      50.697077,       -0.003314,   86260.82,  130381.17,    6578.25,             8716.05,  -175.78,  21635.75,           23423.31,     23.73,     56.37,          96.76,  +2.65,  +2.07
  0,     UK002N,       0,  0.000000, 2459437.427457611542, 317.86067,  15.58442,              141.42903,  49.06035,       141.41426,       49.06197,    317.86067,     +15.58442,     317.86918,      +15.58983,  1636658.63, -3768414.87,  4985534.04,      50.694731,       -0.016294,   94854.05,  124804.46,       0.00,               55.70,   180.53,      0.00,           21587.16,     -5.83,    -20.57,          35.34,  +3.55,  +3.07
  1,     UK002N,       0,  0.040244, 2459437.427458077203, 318.04072,  15.33998,              141.33835,  48.76655,       141.34474,       48.76585,    318.04072,     +15.33998,     318.03719,      +15.33763,  1636516.86, -3767799.04,  4984821.01,      50.694989,       -0.014855,   93908.73,  124110.54,     952.76,             1008.46,   168.20,  23674.60,           21587.16,      2.52,      8.90,          15.37,  +3.51,  +3.04
  2,     UK002N,       0,  0.080504, 2459437.427458543330, 318.21019,  15.07492,              141.27475,  48.45795,       141.27320,       48.45812,    318.21019,     +15.07492,     318.21143,      +15.07549,  1636371.24, -3767166.51,  4984088.65,      50.695254,       -0.013371,   92937.76,  123401.49,    1931.36,             1987.06,   181.32,  24306.98,           21587.16,     -0.61,     -2.16,           3.75,  +4.22,  +3.76
  3,     UK002N,       0,  0.120672, 2459437.427459008060, 318.32719,  14.90578,              141.22248,  48.25751,       141.22897,       48.25680,    318.32719,     +14.90578,     318.32392,      +14.90338,  1636276.45, -3766754.79,  4983611.96,      50.695426,       -0.012463,   92305.73,  122940.23,    2568.33,             2624.03,  -144.98,  15857.76,           21587.16,      2.56,      9.03,          15.75,  +2.76,  +2.31
  4,     UK002N,       0,  0.160968, 2459437.427459474653, 318.53343,  14.60487,              141.13235,  47.90157,       141.14694,       47.89996,    318.53343,     +14.60487,     318.52554,      +14.59943,  1636111.09, -3766036.51,  4982780.32,      50.695727,       -0.010754,   91203.12,  122142.94,    3679.59,             3735.29,    -0.07,  27577.38,           22305.72,      5.76,     20.33,          35.68,  +1.93,  +1.50
  5,     UK002N,       0,  0.201248, 2459437.427459940780, 318.69603,  14.31349,              141.09413,  47.57138,       141.07350,       47.57365,    318.69603,     +14.31349,     318.70905,      +14.32122,  1635961.65, -3765387.35,  4982028.71,      50.695999,       -0.009226,   90206.59,  121426.11,    4683.91,             4739.61,    38.30,  24933.49,           22886.73,     -8.14,    -28.77,          50.78,  +2.03,  +1.61
  6,     UK002N,       0,  0.241524, 2459437.427460406907, 318.90141,  14.04248,              140.98773,  47.24287,       140.99966,       47.24156,    318.90141,     +14.04248,     318.89533,      +14.03799,  1635811.37, -3764734.58,  4981272.93,      50.696273,       -0.007687,   89204.52,  120709.43,    5693.81,             5749.51,    82.33,  25074.34,           23328.70,      4.71,     16.64,          29.55,  +1.87,  +1.46
  7,     UK002N,       0,  0.281772, 2459437.427460872568, 319.06504,  13.78900,              140.92572,  46.94674,       140.93537,       46.94568,    319.06504,     +13.78900,     319.06047,      +13.78536,  1635678.84, -3764158.91,  4980606.40,      50.696514,       -0.006349,   88320.76,  120080.26,    6584.44,             6640.14,     7.77,  22128.65,           23412.76,      3.81,     13.46,          24.02,  +2.01,  +1.61
  8,     UK002N,       0,  0.322000, 2459437.427461338229, 319.19264,  13.55228,              140.90061,  46.68007,       140.87947,       46.68239,    319.19264,     +13.55228,     319.20665,      +13.56030,  1635561.94, -3763651.12,  4980018.47,      50.696727,       -0.005189,   87541.21,  119527.41,    7370.04,             7425.74,  -171.34,  19528.66,           23193.20,     -8.34,    -29.50,          52.90,  +2.17,  +1.78
  9,     UK002N,       0,  0.362264, 2459437.427461804356, 319.40698,  13.30067,              140.77231,  46.36546,       140.81078,       46.36122,    319.40698,     +13.30067,     319.38534,      +13.28601,  1635421.04, -3763039.07,  4979309.82,      50.696984,       -0.003755,   86601.58,  118865.55,    8316.96,             8372.66,  -190.00,  23517.70,           23099.13,     15.20,     53.66,          96.78,  +2.02,  +1.64
 10,     UK002N,       0,  0.402536, 2459437.427462270483, 319.56785,  13.01619,              140.73264,  46.04186,       140.74312,       46.04071,    319.56785,     +13.01619,     319.56319,      +13.01218,  1635281.97, -3762434.99,  4978610.41,      50.697238,       -0.002342,   85674.19,  118216.03,    9251.53,             9307.23,  -221.19,  23206.54,           23052.70,      4.14,     14.62,          26.52,  +3.24,  +2.88
 11,     UK002N,       0,  0.442720, 2459437.427462735679, 319.68687,  12.82765,              140.69046,  45.82245,       140.69921,       45.82149,    319.68687,     +12.82765,     319.68341,      +12.82430,  1635187.36, -3762024.06,  4978134.63,      50.697410,       -0.001434,   85043.26,  117774.68,    9887.28,             9942.98,  -549.10,  15820.99,           22748.30,      3.45,     12.20,          22.21,  +3.98,  +3.62

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.