Orbital Analysis for matched events on 20210816_025257.667_UK

Summary for Event
-----------------
shower ID 164 NZC
Lg 350.46° Bg 12.51° Vg 35.07km/s
mass 0.06590g, abs. mag -0.1
Path Details
------------
start -0.47° 51.37° 91.53km
end   -0.41° 51.44° 83.20km

Orbit Details
-------------
Semimajor axis 1.59A.U., eccentricity 0.91, inclination 28.97°, Period 2.00Y, LA Sun 143.19°, last Perihelion 2019-09-25

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: 2459442.620111887343
Time: 2021-08-16 02:52:57.667066 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK000F and UK002C
 Convergence angle = 17.81424 deg
 R.A. = 347.27995  Dec =  +8.90786 deg

Best intersection: Stations UK000F and UK002C with Qconv = 17.81 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   4012388.97 +/- 87.00 m
 Y =    527901.62 +/- 55.88 m
 Z =   5030972.64 +/- 40.14 m
 Vx =    35403.37 +/- 414.34 m/s
 Vy =    -8215.14 +/- 334.86 m/s
 Vz =     5712.56 +/- 217.36 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+9.986803e+03, +5.793427e+03, +3.817310e+03, +3.813651e+04, +3.480337e+04, +1.808441e+04
+5.793427e+03, +3.591458e+03, +2.344250e+03, +2.260105e+04, +2.005678e+04, +1.099464e+04
+3.817310e+03, +2.344250e+03, +1.692487e+03, +1.521439e+04, +1.312379e+04, +8.217755e+03
+3.813651e+04, +2.260105e+04, +1.521439e+04, +1.759512e+05, +1.540714e+05, +8.396772e+04
+3.480337e+04, +2.005678e+04, +1.312379e+04, +1.540714e+05, +1.394858e+05, +7.172696e+04
+1.808441e+04, +1.099464e+04, +8.217755e+03, +8.396772e+04, +7.172696e+04, +4.593085e+04

Timing offsets (from input data):
    UK000F: 0.000000 s
    UK002C: 0.002393 s

Reference point on the trajectory:
  Time: 2021-08-16 02:52:57.667066 UTC
  Lon     = +-0.470419 +/- 0.0006 deg
  Lat     = +51.371594 +/- 0.0004 deg
  Lat geo = +51.186434 +/- 0.0004 deg
  Ht      =   91499.01 +/- 88.44 m

  JD dynamic   = 2459442.620912628248 
  LST apparent = 7.4952359137 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 346.93605 +/- 0.6622 deg
  Dec       =  +8.93267 +/- 0.2550 deg
  Azimuth   = 209.00778 +/- 0.7863 deg
  Elevation = +44.32438 +/- 0.4235 deg
  Vavg      =  36.19632 +/- 0.2235 km/s
  Vinit     =  36.79022 +/- 0.3586 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 347.37289 +/- 0.6622 deg
  Dec       =  +8.95755 +/- 0.2550 deg
  Azimuth   = 208.44288 +/- 0.7863 deg
  Elevation = +44.47914 +/- 0.4235 deg
  Vavg      =  36.09499 +/- 0.2235 km/s
  Vinit     =  36.68889 +/- 0.3586 km/s
Radiant (geocentric, J2000):
  R.A.   = 346.30497 +/- 0.6807 deg
  Dec    =  +7.72236 +/- 0.2833 deg
  Vg     =  35.07214 +/- 0.3760 km/s
  Vinf   =  36.79022 +/- 0.3586 km/s
  Zc     =  45.51376 +/- 0.4246 deg
  Zg     =  46.66294 +/- 0.4586 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 350.45992 +/- 0.7372 deg
  Bg     = +12.50950 +/- 0.1276 deg
  Vh     =  34.53134 +/- 0.1020 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 299.15515 +/- 0.9692 deg
  Bh     = +12.70878 +/- 0.1921 deg
  Vh_x   = -16.41070 +/- 0.4341 km/s
  Vh_y   =  29.41754 +/- 0.3826 km/s
  Vh_z   =  -7.59675 +/- 0.0994 km/s
Orbit:
  La Sun = 143.185639 +/- 0.0000 deg
  a      =   1.585052 +/- 0.0190 AU
  e      =   0.905919 +/- 0.0046
  i      =  28.970835 +/- 1.2944 deg
  peri   = 322.557931 +/- 1.3145 deg
  node   = 143.192941 +/- 0.0003 deg
  Pi     = 105.750872 +/- 1.3142 deg
  q      =   0.149123 +/- 0.0088 AU
  f      = 217.435615 +/- 1.3143 deg
  M      = 341.095595 +/- 0.2062 deg
  Q      =   3.020981 +/- 0.0297 AU
  n      =   0.493900 +/- 0.0094 deg/day
  T      =   1.995565 +/- 0.0356 years
  Last perihelion JD = 2458752.003772 (2019-09-25 12:05:25.928991) +/- 12.6856 days
  Tj     =   3.692241 +/- 0.0255
Shower association:
  IAU No.  =  164
  IAU code =  NZC

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +2.232069e-05, -4.380632e-05, +6.796415e-02, -2.265487e-08, +1.150165e-04, +1.035269e-04
q   , -4.380632e-05, +8.687515e-05, -1.400171e-01, +4.427652e-08, -2.288496e-04, -2.024821e-04
Tp  , +6.796415e-02, -1.400171e-01, +2.558527e+02, -6.782317e-05, +3.732301e-01, +3.111738e-01
node, -2.265487e-08, +4.427652e-08, -6.782317e-05, +2.474675e-11, -1.161931e-07, -1.132150e-07
peri, +1.150165e-04, -2.288496e-04, +3.732301e-01, -1.161931e-07, +6.035029e-04, +5.315626e-04
i   , +1.035269e-04, -2.024821e-04, +3.111738e-01, -1.132150e-07, +5.315626e-04, +5.182075e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.004269
 a2 = 32.537415

Mean time residuals from time vs. length:
  Station with reference time: UK000F
  Avg. res. = 5.837e-06 s
  Stddev    = 2.42e-03 s

Begin point on the trajectory:
  Lon =    -0.470607 +/- 0.0007 deg
  Lat =    51.371381 +/- 0.0004 deg
  Ht  = 91525.81 +/- 82.01 m
End point on the trajectory:
  Lon =    -0.413264 +/- 0.0010 deg
  Lat =    51.437584 +/- 0.0001 deg
  Ht  = 83195.87 +/- 44.68 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
    UK000F,   False,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,    91525.81,    83531.80,          0.007042,     13.30,      6.66,              48.00, 1.0000,    True,    True, {"ff_name": "FF_UK000F_20210816_025256_437_0609024.fits"}
    UK002C,   False,    -1.801980,    51.351940,  130.00,   0.002348,  34.539999,    91482.77,    83195.87,          0.015472,     34.45,      5.53,              75.00, 1.0000,    True,    True, {"ff_name": "FF_UK002C_20210816_025249_793_0610304.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,     UK000F,       0,  0.000000, 2459442.620111887343,  36.88684,  17.09827,              134.21991,  47.82375,       134.21096,       47.83684,     36.88684,     +17.09827,      36.88601,      +17.11266,  4012425.88,   527893.06,  5030978.59,      51.371381,       -0.470607,   91525.81,  122660.49,       0.00,               38.36,   358.30,      0.00,           34896.63,    -13.81,     27.58,          51.87,  +3.12,  +2.68
  1,     UK000F,       0,  0.040092, 2459442.620112351142,  37.30529,  17.12724,              133.67335,  47.66342,       133.66927,       47.66931,     37.30529,     +17.12724,      37.30507,      +17.13373,  4011328.88,   528147.61,  5030801.59,      51.377702,       -0.465174,   90729.32,  121913.30,    1139.97,             1101.62,   -53.43,  28433.96,           34896.63,     -6.19,     12.37,          23.40,  +1.66,  +1.23
  2,     UK000F,       0,  0.080220, 2459442.620112815872,  37.88685,  17.16950,              132.91724,  47.43945,       132.92255,       47.43195,     37.88685,     +17.16950,      37.88753,      +17.16120,  4009830.97,   528495.19,  5030559.89,      51.386334,       -0.457690,   89641.90,  120904.88,    2696.56,             2658.20,    26.84,  38790.51,           34896.63,      7.84,    -15.69,          29.92,  +0.16,  -0.25
  3,     UK000F,       0,  0.120364, 2459442.620113280136,  38.43915,  17.17918,              132.22582,  47.19690,       132.22157,       47.20279,     38.43915,     +17.17918,      38.43930,      +17.18574,  4008434.11,   528819.33,  5030334.50,      51.394387,       -0.450717,   88628.00,  119974.57,    4148.14,             4109.78,     1.51,  36159.26,           34896.63,     -6.15,     12.29,          23.62,  -0.09,  -0.49
  4,     UK000F,       0,  0.160496, 2459442.620113744866,  39.02109,  17.21562,              131.48448,  46.96129,       131.48819,       46.95624,     39.02109,     +17.21562,      39.02195,      +17.20998,  4006982.93,   529156.06,  5030100.34,      51.402754,       -0.443462,   87574.83,  119019.25,    5656.17,             5617.81,    33.08,  37576.69,           35688.83,      5.25,    -10.49,          20.33,  -0.29,  -0.67
  5,     UK000F,       0,  0.200636, 2459442.620114209596,  39.57710,  17.23158,              130.79491,  46.71676,       130.79489,       46.71678,     39.57710,     +17.23158,      39.57788,      +17.23161,  4005619.16,   529472.52,  5029880.29,      51.410620,       -0.436649,   86585.25,  118131.51,    7073.36,             7035.00,   -26.49,  35306.19,           35860.42,     -0.02,      0.04,           0.08,  -0.33,  -0.69
  6,     UK000F,       0,  0.240776, 2459442.620114673860,  40.17613,  17.25688,              130.05207,  46.45729,       130.05459,       46.45398,     40.17613,     +17.25688,      40.17722,      +17.25314,  4004172.45,   529808.22,  5029646.85,      51.418966,       -0.429406,   85535.64,  117201.43,    8576.74,             8538.39,     0.13,  37453.53,           36092.43,      3.42,     -6.85,          13.48,  -0.27,  -0.61
  7,     UK000F,       0,  0.280912, 2459442.620115138590,  40.72593,  17.27173,              129.38163,  46.20913,       129.38183,       46.20886,     40.72593,     +17.27173,      40.72706,      +17.27143,  4002864.15,   530111.80,  5029435.75,      51.426516,       -0.422868,   84586.59,  116369.96,    9936.29,             9897.93,  -116.93,  33873.51,           36004.15,      0.27,     -0.54,           1.08,  +0.13,  -0.20
  8,     UK000F,       0,  0.321072, 2459442.620115603320,  41.34705,  17.28398,              128.63362,  45.92179,       128.62934,       45.92722,     41.34705,     +17.28398,      41.34816,      +17.29017,  4001409.87,   530449.26,  5029201.09,      51.434910,       -0.415577,   83531.80,  115458.07,   11447.54,            11409.18,   -83.18,  37630.66,           36071.47,     -5.58,     11.17,          22.31,  +1.15,  +0.84
  0,     UK002C,       0,  0.016985, 2459442.620112041011,  66.20157,  33.81961,               88.12591,  43.93329,        88.12054,       43.93650,     66.20157,     +33.81961,      66.20174,      +33.82464,  4012366.61,   527906.81,  5030969.03,      51.371723,       -0.470360,   91482.77,  130671.62,       0.00,               23.23,  -281.69,      0.00,           37646.70,     -1.82,     11.32,          18.10,  +3.05,  +2.47
  1,     UK002C,       0,  0.057465, 2459442.620112509467,  67.18796,  33.79541,               87.40354,  43.30175,        87.39791,       43.30509,     67.18796,     +33.79541,      67.18837,      +33.80069,  4010513.47,   528336.82,  5030670.01,      51.382401,       -0.461067,   90137.35,  130215.67,    1925.74,             1948.97,   154.78,  47572.52,           37646.70,     -1.91,     11.86,          19.03,  +1.35,  +0.78
  2,     UK002C,       0,  0.097777, 2459442.620112976059,  67.81310,  33.76080,               86.96881,  42.88892,        86.94595,       42.90244,     67.81310,     +33.76080,      67.81456,      +33.78230,  4009341.25,   528608.83,  5030480.87,      51.389157,       -0.455245,   89286.43,  129937.95,    3143.87,             3167.11,  -110.17,  30217.76,           37646.70,     -7.76,     48.19,          77.48,  +0.58,  +0.01
  3,     UK002C,       0,  0.138153, 2459442.620113443583,  68.59716,  33.74197,               86.40172,  42.38762,        86.38874,       42.39525,     68.59716,     +33.74197,      68.59842,      +33.75421,  4007881.28,   528947.61,  5030245.29,      51.397574,       -0.447949,   88226.77,  129609.25,    4661.04,             4684.27,   -78.45,  37575.82,           37646.70,     -4.40,     27.37,          44.12,  +0.50,  -0.06
  4,     UK002C,       0,  0.178557, 2459442.620113911107,  69.40635,  33.69659,               85.84647,  41.85335,        85.82184,       41.86776,     69.40635,     +33.69659,      69.40866,      +33.71988,  4006378.77,   529296.26,  5030002.86,      51.406239,       -0.440430,   87136.42,  129288.84,    6222.40,             6245.64,    -3.55,  38643.91,           37591.51,     -8.37,     51.97,          83.98,  +0.32,  -0.24
  5,     UK002C,       0,  0.218925, 2459442.620114378165,  70.19171,  33.68834,               85.27507,  41.35886,        85.28207,       41.35479,     70.19171,     +33.68834,      70.19203,      +33.68171,  4004931.56,   529632.07,  5029769.34,      51.414587,       -0.433188,   86086.37,  128996.93,    7726.30,             7749.54,    15.20,  37254.74,           37527.65,      2.37,    -14.78,          23.94,  +0.23,  -0.32
  6,     UK002C,       0,  0.259277, 2459442.620114845224,  70.92760,  33.66739,               84.75600,  40.88710,        84.78318,       40.87135,     70.92760,     +33.66739,      70.92634,      +33.64157,  4003579.17,   529945.89,  5029551.12,      51.422390,       -0.426428,   85105.25,  128738.75,    9131.67,             9154.90,   -63.99,  34827.69,           37215.79,      9.19,    -57.44,          93.20,  +0.45,  -0.10
  7,     UK002C,       0,  0.299673, 2459442.620115312748,  71.71178,  33.60833,               84.24193,  40.36032,        84.25735,       40.35142,     71.71178,     +33.60833,      71.71154,      +33.59363,  4002137.71,   530280.37,  5029318.53,      51.430709,       -0.419206,   84059.68,  128480.41,   10629.60,            10652.84,   -52.24,  37081.25,           37074.59,      5.23,    -32.64,          53.06,  +0.75,  +0.21
  8,     UK002C,       0,  0.340005, 2459442.620115779806,  72.36051,  33.55403,               83.82374,  39.92118,        83.82735,       39.91911,     72.36051,     +33.55403,      72.36150,      +33.55059,  4000946.68,   530556.74,  5029126.35,      51.437584,       -0.413264,   83195.87,  128278.12,   11867.28,            11890.51,  -298.38,  30687.25,           36583.40,      1.22,     -7.64,          12.43,  +1.61,  +1.07

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.