Orbital Analysis for matched events on 20210816_234148.171_UK

Summary for Event
-----------------
shower ID 197 AUD
Lg 295.25° Bg 82.39° Vg 22.30km/s
mass 0.03228g, abs. mag 1.5
Path Details
------------
start -0.42° 51.36° 93.03km
end   -0.38° 51.34° 83.94km

Orbit Details
-------------
Semimajor axis 2.91A.U., eccentricity 0.65, inclination 35.63°, Period 4.96Y, LA Sun 144.02°, last Perihelion 2016-09-07

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: 2459443.487363097724
Time: 2021-08-16 23:41:48.191881 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002B and UK002C
 Convergence angle = 30.77115 deg
 R.A. = 280.96303  Dec = +60.42036 deg

Best intersection: Stations UK002B and UK002C with Qconv = 30.77 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3129226.46 +/- 95.00 m
 Y =  -2569710.79 +/- 40.62 m
 Z =   5031150.15 +/- 118.90 m
 Vx =     2017.14 +/- 358.58 m/s
 Vy =   -12471.97 +/- 184.66 m/s
 Vz =    21468.97 +/- 315.98 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
+9.244196e+03, +2.810313e+03, +8.982342e+03, +3.304581e+04, +1.328198e+04, +2.566042e+04
+2.810313e+03, +1.858787e+03, +1.554153e+03, +1.072395e+04, +5.146099e+03, +8.436897e+03
+8.982342e+03, +1.554153e+03, +1.319449e+04, +3.606661e+04, +1.867499e+04, +3.207289e+04
+3.304581e+04, +1.072395e+04, +3.606661e+04, +1.312210e+05, +6.186385e+04, +1.085315e+05
+1.328198e+04, +5.146099e+03, +1.867499e+04, +6.186385e+04, +3.892316e+04, +5.816313e+04
+2.566042e+04, +8.436897e+03, +3.207289e+04, +1.085315e+05, +5.816313e+04, +9.587571e+04

Timing offsets (from input data):
    UK002B: 0.000000 s
    UK002C: 0.000257 s

Reference point on the trajectory:
  Time: 2021-08-16 23:41:48.191881 UTC
  Lon     = +-0.423723 +/- 0.0012 deg
  Lat     = +51.357594 +/- 0.0003 deg
  Lat geo = +51.172456 +/- 0.0003 deg
  Ht      =   92989.35 +/- 127.40 m

  JD dynamic   = 2459443.488164072856 
  LST apparent = 320.6072691586 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      = 279.18712 +/- 1.7631 deg
  Dec       = +59.52409 +/- 0.6206 deg
  Azimuth   = 305.70284 +/- 1.6050 deg
  Elevation = +65.59442 +/- 0.8514 deg
  Vavg      =  24.59060 +/- 0.2427 km/s
  Vinit     =  24.91055 +/- 0.2101 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      = 280.20690 +/- 1.7631 deg
  Dec       = +59.90892 +/- 0.6206 deg
  Azimuth   = 306.68481 +/- 1.6050 deg
  Elevation = +66.09551 +/- 0.8514 deg
  Vavg      =  24.49308 +/- 0.2427 km/s
  Vinit     =  24.81304 +/- 0.2101 km/s
Radiant (geocentric, J2000):
  R.A.   = 276.39412 +/- 1.8699 deg
  Dec    = +59.51595 +/- 0.6835 deg
  Vg     =  22.29570 +/- 0.2344 km/s
  Vinf   =  24.91055 +/- 0.2101 km/s
  Zc     =  24.51405 +/- 0.8476 deg
  Zg     =  25.89297 +/- 0.9211 deg
Radiant (ecliptic geocentric, J2000):
  Lg     = 295.25225 +/- 8.6765 deg
  Bg     = +82.38982 +/- 0.3622 deg
  Vh     =  38.04593 +/- 0.1923 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     = 239.44091 +/- 0.3348 deg
  Bh     = +35.51112 +/- 0.6588 deg
  Vh_x   =  15.74572 +/- 0.3510 km/s
  Vh_y   =  26.66800 +/- 0.2773 km/s
  Vh_z   = -22.09940 +/- 0.2438 km/s
Orbit:
  La Sun = 144.019161 +/- 0.0000 deg
  a      =   2.909728 +/- 0.1375 AU
  e      =   0.654639 +/- 0.0163
  i      =  35.632425 +/- 0.6729 deg
  peri   = 191.156172 +/- 0.7466 deg
  node   = 144.024748 +/- 0.0001 deg
  Pi     = 335.180920 +/- 0.7464 deg
  q      =   1.004908 +/- 0.0009 AU
  f      = 348.837669 +/- 0.7465 deg
  M      = 358.229920 +/- 0.2465 deg
  Q      =   4.814548 +/- 0.2743 AU
  n      =   0.198576 +/- 0.0144 deg/day
  T      =   4.963400 +/- 0.3517 years
  Last perihelion JD = 2457639.488800 (2016-09-07 23:43:52.306315) +/- 129.0110 days
  Tj     =   2.707401 +/- 0.0733
Shower association:
  IAU No.  =  197
  IAU code =  AUD

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , +2.721277e-04, +1.176509e-05, -2.169006e+00, +3.413117e-08, -1.813034e-04, -1.874548e-04
q   , +1.176509e-05, +8.136056e-07, -9.389582e-02, +1.692109e-09, -1.183870e-05, -9.342012e-06
Tp  , -2.169006e+00, -9.389582e-02, +1.746020e+04, -2.699112e-04, +1.451324e+00, +1.478184e+00
node, +3.413117e-08, +1.692109e-09, -2.699112e-04, +4.497923e-12, -2.550829e-08, -2.479419e-08
peri, -1.813034e-04, -1.183870e-05, +1.451324e+00, -2.550829e-08, +1.734379e-04, +1.406146e-04
i   , -1.874548e-04, -9.342012e-06, +1.478184e+00, -2.479419e-08, +1.406146e-04, +1.367880e-04

Jacchia fit on lag = -|a1|*exp(|a2|*t):
 a1 = 0.010087
 a2 = 25.138835

Mean time residuals from time vs. length:
  Station with reference time: UK002B
  Avg. res. = 1.567e-05 s
  Stddev    = 3.96e-03 s

Begin point on the trajectory:
  Lon =    -0.423953 +/- 0.0012 deg
  Lat =    51.357697 +/- 0.0003 deg
  Ht  = 93033.43 +/- 109.16 m
End point on the trajectory:
  Lon =    -0.378184 +/- 0.0009 deg
  Lat =    51.336327 +/- 0.0002 deg
  Ht  = 83941.04 +/- 77.22 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,   0.448240,  15.274478,    93033.43,    83941.04,          0.030166,     67.56,      4.26,              52.34, 1.0000,    True,    True, {"ff_name": "FF_UK002B_20210816_234144_138_0333056.fits"}
    UK002C,   False,    -1.801980,    51.351940,  130.00,   0.000522,  32.771622,    92940.89,    83977.22,          0.014327,     32.91,      1.36,              65.89, 1.0000,    True,    True, {"ff_name": "FF_UK002C_20210816_234141_486_0325888.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,  0.000000, 2459443.487363331951,  40.75828,  58.63657,               47.14592,  45.46030,        47.24714,       45.50163,     40.75828,     +58.63657,      40.62561,      +58.59224,  3129230.38, -2569735.03,  5031191.87,      51.357697,       -0.423953,   93033.43,  129508.66,       0.00,               48.41,   -63.87,      0.00,           26987.41,     11.67,    185.27,         295.65,  +5.73,  +5.17
  1,     UK002B,       0,  0.040240, 2459443.487363797612,  40.90774,  58.31167,               47.50560,  45.24172,        47.47108,       45.22763,     40.90774,     +58.31167,      40.95316,      +58.32671,  3129157.59, -2569284.95,  5030417.11,      51.355776,       -0.419853,   92214.82,  128967.21,     898.95,              850.54,  -264.14,  22339.73,           26987.41,     -3.97,    -63.12,         101.15,  +5.02,  +4.47
  2,     UK002B,       0,  0.080644, 2459443.487364265136,  41.46474,  57.94160,               47.77414,  44.80878,        47.80107,       44.81974,     41.46474,     +57.94160,      41.42996,      +57.92993,  3129050.89, -2568625.25,  5029281.52,      51.352960,       -0.413764,   91014.96,  128183.60,    2216.59,             2168.18,    47.02,  32611.63,           26987.41,      3.10,     49.17,          79.29,  +3.26,  +2.72
  3,     UK002B,       0,  0.120936, 2459443.487364731729,  41.78244,  57.63606,               48.03870,  44.51446,        48.04257,       44.51604,     41.78244,     +57.63606,      41.77798,      +57.63439,  3128972.25, -2568138.98,  5028444.48,      51.350883,       -0.409319,   90130.56,  127609.92,    3187.81,             3139.41,    14.54,  24104.61,           26987.41,      0.44,      7.06,          11.43,  +2.85,  +2.32
  4,     UK002B,       0,  0.161260, 2459443.487365198322,  42.16327,  57.30302,               48.30807,  44.17426,        48.31043,       44.17522,     42.16327,     +57.30302,      42.16095,      +57.30201,  3128885.05, -2567599.87,  5027516.45,      51.348580,       -0.404371,   89150.04,  126980.16,    4264.61,             4216.20,    86.84,  26703.54,           26830.18,      0.27,      4.30,           7.00,  +3.37,  +2.85
  5,     UK002B,       0,  0.201544, 2459443.487365664449,  42.49774,  57.02335,               48.52340,  43.87907,        48.53596,       43.88415,     42.49774,     +57.02335,      42.48232,      +57.01798,  3128811.28, -2567143.71,  5026731.23,      51.346630,       -0.400210,   88320.41,  126450.98,    5175.70,             5127.29,    -5.56,  22616.75,           26183.93,      1.44,     22.88,          37.40,  +3.06,  +2.55
  6,     UK002B,       0,  0.241868, 2459443.487366131041,  42.87983,  56.70191,               48.76551,  43.53801,        48.79285,       43.54906,     42.87983,     +56.70191,      42.84542,      +56.69029,  3128727.33, -2566624.65,  5025837.74,      51.344411,       -0.395451,   87376.40,  125854.95,    6212.42,             6164.01,    26.67,  25709.71,           25902.22,      3.13,     49.73,          81.67,  +2.45,  +1.95
  7,     UK002B,       0,  0.282132, 2459443.487366597168,  43.17134,  56.43209,               48.97490,  43.26332,        49.00091,       43.27382,     43.17134,     +56.43209,      43.13887,      +56.42108,  3128658.94, -2566201.79,  5025109.83,      51.342602,       -0.391604,   86607.33,  125372.35,    7057.02,             7008.61,  -131.73,  20976.59,           25374.94,      2.98,     47.29,          77.96,  +2.44,  +1.95
  8,     UK002B,       0,  0.322484, 2459443.487367064226,  43.56400,  56.07813,               49.23909,  42.89504,        49.27408,       42.90914,     43.56400,     +56.07813,      43.52014,      +56.06339,  3128569.48, -2565648.66,  5024157.68,      51.340236,       -0.386520,   85601.37,  124748.85,    8161.80,             8113.40,   -32.14,  27378.67,           25262.48,      4.00,     63.57,         105.31,  +2.09,  +1.61
  9,     UK002B,       0,  0.362772, 2459443.487367530819,  43.84538,  55.76142,               49.49703,  42.59624,        49.50327,       42.59875,     43.84538,     +55.76142,      43.83890,      +55.75880,  3128494.04, -2565182.25,  5023354.81,      51.338239,       -0.382258,   84753.13,  124227.19,    9093.37,             9044.97,  -104.16,  23122.77,           25088.59,      0.71,     11.33,          18.85,  +2.75,  +2.28
 10,     UK002B,       0,  0.403056, 2459443.487367996946,  44.14249,  55.46499,               49.72029,  42.29810,        49.72214,       42.29884,     44.14249,     +55.46499,      44.14185,      +55.46421,  3128421.82, -2564735.71,  5022586.16,      51.336327,       -0.378184,   83941.04,  123731.94,    9985.24,             9936.84,  -215.79,  22139.55,           24859.79,      0.21,      3.36,           5.62,  +3.28,  +2.82
  0,     UK002C,       0,  0.001364, 2459443.487363123801,  19.21570,  32.93729,               89.07691,  43.37927,        89.09392,       43.38262,     19.21570,     +32.93729,      19.20289,      +32.93032,  3129222.15, -2569684.15,  5031104.29,      51.357480,       -0.423395,   92940.89,  134053.50,       0.00,               53.21,   -93.05,      0.00,           25420.92,      1.24,     29.95,          46.13,  +4.04,  +3.40
  1,     UK002C,       0,  0.041708, 2459443.487363590859,  19.47389,  32.58861,               89.23259,  42.98452,        89.24189,       42.98635,     19.47389,     +32.58861,      19.46704,      +32.58480,  3129137.04, -2569157.88,  5030198.38,      51.355234,       -0.418573,   91983.71,  133633.74,    1051.13,             1104.34,   -46.91,  26054.15,           25420.92,      0.68,     16.41,          25.35,  +4.07,  +3.44
  2,     UK002C,       0,  0.082052, 2459443.487364057917,  19.71224,  32.22594,               89.41362,  42.59162,        89.38908,       42.58680,     19.71224,     +32.22594,      19.73119,      +32.23603,  3129051.79, -2568630.81,  5029291.10,      51.352984,       -0.413742,   91025.08,  133220.28,    2103.85,             2157.06,     0.82,  26093.56,           25420.92,     -1.79,    -43.44,          67.31,  +3.30,  +2.68
  3,     UK002C,       0,  0.122376, 2459443.487364524510,  19.99149,  31.92535,               89.49707,  42.21406,        89.52293,       42.21914,     19.99149,     +31.92535,      19.97231,      +31.91470,  3128973.79, -2568148.50,  5028460.86,      51.350924,       -0.409334,   90147.87,  132847.32,    3067.18,             3120.40,   -40.34,  23889.86,           25420.92,      1.90,     45.90,          71.33,  +3.16,  +2.54
  4,     UK002C,       0,  0.162712, 2459443.487364991102,  20.22312,  31.57408,               89.66439,  41.83100,        89.66255,       41.83064,     20.22312,     +31.57408,      20.22519,      +31.57484,  3128891.90, -2567642.19,  5027589.30,      51.348761,       -0.404698,   89227.00,  132462.57,    4078.46,             4131.67,   -33.86,  25071.31,           25220.36,     -0.13,     -3.26,           5.09,  +2.52,  +1.91
  5,     UK002C,       0,  0.203060, 2459443.487365458161,  20.47908,  31.22089,               89.81087,  41.43039,        89.80495,       41.42923,     20.47908,     +31.22089,      20.48446,      +31.22334,  3128807.84, -2567122.44,  5026694.62,      51.346539,       -0.399933,   88281.72,  132074.65,    5116.56,             5169.78,    -0.84,  25728.78,           25235.71,     -0.44,    -10.56,          16.51,  +2.26,  +1.66
  6,     UK002C,       0,  0.243384, 2459443.487365924753,  20.72986,  30.90521,               89.92143,  41.05771,        89.93436,       41.06025,     20.72986,     +30.90521,      20.72093,      +30.89985,  3128730.97, -2566647.15,  5025876.46,      51.344507,       -0.395590,   87417.31,  131725.27,    6065.87,             6119.08,   -56.03,  23541.99,           25059.78,      0.96,     23.14,          36.26,  +2.04,  +1.44
  7,     UK002C,       0,  0.283788, 2459443.487366392743,  21.00957,  30.49310,               90.09854,  40.59976,        90.09378,       40.59883,     21.00957,     +30.49310,      21.01442,      +30.49508,  3128635.61, -2566057.58,  5024861.59,      51.341985,       -0.390161,   86345.08,  131302.17,    7243.43,             7296.65,   115.05,  29144.68,           25327.48,     -0.35,     -8.55,          13.44,  +2.32,  +1.73
  8,     UK002C,       0,  0.324088, 2459443.487366858870,  21.22962,  30.19174,               90.21286,  40.25434,        90.21173,       40.25412,     21.22962,     +30.19174,      21.23184,      +30.19220,  3128564.63, -2565618.67,  5024106.06,      51.340107,       -0.386161,   85546.84,  130990.84,    8120.07,             8173.29,   -12.21,  21752.87,           25214.29,     -0.08,     -2.03,           3.20,  +2.23,  +1.64
  9,     UK002C,       0,  0.364400, 2459443.487367325462,  21.44113,  29.86798,               90.35234,  39.89802,        90.33347,       39.89433,     21.44113,     +29.86798,      21.45729,      +29.87583,  3128490.94, -2565163.06,  5023321.79,      51.338157,       -0.382002,   84718.25,  130673.39,    9030.06,             9083.28,  -106.41,  22573.69,           25012.74,     -1.41,    -34.03,          53.77,  +2.60,  +2.02
 10,     UK002C,       0,  0.404680, 2459443.487367791589,  21.62664,  29.57543,               90.48033,  39.57889,        90.44179,       39.57134,     21.62664,     +29.57543,      21.65834,      +29.59152,  3128425.04, -2564755.61,  5022620.42,      51.336412,       -0.378299,   83977.22,  130393.20,    9843.88,             9897.09,  -296.00,  20203.91,           24684.59,     -2.88,    -69.71,         110.36,  +3.08,  +2.50

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.