Orbital Analysis for matched events on 20210816_024958.575_UK

Summary for Event
-----------------
shower ID 7 PER
Lg 66.18° Bg 38.35° Vg 62.04km/s
mass 0.02659g, abs. mag -0.9
Path Details
------------
start 0.40° 52.27° 107.24km
end   0.33° 52.24° 95.33km

Orbit Details
-------------
Semimajor axis -5.35A.U., eccentricity 1.18, inclination 115.06°, Period 1000000000.00Y, LA Sun 143.18°, 

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: 2459442.618039073423
Time: 2021-08-16 02:49:58.575944 UTC


Plane intersections
-------------------
Intersection 1 - Stations: UK002C and UK002F
 Convergence angle = 25.21205 deg
 R.A. =  53.48549  Dec = +58.13327 deg

Best intersection: Stations UK002C and UK002F with Qconv = 25.21 deg


Least squares solution
----------------------
State vector (ECI, epoch of date):
 X =   3941803.78 +/- 36.59 m
 Y =    527054.24 +/- 220.91 m
 Z =   5106170.43 +/- 184.71 m
 Vx =    19888.93 +/- 1156.32 m/s
 Vy =    25875.57 +/- 1630.78 m/s
 Vz =    53911.68 +/- 1983.02 m/s

State vector covariance matrix (X, Y, Z, Vx, Vy, Vz):
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
-1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00

Timing offsets (from input data):
    UK002C: 0.000000 s
    UK002F: 0.002330 s

Reference point on the trajectory:
  Time: 2021-08-16 02:49:58.575944 UTC
  Lon     = ++0.398386 +/- 0.0032 deg
  Lat     = +52.270483 +/- 0.0008 deg
  Lat geo = +52.087158 +/- 0.0008 deg
  Ht      =  107291.03 +/- 168.78 m

  JD dynamic   = 2459442.618839814328 
  LST apparent = 7.6157847195 deg
Radiant (apparent in ECI which includes Earth's rotation, epoch of date):
  R.A.      =  52.45278 +/- 1.4882 deg
  Dec       = +58.81087 +/- 0.4255 deg
  Azimuth   =  57.45274 +/- 0.6599 deg
  Elevation = +64.33090 +/- 0.8370 deg
  Vavg      =  61.20817 +/- 1.9012 km/s
  Vinit     =  63.02051 +/- 2.0281 km/s
Radiant (apparent ground-fixed, epoch of date):
  R.A.      =  52.81155 +/- 1.4882 deg
  Dec       = +58.65161 +/- 0.4255 deg
  Azimuth   =  57.77729 +/- 0.6599 deg
  Elevation = +64.13056 +/- 0.8370 deg
  Vavg      =  61.31464 +/- 1.9012 km/s
  Vinit     =  63.12697 +/- 2.0281 km/s
Radiant (geocentric, J2000):
  R.A.   =  52.41510 +/- 1.4733 deg
  Dec    = +58.72019 +/- 0.4283 deg
  Vg     =  62.03558 +/- 2.0580 km/s
  Vinf   =  63.02051 +/- 2.0281 km/s
  Zc     =  25.76816 +/- 0.8354 deg
  Zg     =  25.97460 +/- 0.8306 deg
Radiant (ecliptic geocentric, J2000):
  Lg     =  66.18259 +/- 0.8042 deg
  Bg     = +38.35057 +/- 0.6175 deg
  Vh     =  43.79504 +/- 1.7386 km/s
Radiant (ecliptic heliocentric, J2000):
  Lh     =  83.70689 +/- 0.8606 deg
  Bh     = +61.50973 +/- 1.8140 deg
  Vh_x   =  -2.28992 +/- 0.3583 km/s
  Vh_y   = -20.76477 +/- 2.1252 km/s
  Vh_z   = -38.49138 +/- 0.7620 km/s
Orbit:
  La Sun = 143.183647 +/- 0.0000 deg
  a      =  -5.347115 +/- 2.4763 AU
  e      =   1.179112 +/- 0.1670
  i      = 115.057315 +/- 1.6605 deg
  peri   = 154.125885 +/- 1.1166 deg
  node   = 143.183822 +/- 0.0001 deg
  Pi     = 297.309707 +/- 1.1166 deg
  q      =   0.957733 +/- 0.0057 AU
  f      =  25.870635 +/- 1.1166 deg
  M      =        nan +/- nan deg
  Q      = -11.651962 +/- 4.9549 AU
  n      =   0.079712 +/- 0.1627 deg/day
  T      = 1000000000.000000 +/- 0.0000 years
  Last perihelion JD = NaN 
  Tj     =  -1.509688 +/- 0.9860
Shower association:
  IAU No.  =    7
  IAU code =  PER

Orbit covariance matrix:
             e     ,     q (AU)   ,      Tp (JD) ,   node (rad) ,   peri (rad) ,    i (rad)
e   , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
q   , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
Tp  , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
node, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
peri, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00
i   , -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00, -1.000000e+00

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: UK002C
  Avg. res. = 3.615e-06 s
  Stddev    = 1.90e-03 s

Begin point on the trajectory:
  Lon =     0.398115 +/- 0.0030 deg
  Lat =    52.270377 +/- 0.0007 deg
  Ht  = 107244.59 +/- 129.78 m
End point on the trajectory:
  Lon =     0.327612 +/- 0.0037 deg
  Lat =    52.243079 +/- 0.0009 deg
  Ht  = 95332.38 +/- 221.82 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
    UK002C,   False,    -1.801980,    51.351940,  130.00,   0.025346,  52.068583,   107244.59,    98497.90,          0.019128,     68.24,     16.56,              31.43, 1.0000,    True,    True, {"ff_name": "FF_UK002C_20210816_024955_574_0605952.fits"}
    UK002F,   False,    -1.306160,    51.883100,   80.00,   0.000000,   0.000000,   106631.21,    95332.38,          0.016964,     36.77,     29.28,              22.44, 1.0000,    True,    True, {"ff_name": "FF_UK002F_20210816_024954_947_0602368.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,     UK002C,       0,  0.000000, 2459442.618039073423, 102.00712,  43.88166,               55.20591,  29.32024,        55.17838,       29.32041,    102.00712,     +43.88166,     102.03036,      +43.89886,  3941787.52,   527033.08,  5106126.35,      52.270377,       +0.398115,  107244.59,  213294.98,       0.00,               51.53,   -21.52,      0.00,           59926.25,     21.12,    -86.83,          86.42,  +3.97,  +2.33
  1,     UK002C,       0,  0.040328, 2459442.618039540015, 102.40416,  43.60344,               55.20073,  28.92067,        55.17300,       28.92083,    102.40416,     +43.60344,     102.42784,      +43.62075,  3940940.14,   525930.65,  5103829.43,      52.264844,       +0.383818,  104824.66,  211049.39,    2685.00,             2736.53,   222.95,  66579.12,           59926.25,     21.13,    -86.90,          87.40,  +1.84,  +0.22
  2,     UK002C,       0,  0.080608, 2459442.618040006608, 102.76678,  43.36700,               55.17903,  28.56744,        55.16800,       28.56751,    102.76678,     +43.36700,     102.77649,      +43.37387,  3940205.19,   524974.47,  5101837.25,      52.260040,       +0.371390,  102725.93,  209109.08,    5013.78,             5065.31,   106.03,  57814.79,           59926.25,      8.33,    -34.34,          34.86,  +1.14,  -0.46
  3,     UK002C,       0,  0.120884, 2459442.618040472735, 103.13766,  43.14374,               55.13952,  28.21874,        55.16304,       28.21857,    103.13766,     +43.14374,     103.11810,      +43.12906,  3939492.39,   524047.12,  5099905.11,      52.255377,       +0.359326,  100690.60,  207234.74,    7272.37,             7323.90,   -82.47,  56077.83,           59926.25,    -17.60,     72.88,          74.62,  +1.03,  -0.55
  4,     UK002C,       0,  0.161208, 2459442.618040939327, 103.47779,  42.85064,               55.17118,  27.83532,        55.15779,       27.83540,    103.47779,     +42.85064,     103.48993,      +42.85898,  3938724.43,   523047.99,  5097823.44,      52.250348,       +0.346336,   98497.90,  205224.75,    9705.76,             9757.29,  -101.66,  60345.86,           59555.07,     10.00,    -41.22,          42.63,  +1.14,  -0.42
  5,     UK002C,       1,  0.201424, 2459442.618041404523, 103.72154,  42.65614,               55.17984,  27.57111,        55.15354,       27.57127,    103.72154,     +42.65614,     103.74496,      +42.67251,  3938202.82,   522369.37,  5096409.53,      52.246929,       +0.337457,   97008.65,  203862.13,   11358.56,            11410.09,  -909.83,  41098.01,           56817.88,     19.58,    -80.61,          83.93,  +6.08,  +4.53
  0,     UK002F,       0,  0.010235, 2459442.618039166555,  81.86290,  42.30034,               69.08666,  39.81574,        69.11452,       39.82088,     81.86290,     +42.30034,      81.83940,      +42.28688,  3941572.74,   526753.65,  5105544.17,      52.268975,       +0.394501,  106631.21,  164464.19,       0.00,              732.08,    -9.51,      0.00,           60373.17,    -39.35,     49.41,          79.21,  +3.53,  +2.45
  1,     UK002F,       0,  0.050515, 2459442.618039632682,  82.13257,  42.00798,               69.21904,  39.47655,        69.22099,       39.47691,     82.13257,     +42.00798,      82.13112,      +42.00704,  3940806.89,   525757.28,  5103468.23,      52.263973,       +0.381562,  104444.13,  162252.12,    2426.68,             3158.76,     7.37,  60245.30,           60373.17,     -2.73,      3.43,           5.57,  +1.29,  +0.24
  2,     UK002F,       0,  0.090835, 2459442.618040099274,  82.46942,  41.70578,               69.31685,  39.09113,        69.33800,       39.09504,     82.46942,     +41.70578,      82.45181,      +41.69555,  3939981.09,   524682.92,  5101229.79,      52.258574,       +0.367617,  102086.02,  159874.66,    5043.33,             5775.41,   215.47,  64896.99,           60373.17,    -29.34,     36.82,          60.74,  +0.89,  -0.13
  3,     UK002F,       0,  0.131099, 2459442.618040565401,  82.71683,  41.42256,               69.44676,  38.76823,        69.43747,       38.76651,     82.71683,     +41.42256,      82.72530,      +41.42705,  3939289.07,   523782.60,  5099353.98,      52.254046,       +0.355899,  100110.06,  157886.90,    7236.08,             7968.16,   -14.08,  54459.35,           60373.17,     12.80,    -16.04,          26.81,  +0.73,  -0.26
  4,     UK002F,       0,  0.171423, 2459442.618041031994,  83.06356,  41.13584,               69.51595,  38.38459,        69.55016,       38.39090,     83.06356,     +41.13584,      83.03503,      +41.11929,  3938519.42,   522781.28,  5097267.74,      52.249004,       +0.342879,   97912.59,  155683.72,    9674.80,            10406.88,     4.25,  60478.23,           59954.04,    -46.61,     58.56,          99.16,  +1.28,  +0.32
  5,     UK002F,       0,  0.211787, 2459442.618041499052,  83.39298,  40.73795,               69.70004,  37.93817,        69.68537,       37.93546,     83.39298,     +40.73795,      83.40644,      +40.74503,  3937615.65,   521605.46,  5094817.93,      52.243079,       +0.327612,   95332.38,  153107.37,   12538.53,            13270.61,   455.36,  70947.59,           61407.62,     19.81,    -24.82,          42.78,  +3.90,  +2.98

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.