The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 02VF131 # Created Fri Apr 26 01:11:14 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 13 observations of 13 # Arc: 17.23y # First observation: 2002/11/07 # Last observation: 2020/01/30 # Chi-squared of fit: 17.87 DOF: 20 RMS: 0.21 # Min/Max residuals: -0.40 0.45 # Exact a, adot, b, bdot, g, gdot: 1.430421E-05 2.148120E-02 -9.023238E-07 6.542584E-05 2.291386E-02 -1.057612E-03 # Covariance matrix: 5.5465E-13 -3.0929E-13 3.4513E-15 -1.8570E-15 8.4099E-13 -9.5176E-13 -3.0929E-13 2.4451E-13 -2.6150E-15 1.4525E-15 -6.1193E-13 7.6835E-13 3.4513E-15 -2.6150E-15 1.8113E-13 -1.3235E-14 8.6499E-15 -8.5671E-15 -1.8570E-15 1.4525E-15 -1.3235E-14 2.4036E-15 -4.3214E-15 4.6951E-15 8.4099E-13 -6.1193E-13 8.6499E-15 -4.3214E-15 2.2924E-12 -2.0401E-12 -9.5176E-13 7.6835E-13 -8.5671E-15 4.6951E-15 -2.0401E-12 2.4512E-12 # lat0 lon0 xBary yBary zBary JD0 -1.835843 72.740342 0.467346 -0.027914 -0.870318 2452585.890203 # Heliocentric elements and errors Epoch: 2452586.5000 = 2002/11/08 Mean Anomaly: 272.08170 +/- 0.255 Argument of Peri: 9.99377 +/- 0.214 Long of Asc Node: 157.12467 +/- 0.004 Inclination: 1.80662 +/- 0.000 Eccentricity: 0.06161807 +/- 0.0001 Semi-Major Axis: 44.44964503 +/- 0.0130 Time of Perihelion: 2479021.3989 +/- 84.7 Perihelion: 41.71074367 +/- 0.0127 Aphelion: 47.18854640 +/- 0.0142 Period (y) 296.3539 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 13.64506066 +/- 0.0009 Ecliptic Y 42.35319472 +/- 0.0027 Ecliptic Z -1.39814434 +/- 0.0001 Ecliptic XDOT -0.00249593 +/- 0.0000 Ecliptic YDOT 0.00063772 +/- 0.0000 Ecliptic ZDOT 0.00001207 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.51897508 +/- 0.0026 Geocenter to KBO 43.64177815 +/- 0.0029 # Hcoef: 6.68
The following table shows the complete astrometric record for 02VF131. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (02VF131) followed by the observatory code and reference code for the source of the astrometry.
2002 11 07.38946 04 46 10.09 +20 30 15.5 22.5R 02VF131 695 Cg8319 2002 11 07.48765 04 46 09.66 +20 30 14.6 02VF131 695 Cg8319 2002 11 30.44556 04 44 21.73 +20 26 44.0 22.8R 02VF131 568 Cg8319 2002 11 30.49346 04 44 21.50 +20 26 43.4 02VF131 568 Cg8319 2002 12 01.44430 04 44 16.80 +20 26 34.8 02VF131 568 Cg8319 2004 11 10.40749 04 56 23.98 +20 47 44.0 23.2R 02VF131 695 Cm1727 2004 11 10.48309 04 56 23.61 +20 47 43.6 02VF131 695 Cm1727 2004 11 18.49385 04 55 47.24 +20 46 40.0 22.5R 02VF131 568 Cm1727 2004 11 18.54004 04 55 46.98 +20 46 39.7 02VF131 568 Cm1727 2014 10 22.40766 05 50 59.79 +21 42 04.5 22.3R 02VF131 G37 C~1BxD 2014 10 22.49927 05 50 59.57 +21 42 04.3 02VF131 G37 C~1BxD 2020 01 30.359033 06 11 13.040 +21 45 47.53 23.3G 02VF131 T12 C~3iF5 2020 01 30.396667 06 11 12.886 +21 45 47.56 23.2G 02VF131 T12 C~3iF5
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.09 0.00 0.21
2 0.0003 0.00 0.06 0.00 0.19
3 0.0631 0.00 -0.29 0.00 -0.24
4 0.0633 0.00 -0.11 0.00 -0.40
5 0.0659 0.00 0.11 0.00 -0.26
6 2.0096 0.00 0.20 0.00 -0.13
7 2.0098 0.00 -0.31 0.00 0.07
8 2.0318 0.00 0.45 0.00 0.24
9 2.0319 0.00 -0.14 0.00 0.31
10 11.9562 0.00 -0.00 0.00 0.08
11 11.9565 0.00 -0.16 0.00 0.10
12 17.2292 0.00 0.06 0.00 -0.06
13 17.2293 0.00 0.03 0.00 -0.12
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
02VF131 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.485 44.485 44.485 ecceobj 0.057 0.057 0.057 incobj 1.807 1.807 1.807 qmin 40.776 40.791 40.758 qmax 47.855 47.857 47.863 amean 44.220 44.220 44.219 amin 43.871 43.868 43.869 amax 44.581 44.581 44.581 emean 0.059 0.059 0.059 emin 0.043 0.044 0.044 emax 0.074 0.074 0.074 imean 1.963 1.963 1.963 imin 1.291 1.291 1.290 imax 2.613 2.613 2.613 excite_mean 0.068 0.068 0.068 fracstop 1.000 1.000 1.000 cjmean 3.099 3.099 3.099 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 181.0 180.9 180.9 kozaiamp 180.0 180.0 180.0