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: 02PQ149
# Created Tue Dec 31 02:08:20 2024
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 86.99d
# First observation: 2002/08/11
# Last observation: 2002/11/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000001 0.036855 0.000001 -0.014940 0.029438 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 3.18 DOF: 7 RMS: 0.13
# Min/Max residuals: -0.26 0.16
# Exact a, adot, b, bdot, g, gdot:
1.598988E-05 2.807517E-02 -7.278885E-06 -1.515199E-02 2.806373E-02 -6.723015E-03
# Covariance matrix:
1.1932E-12 7.1463E-10 7.1086E-15 -8.0990E-12 1.5016E-10 2.3828E-09
7.1463E-10 1.6542E-06 -5.2638E-11 3.7691E-08 2.6211E-07 -1.0124E-05
7.1086E-15 -5.2638E-11 4.9885E-13 -5.1945E-12 -5.5173E-12 8.4445E-10
-8.0990E-12 3.7691E-08 -5.1945E-12 2.4161E-09 3.6667E-09 -6.5720E-07
1.5016E-10 2.6211E-07 -5.5173E-12 3.6667E-09 4.4984E-08 -9.6530E-07
2.3828E-09 -1.0124E-05 8.4445E-10 -6.5720E-07 -9.6530E-07 1.8014E-04
# lat0 lon0 xBary yBary zBary JD0
0.299850 -20.754560 0.364285 0.004957 -0.949760 2452497.840143
# Heliocentric elements and errors
Epoch: 2452490.5000 = 2002/08/04
Mean Anomaly: 331.77453 +/- 19.869
Argument of Peri: 233.72729 +/- 47.900
Long of Asc Node: 159.22143 +/- 0.020
Inclination: 28.45536 +/- 1.082
Eccentricity: 0.32509326 +/- 0.4286
Semi-Major Axis: 48.65832345 +/- 16.4201
Time of Perihelion: 2462210.6484 +/- 4755.2
Perihelion: 32.83983045 +/- 23.6156
Aphelion: 64.47681645 +/- 30.1381
Period (y) 339.4251 +/- 171.81
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 34.07934144 +/- 0.2518
Ecliptic Y -13.29842168 +/- 0.0954
Ecliptic Z 0.18620024 +/- 0.0014
Ecliptic XDOT 0.00035676 +/- 0.0012
Ecliptic YDOT 0.00278828 +/- 0.0005
Ecliptic ZDOT -0.00148141 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.58256692 +/- 0.2371
Geocenter to KBO 35.63318297 +/- 0.2693
# Hcoef: 7.11
The following table shows the complete astrometric record for 02PQ149. 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 (02PQ149) followed by the observatory code and reference code for the source of the astrometry.
2002 08 11.33940 22 42 51.46 -07 49 31.5 21.5R 02PQ149 807 Cg3357 2002 08 12.30468 22 42 47.05 -07 50 06.4 02PQ149 807 Cg3357 2002 08 12.38292 22 42 46.67 -07 50 09.3 02PQ149 807 Cg3357 2002 11 05.30179 22 37 09.01 -08 36 59.7 23.4R 02PQ149 568 Cl8391 2002 11 05.38405 22 37 08.91 -08 37 00.9 02PQ149 568 Cl8391 2002 11 06.32880 22 37 07.68 -08 37 17.1 02PQ149 568 Cl8391
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 -0.04 0.00 -0.26
2 0.0026 -73.84 0.13 -7.74 0.11
3 0.0029 -80.16 -0.09 -8.31 0.16
4 0.2354 -5781.61 -0.16 -741.33 -0.04
5 0.2356 -5783.43 0.16 -741.89 0.06
6 0.2382 -5806.41 -0.00 -750.15 -0.03
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.
02PQ149 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0