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: 02PG153
# Created Sat Feb 22 02:08:25 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 5 observations of 5
# Arc: 2.33d
# First observation: 2002/08/13
# Last observation: 2002/08/15
# Chi-squared of fit: 28.41 DOF: 4 RMS: 0.42
# Min/Max residuals: -0.74 0.76
# Exact a, adot, b, bdot, g, gdot:
1.354662E-05 2.395636E-02 2.850673E-07 3.956824E-04 2.459594E-02 2.457214E-03
# Covariance matrix:
5.4053E-11 6.1176E-07 -3.1785E-14 1.0647E-09 1.0087E-07 4.0927E-10
6.1176E-07 7.0260E-03 -3.6496E-10 1.2225E-05 1.1582E-03 -1.7281E-05
-3.1785E-14 -3.6496E-10 7.6393E-13 -1.3171E-10 -6.0165E-11 -7.3524E-12
1.0647E-09 1.2225E-05 -1.3171E-10 5.7855E-08 2.0153E-06 -3.7620E-09
1.0087E-07 1.1582E-03 -6.0165E-11 2.0153E-06 1.9094E-04 -1.4571E-06
4.0927E-10 -1.7281E-05 -7.3524E-12 -3.7620E-09 -1.4571E-06 1.0925E-02
# lat0 lon0 xBary yBary zBary JD0
0.511129 -50.511417 -0.183125 0.008893 -1.000171 2452499.518433
# Heliocentric elements and errors
Epoch: 2452500.5000 = 2002/08/14
Mean Anomaly: 80.79630 +/- 159.138
Argument of Peri: 294.68877 +/- 8.753
Long of Asc Node: 282.12699 +/- 1.745
Inclination: 1.07611 +/- 0.006
Eccentricity: 0.10585779 +/- 0.2060
Semi-Major Axis: 41.89726069 +/- 0.0347
Time of Perihelion: 2430269.1500 +/- 43787.3
Perihelion: 37.46210942 +/- 8.6302
Aphelion: 46.33241197 +/- 8.6302
Period (y) 271.1981 +/- 0.34
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 26.63132449 +/- 0.2514
Ecliptic Y -32.02578865 +/- 0.3051
Ecliptic Z 0.36270031 +/- 0.0035
Ecliptic XDOT 0.00222393 +/- 0.0010
Ecliptic YDOT 0.00148237 +/- 0.0012
Ecliptic ZDOT 0.00004669 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.65338671 +/- 0.2831
Geocenter to KBO 40.65707425 +/- 0.3954
# Hcoef: 9.08
The following table shows the complete astrometric record for 02PG153. 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 (02PG153) followed by the observatory code and reference code for the source of the astrometry.
2002 08 13.01769 20 47 08.41 -17 23 05.4 02PG153 807 Cg3360 2002 08 13.17629 20 47 07.58 -17 23 08.6 02PG153 807 Cg3360 2002 08 15.04597 20 46 58.77 -17 23 43.3 02PG153 807 Cg3360 2002 08 15.20558 20 46 57.96 -17 23 46.4 24.9R 02PG153 807 Cg3360 2002 08 15.34750 20 46 57.22 -17 23 49.0 02PG153 807 Cg3360
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 0.39 0.00 0.10
2 0.0004 0.00 -0.51 0.00 -0.11
3 0.0056 0.00 0.76 0.00 0.09
4 0.0060 0.00 0.15 0.00 -0.03
5 0.0064 0.00 -0.74 0.00 -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.
02PG153 quality flag:2 Type: 5:3EE SCATNEAR 5:3EE axisobj 42.134 42.134 42.134 ecceobj 0.104 0.104 0.104 incobj 1.072 1.072 1.072 qmin 36.792 36.137 36.130 qmax 48.464 49.069 49.267 amean 42.326 42.326 42.326 amin 41.847 41.835 41.822 amax 42.855 42.853 42.885 emean 0.106 0.115 0.118 emin 0.079 0.079 0.079 emax 0.131 0.147 0.149 imean 4.575 4.687 4.725 imin 2.028 0.804 1.613 imax 6.463 6.637 6.462 excite_mean 0.134 0.143 0.145 fracstop 1.000 1.000 1.000 cjmean 3.060 3.056 3.055 libcent 0 178.3 -180.0 177.3 libamp 0 175.9 -180.0 172.1 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 177.8 183.6 179.6 kozaiamp 180.0 180.0 180.0