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: 02GL32 # Created Sat Nov 23 02:08:22 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 15 observations of 15 # Arc: 10.99y # First observation: 2002/03/18 # Last observation: 2013/03/13 # Chi-squared of fit: 45.48 DOF: 24 RMS: 0.31 # Min/Max residuals: -0.61 0.65 # Exact a, adot, b, bdot, g, gdot: 1.602480E-05 3.355540E-02 -4.030530E-06 -4.109894E-03 2.977381E-02 1.223153E-04 # Covariance matrix: 4.6077E-13 -2.8441E-13 -1.1110E-14 2.9112E-14 7.3897E-13 -6.1617E-13 -2.8441E-13 3.8015E-13 1.7084E-14 -4.3376E-14 -3.8887E-13 9.1318E-13 -1.1110E-14 1.7084E-14 1.2533E-13 -1.5873E-14 -1.3656E-14 4.2194E-14 2.9112E-14 -4.3376E-14 -1.5873E-14 1.1842E-14 3.7621E-14 -1.0684E-13 7.3897E-13 -3.8887E-13 -1.3656E-14 3.7621E-14 1.8959E-12 -8.0274E-13 -6.1617E-13 9.1318E-13 4.2194E-14 -1.0684E-13 -8.0274E-13 2.2481E-12 # lat0 lon0 xBary yBary zBary JD0 -1.112069 -159.522327 0.380715 -0.017964 -0.920275 2452351.995953 # Heliocentric elements and errors Epoch: 2452352.5000 = 2002/03/19 Mean Anomaly: 358.08100 +/- 0.019 Argument of Peri: 191.31613 +/- 0.025 Long of Asc Node: 11.08079 +/- 0.000 Inclination: 7.07525 +/- 0.000 Eccentricity: 0.12562859 +/- 0.0002 Semi-Major Axis: 39.45986497 +/- 0.0098 Time of Perihelion: 2452835.1187 +/- 33.8 Perihelion: 34.50257795 +/- 0.0110 Aphelion: 44.41715198 +/- 0.0130 Period (y) 247.8801 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.45264935 +/- 0.0015 Ecliptic Y -11.70811032 +/- 0.0005 Ecliptic Z -0.65195053 +/- 0.0000 Ecliptic XDOT 0.00106739 +/- 0.0000 Ecliptic YDOT -0.00289311 +/- 0.0000 Ecliptic ZDOT -0.00037785 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.50622463 +/- 0.0014 Geocenter to KBO 33.58657574 +/- 0.0016 # Hcoef: 7.85
The following table shows the complete astrometric record for 02GL32. 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 (02GL32) followed by the observatory code and reference code for the source of the astrometry.
2002 03 18.49521 13 13 57.37 -09 01 45.5 23.4R 02GL32 695 Ch1599 2002 03 20.44437 13 13 47.54 -09 00 52.6 02GL32 695 Ch1599 2002 04 06.17214 13 12 18.78 -08 52 47.1 22.5R 02GL32 807 Cf5154 2002 04 06.30697 13 12 18.03 -08 52 43.3 02GL32 807 Cf5154 2002 04 07.19384 13 12 13.22 -08 52 16.1 02GL32 807 Cf5154 2002 04 10.47212 13 11 55.26 -08 50 35.5 22.0R 02GL32 568 Cf5154 2002 04 10.55017 13 11 54.82 -08 50 33.2 02GL32 568 Cf5154 2002 05 08.35609 13 09 30.69 -08 36 53.4 22.7R 02GL32 568 Cf7381 2002 05 08.45816 13 09 30.18 -08 36 50.5 02GL32 568 Cf7381 2003 04 01.36673 13 19 39.09 -09 51 52.4 23.0R 02GL32 695 Ck4262 2003 04 01.43720 13 19 38.69 -09 51 50.2 02GL32 695 Ck4262 2004 03 16.36037 13 27 52.34 -10 54 36.7 23.5R 02GL32 695 Ck4262 2004 03 16.45633 13 27 51.88 -10 54 34.5 02GL32 695 Ck4262 2013 03 13.41391 14 32 09.47 -18 41 25.6 02GL32 G37 C~0qSS 2013 03 13.46955 14 32 09.27 -18 41 26.2 02GL32 G37 C~0qSS
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 0.49 0.00 0.21
2 0.0053 0.00 -0.36 0.00 0.65
3 0.0511 0.00 -0.29 0.00 -0.31
4 0.0515 0.00 -0.30 0.00 -0.61
5 0.0539 0.00 0.16 0.00 -0.40
6 0.0629 0.00 0.14 0.00 0.19
7 0.0631 0.00 0.06 0.00 0.09
8 0.1392 0.00 0.09 0.00 -0.14
9 0.1395 0.00 -0.31 0.00 0.02
10 1.0373 0.00 0.39 0.00 0.11
11 1.0375 0.00 0.18 0.00 0.25
12 1.9955 0.00 -0.16 0.00 0.01
13 1.9958 0.00 -0.10 0.00 -0.07
14 10.9868 0.00 0.02 0.00 0.54
15 10.9869 0.00 -0.02 0.00 -0.56
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.
02GL32 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.229 39.229 39.229 ecceobj 0.121 0.121 0.121 incobj 7.095 7.095 7.095 qmin 33.675 33.675 33.675 qmax 45.612 45.611 45.613 amean 39.458 39.458 39.458 amin 39.070 39.069 39.071 amax 39.889 39.889 39.889 emean 0.126 0.126 0.126 emin 0.107 0.107 0.107 emax 0.146 0.146 0.146 imean 7.153 7.153 7.153 imin 6.479 6.479 6.479 imax 7.836 7.836 7.836 excite_mean 0.177 0.177 0.177 fracstop 1.000 1.000 1.000 cjmean 3.016 3.016 3.016 libcent 0 180.0 180.1 180.0 libamp 0 63.0 63.0 63.0 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 178.0 177.9 177.9 kozaiamp 180.0 180.0 180.0