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: 02GE32 # Created Fri Nov 22 02:08:19 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 20 # Arc: 16.11y # First observation: 2002/04/08 # Last observation: 2018/05/19 # Chi-squared of fit: 41.54 DOF: 30 RMS: 0.27 # Min/Max residuals: -0.68 0.82 # Exact a, adot, b, bdot, g, gdot: 1.507134E-05 2.359721E-02 5.712658E-06 6.619117E-03 2.559807E-02 -5.752969E-03 # Covariance matrix: 4.1269E-13 -4.9471E-14 3.0232E-14 -1.4338E-14 3.7772E-13 -8.8926E-14 -4.9471E-14 2.1520E-14 -1.2862E-14 5.9020E-15 1.3910E-14 3.3236E-14 3.0232E-14 -1.2862E-14 1.7740E-13 -1.4099E-14 4.4391E-15 -2.1792E-14 -1.4338E-14 5.9020E-15 -1.4099E-14 2.9009E-15 -3.1578E-15 1.0069E-14 3.7772E-13 1.3910E-14 4.4391E-15 -3.1578E-15 9.8200E-13 -3.7461E-14 -8.8926E-14 3.3236E-14 -2.1792E-14 1.0069E-14 -3.7461E-14 5.7916E-14 # lat0 lon0 xBary yBary zBary JD0 -0.895154 -159.305531 0.040797 -0.015710 -1.002733 2452372.622093 # Heliocentric elements and errors Epoch: 2452372.5000 = 2002/04/08 Mean Anomaly: 277.72247 +/- 0.047 Argument of Peri: 105.00345 +/- 0.027 Long of Asc Node: 203.73204 +/- 0.000 Inclination: 15.71796 +/- 0.000 Eccentricity: 0.22758462 +/- 0.0000 Semi-Major Axis: 39.24648016 +/- 0.0058 Time of Perihelion: 2472897.2676 +/- 19.3 Perihelion: 30.31458506 +/- 0.0045 Aphelion: 48.17837527 +/- 0.0071 Period (y) 245.8721 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.49205079 +/- 0.0014 Ecliptic Y -14.11470701 +/- 0.0005 Ecliptic Z -0.61010438 +/- 0.0000 Ecliptic XDOT 0.00144872 +/- 0.0000 Ecliptic YDOT -0.00214888 +/- 0.0000 Ecliptic ZDOT 0.00071770 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.06572149 +/- 0.0013 Geocenter to KBO 39.06560992 +/- 0.0015 # Hcoef: 7.80
The following table shows the complete astrometric record for 02GE32. 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 (02GE32) followed by the observatory code and reference code for the source of the astrometry.
2002 04 08.12135 13 15 06.02 -08 54 36.4 22.4R 02GE32 807 Cf5154 2002 04 08.17047 13 15 05.80 -08 54 34.5 02GE32 807 Cf5154 2002 04 09.21058 13 15 00.88 -08 54 00.9 02GE32 807 Cf5154 2004 07 15.06709 13 22 02.45 -08 39 32.2 22.9R 02GE32 807 Cl0718 2004 07 16.99059 13 22 04.15 -08 39 39.9 02GE32 807 Cl0718 2004 07 17.08946 13 22 04.26 -08 39 40.4 02GE32 807 Cl0718 2005 05 09.16897 13 29 56.76 -09 05 43.4 22.6R 02GE32 807 Cn5324 2005 05 10.16326 13 29 52.53 -09 05 14.3 02GE32 807 Cn5324 2005 05 10.24777 13 29 52.15 -09 05 11.8 02GE32 807 Cn5324 2005 05 11.05675 13 29 48.76 -09 04 48.7 02GE32 807 Cn5324 2006 04 27.11801 13 36 46.78 -09 20 43.7 22.1R 02GE32 807 Cr3565 2006 04 27.18995 13 36 46.43 -09 20 41.3 02GE32 807 Cr3565 2006 04 28.07173 13 36 42.25 -09 20 10.5 02GE32 807 Cr3565 2009 04 27.20331 13 54 55.49 -09 45 03.4 23.6R 02GE32 688 C~06fZ 2009 04 27.28524 13 54 55.18 -09 45 01.7 02GE32 688 C~06fZ 2018 05 19.161900 14 52 05.53 -10 28 23.1 24.4G 02GE32 705 C~2r9k 2018 05 19.229980 14 52 05.14 -10 28 21.1 24.1G 02GE32 705 C~2r9k 2018 05 19.269950 14 52 04.95 -10 28 20.1 23.6G 02GE32 705 C~2r9k 2023 06 15.192870 15 25 49.251 -10 32 12.26 23.8G 02GE32 G37 C~6r1w 2023 06 15.236300 15 25 49.034 -10 32 11.50 02GE32 G37 C~6r1w
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 -0.22 0.00 -0.27
2 0.0001 0.00 0.02 0.00 0.04
3 0.0030 0.00 0.19 0.00 -0.17
4 2.2695 0.00 ( 6.31) 0.00 ( 3.09)
5 2.2748 0.00 0.16 0.00 0.10
6 2.2751 0.00 0.14 0.00 -0.11
7 3.0857 0.00 -0.49 0.00 -0.08
8 3.0884 0.00 -0.06 0.00 0.16
9 3.0886 0.00 -0.27 0.00 0.21
10 3.0909 0.00 0.11 0.00 0.04
11 4.0520 0.00 0.16 0.00 0.05
12 4.0522 0.00 0.14 0.00 0.19
13 4.0546 0.00 ( 0.13) 0.00 ( 3.32)
14 7.0529 0.00 -0.68 0.00 0.46
15 7.0532 0.00 0.82 0.00 -0.38
16 16.1124 0.00 0.19 0.00 -0.31
17 16.1125 0.00 -0.30 0.00 -0.03
18 16.1127 0.00 -0.00 0.00 -0.04
19 21.1857 0.00 0.11 0.00 0.03
20 21.1858 0.00 -0.07 0.00 0.16
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.
02GE32 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.088 39.088 39.089 ecceobj 0.231 0.231 0.231 incobj 15.756 15.756 15.756 qmin 28.994 29.002 28.998 qmax 50.420 50.445 50.377 amean 39.455 39.455 39.455 amin 38.984 39.000 38.986 amax 40.000 39.973 40.004 emean 0.242 0.242 0.242 emin 0.220 0.220 0.220 emax 0.263 0.263 0.262 imean 15.755 15.755 15.754 imin 15.151 15.151 15.146 imax 16.190 16.190 16.190 excite_mean 0.364 0.364 0.364 fracstop 1.000 1.000 1.000 cjmean 2.901 2.901 2.901 libcent 0 179.7 179.9 179.8 libamp 0 90.1 89.9 91.0 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 89.2 89.2 89.2 kozaiamp 15.1 15.1 15.1