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: 02GA32 # Created Sun Dec 22 02:08:22 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 19 observations of 19 # Arc: 6.99y # First observation: 2001/05/22 # Last observation: 2008/05/18 # Chi-squared of fit: 57.47 DOF: 32 RMS: 0.31 # Min/Max residuals: -0.78 0.92 # Exact a, adot, b, bdot, g, gdot: 1.486480E-05 2.430706E-02 3.920555E-06 6.562787E-03 2.453729E-02 -6.961259E-03 # Covariance matrix: 2.7084E-13 -1.7391E-13 2.4670E-14 -3.8330E-14 6.3466E-14 -7.4540E-13 -1.7391E-13 2.3739E-13 -3.9613E-14 6.1050E-14 2.8392E-14 1.1859E-12 2.4670E-14 -3.9613E-14 1.6249E-13 -3.8808E-14 -8.1978E-15 -2.0822E-13 -3.8330E-14 6.1050E-14 -3.8808E-14 2.7499E-14 1.1452E-14 3.2063E-13 6.3466E-14 2.8392E-14 -8.1978E-15 1.1452E-14 3.1616E-13 2.1917E-13 -7.4540E-13 1.1859E-12 -2.0822E-13 3.2063E-13 2.1917E-13 6.2275E-12 # lat0 lon0 xBary yBary zBary JD0 -0.613725 -117.459188 0.024969 -0.011038 -1.018385 2452051.705673 # Heliocentric elements and errors Epoch: 2452052.5000 = 2001/05/23 Mean Anomaly: 321.27255 +/- 0.009 Argument of Peri: 68.46275 +/- 0.016 Long of Asc Node: 244.71575 +/- 0.000 Inclination: 15.17654 +/- 0.000 Eccentricity: 0.32502674 +/- 0.0001 Semi-Major Axis: 51.70410390 +/- 0.0068 Time of Perihelion: 2466660.8894 +/- 24.1 Perihelion: 34.89888748 +/- 0.0070 Aphelion: 68.50932031 +/- 0.0104 Period (y) 371.7883 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -19.27918826 +/- 0.0004 Ecliptic Y -37.04794084 +/- 0.0008 Ecliptic Z -0.43637195 +/- 0.0000 Ecliptic XDOT 0.00275273 +/- 0.0000 Ecliptic YDOT -0.00056610 +/- 0.0000 Ecliptic ZDOT 0.00074074 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.76652554 +/- 0.0008 Geocenter to KBO 40.75452186 +/- 0.0009 # Hcoef: 7.22
The following table shows the complete astrometric record for 02GA32. 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 (02GA32) followed by the observatory code and reference code for the source of the astrometry.
2001 05 22.20493 16 01 22.48 -21 16 13.6 22.8R 02GA32 807 Ch1599 2001 05 22.28507 16 01 22.07 -21 16 12.3 02GA32 807 Ch1599 2001 08 19.03078 15 56 53.47 -20 57 06.2 21.9R 02GA32 807 Ch1599 2001 08 20.02800 15 56 54.02 -20 57 02.7 02GA32 807 Ch1599 2001 08 21.03566 15 56 54.72 -20 57 00.5 02GA32 807 Ch1599 2002 04 06.27987 16 10 52.90 -21 21 32.1 22.1R 02GA32 807 Cf5154 2002 04 07.28495 16 10 49.89 -21 21 20.7 02GA32 807 Cf5154 2002 04 07.38104 16 10 49.59 -21 21 19.7 02GA32 807 Cf5154 2002 06 17.27585 16 05 27.84 -21 02 40.6 23. R 02GA32 695 Cf8972 2002 06 17.29976 16 05 27.71 -21 02 39.5 02GA32 695 Cf8972 2002 06 17.31534 16 05 27.65 -21 02 39.6 02GA32 695 Cf8972 2002 06 18.28681 16 05 23.22 -21 02 24.9 23.5R 02GA32 695 Cf8972 2002 06 18.30184 16 05 23.10 -21 02 24.0 02GA32 695 Cf8972 2004 06 24.36031 16 17 29.26 -20 46 07.1 23.9R 02GA32 568 Ck9821 2004 06 24.40690 16 17 29.03 -20 46 06.4 02GA32 568 Ck9821 2008 05 18.88087 16 46 45.58 -20 12 56.2 24.1R 02GA32 250 S~06AU 2008 05 18.88712 16 46 45.55 -20 12 56.1 02GA32 250 S~06AU 2008 05 18.89337 16 46 45.52 -20 12 56.0 02GA32 250 S~06AU 2008 05 18.90032 16 46 45.48 -20 12 55.9 02GA32 250 S~06AU
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 0.19 0.00 0.03
2 0.0002 0.00 0.17 0.00 -0.11
3 0.2432 0.00 0.01 0.00 -0.20
4 0.2459 0.00 -0.17 0.00 0.47
5 0.2487 0.00 0.30 0.00 0.11
6 0.8736 0.00 -0.10 0.00 -0.39
7 0.8763 0.00 -0.05 0.00 -0.27
8 0.8766 0.00 -0.05 0.00 -0.36
9 1.0707 0.00 0.24 0.00 0.22
10 1.0708 0.00 -0.04 0.00 0.92
11 1.0708 0.00 0.15 0.00 0.56
12 1.0735 0.00 -0.02 0.00 -0.59
13 1.0735 0.00 -0.78 0.00 0.06
14 3.0915 0.00 0.32 0.00 -0.38
15 3.0916 0.00 0.03 0.00 -0.35
16 6.9916 0.00 0.01 0.00 -0.10
17 6.9916 0.00 0.03 0.00 -0.08
18 6.9916 0.00 0.05 0.00 -0.07
19 6.9916 0.00 -0.03 0.00 -0.07
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.
02GA32 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.795 51.795 51.795 ecceobj 0.327 0.327 0.327 incobj 15.172 15.172 15.172 qmin 34.372 33.897 34.034 qmax 71.460 71.451 71.706 amean 52.472 52.175 52.337 amin 51.740 51.473 51.663 amax 53.271 53.093 53.208 emean 0.324 0.329 0.329 emin 0.304 0.311 0.310 emax 0.343 0.347 0.350 imean 16.963 16.462 16.618 imin 16.052 15.425 15.662 imax 17.816 17.226 17.560 excite_mean 0.436 0.434 0.436 fracstop 1.000 1.000 1.000 cjmean 2.962 2.961 2.960 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 180.6 174.5 181.2 kozaiamp 179.9 180.0 180.0