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: 02GW32 # Created Sat Nov 23 02:08:23 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 18 # Arc: 14.14y # First observation: 2002/04/08 # Last observation: 2016/05/29 # Chi-squared of fit: 48.38 DOF: 30 RMS: 0.29 # Min/Max residuals: -0.63 0.69 # Exact a, adot, b, bdot, g, gdot: 1.411226E-05 2.681533E-02 1.750536E-06 1.825113E-03 2.724442E-02 1.512249E-04 # Covariance matrix: 3.2630E-13 -6.8489E-14 -2.3485E-15 -3.5604E-15 2.0625E-13 -1.5397E-13 -6.8489E-14 5.9479E-14 -3.4086E-15 3.9746E-15 -5.2022E-15 1.4918E-13 -2.3485E-15 -3.4086E-15 1.1692E-13 -1.2063E-14 -7.3848E-15 -9.0853E-15 -3.5604E-15 3.9746E-15 -1.2063E-14 4.2075E-15 2.8243E-16 1.0666E-14 2.0625E-13 -5.2022E-15 -7.3848E-15 2.8243E-16 2.6618E-13 -1.6287E-14 -1.5397E-13 1.4918E-13 -9.0853E-15 1.0666E-14 -1.6287E-14 4.0059E-13 # lat0 lon0 xBary yBary zBary JD0 -5.197725 -135.425835 0.439362 -0.081820 -0.898781 2452372.875343 # Heliocentric elements and errors Epoch: 2452372.5000 = 2002/04/08 Mean Anomaly: 182.73809 +/- 0.024 Argument of Peri: 124.79759 +/- 0.016 Long of Asc Node: 276.57066 +/- 0.001 Inclination: 6.37033 +/- 0.000 Eccentricity: 0.07630464 +/- 0.0001 Semi-Major Axis: 34.93854356 +/- 0.0024 Time of Perihelion: 2489514.7784 +/- 6.4 Perihelion: 32.27257055 +/- 0.0030 Aphelion: 37.60451656 +/- 0.0033 Period (y) 206.5216 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -26.98902725 +/- 0.0005 Ecliptic Y -25.96993829 +/- 0.0005 Ecliptic Z -3.32513305 +/- 0.0001 Ecliptic XDOT 0.00186027 +/- 0.0000 Ecliptic YDOT -0.00194324 +/- 0.0000 Ecliptic ZDOT 0.00018150 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.60188748 +/- 0.0005 Geocenter to KBO 36.70479230 +/- 0.0007 # Hcoef: 7.26
The following table shows the complete astrometric record for 02GW32. 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 (02GW32) followed by the observatory code and reference code for the source of the astrometry.
2002 04 08.37460 14 41 52.58 -21 10 13.3 21.6R 02GW32 807 Cf5154 2002 04 09.23285 14 41 48.38 -21 09 57.2 02GW32 807 Cf5154 2002 04 09.29632 14 41 48.07 -21 09 56.1 02GW32 807 Cf5154 2002 07 09.98535 14 35 05.35 -20 33 49.1 22.0R 02GW32 304 Cf9900 2002 07 10.13104 14 35 05.12 -20 33 46.8 02GW32 304 Cf9900 2002 08 09.04278 14 35 06.77 -20 29 10.7 22.5R 02GW32 807 Cg3254 2002 08 10.04134 14 35 08.48 -20 29 09.3 02GW32 807 Cg3254 2002 08 11.04517 14 35 10.26 -20 29 08.0 02GW32 807 Cg3254 2002 08 12.04023 14 35 12.11 -20 29 07.3 02GW32 807 Cg3254 2003 04 29.46923 14 46 29.10 -21 24 25.4 23.2R 02GW32 568 Ci0084 2003 04 29.50998 14 46 28.89 -21 24 24.6 02GW32 568 Ci0084 2003 04 30.53881 14 46 23.21 -21 23 59.6 02GW32 568 Ci0084 2006 04 22.28204 15 06 39.31 -22 26 57.5 23.0R 02GW32 304 Cr0782 2006 04 22.33117 15 06 39.05 -22 26 56.8 02GW32 304 Cr0782 2006 06 21.15925 15 01 32.30 -22 03 52.1 23.5R 02GW32 304 Cr4819 2006 06 21.21560 15 01 32.08 -22 03 51.1 02GW32 304 Cr4819 2016 05 29.32908 16 10 19.031 -24 31 42.52 23.0R 02GW32 G37 C~2bkS 2016 05 29.37929 16 10 18.724 -24 31 41.67 02GW32 G37 C~2bkS
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 0.26 0.00 -0.23
2 0.0023 0.00 0.22 0.00 -0.27
3 0.0025 0.00 0.35 0.00 -0.38
4 0.2536 0.00 0.03 0.00 -0.07
5 0.2540 0.00 0.05 0.00 -0.11
6 0.3358 0.00 -0.11 0.00 0.17
7 0.3386 0.00 0.31 0.00 -0.25
8 0.3413 0.00 0.07 0.00 -0.28
9 0.3441 0.00 -0.45 0.00 -0.39
10 1.0571 0.00 -0.45 0.00 0.53
11 1.0572 0.00 -0.19 0.00 0.35
12 1.0600 0.00 -0.63 0.00 0.69
13 4.0381 0.00 0.18 0.00 0.22
14 4.0382 0.00 0.23 0.00 -0.04
15 4.2020 0.00 0.09 0.00 0.25
16 4.2022 0.00 0.10 0.00 -0.01
17 14.1409 0.00 0.05 0.00 -0.12
18 14.1410 0.00 -0.12 0.00 -0.11
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.
02GW32 quality flag:3 Type: 5:4E 5:4E 5:4E axisobj 34.837 34.837 34.837 ecceobj 0.080 0.080 0.080 incobj 6.363 6.363 6.363 qmin 31.876 31.876 31.825 qmax 38.421 38.367 38.389 amean 34.946 34.946 34.946 amin 34.586 34.586 34.586 amax 35.326 35.312 35.313 emean 0.066 0.066 0.066 emin 0.044 0.043 0.044 emax 0.089 0.089 0.089 imean 7.744 7.755 7.756 imin 6.390 6.446 6.418 imax 8.894 8.894 8.910 excite_mean 0.150 0.150 0.150 fracstop 1.000 1.000 1.000 cjmean 2.992 2.992 2.992 libcent 0 179.7 179.1 179.4 libamp 0 96.5 95.4 93.7 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 179.0 179.8 179.8 kozaiamp 180.0 180.0 180.0