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: 385571 # Created Sun Dec 22 02:07:05 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 31 observations of 31 # Arc: 10.93y # First observation: 2002/10/31 # Last observation: 2013/10/06 # Chi-squared of fit: 140.75 DOF: 56 RMS: 0.38 # Min/Max residuals: -1.25 0.67 # Exact a, adot, b, bdot, g, gdot: 2.031811E-05 4.070063E-02 -1.174032E-06 8.194188E-04 3.481596E-02 -1.523949E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -0.846396 -1.565040 -0.623428 -0.011391 -0.769624 2452578.846643 # Heliocentric elements and errors Epoch: 2452578.5000 = 2002/10/31 Mean Anomaly: 319.65625 +/- 0.000 Argument of Peri: 7.39468 +/- 0.000 Long of Asc Node: 34.71878 +/- 0.000 Inclination: 1.43455 +/- 0.000 Eccentricity: 0.02787049 +/- 0.0000 Semi-Major Axis: 30.12761631 +/- 0.0000 Time of Perihelion: 2459347.4200 +/- 0.0 Perihelion: 29.28794484 +/- 0.0000 Aphelion: 30.96728779 +/- 0.0000 Period (y) 165.3695 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.49416611 +/- 0.0000 Ecliptic Y -0.17660314 +/- 0.0000 Ecliptic Z -0.42431391 +/- 0.0000 Ecliptic XDOT -0.00003889 +/- 0.0000 Ecliptic YDOT 0.00319930 +/- 0.0000 Ecliptic ZDOT 0.00006641 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 29.49775653 +/- 0.0000 Geocenter to KBO 28.72252828 +/- 0.0000 # Hcoef: 8.87
The following table shows the complete astrometric record for 385571. 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 (385571) followed by the observatory code and reference code for the source of the astrometry.
2002 10 31.34590 23 55 36.17 -01 23 56.6 23.3R 385571 568 C~4ewl 2002 10 31.35174 23 55 36.15 -01 23 56.6 385571 568 C~4ewl 2002 10 31.35548 23 55 36.13 -01 23 56.7 385571 568 C~4ewl 2002 10 31.36060 23 55 36.09 -01 23 56.8 385571 568 C~4ewl 2004 10 16.02931 00 13 53.82 +00 40 58.2 385571 304 Cn2616 2004 10 16.07349 00 13 53.56 +00 40 56.4 385571 304 Cn2616 2004 10 16.11233 00 13 53.35 +00 40 54.9 385571 304 Cn2616 2004 12 12.30201 00 10 39.61 +00 21 40.4 23.5R 385571 568 Cn2616 2004 12 13.31117 00 10 39.46 +00 21 41.7 23.3R 385571 568 Cn2616 2004 12 14.30574 00 10 39.44 +00 21 43.7 23.3R 385571 568 Cn2616 2005 09 24.35444 00 24 41.17 +01 53 51.9 385571 695 Co2671 2005 09 24.42294 00 24 40.72 +01 53 48.8 385571 695 Co2671 2005 09 25.45316 00 24 34.35 +01 53 08.2 385571 695 Co2671 2005 11 02.03388 00 20 55.57 +01 30 11.1 385571 304 Cq3841 2005 11 02.07218 00 20 55.42 +01 30 10.6 385571 304 Cq3841 2005 11 03.12634 00 20 50.33 +01 29 39.5 385571 304 Cq3841 2006 07 28.17648 00 37 35.64 +03 20 29.3 23.0R 385571 250 S~06Al 2006 07 28.19642 00 37 35.60 +03 20 29.1 385571 250 S~06Al 2006 07 28.20082 00 37 35.59 +03 20 29.0 385571 250 S~06Al 2006 07 28.24044 00 37 35.52 +03 20 28.5 385571 250 S~06Al 2006 09 16.45457 00 34 05.78 +02 57 47.8 23.5G 385571 568 C~4ewl 2006 09 16.47021 00 34 05.69 +02 57 47.0 23.2R 385571 568 C~4ewl 2006 09 16.48794 00 34 05.58 +02 57 46.4 385571 568 C~4ewl 2006 10 13.43293 00 31 19.66 +02 40 16.1 385571 568 C~4ewl 2006 10 13.47221 00 31 19.41 +02 40 14.5 23.5R 385571 568 C~4ewl 2006 10 13.51441 00 31 19.14 +02 40 13.0 385571 568 C~4ewl 2006 11 13.02120 00 28 37.662 +02 23 34.09 23.2R 385571 304 Cs8688 2006 11 13.03580 00 28 37.625 +02 23 33.79 385571 304 Cs8688 2013 10 05.39529 01 33 15.55 +09 27 22.3 23.1R 385571 695 C~0zdg 2013 10 05.45855 01 33 15.14 +09 27 19.8 385571 695 C~0zdg 2013 10 06.40358 01 33 09.23 +09 26 46.0 385571 695 C~0zdg
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 -0.47 0.00 0.14
2 0.0000 0.00 -0.37 0.00 0.30
3 0.0000 0.00 -0.42 0.00 0.30
4 0.0000 0.00 -0.66 0.00 0.34
5 1.9594 0.00 0.17 0.00 0.44
6 1.9596 0.00 0.16 0.00 0.24
7 1.9597 0.00 0.43 0.00 0.15
8 2.1162 0.00 0.67 0.00 0.46
9 2.1190 0.00 0.50 0.00 0.44
10 2.1217 0.00 0.28 0.00 0.29
11 2.8994 0.00 0.55 0.00 0.46
12 2.8996 0.00 0.26 0.00 0.06
13 2.9024 0.00 0.46 0.00 0.19
14 3.0053 0.00 -0.37 0.00 -1.25
15 3.0054 0.00 0.25 0.00 -0.60
16 3.0083 0.00 0.60 0.00 -0.25
17 3.7394 0.00 0.28 0.00 -0.24
18 3.7395 0.00 0.21 0.00 -0.20
19 3.7395 0.00 0.17 0.00 -0.25
20 3.7396 0.00 0.16 0.00 -0.28
21 3.8771 0.00 -0.18 0.00 -0.09
22 3.8771 0.00 -0.11 0.00 -0.30
23 3.8772 0.00 -0.15 0.00 -0.23
24 3.9510 0.00 -0.25 0.00 -0.34
25 3.9511 0.00 -0.35 0.00 -0.44
26 3.9512 0.00 -0.49 0.00 -0.33
27 4.0347 0.00 -0.54 0.00 0.14
28 4.0347 0.00 -0.16 0.00 0.21
29 10.9296 0.00 0.05 0.00 0.45
30 10.9298 0.00 -0.09 0.00 0.22
31 10.9324 0.00 -0.16 0.00 0.26
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.
385571 quality flag:3 Type: 1:1 1:1 1:1 axisobj 30.344 30.344 30.344 ecceobj 0.033 0.033 0.033 incobj 1.430 1.430 1.430 qmin 28.354 28.354 28.354 qmax 32.105 32.105 32.106 amean 30.110 30.110 30.110 amin 29.836 29.836 29.836 amax 30.444 30.443 30.444 emean 0.032 0.032 0.032 emin 0.006 0.006 0.006 emax 0.055 0.055 0.055 imean 1.974 1.974 1.974 imin 1.769 1.769 1.769 imax 2.160 2.160 2.160 excite_mean 0.047 0.047 0.047 fracstop 1.000 1.000 1.000 cjmean 2.997 2.997 2.997 libcent 0 62.7 62.7 62.7 libamp 0 19.0 19.0 19.0 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 175.8 175.8 175.9 kozaiamp 180.0 180.0 180.0