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: 02CB249
# Created Sun Dec 22 02:08:21 2024
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 68.66d
# First observation: 2002/02/07
# Last observation: 2002/04/17
Preliminary a, adot, b, bdot, g, gdot:
-0.000030 0.211087 -0.000086 -0.036612 0.086278 0.000000
# Chi-squared of fit: 43.16 DOF: 24 RMS: 0.30
# Min/Max residuals: -0.84 0.54
# Exact a, adot, b, bdot, g, gdot:
3.181866E-05 1.325568E-01 -4.078031E-06 -3.763089E-02 7.312689E-02 -4.499335E-02
# Covariance matrix:
5.1448E-13 1.1672E-11 1.4619E-15 -3.9869E-13 3.1034E-12 6.7157E-11
1.1672E-11 1.0780E-07 -1.2601E-10 2.7674E-09 1.6276E-08 -2.2575E-07
1.4619E-15 -1.2601E-10 5.1320E-13 -5.5697E-12 -1.8910E-11 2.7540E-10
-3.9869E-13 2.7674E-09 -5.5697E-12 9.3806E-11 4.1281E-10 -6.2849E-09
3.1034E-12 1.6276E-08 -1.8910E-11 4.1281E-10 2.4646E-09 -3.3442E-08
6.7157E-11 -2.2575E-07 2.7540E-10 -6.2849E-09 -3.3442E-08 5.3509E-07
# lat0 lon0 xBary yBary zBary JD0
3.040008 163.729885 0.414399 0.047211 -0.890806 2452313.010133
# Heliocentric elements and errors
Epoch: 2452310.5000 = 2002/02/05
Mean Anomaly: 343.56503 +/- 0.327
Argument of Peri: 227.47223 +/- 0.161
Long of Asc Node: 351.94158 +/- 0.023
Inclination: 16.21757 +/- 0.038
Eccentricity: 0.54046567 +/- 0.0075
Semi-Major Axis: 26.52415219 +/- 0.3469
Time of Perihelion: 2454588.3602 +/- 7.6
Perihelion: 12.18875862 +/- 0.2549
Aphelion: 40.85954576 +/- 0.5702
Period (y) 136.6062 +/- 2.68
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -13.84786453 +/- 0.0089
Ecliptic Y 4.47872316 +/- 0.0026
Ecliptic Z 0.72519019 +/- 0.0005
Ecliptic XDOT 0.00014414 +/- 0.0000
Ecliptic YDOT -0.00521518 +/- 0.0000
Ecliptic ZDOT -0.00149603 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 14.57217259 +/- 0.0085
Geocenter to KBO 13.67485944 +/- 0.0093
# Hcoef: 9.90
The following table shows the complete astrometric record for 02CB249. 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 (02CB249) followed by the observatory code and reference code for the source of the astrometry.
2002 02 07.50939 11 04 46.17 +09 12 13.1 20.9R 02CB249 695 Cf2784 2002 02 08.38018 11 04 37.11 +09 12 56.6 02CB249 695 Cf2784 2002 02 08.51254 11 04 35.67 +09 13 03.0 02CB249 695 Cf2784 2002 03 13.26795 10 58 05.54 +09 41 37.4 21.3R 02CB249 688 Cf2784 2002 03 13.31808 10 58 04.91 +09 41 39.7 02CB249 688 Cf2784 2002 03 13.36517 10 58 04.32 +09 41 42.1 02CB249 688 Cf2784 2002 03 14.29655 10 57 53.01 +09 42 28.3 20.3R 02CB249 688 Cf2784 2002 03 14.31824 10 57 52.73 +09 42 29.6 02CB249 688 Cf2784 2002 04 17.136921 10 52 06.30 +10 01 18.3 21.4R 02CB249 809 C~4q2z 2002 04 17.142497 10 52 06.27 +10 01 18.4 21.2I 02CB249 809 C~4q2z 2002 04 17.148157 10 52 06.23 +10 01 18.5 21.6V 02CB249 809 C~4q2z 2002 04 17.151997 10 52 06.18 +10 01 18.6 21.5R 02CB249 809 C~4q2z 2002 04 17.157818 10 52 06.13 +10 01 18.6 21.0I 02CB249 809 C~4q2z 2002 04 17.163479 10 52 06.09 +10 01 18.7 21.7V 02CB249 809 C~4q2z 2002 04 17.167318 10 52 06.06 +10 01 18.8 21.5R 02CB249 809 C~4q2z
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 -0.65 0.00 -0.84
2 0.0024 -140.53 0.36 -11.77 0.54
3 0.0027 -162.67 0.30 -14.11 0.42
4 0.0924 -6152.31 0.25 -651.73 -0.15
5 0.0926 -6161.80 0.21 -653.17 -0.35
6 0.0927 -6170.79 0.09 -654.29 -0.31
7 0.0952 -6343.13 -0.15 -675.55 0.22
8 0.0953 -6347.46 -0.41 -675.94 0.38
9 0.1879 -11521.79 0.01 -1580.53 -0.04
10 0.1879 -11522.24 0.18 -1580.61 0.06
11 0.1879 -11522.83 0.22 -1580.74 0.10
12 0.1879 -11523.55 -0.08 -1580.93 0.03
13 0.1879 -11524.24 -0.12 -1581.21 -0.07
14 0.1880 -11524.83 -0.08 -1581.34 -0.03
15 0.1880 -11525.27 -0.11 -1581.41 0.02
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.
02CB249 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 26.324 27.409 25.349 ecceobj 0.538 0.560 0.515 incobj 16.244 16.131 16.357 qmin 12.099 11.816 11.849 qmax 42.442 43.338 39.120 amean 26.887 27.368 25.308 amin 26.324 26.749 24.931 amax 27.312 27.709 25.601 emean 0.543 0.560 0.523 emin 0.531 0.553 0.510 emax 0.554 0.567 0.530 imean 16.844 16.792 16.923 imin 16.574 16.491 16.719 imax 17.026 17.217 17.164 excite_mean 0.616 0.630 0.598 fracstop 0.004 0.003 0.004 cjmean 2.634 2.608 2.681 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 248.5 247.9 241.2 kozaiamp 22.6 20.5 16.2