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: 02CP154
# Created Sun Dec 22 02:11:31 2024
# Orbit generated from Bernstein formalism
# Fitting 5 observations of 5
# Arc: 30.25d
# First observation: 2002/02/06
# Last observation: 2002/03/08
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.037984 -0.000000 0.000358 0.026085 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 0.99 DOF: 5 RMS: 0.08
# Min/Max residuals: -0.13 0.09
# Exact a, adot, b, bdot, g, gdot:
1.640509E-05 2.533824E-02 5.291708E-09 2.674564E-04 2.406179E-02 3.723871E-03
# Covariance matrix:
2.2273E-11 3.0829E-08 -4.9828E-14 2.2127E-10 5.0656E-09 -4.0418E-08
3.0829E-08 4.3716E-05 -7.0672E-11 3.1367E-07 7.1751E-06 -6.1167E-05
-4.9828E-14 -7.0672E-11 4.9435E-13 -6.5699E-12 -1.1596E-11 1.0094E-10
2.2127E-10 3.1367E-07 -6.5699E-12 2.4348E-09 5.1486E-08 -4.3686E-07
5.0656E-09 7.1751E-06 -1.1596E-11 5.1486E-08 1.1784E-06 -9.6129E-06
-4.0418E-08 -6.1167E-05 1.0094E-10 -4.3686E-07 -9.6129E-06 3.4422E-04
# lat0 lon0 xBary yBary zBary JD0
1.405258 135.591056 -0.032544 0.024025 -0.982463 2452311.708613
# Heliocentric elements and errors
Epoch: 2452310.5000 = 2002/02/05
Mean Anomaly: 24.09736 +/- 93.594
Argument of Peri: 24.27926 +/- 181.376
Long of Asc Node: 69.55384 +/- 2.549
Inclination: 1.50167 +/- 0.031
Eccentricity: 0.26875182 +/- 0.5075
Semi-Major Axis: 55.04425030 +/- 26.3475
Time of Perihelion: 2442325.8369 +/- 38112.0
Perihelion: 40.25100810 +/- 33.9343
Aphelion: 69.83749250 +/- 43.5637
Period (y) 408.3910 +/- 293.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.40384271 +/- 1.3389
Ecliptic Y 29.74320949 +/- 1.3117
Ecliptic Z 1.01920747 +/- 0.0460
Ecliptic XDOT -0.00232808 +/- 0.0013
Ecliptic YDOT -0.00176436 +/- 0.0018
Ecliptic ZDOT 0.00004103 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 42.54516361 +/- 1.3253
Geocenter to KBO 41.55966491 +/- 1.8749
# Hcoef: 6.13
The following table shows the complete astrometric record for 02CP154. 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 (02CP154) followed by the observatory code and reference code for the source of the astrometry.
2002 02 06.20787 09 13 57.22 +17 30 14.1 21.9R 02CP154 695 Cf0336 2002 02 06.30231 09 13 56.76 +17 30 16.2 02CP154 695 Cf0336 2002 02 07.25891 09 13 52.14 +17 30 36.7 02CP154 695 Cf0336 2002 03 08.38502 09 11 41.15 +17 40 04.7 22.2R 02CP154 568 Cf2717 2002 03 08.46280 09 11 40.83 +17 40 05.9 02CP154 568 Cf2717
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 0.05 0.00 0.04
2 0.0003 -6.91 0.06 0.04 0.09
3 0.0029 -76.10 -0.12 -0.07 -0.13
4 0.0826 -2033.35 0.05 -12.91 0.05
5 0.0828 -2038.07 -0.04 -13.11 -0.04
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.
02CP154 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0