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: 02CA225
# Created Sun Dec 22 02:08:20 2024
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 34.00d
# First observation: 2002/02/07
# Last observation: 2002/03/13
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.036826 -0.000001 -0.002169 0.027080 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 2.70 DOF: 7 RMS: 0.12
# Min/Max residuals: -0.19 0.21
# Exact a, adot, b, bdot, g, gdot:
1.602107E-05 2.479902E-02 -1.808037E-06 -2.192362E-03 2.518752E-02 3.108389E-03
# Covariance matrix:
3.1701E-11 5.7820E-08 -4.6795E-13 1.5103E-10 8.7097E-09 -3.1564E-07
5.7820E-08 1.0742E-04 -8.7060E-10 2.8167E-07 1.6169E-05 -5.9201E-04
-4.6795E-13 -8.7060E-10 5.0789E-13 -8.2201E-12 -1.3099E-10 4.8281E-09
1.5103E-10 2.8167E-07 -8.2201E-12 8.8126E-10 4.2350E-08 -1.5780E-06
8.7097E-09 1.6169E-05 -1.3099E-10 4.2350E-08 2.4342E-06 -8.8866E-05
-3.1564E-07 -5.9201E-04 4.8281E-09 -1.5780E-06 -8.8866E-05 3.3937E-03
# lat0 lon0 xBary yBary zBary JD0
0.779554 147.296267 0.148561 0.013148 -0.972209 2452312.811233
# Heliocentric elements and errors
Epoch: 2452310.5000 = 2002/02/05
Mean Anomaly: 70.61981 +/- 121.703
Argument of Peri: 86.62688 +/- 21.010
Long of Asc Node: 335.65522 +/- 3.461
Inclination: 5.08933 +/- 2.043
Eccentricity: 0.12526897 +/- 2.2693
Semi-Major Axis: 41.79751812 +/- 4.9176
Time of Perihelion: 2432948.5894 +/- 33191.9
Perihelion: 36.56158617 +/- 94.9505
Aphelion: 47.03345006 +/- 95.0143
Period (y) 270.2302 +/- 47.69
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -34.14236076 +/- 2.0691
Ecliptic Y 22.10429631 +/- 1.3288
Ecliptic Z 0.54009748 +/- 0.0335
Ecliptic XDOT -0.00175195 +/- 0.0048
Ecliptic YDOT -0.00208470 +/- 0.0042
Ecliptic ZDOT -0.00023347 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 40.67668152 +/- 1.8809
Geocenter to KBO 39.70219883 +/- 2.4593
# Hcoef: 7.18
The following table shows the complete astrometric record for 02CA225. 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 (02CA225) followed by the observatory code and reference code for the source of the astrometry.
2002 02 07.31049 09 59 05.31 +13 08 34.3 23.1R 02CA225 695 Cf0409 2002 02 08.22033 09 59 00.89 +13 08 56.7 02CA225 695 Cf0409 2002 02 08.31382 09 59 00.42 +13 08 59.3 02CA225 695 Cf0409 2002 03 09.30762 09 56 40.07 +13 20 44.4 22.7R 02CA225 568 Cf2752 2002 03 09.36872 09 56 39.77 +13 20 45.7 02CA225 568 Cf2752 2002 03 13.31383 09 56 22.19 +13 22 12.1 02CA225 696 Cf5586
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 -0.09 0.00 0.09
2 0.0025 -68.33 0.14 -1.15 -0.13
3 0.0027 -75.67 -0.04 -1.07 0.07
4 0.0821 -2242.53 0.10 -40.60 -0.04
5 0.0823 -2247.09 -0.12 -40.87 -0.19
6 0.0931 -2517.78 0.02 -47.23 0.21
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.
02CA225 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