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: 02CO154
# Created Sun Dec 22 02:08:19 2024
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 37.02d
# First observation: 2002/02/06
# Last observation: 2002/03/15
Preliminary a, adot, b, bdot, g, gdot:
0.000001 0.030256 0.000001 0.001287 0.025103 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 29.03 DOF: 13 RMS: 0.32
# Min/Max residuals: -0.45 0.87
# Exact a, adot, b, bdot, g, gdot:
1.604369E-05 2.330980E-02 1.399677E-06 1.282442E-03 2.401305E-02 -4.748161E-03
# Covariance matrix:
1.4970E-12 1.5958E-09 -1.8710E-17 2.7759E-13 2.3815E-10 -1.7365E-08
1.5958E-09 2.5943E-06 1.9497E-13 2.7353E-10 3.8308E-07 -2.9599E-05
-1.8710E-17 1.9497E-13 4.8648E-13 -5.2181E-12 1.8072E-14 -7.7767E-12
2.7759E-13 2.7353E-10 -5.2181E-12 8.4991E-11 4.8780E-11 1.2251E-09
2.3815E-10 3.8308E-07 1.8072E-14 4.8780E-11 5.6703E-08 -4.3012E-06
-1.7365E-08 -2.9599E-05 -7.7767E-12 1.2251E-09 -4.3012E-06 3.7369E-04
# lat0 lon0 xBary yBary zBary JD0
0.240809 135.503142 -0.033982 0.004055 -0.982699 2452311.704643
# Heliocentric elements and errors
Epoch: 2452310.5000 = 2002/02/05
Mean Anomaly: 300.08607 +/- 65.678
Argument of Peri: 87.10369 +/- 8.917
Long of Asc Node: 131.26686 +/- 0.302
Inclination: 3.15265 +/- 0.222
Eccentricity: 0.20687897 +/- 0.8618
Semi-Major Axis: 45.68727349 +/- 21.4161
Time of Perihelion: 2471082.7607 +/- 15787.5
Perihelion: 36.23553754 +/- 42.8797
Aphelion: 55.13900944 +/- 47.0979
Period (y) 308.8169 +/- 217.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.42796316 +/- 0.2945
Ecliptic Y 29.85640080 +/- 0.2895
Ecliptic Z 0.17508502 +/- 0.0017
Ecliptic XDOT -0.00148460 +/- 0.0015
Ecliptic YDOT -0.00227622 +/- 0.0016
Ecliptic ZDOT 0.00014416 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.62975798 +/- 0.2920
Geocenter to KBO 41.64402009 +/- 0.4130
# Hcoef: 6.55
The following table shows the complete astrometric record for 02CO154. 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 (02CO154) followed by the observatory code and reference code for the source of the astrometry.
2002 02 06.20390 09 12 09.42 +16 25 05.0 23.0R 02CO154 695 Cf0336 2002 02 06.29277 09 12 08.99 +16 25 06.8 02CO154 695 Cf0336 2002 02 07.21956 09 12 04.53 +16 25 28.1 02CO154 695 Cf0336 2002 03 08.42300 09 09 52.53 +16 35 31.5 22.1R 02CO154 568 Cf2717 2002 03 08.48527 09 09 52.33 +16 35 32.2 02CO154 568 Cf2717 2002 03 13.29216 09 09 33.99 +16 36 55.2 02CO154 696 Cf5529 2002 03 13.37979 09 09 33.66 +16 36 56.6 02CO154 696 Cf5529 2002 03 15.16343 09 09 27.24 +16 37 26.1 22.4R 02CO154 662 Cf2717 2002 03 15.22242 09 09 27.04 +16 37 28.1 02CO154 662 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 -0.14 0.00 -0.11
2 0.0002 -6.44 0.01 -0.11 -0.27
3 0.0028 -74.04 0.14 1.26 0.42
4 0.0827 -2066.00 -0.45 19.05 0.13
5 0.0829 -2068.96 0.36 18.87 -0.04
6 0.0961 -2345.36 0.13 21.02 -0.38
7 0.0963 -2350.31 0.09 20.97 -0.43
8 0.1012 -2447.19 -0.01 22.17 -0.19
9 0.1014 -2450.53 -0.13 23.24 0.87
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.
02CO154 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