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: 02CZ154
# Created Sun Dec 22 02:08:20 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 21 observations of 21
# Arc: 19.26y
# First observation: 2002/02/06
# Last observation: 2021/05/12
# Chi-squared of fit: 25.78 DOF: 36 RMS: 0.20
# Min/Max residuals: -0.42 0.39
# Exact a, adot, b, bdot, g, gdot:
1.721808E-05 2.489059E-02 1.852082E-06 4.283601E-03 2.497359E-02 4.713102E-05
# Covariance matrix:
2.2361E-13 -3.2208E-14 6.2246E-15 -4.7123E-15 1.3059E-13 -6.5607E-14
-3.2208E-14 1.5601E-14 -3.8655E-15 2.5860E-15 -7.5999E-16 3.4230E-14
6.2246E-15 -3.8655E-15 1.4519E-13 -1.1449E-14 1.1682E-15 -9.4699E-15
-4.7123E-15 2.5860E-15 -1.1449E-14 1.9652E-15 -2.2960E-15 6.4941E-15
1.3059E-13 -7.5999E-16 1.1682E-15 -2.2960E-15 3.5775E-13 -3.9321E-14
-6.5607E-14 3.4230E-14 -9.4699E-15 6.4941E-15 -3.9321E-14 8.6895E-14
# lat0 lon0 xBary yBary zBary JD0
2.431807 167.130460 0.483006 0.036254 -0.855787 2452311.926883
# Heliocentric elements and errors
Epoch: 2452312.5000 = 2002/02/07
Mean Anomaly: 353.83958 +/- 0.014
Argument of Peri: 20.73995 +/- 0.016
Long of Asc Node: 152.89887 +/- 0.000
Inclination: 10.06478 +/- 0.000
Eccentricity: 0.06202791 +/- 0.0001
Semi-Major Axis: 43.58691678 +/- 0.0046
Time of Perihelion: 2454111.1239 +/- 16.8
Perihelion: 40.88331151 +/- 0.0054
Aphelion: 46.29052206 +/- 0.0059
Period (y) 287.7680 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.72765628 +/- 0.0009
Ecliptic Y 9.57722204 +/- 0.0002
Ecliptic Z 1.69909645 +/- 0.0000
Ecliptic XDOT -0.00060189 +/- 0.0000
Ecliptic YDOT -0.00266418 +/- 0.0000
Ecliptic ZDOT 0.00046962 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.90106546 +/- 0.0009
Geocenter to KBO 40.04233469 +/- 0.0010
# Hcoef: 7.52
The following table shows the complete astrometric record for 02CZ154. 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 (02CZ154) followed by the observatory code and reference code for the source of the astrometry.
2002 02 06.42614 11 16 27.71 +07 19 19.5 22.9R 02CZ154 695 Cf0336 2002 02 06.51965 11 16 27.37 +07 19 22.3 02CZ154 695 Cf0336 2002 02 07.52844 11 16 23.50 +07 19 51.4 02CZ154 695 Cf0336 2002 03 13.32916 11 13 54.92 +07 37 26.3 02CZ154 696 Cf5529 2002 03 20.23066 11 13 23.52 +07 40 57.6 22.7R 02CZ154 695 Cf5529 2002 03 20.35602 11 13 22.96 +07 41 01.7 02CZ154 695 Cf5529 2004 02 26.37420 11 26 30.25 +06 48 47.6 23.4R 02CZ154 695 Ck0860 2004 02 26.45335 11 26 29.89 +06 48 50.3 02CZ154 695 Ck0860 2004 02 27.36964 11 26 25.83 +06 49 19.2 02CZ154 695 Ck0860 2004 03 16.22871 11 25 04.52 +06 58 50.2 23.6R 02CZ154 695 Ck4262 2004 03 16.28462 11 25 04.26 +06 58 51.8 02CZ154 695 Ck4262 2013 03 12.27912 12 16 22.41 +03 44 23.8 23.2R 02CZ154 695 C~0ucs 2013 03 12.33289 12 16 22.16 +03 44 25.2 02CZ154 695 C~0ucs 2013 03 13.30200 12 16 17.89 +03 44 57.3 02CZ154 695 C~0ucs 2013 05 14.17025 12 12 11.48 +04 11 11.3 23.7R 02CZ154 G37 C~0snX 2013 05 14.24821 12 12 11.27 +04 11 12.2 02CZ154 G37 C~0snX 2015 02 18.31502 12 29 05.49 +02 48 03.1 23.3R 02CZ154 695 C~1M63 2015 02 18.40867 12 29 05.21 +02 48 05.9 02CZ154 695 C~1M63 2015 02 18.49728 12 29 04.90 +02 48 08.6 02CZ154 695 C~1M63 2021 05 12.183880 12 56 57.055 +01 12 22.10 23.7G 02CZ154 G37 C~4pRK 2021 05 12.235820 12 56 56.863 +01 12 23.14 02CZ154 G37 C~4pRK
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 -0.21 0.00 0.28
2 0.0003 0.00 0.15 0.00 0.39
3 0.0030 0.00 0.33 0.00 0.25
4 0.0956 0.00 0.37 0.00 -0.14
5 0.1145 0.00 -0.21 0.00 -0.24
6 0.1148 0.00 -0.03 0.00 0.10
7 2.0532 0.00 -0.09 0.00 -0.10
8 2.0535 0.00 -0.15 0.00 0.07
9 2.0560 0.00 -0.13 0.00 -0.42
10 2.1049 0.00 -0.11 0.00 -0.04
11 2.1050 0.00 -0.11 0.00 -0.19
12 11.0934 0.00 0.12 0.00 -0.05
13 11.0935 0.00 -0.01 0.00 -0.41
14 11.0962 0.00 0.17 0.00 -0.04
15 11.2656 0.00 -0.05 0.00 0.08
16 11.2658 0.00 -0.11 0.00 0.00
17 13.0319 0.00 -0.32 0.00 0.12
18 13.0321 0.00 0.25 0.00 0.16
19 13.0324 0.00 0.13 0.00 0.26
20 19.2601 0.00 0.03 0.00 -0.10
21 19.2603 0.00 -0.07 0.00 0.05
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.
02CZ154 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.286 43.286 43.286 ecceobj 0.056 0.056 0.056 incobj 10.093 10.093 10.093 qmin 40.227 40.226 40.229 qmax 46.969 46.966 46.972 amean 43.497 43.497 43.497 amin 43.159 43.160 43.158 amax 43.855 43.853 43.855 emean 0.057 0.057 0.057 emin 0.044 0.044 0.044 emax 0.071 0.071 0.071 imean 9.360 9.360 9.360 imin 8.810 8.810 8.811 imax 10.045 10.045 10.045 excite_mean 0.172 0.172 0.172 fracstop 1.000 1.000 1.000 cjmean 3.060 3.060 3.060 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 177.9 177.9 178.0 kozaiamp 180.0 180.0 180.0