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: 02CY154
# Created Thu Nov 21 02:08:18 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 25 observations of 25
# Arc: 19.12y
# First observation: 2002/02/06
# Last observation: 2021/03/20
# Chi-squared of fit: 42.40 DOF: 44 RMS: 0.23
# Min/Max residuals: -0.66 0.62
# Exact a, adot, b, bdot, g, gdot:
1.499827E-05 1.874162E-02 6.487828E-07 2.278447E-04 2.139818E-02 5.749705E-04
# Covariance matrix:
3.7629E-13 -2.9486E-14 4.5960E-16 -2.6638E-16 3.0271E-13 -5.6075E-14
-2.9486E-14 1.4680E-14 -2.1810E-16 1.7340E-16 -1.9331E-15 4.3839E-14
4.5960E-16 -2.1810E-16 1.5273E-13 -1.0587E-14 2.6644E-16 -7.0332E-16
-2.6638E-16 1.7340E-16 -1.0587E-14 1.1662E-15 -6.1128E-17 5.6180E-16
3.0271E-13 -1.9331E-15 2.6644E-16 -6.1128E-17 4.5684E-13 1.6958E-15
-5.6075E-14 4.3839E-14 -7.0332E-16 5.6180E-16 1.6958E-15 1.4233E-13
# lat0 lon0 xBary yBary zBary JD0
0.692534 165.558022 0.459625 0.010419 -0.869259 2452311.907233
# Heliocentric elements and errors
Epoch: 2452312.5000 = 2002/02/07
Mean Anomaly: 159.96959 +/- 0.040
Argument of Peri: 241.25898 +/- 0.027
Long of Asc Node: 121.05391 +/- 0.005
Inclination: 0.97969 +/- 0.000
Eccentricity: 0.07555690 +/- 0.0001
Semi-Major Axis: 44.42432455 +/- 0.0050
Time of Perihelion: 2404254.6206 +/- 14.5
Perihelion: 41.06776030 +/- 0.0060
Aphelion: 47.78088879 +/- 0.0066
Period (y) 296.1007 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -45.97907563 +/- 0.0014
Ecliptic Y 12.32112276 +/- 0.0004
Ecliptic Z 0.56489157 +/- 0.0000
Ecliptic XDOT -0.00067744 +/- 0.0000
Ecliptic YDOT -0.00230460 +/- 0.0000
Ecliptic ZDOT 0.00003025 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.60465390 +/- 0.0014
Geocenter to KBO 46.73295230 +/- 0.0015
# Hcoef: 6.62
The following table shows the complete astrometric record for 02CY154. 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 (02CY154) followed by the observatory code and reference code for the source of the astrometry.
2002 02 06.40649 11 07 54.09 +06 19 54.8 22.6R 02CY154 695 Cf0336 2002 02 06.49976 11 07 53.78 +06 19 56.9 02CY154 695 Cf0336 2002 02 07.51447 11 07 50.19 +06 20 20.4 02CY154 695 Cf0336 2002 03 20.22673 11 05 09.35 +06 37 16.9 02CY154 695 Cf5529 2002 03 20.35104 11 05 08.87 +06 37 20.2 02CY154 695 Cf5529 2003 03 30.20052 11 08 33.31 +06 16 50.1 22.8R 02CY154 695 Ci0065 2003 03 30.29729 11 08 32.93 +06 16 52.3 02CY154 695 Ci0065 2003 04 30.31900 11 06 59.96 +06 26 20.1 23.4R 02CY154 568 Ci0065 2003 05 01.28422 11 06 57.91 +06 26 31.7 02CY154 568 Ci0065 2003 05 01.37205 11 06 57.76 +06 26 33.6 02CY154 568 Ci0065 2015 02 18.30007 11 58 45.46 +01 03 10.7 23.5R 02CY154 695 C~1M63 2015 02 18.39381 11 58 45.13 +01 03 12.9 02CY154 695 C~1M63 2015 02 18.48230 11 58 44.80 +01 03 14.7 02CY154 695 C~1M63 2015 03 18.488966 11 56 58.899 +01 14 55.63 23.4r 02CY154 568 C~2ReA 2015 03 18.547005 11 56 58.666 +01 14 57.09 23.4r 02CY154 568 C~2ReA 2015 03 18.549212 11 56 58.655 +01 14 57.17 23.4r 02CY154 568 C~2ReA 2015 03 20.437180 11 56 51.082 +01 15 46.73 23.0i 02CY154 568 C~2ReA 2015 03 20.471724 11 56 50.942 +01 15 47.61 22.9i 02CY154 568 C~2ReA 2015 03 20.474493 11 56 50.927 +01 15 47.72 22.9i 02CY154 568 C~2ReA 2015 03 20.516256 11 56 50.761 +01 15 48.78 23.0i 02CY154 568 C~2ReA 2015 03 20.551940 11 56 50.612 +01 15 49.72 22.9i 02CY154 568 C~2ReA 2015 03 20.554741 11 56 50.600 +01 15 49.80 22.9i 02CY154 568 C~2ReA 2021 03 20.286550 12 20 32.609 -01 14 37.64 23.5G 02CY154 G37 C~4hhn 2021 03 20.319910 12 20 32.467 -01 14 36.69 02CY154 G37 C~4hhn 2021 03 20.347200 12 20 32.355 -01 14 35.96 02CY154 G37 C~4hhn
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 -0.26 0.00 0.00
2 0.0003 0.00 0.09 0.00 -0.00
3 0.0030 0.00 -0.02 0.00 0.43
4 0.1145 0.00 0.36 0.00 -0.04
5 0.1148 0.00 0.62 0.00 0.22
6 1.1411 0.00 0.12 0.00 -0.05
7 1.1414 0.00 -0.11 0.00 -0.07
8 1.2263 0.00 -0.25 0.00 -0.19
9 1.2290 0.00 -0.66 0.00 -0.63
10 1.2292 0.00 -0.09 0.00 0.20
11 13.0319 0.00 0.31 0.00 0.40
12 13.0321 0.00 0.18 0.00 0.48
13 13.0324 0.00 -0.22 0.00 0.28
14 13.1091 0.00 -0.03 0.00 -0.06
15 13.1092 0.00 0.02 0.00 -0.12
16 13.1092 0.00 -0.01 0.00 -0.10
17 13.1144 0.00 -0.00 0.00 -0.07
18 13.1145 0.00 0.02 0.00 -0.10
19 13.1145 0.00 -0.04 0.00 -0.06
20 13.1146 0.00 0.03 0.00 -0.09
21 13.1147 0.00 -0.02 0.00 -0.09
22 13.1147 0.00 -0.03 0.00 -0.08
23 19.1153 0.00 0.03 0.00 -0.13
24 19.1154 0.00 -0.07 0.00 -0.05
25 19.1155 0.00 -0.09 0.00 -0.03
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.
02CY154 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.148 44.148 44.148 ecceobj 0.082 0.082 0.082 incobj 0.980 0.980 0.980 qmin 39.939 39.891 39.930 qmax 48.997 48.978 48.967 amean 44.327 44.326 44.321 amin 43.972 43.968 43.965 amax 44.707 44.707 44.709 emean 0.080 0.081 0.080 emin 0.064 0.065 0.064 emax 0.097 0.096 0.096 imean 1.246 1.248 1.244 imin 0.542 0.543 0.542 imax 1.832 1.840 1.834 excite_mean 0.083 0.084 0.083 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 187.1 186.7 188.5 kozaiamp 179.9 180.0 180.0