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: 02CE251
# Created Sun Dec 22 02:08:21 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 23 observations of 23
# Arc: 13.12y
# First observation: 2002/02/08
# Last observation: 2015/03/23
# Chi-squared of fit: 70.90 DOF: 40 RMS: 0.31
# Min/Max residuals: -0.86 0.68
# Exact a, adot, b, bdot, g, gdot:
1.899243E-05 4.310268E-02 -2.382022E-06 -7.042696E-03 3.440142E-02 -4.920385E-03
# Covariance matrix:
6.3677E-13 -7.7456E-14 -7.5045E-15 1.1343E-14 6.9884E-13 -1.0558E-13
-7.7456E-14 7.3445E-14 8.2712E-15 -1.2239E-14 -2.3938E-14 1.1663E-13
-7.5045E-15 8.2712E-15 1.3644E-13 -1.3110E-14 -2.6495E-15 1.3435E-14
1.1343E-14 -1.2239E-14 -1.3110E-14 3.7314E-15 4.2869E-15 -1.9880E-14
6.9884E-13 -2.3938E-14 -2.6495E-15 4.2869E-15 1.0469E-12 -3.7003E-14
-1.0558E-13 1.1663E-13 1.3435E-14 -1.9880E-14 -3.7003E-14 1.8944E-13
# lat0 lon0 xBary yBary zBary JD0
0.004710 163.270373 0.393887 -0.000011 -0.901561 2452313.855633
# Heliocentric elements and errors
Epoch: 2452314.5000 = 2002/02/09
Mean Anomaly: 340.51442 +/- 0.008
Argument of Peri: 214.19003 +/- 0.011
Long of Asc Node: 342.53486 +/- 0.000
Inclination: 9.28234 +/- 0.000
Eccentricity: 0.26861748 +/- 0.0001
Semi-Major Axis: 39.47959476 +/- 0.0069
Time of Perihelion: 2457218.7013 +/- 22.6
Perihelion: 28.87468563 +/- 0.0064
Aphelion: 50.08450390 +/- 0.0096
Period (y) 248.0660 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -28.58716801 +/- 0.0008
Ecliptic Y 9.00933228 +/- 0.0003
Ecliptic Z 0.00233127 +/- 0.0000
Ecliptic XDOT -0.00062097 +/- 0.0000
Ecliptic YDOT -0.00339856 +/- 0.0000
Ecliptic ZDOT -0.00056031 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.97329728 +/- 0.0008
Geocenter to KBO 29.06866179 +/- 0.0009
# Hcoef: 8.38
The following table shows the complete astrometric record for 02CE251. 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 (02CE251) followed by the observatory code and reference code for the source of the astrometry.
2002 02 08.35489 10 58 20.23 +06 34 45.4 22.7R 02CE251 695 Cf5629 2002 02 08.47609 10 58 19.56 +06 34 49.4 02CE251 695 Cf5629 2002 03 18.20894 10 54 30.17 +06 55 41.6 23.0R 02CE251 695 Cf5629 2002 03 18.26785 10 54 29.81 +06 55 43.8 02CE251 695 Cf5629 2002 04 06.18515 10 52 45.66 +07 05 02.1 02CE251 696 Cf5629 2002 04 06.24634 10 52 45.35 +07 05 03.8 02CE251 696 Cf5629 2002 04 06.27479 10 52 45.19 +07 05 04.2 02CE251 696 Cf5629 2003 03 30.22932 11 01 58.66 +05 42 12.6 22.8R 02CE251 695 Ch8257 2003 03 30.32694 11 01 58.10 +05 42 15.5 02CE251 695 Ch8257 2003 03 31.27632 11 01 52.86 +05 42 44.1 02CE251 695 Ch8257 2004 03 20.31502 11 11 31.87 +04 16 11.3 22.6R 02CE251 662 Ck2152 2004 03 20.42410 11 11 31.14 +04 16 14.2 02CE251 662 Ck2152 2013 03 12.29561 12 33 11.76 -08 29 06.0 22.5R 02CE251 G37 C~0qSR 2013 03 12.29658 12 33 11.74 -08 29 05.6 22.5R 02CE251 695 C~0ucs 2013 03 12.34973 12 33 11.41 -08 29 04.1 02CE251 695 C~0ucs 2013 03 12.43009 12 33 10.93 -08 29 01.7 02CE251 G37 C~0qSR 2013 03 13.31812 12 33 05.59 -08 28 34.8 02CE251 695 C~0ucs 2014 03 26.13732 12 41 09.66 -09 45 58.8 23.4V 02CE251 W84 C~2J8n 2014 03 26.20528 12 41 09.22 -09 45 56.5 02CE251 W84 C~2J8n 2014 03 26.27392 12 41 08.77 -09 45 54.2 02CE251 W84 C~2J8n 2015 03 23.31993 12 50 57.12 -11 11 11.0 22.5R 02CE251 695 C~1Q3B 2015 03 23.38391 12 50 56.72 -11 11 08.9 02CE251 695 C~1Q3B 2015 03 23.44674 12 50 56.32 -11 11 07.0 02CE251 695 C~1Q3B
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 -0.23
2 0.0003 0.00 0.37 0.00 0.12
3 0.1036 0.00 -0.21 0.00 0.40
4 0.1038 0.00 -0.23 0.00 0.68
5 0.1556 0.00 0.59 0.00 -0.14
6 0.1558 0.00 0.55 0.00 -0.02
7 0.1558 0.00 0.28 0.00 -0.35
8 1.1359 0.00 -0.24 0.00 0.27
9 1.1361 0.00 -0.37 0.00 0.19
10 1.1387 0.00 -0.62 0.00 -0.06
11 2.1108 0.00 0.19 0.00 -0.04
12 2.1111 0.00 -0.71 0.00 -0.86
13 11.0881 0.00 0.36 0.00 -0.17
14 11.0881 0.00 0.14 0.00 0.19
15 11.0883 0.00 0.06 0.00 0.08
16 11.0885 0.00 0.22 0.00 0.05
17 11.0909 0.00 0.14 0.00 -0.24
18 12.1253 0.00 -0.17 0.00 -0.04
19 12.1255 0.00 -0.19 0.00 -0.05
20 12.1257 0.00 -0.29 0.00 -0.10
21 13.1169 0.00 -0.08 0.00 0.11
22 13.1171 0.00 0.02 0.00 0.18
23 13.1173 0.00 0.01 0.00 0.08
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.
02CE251 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.169 39.169 39.170 ecceobj 0.264 0.264 0.264 incobj 9.307 9.307 9.307 qmin 28.103 28.106 28.102 qmax 51.473 51.499 51.542 amean 39.455 39.455 39.455 amin 38.926 38.912 38.892 amax 40.081 40.096 40.098 emean 0.269 0.269 0.271 emin 0.248 0.250 0.255 emax 0.287 0.286 0.287 imean 10.254 10.157 10.083 imin 9.446 9.434 9.415 imax 11.210 10.952 10.524 excite_mean 0.323 0.322 0.323 fracstop 1.000 1.000 1.000 cjmean 2.932 2.933 2.932 libcent 0 178.3 181.9 181.3 libamp 0 124.5 123.4 123.9 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 178.7 176.0 186.8 kozaiamp 179.9 180.0 179.9