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: 01XX254
# Created Sun Nov 24 02:08:14 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 23 observations of 23
# Arc: 20.22y
# First observation: 2001/12/11
# Last observation: 2022/03/02
# Chi-squared of fit: 18.48 DOF: 40 RMS: 0.16
# Min/Max residuals: -0.36 0.46
# Exact a, adot, b, bdot, g, gdot:
1.548295E-05 2.228686E-02 1.961797E-06 6.336730E-04 2.338864E-02 -3.795150E-04
# Covariance matrix:
2.0188E-13 -2.0850E-14 4.9212E-16 -3.4240E-16 3.0421E-14 -2.5669E-14
-2.0850E-14 2.0415E-14 -5.5574E-16 5.4560E-16 3.9643E-14 4.1068E-14
4.9212E-16 -5.5574E-16 1.7710E-13 -1.0039E-14 -6.1300E-16 -1.1959E-15
-3.4240E-16 5.4560E-16 -1.0039E-14 8.7558E-16 9.9379E-16 1.1521E-15
3.0421E-14 3.9643E-14 -6.1300E-16 9.9379E-16 2.2622E-13 7.5095E-14
-2.5669E-14 4.1068E-14 -1.1959E-15 1.1521E-15 7.5095E-14 8.6707E-14
# lat0 lon0 xBary yBary zBary JD0
0.639602 107.254605 0.456871 0.009587 -0.865698 2452254.904443
# Heliocentric elements and errors
Epoch: 2452254.5000 = 2001/12/11
Mean Anomaly: 293.85636 +/- 0.091
Argument of Peri: 90.18221 +/- 0.098
Long of Asc Node: 85.67014 +/- 0.002
Inclination: 1.75037 +/- 0.000
Eccentricity: 0.02869486 +/- 0.0000
Semi-Major Axis: 44.10979560 +/- 0.0033
Time of Perihelion: 2471914.6401 +/- 28.8
Perihelion: 42.84407117 +/- 0.0034
Aphelion: 45.37552002 +/- 0.0036
Period (y) 292.9616 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -12.50076794 +/- 0.0003
Ecliptic Y 41.79678220 +/- 0.0008
Ecliptic Z 0.47735459 +/- 0.0000
Ecliptic XDOT -0.00248663 +/- 0.0000
Ecliptic YDOT -0.00081711 +/- 0.0000
Ecliptic ZDOT 0.00007389 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.62876989 +/- 0.0008
Geocenter to KBO 42.75584045 +/- 0.0009
# Hcoef: 7.35
The following table shows the complete astrometric record for 01XX254. 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 (01XX254) followed by the observatory code and reference code for the source of the astrometry.
2001 12 11.40370 07 15 09.88 +22 57 37.2 01XX254 568 Ce7056 2001 12 11.42722 07 15 09.79 +22 57 37.7 01XX254 568 Ce7056 2001 12 11.45024 07 15 09.68 +22 57 37.9 01XX254 568 Ce7056 2002 01 09.46883 07 12 46.17 +23 02 06.4 01XX254 568 Ce7056 2002 01 09.49446 07 12 46.02 +23 02 06.8 23.5R 01XX254 568 Ce7056 2002 04 06.15033 07 08 36.12 +23 08 44.9 01XX254 696 Cf5236 2002 04 06.21341 07 08 36.16 +23 08 44.4 01XX254 696 Cf5236 2002 11 02.53348 07 22 38.54 +22 45 06.5 23.6R 01XX254 568 Cg5849 2002 11 03.52438 07 22 37.22 +22 45 10.2 01XX254 568 Cg5849 2013 03 12.12103 08 08 47.06 +21 11 39.6 23.5R 01XX254 G37 C~0qSR 2013 03 12.26300 08 08 46.65 +21 11 40.7 01XX254 G37 C~0qSR 2015 02 18.15977 08 21 02.49 +20 36 58.1 22.9R 01XX254 695 C~1M62 2015 02 18.20668 08 21 02.29 +20 36 58.7 01XX254 695 C~1M62 2015 02 18.25255 08 21 02.09 +20 36 59.3 01XX254 695 C~1M62 2020 12 09.418730 08 58 19.868 +18 28 06.31 23.6G 01XX254 G37 C~4Tw5 2020 12 09.470200 08 58 19.762 +18 28 06.57 01XX254 G37 C~4Tw5 2020 12 09.514680 08 58 19.644 +18 28 07.28 01XX254 G37 C~4Tw5 2021 01 11.415140 08 56 20.070 +18 37 06.99 23.4G 01XX254 G37 C~4Tw5 2021 01 11.455540 08 56 19.856 +18 37 07.55 01XX254 G37 C~4Tw5 2021 01 11.496190 08 56 19.679 +18 37 08.50 01XX254 G37 C~4Tw5 2022 03 02.126830 08 57 46.931 +18 33 01.07 23.7G 01XX254 G37 C~5Rjx 2022 03 02.164930 08 57 46.773 +18 33 01.53 01XX254 G37 C~5Rjx 2022 03 02.205310 08 57 46.593 +18 33 02.20 01XX254 G37 C~5Rjx
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 -0.30
2 0.0001 0.00 0.11 0.00 -0.01
3 0.0001 0.00 0.03 0.00 -0.02
4 0.0796 0.00 0.00 0.00 -0.04
5 0.0796 0.00 -0.23 0.00 0.13
6 0.3169 0.00 0.12 0.00 0.46
7 0.3171 0.00 -0.01 0.00 0.10
8 0.8929 0.00 -0.01 0.00 -0.23
9 0.8956 0.00 0.01 0.00 -0.36
10 11.2491 0.00 0.04 0.00 0.18
11 11.2494 0.00 0.03 0.00 0.20
12 13.1876 0.00 -0.13 0.00 0.17
13 13.1877 0.00 0.02 0.00 0.10
14 13.1878 0.00 0.11 0.00 0.04
15 18.9953 0.00 -0.31 0.00 0.18
16 18.9954 0.00 0.07 0.00 -0.18
17 18.9955 0.00 0.00 0.00 -0.01
18 19.0856 0.00 0.30 0.00 -0.03
19 19.0857 0.00 -0.12 0.00 -0.25
20 19.0858 0.00 0.03 0.00 -0.09
21 20.2210 0.00 0.02 0.00 0.10
22 20.2211 0.00 0.07 0.00 -0.08
23 20.2212 0.00 -0.07 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.
01XX254 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.930 43.930 43.930 ecceobj 0.025 0.025 0.025 incobj 1.750 1.750 1.750 qmin 41.797 41.790 41.815 qmax 45.993 45.982 45.998 amean 43.824 43.824 43.824 amin 43.490 43.485 43.493 amax 44.165 44.164 44.168 emean 0.026 0.026 0.026 emin 0.009 0.009 0.009 emax 0.041 0.041 0.042 imean 0.654 0.654 0.654 imin 0.564 0.564 0.564 imax 0.761 0.761 0.761 excite_mean 0.029 0.029 0.029 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 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 180.7 180.7 180.8 kozaiamp 180.0 179.9 180.0