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: 01XU254 # Created Sat Apr 27 01:10:36 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 19.00y # First observation: 2001/12/09 # Last observation: 2020/12/09 # Chi-squared of fit: 74.07 DOF: 54 RMS: 0.28 # Min/Max residuals: -0.79 0.61 # Exact a, adot, b, bdot, g, gdot: 1.753161E-05 2.299895E-02 -2.586336E-07 2.595940E-03 2.390252E-02 -1.507339E-03 # Covariance matrix: 1.5023E-13 -1.4879E-15 -8.6708E-16 4.9576E-16 9.9277E-14 9.4609E-15 -1.4879E-15 2.0633E-14 -3.6130E-15 2.2346E-15 6.0468E-14 4.3411E-14 -8.6708E-16 -3.6130E-15 9.4893E-14 -6.9671E-15 -1.0970E-14 -7.9438E-15 4.9576E-16 2.2346E-15 -6.9671E-15 1.1375E-15 6.7228E-15 4.9146E-15 9.9277E-14 6.0468E-14 -1.0970E-14 6.7228E-15 3.1338E-13 1.3034E-13 9.4609E-15 4.3411E-14 -7.9438E-15 4.9146E-15 1.3034E-13 9.5478E-14 # lat0 lon0 xBary yBary zBary JD0 -1.005850 106.707016 0.479709 -0.015061 -0.853410 2452252.885873 # Heliocentric elements and errors Epoch: 2452252.5000 = 2001/12/09 Mean Anomaly: 292.44558 +/- 0.035 Argument of Peri: 67.46115 +/- 0.041 Long of Asc Node: 114.75047 +/- 0.000 Inclination: 6.49545 +/- 0.000 Eccentricity: 0.07893914 +/- 0.0000 Semi-Major Axis: 43.77394038 +/- 0.0039 Time of Perihelion: 2472103.0767 +/- 15.2 Perihelion: 40.31846339 +/- 0.0038 Aphelion: 47.22941737 +/- 0.0044 Period (y) 289.6221 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -11.81012419 +/- 0.0003 Ecliptic Y 41.02518923 +/- 0.0009 Ecliptic Z -0.73444028 +/- 0.0000 Ecliptic XDOT -0.00248362 +/- 0.0000 Ecliptic YDOT -0.00091769 +/- 0.0000 Ecliptic ZDOT 0.00030054 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.69764279 +/- 0.0009 Geocenter to KBO 41.83666299 +/- 0.0010 # Hcoef: 6.65
The following table shows the complete astrometric record for 01XU254. 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 (01XU254) followed by the observatory code and reference code for the source of the astrometry.
2001 12 09.38513 07 11 55.57 +21 23 47.7 01XU254 568 Ce7056 2001 12 09.41419 07 11 55.45 +21 23 47.6 01XU254 568 Ce7056 2001 12 09.45138 07 11 55.29 +21 23 48.1 01XU254 568 Ce7056 2002 01 09.50295 07 09 20.96 +21 28 45.2 01XU254 568 Ce7056 2002 01 09.52848 07 09 20.83 +21 28 45.4 01XU254 568 Ce7056 2002 01 09.55405 07 09 20.69 +21 28 45.8 22.4R 01XU254 568 Ce7056 2002 02 03.44805 07 07 18.08 +21 32 53.5 22.7R 01XU254 568 Cf2430 2002 02 04.44306 07 07 13.70 +21 33 02.9 01XU254 568 Cf2430 2002 02 05.45629 07 07 09.27 +21 33 12.1 01XU254 568 Cf2430 2002 10 31.53102 07 19 32.15 +21 18 39.5 22.4R 01XU254 568 Cg5849 2002 11 01.54547 07 19 30.92 +21 18 42.2 22.7R 01XU254 568 Cg5849 2003 05 01.25703 07 11 41.29 +21 38 09.7 21.3R 01XU254 568 Ci0016 2005 01 08.34144 07 26 41.84 +21 23 35.7 22.6r 01XU254 568 C~0D2Y 2005 01 08.37932 07 26 41.63 +21 23 36.3 23.4r 01XU254 568 C~0D2Y 2005 01 08.41709 07 26 41.44 +21 23 36.8 23.6r 01XU254 568 C~0D2Y 2006 02 25.16324 07 28 48.88 +21 29 45.8 22.5R 01XU254 688 Cq5973 2006 02 25.26905 07 28 48.51 +21 29 46.6 01XU254 688 Cq5973 2009 02 26.15156 07 46 01.88 +21 17 39.2 23.6R 01XU254 688 C~04pJ 2009 02 26.25003 07 46 01.49 +21 17 40.1 01XU254 688 C~04pJ 2013 03 13.16304 08 08 28.28 +20 53 19.8 22.5R 01XU254 695 C~0ucs 2013 03 14.14592 08 08 25.62 +20 53 28.8 01XU254 695 C~0ucs 2013 03 14.23631 08 08 25.35 +20 53 29.5 01XU254 695 C~0ucs 2015 02 18.15977 08 21 40.06 +20 30 10.2 22.1R 01XU254 695 C~1M62 2015 02 18.20668 08 21 39.85 +20 30 11.0 01XU254 695 C~1M62 2015 02 18.25255 08 21 39.64 +20 30 11.8 01XU254 695 C~1M62 2020 01 30.479874 08 52 42.139 +19 24 06.22 22.5G 01XU254 T12 C~3q9r 2020 01 30.540865 08 52 41.828 +19 24 07.56 22.6G 01XU254 T12 C~3q9r 2020 12 09.421750 09 02 07.078 +18 52 31.38 22.8G 01XU254 G37 C~4Tw5 2020 12 09.472900 09 02 06.942 +18 52 32.15 01XU254 G37 C~4Tw5 2020 12 09.517330 09 02 06.830 +18 52 32.66 01XU254 G37 C~4Tw5
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 -0.46 0.00 0.46
2 0.0001 0.00 -0.30 0.00 0.11
3 0.0002 0.00 -0.19 0.00 0.29
4 0.0852 0.00 -0.16 0.00 0.03
5 0.0853 0.00 -0.09 0.00 -0.02
6 0.0853 0.00 -0.17 0.00 0.12
7 0.1535 0.00 0.02 0.00 -0.25
8 0.1562 0.00 0.37 0.00 -0.14
9 0.1590 0.00 0.36 0.00 -0.33
10 0.8929 0.00 0.61 0.00 0.22
11 0.8957 0.00 0.54 0.00 0.30
12 1.3905 0.00 -0.08 0.00 0.27
13 3.0827 0.00 -0.09 0.00 -0.79
14 3.0828 0.00 -0.24 0.00 -0.66
15 3.0829 0.00 -0.09 0.00 -0.63
16 4.2129 0.00 -0.02 0.00 0.32
17 4.2132 0.00 -0.11 0.00 0.17
18 7.2163 0.00 0.01 0.00 0.15
19 7.2166 0.00 -0.47 0.00 0.02
20 11.2574 0.00 0.06 0.00 0.05
21 11.2601 0.00 0.49 0.00 0.22
22 11.2604 0.00 0.20 0.00 0.12
23 13.1931 0.00 -0.18 0.00 0.07
24 13.1932 0.00 -0.08 0.00 0.11
25 13.1933 0.00 -0.05 0.00 0.17
26 18.1413 0.00 0.11 0.00 -0.13
27 18.1414 0.00 0.17 0.00 -0.12
28 19.0008 0.00 -0.03 0.00 -0.02
29 19.0009 0.00 -0.13 0.00 0.01
30 19.0010 0.00 -0.12 0.00 -0.11
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.
01XU254 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.587 43.587 43.587 ecceobj 0.076 0.076 0.076 incobj 6.507 6.507 6.507 qmin 39.450 39.459 39.440 qmax 47.812 47.830 47.762 amean 43.492 43.492 43.493 amin 43.153 43.149 43.139 amax 43.853 43.865 43.850 emean 0.072 0.072 0.072 emin 0.054 0.055 0.055 emax 0.090 0.091 0.090 imean 4.996 4.996 4.996 imin 4.183 4.183 4.183 imax 5.811 5.814 5.809 excite_mean 0.113 0.113 0.113 fracstop 1.000 1.000 1.000 cjmean 3.080 3.080 3.080 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 182.3 182.2 182.3 kozaiamp 180.0 180.0 179.9