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: 17CE60 # Created Wed Dec 25 02:10:52 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 25 observations of 25 # Arc: 14.08y # First observation: 2003/01/03 # Last observation: 2017/02/01 # Chi-squared of fit: 7.10 DOF: 44 RMS: 0.09 # Min/Max residuals: -0.27 0.22 # Exact a, adot, b, bdot, g, gdot: 2.344226E-05 6.470729E-02 3.441030E-06 9.221030E-03 4.379164E-02 1.802621E-02 # Covariance matrix: 3.9444E-13 -2.8461E-14 -3.0055E-15 -3.8178E-16 1.2138E-13 -2.2435E-15 -2.8461E-14 8.3216E-14 -9.2319E-15 1.1215E-14 1.4567E-13 9.8375E-14 -3.0055E-15 -9.2319E-15 3.5707E-13 -2.8340E-14 -2.6798E-14 -1.1205E-14 -3.8178E-16 1.1215E-14 -2.8340E-14 4.0472E-15 1.9632E-14 1.3670E-14 1.2138E-13 1.4567E-13 -2.6798E-14 1.9632E-14 6.5983E-13 1.7575E-13 -2.2435E-15 9.8375E-14 -1.1205E-14 1.3670E-14 1.7575E-13 1.1989E-13 # lat0 lon0 xBary yBary zBary JD0 -24.408567 103.406229 0.014968 -0.404264 -0.890852 2452642.896995 # Heliocentric elements and errors Epoch: 2452642.5000 = 2003/01/03 Mean Anomaly: 14.48534 +/- 0.003 Argument of Peri: 240.10528 +/- 0.004 Long of Asc Node: 174.35873 +/- 0.000 Inclination: 24.62214 +/- 0.000 Eccentricity: 0.50570450 +/- 0.0001 Semi-Major Axis: 42.82917533 +/- 0.0062 Time of Perihelion: 2448523.0966 +/- 1.3 Perihelion: 21.17026855 +/- 0.0039 Aphelion: 64.48808211 +/- 0.0097 Period (y) 280.2966 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -5.03542922 +/- 0.0001 Ecliptic Y 21.18757352 +/- 0.0004 Ecliptic Z -9.43645576 +/- 0.0002 Ecliptic XDOT -0.00423554 +/- 0.0000 Ecliptic YDOT 0.00028802 +/- 0.0000 Ecliptic ZDOT 0.00005945 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 23.73412036 +/- 0.0003 Geocenter to KBO 22.83530114 +/- 0.0004 # Hcoef: 8.32
The following table shows the complete astrometric record for 17CE60. 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 (17CE60) followed by the observatory code and reference code for the source of the astrometry.
2003 01 03.396252 06 48 46.34 -01 32 05.8 17CE60 T14 C~89UW 2003 01 03.401245 06 48 46.30 -01 32 05.7 17CE60 T14 C~89UW 2003 01 29.359233 06 45 29.62 -01 19 23.6 17CE60 T14 C~89UW 2003 01 29.363965 06 45 29.58 -01 19 23.4 17CE60 T14 C~89UW 2014 02 11.154086 08 58 26.88 +00 27 07.8 22.2z 17CE60 W84 C~89UW 2014 02 11.157892 08 58 26.86 +00 27 07.8 22.5z 17CE60 W84 C~89UW 2014 02 11.161694 08 58 26.84 +00 27 08.1 22.5z 17CE60 W84 C~89UW 2014 02 11.165525 08 58 26.81 +00 27 08.2 22.3z 17CE60 W84 C~89UW 2014 02 11.173142 08 58 26.75 +00 27 08.6 22.4z 17CE60 W84 C~89UW 2015 01 16.471112 09 10 46.85 +00 19 54.2 17CE60 T09 C~89UW 2015 02 18.175888 09 07 21.71 +00 38 20.7 23.7g 17CE60 W84 C~89UW 2016 01 12.353822 09 20 22.60 +00 24 48.7 17CE60 T09 C~89UW 2016 01 12.367085 09 20 22.53 +00 24 48.9 17CE60 T09 C~89UW 2016 01 14.280508 09 20 11.92 +00 25 27.0 23.1r 17CE60 W84 C~89UW 2016 11 28.56332 09 31 32.90 +00 30 05.5 23.8r 17CE60 T09 C~89UW 2016 11 28.58230 09 31 32.88 +00 30 05.0 23.5r 17CE60 T09 C~89UW 2016 11 28.63097 09 31 32.82 +00 30 04.4 23.6r 17CE60 T09 C~89UW 2017 01 02.418269 09 29 57.04 +00 28 34.5 17CE60 T09 C~89UW 2017 01 28.406130 09 27 36.67 +00 37 52.7 17CE60 T09 C~89UW 2017 02 01.49788 09 27 11.84 +00 40 03.7 23.1i 17CE60 T09 C~89UW 2017 02 01.50344 09 27 11.81 +00 40 04.1 23.1i 17CE60 T09 C~89UW 2017 02 01.51720 09 27 11.72 +00 40 04.4 23.1i 17CE60 T09 C~89UW 2017 02 01.53911 09 27 11.58 +00 40 05.2 23.1i 17CE60 T09 C~89UW 2017 02 01.54461 09 27 11.54 +00 40 05.2 23.0i 17CE60 T09 C~89UW 2017 02 01.55276 09 27 11.50 +00 40 05.6 22.9i 17CE60 T09 C~89UW
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 -0.02 0.00 -0.02
2 0.0000 0.00 -0.00 0.00 0.00
3 0.0711 0.00 0.05 0.00 0.01
4 0.0711 0.00 -0.06 0.00 0.01
5 11.1068 0.00 -0.04 0.00 0.04
6 11.1068 0.00 0.03 0.00 -0.12
7 11.1068 0.00 0.10 0.00 0.03
8 11.1068 0.00 0.02 0.00 -0.02
9 11.1068 0.00 -0.13 0.00 0.07
10 12.0358 0.00 0.11 0.00 -0.03
11 12.1253 0.00 -0.10 0.00 0.18
12 13.0238 0.00 0.04 0.00 -0.01
13 13.0239 0.00 0.09 0.00 -0.06
14 13.0291 0.00 -0.19 0.00 -0.12
15 13.9033 0.00 0.08 0.00 -0.05
16 13.9033 0.00 0.01 0.00 -0.24
17 13.9034 0.00 -0.27 0.00 -0.05
18 13.9987 0.00 0.03 0.00 -0.02
19 14.0698 0.00 -0.04 0.00 -0.04
20 14.0810 0.00 0.04 0.00 0.01
21 14.0811 0.00 0.11 0.00 0.22
22 14.0811 0.00 0.05 0.00 0.07
23 14.0812 0.00 -0.01 0.00 0.14
24 14.0812 0.00 -0.10 0.00 -0.05
25 14.0812 0.00 0.06 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.
17CE60 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 42.836 42.836 42.835 ecceobj 0.507 0.507 0.507 incobj 24.635 24.635 24.635 qmin 20.914 20.919 20.912 qmax 64.666 64.666 64.666 amean 42.328 42.319 42.269 amin 41.687 41.787 41.283 amax 42.987 43.123 42.928 emean 0.487 0.482 0.491 emin 0.449 0.456 0.454 emax 0.507 0.507 0.507 imean 24.763 25.229 24.549 imin 23.864 23.870 23.857 imax 26.902 26.814 26.686 excite_mean 0.642 0.644 0.643 fracstop 0.042 0.049 0.032 cjmean 2.601 2.600 2.599 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 245.6 254.6 245.2 kozaiamp 8.9 24.0 9.8