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: 13UC17 # Created Sun Dec 22 02:09:48 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 25 observations of 25 # Arc: 7.27y # First observation: 2013/10/06 # Last observation: 2021/01/11 # Chi-squared of fit: 7.45 DOF: 44 RMS: 0.10 # Min/Max residuals: -0.18 0.32 # Exact a, adot, b, bdot, g, gdot: 2.118841E-05 8.453065E-02 -1.334480E-05 -5.378558E-02 6.230027E-02 -4.565846E-03 # Covariance matrix: 1.3373E-13 -9.6216E-14 -2.9617E-14 6.0769E-14 5.5750E-14 -1.4324E-13 -9.6216E-14 1.7331E-13 5.5780E-14 -1.1618E-13 -1.0333E-14 2.5905E-13 -2.9617E-14 5.5780E-14 1.0012E-13 -5.6968E-14 -1.1153E-14 9.1696E-14 6.0769E-14 -1.1618E-13 -5.6968E-14 9.6059E-14 1.9838E-14 -1.8997E-13 5.5750E-14 -1.0333E-14 -1.1153E-14 1.9838E-14 1.8768E-13 -7.2843E-14 -1.4324E-13 2.5905E-13 9.1696E-14 -1.8997E-13 -7.2843E-14 4.3218E-13 # lat0 lon0 xBary yBary zBary JD0 -0.618016 15.214260 0.039176 -0.010698 -0.998813 2456571.901908 # Heliocentric elements and errors Epoch: 2456572.5000 = 2013/10/07 Mean Anomaly: 340.63391 +/- 0.005 Argument of Peri: 206.23215 +/- 0.007 Long of Asc Node: 194.17668 +/- 0.000 Inclination: 32.47287 +/- 0.000 Eccentricity: 0.12916061 +/- 0.0000 Semi-Major Axis: 19.36694382 +/- 0.0007 Time of Perihelion: 2458247.1713 +/- 1.6 Perihelion: 16.86549759 +/- 0.0007 Aphelion: 21.86839006 +/- 0.0009 Period (y) 85.2314 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.46141228 +/- 0.0001 Ecliptic Y 4.43918109 +/- 0.0000 Ecliptic Z -0.17334228 +/- 0.0000 Ecliptic XDOT -0.00119925 +/- 0.0000 Ecliptic YDOT 0.00352386 +/- 0.0000 Ecliptic ZDOT -0.00236122 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 17.05037093 +/- 0.0001 Geocenter to KBO 16.05135478 +/- 0.0001 # Hcoef: 11.39
The following table shows the complete astrometric record for 13UC17. 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 (13UC17) followed by the observatory code and reference code for the source of the astrometry.
2013 10 06.40113 00 56 59.981 +05 25 18.29 23.5r 13UC17 568 C~2NKY 2013 10 06.48380 00 56 59.137 +05 25 10.39 23.2r 13UC17 568 C~2NKY 2013 10 31.23096 00 53 02.356 +04 47 10.22 24.2r 13UC17 568 C~2NKY 2013 10 31.27407 00 53 01.964 +04 47 06.50 24.0r 13UC17 568 C~2NKY 2013 10 31.31685 00 53 01.586 +04 47 02.79 23.6r 13UC17 568 C~2NKY 2013 11 01.25731 00 52 53.404 +04 45 41.95 23.5r 13UC17 568 C~2NKY 2013 11 01.37789 00 52 52.336 +04 45 31.49 23.9r 13UC17 568 C~2NKY 2013 11 05.38291 00 52 18.639 +04 39 55.63 23.8r 13UC17 568 C~2NKY 2013 11 29.22005 00 49 46.591 +04 12 06.96 24.0r 13UC17 568 C~2NKY 2013 12 04.24712 00 49 27.490 +04 07 43.48 23.3r 13UC17 568 C~2NKY 2013 12 04.29457 00 49 27.324 +04 07 41.24 23.0r 13UC17 568 C~2NKY 2013 12 06.21068 00 49 21.454 +04 06 09.98 24.0r 13UC17 568 C~2NKY 2014 07 24.58453 01 26 13.671 +05 53 36.68 24.1r 13UC17 568 C~2NKY 2014 08 22.54448 01 25 33.977 +05 29 05.65 23.9r 13UC17 568 C~2NKY 2014 08 22.58310 01 25 33.780 +05 29 02.92 23.9r 13UC17 568 C~2NKY 2014 08 27.61916 01 25 09.651 +05 23 06.98 23.8r 13UC17 568 C~2NKY 2014 10 23.34457 01 17 00.409 +03 59 09.59 23.6r 13UC17 568 C~2NKY 2014 10 26.43997 01 16 30.078 +03 54 34.88 23.2r 13UC17 568 C~2NKY 2014 10 27.38331 01 16 20.943 +03 53 11.96 23.8r 13UC17 568 C~2NKY 2014 12 17.24304 01 10 53.740 +03 01 25.52 23.8r 13UC17 568 C~2NKY 2015 01 17.26915 01 11 43.927 +02 58 56.71 24.1r 13UC17 568 C~2NKY 2015 08 20.50250 01 48 01.106 +04 29 12.49 23.8r 13UC17 568 C~2NKY 2015 12 07.39011 01 33 38.467 +02 05 39.51 23.2w 13UC17 568 C~2NKY 2021 01 11.132760 03 22 15.430 -03 24 03.36 23.7G 13UC17 G37 C~4UBD 2021 01 11.198840 03 22 15.150 -03 24 01.39 13UC17 G37 C~4UBD
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 0.08 0.00 -0.04
2 0.0002 0.00 -0.00 0.00 -0.09
3 0.0680 0.00 0.09 0.00 0.01
4 0.0681 0.00 -0.02 0.00 0.01
5 0.0682 0.00 0.06 0.00 -0.02
6 0.0708 0.00 -0.07 0.00 -0.02
7 0.0711 0.00 -0.08 0.00 -0.17
8 0.0821 0.00 0.05 0.00 0.18
9 0.1473 0.00 0.07 0.00 -0.03
10 0.1611 0.00 -0.10 0.00 -0.01
11 0.1612 0.00 -0.10 0.00 0.07
12 0.1665 0.00 -0.06 0.00 -0.08
13 0.7972 0.00 -0.01 0.00 -0.07
14 0.8765 0.00 0.15 0.00 0.08
15 0.8766 0.00 -0.18 0.00 -0.03
16 0.8904 0.00 -0.00 0.00 0.01
17 1.0457 0.00 -0.13 0.00 -0.08
18 1.0542 0.00 0.12 0.00 0.32
19 1.0568 0.00 0.04 0.00 0.09
20 1.1960 0.00 0.23 0.00 -0.13
21 1.2810 0.00 -0.03 0.00 -0.02
22 1.8702 0.00 0.01 0.00 -0.02
23 2.1683 0.00 -0.05 0.00 0.08
24 7.2655 0.00 0.07 0.00 0.02
25 7.2657 0.00 -0.07 0.00 -0.07
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.
13UC17 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 19.366 19.366 19.366 ecceobj 0.129 0.129 0.129 incobj 32.428 32.428 32.428 qmin 15.506 13.978 14.725 qmax 23.637 23.487 24.217 amean 19.523 19.045 19.180 amin 18.825 18.232 18.750 amax 20.640 19.581 19.633 emean 0.144 0.151 0.104 emin 0.041 0.028 0.003 emax 0.204 0.237 0.235 imean 31.304 31.491 31.838 imin 29.787 29.238 29.522 imax 33.111 33.290 33.491 excite_mean 0.541 0.547 0.541 fracstop 0.121 0.075 0.554 cjmean 2.901 2.919 2.916 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 181.6 238.7 192.5 kozaiamp 62.0 179.7 180.0