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: 15VK173 # Created Tue Apr 1 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 36 # Arc: 3.06y # First observation: 2014/11/23 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000073 0.020893 -0.000001 0.004214 0.022888 0.000000 # Chi-squared of fit: 6.59 DOF: 64 RMS: 0.08 # Min/Max residuals: -0.33 0.25 # Exact a, adot, b, bdot, g, gdot: 1.465614E-05 2.108801E-02 2.930384E-06 4.250179E-03 2.301691E-02 1.103673E-03 # Covariance matrix: 7.6913E-13 -8.5227E-13 9.8824E-14 -1.4147E-13 -3.9521E-13 -9.6770E-12 -8.5227E-13 1.0671E-12 -1.3336E-13 1.9122E-13 5.1403E-13 1.3079E-11 9.8824E-14 -1.3336E-13 2.4384E-13 -1.4756E-13 -6.9722E-14 -1.7684E-12 -1.4147E-13 1.9122E-13 -1.4756E-13 1.1794E-13 9.8508E-14 2.5367E-12 -3.9521E-13 5.1403E-13 -6.9722E-14 9.8508E-14 3.6448E-13 6.7416E-12 -9.6770E-12 1.3079E-11 -1.7684E-12 2.5367E-12 6.7416E-12 1.7350E-10 # lat0 lon0 xBary yBary zBary JD0 -2.613499 47.525020 -0.223918 -0.043716 -0.961290 2456984.885458 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 102.72994 +/- 0.232 Argument of Peri: 238.37632 +/- 0.224 Long of Asc Node: 60.28797 +/- 0.001 Inclination: 11.68455 +/- 0.001 Eccentricity: 0.05601866 +/- 0.0006 Semi-Major Axis: 43.73869252 +/- 0.0037 Time of Perihelion: 2426830.1985 +/- 68.0 Perihelion: 41.28850970 +/- 0.0248 Aphelion: 46.18887534 +/- 0.0248 Period (y) 289.2723 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.78889965 +/- 0.0007 Ecliptic Y 32.87391787 +/- 0.0009 Ecliptic Z -1.98098347 +/- 0.0001 Ecliptic XDOT -0.00175024 +/- 0.0000 Ecliptic YDOT 0.00180258 +/- 0.0000 Ecliptic ZDOT 0.00049915 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.40717638 +/- 0.0008 Geocenter to KBO 43.44632299 +/- 0.0011 # Hcoef: 7.88
The following table shows the complete astrometric record for 15VK173. 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 (15VK173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 23.38468 03 03 16.677 +14 33 05.07 24.7r 15VK173 568 C~2nwH 2015 09 06.62757 03 12 38.276 +15 25 11.69 24.8w 15VK173 568 C~2nwH 2015 09 12.51723 03 12 28.534 +15 24 29.37 24.6w 15VK173 568 C~2nwH 2015 10 07.45292 03 11 17.967 +15 19 45.32 24.5w 15VK173 568 C~2nwH 2015 10 08.45753 03 11 14.252 +15 19 31.02 24.5w 15VK173 568 C~2nwH 2015 10 08.51654 03 11 14.037 +15 19 30.13 24.9w 15VK173 568 C~2nwH 2015 11 07.36426 03 09 04.624 +15 11 28.33 24.2r 15VK173 568 C~2nwH 2015 11 07.40638 03 09 04.420 +15 11 27.65 24.4r 15VK173 568 C~2nwH 2015 11 07.44859 03 09 04.217 +15 11 26.95 24.3r 15VK173 568 C~2nwH 2015 11 10.53471 03 08 49.605 +15 10 34.98 24.4w 15VK173 568 C~2nwH 2015 11 17.38127 03 08 17.202 +15 08 41.26 24.6w 15VK173 568 C~2nwH 2015 11 17.42797 03 08 16.973 +15 08 40.52 24.5w 15VK173 568 C~2nwH 2015 12 06.39016 03 06 51.165 +15 03 54.87 24.7w 15VK173 568 C~2nwH 2015 12 13.38310 03 06 22.660 +15 02 27.08 24.4w 15VK173 568 C~2nwH 2016 01 01.37764 03 05 19.485 +14 59 37.88 24.3w 15VK173 568 C~2nwH 2016 01 07.32440 03 05 04.985 +14 59 09.19 24.6w 15VK173 568 C~2nwH 2016 02 04.30735 03 04 37.848 +14 59 54.88 24.9w 15VK173 568 C~2nwH 2016 02 04.31413 03 04 37.796 +14 59 54.73 24.8w 15VK173 568 C~2nwH 2016 02 04.32117 03 04 37.817 +14 59 54.86 24.6w 15VK173 568 C~2nwH 2016 02 04.32803 03 04 37.827 +14 59 54.90 24.6w 15VK173 568 C~2nwH 2016 02 05.26985 03 04 38.162 +15 00 01.78 24.9w 15VK173 568 C~2nwH 2016 09 06.59240 03 17 06.472 +15 57 49.03 24.5w 15VK173 568 C~2nwH 2016 09 26.60468 03 16 22.602 +15 54 56.57 24.3w 15VK173 568 C~2nwH 2016 10 10.41386 03 15 35.570 +15 51 59.93 24.6w 15VK173 568 C~2nwH 2016 10 10.47261 03 15 35.350 +15 51 59.14 24.7w 15VK173 568 C~2nwH 2016 10 27.50838 03 14 23.628 +15 47 38.43 24.5w 15VK173 568 C~2nwH 2016 11 03.53341 03 13 51.216 +15 45 43.71 24.6w 15VK173 568 C~2nwH 2016 12 28.40571 03 09 57.853 +15 33 24.67 24.9w 15VK173 568 C~2nwH 2016 12 29.36323 03 09 55.013 +15 33 17.72 23.7w 15VK173 568 C~2nwH 2017 01 01.26044 03 09 46.845 +15 32 58.96 15VK173 568 C~2nwH 2017 01 02.37026 03 09 43.875 +15 32 52.32 24.6w 15VK173 568 C~2nwH 2017 01 26.26424 03 09 04.962 +15 32 19.34 24.7w 15VK173 568 C~2nwH 2017 09 15.60092 03 21 21.618 +16 29 08.73 24.5w 15VK173 568 C~2nwH 2017 09 22.58685 03 21 05.534 +16 28 09.47 24.7w 15VK173 568 C~2nwH 2017 12 16.38250 03 15 10.806 +16 08 21.98 24.6w 15VK173 568 C~2nwH 2017 12 16.38715 03 15 10.784 +16 08 21.79 24.3w 15VK173 568 C~2nwH
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 -0.03 0.00 -0.00
2 0.7864 8686.57 -0.00 791.48 0.06
3 0.8026 8539.25 0.01 788.37 0.13
4 0.8708 7478.20 0.05 788.36 -0.02
5 0.8736 7422.52 -0.06 789.03 0.08
6 0.8737 7419.28 0.06 789.01 -0.00
7 0.9555 5484.07 0.03 830.82 -0.03
8 0.9556 5481.04 0.01 830.97 0.01
9 0.9557 5478.02 0.01 831.09 0.02
10 0.9641 5260.17 -0.07 838.47 0.11
11 0.9829 4777.51 0.00 856.54 0.04
12 0.9830 4774.12 -0.06 856.73 0.08
13 1.0349 3500.15 0.06 921.00 -0.05
14 1.0541 3078.89 0.25 949.67 -0.01
15 1.1061 2152.20 0.03 1038.43 0.05
16 1.1224 1942.31 0.01 1068.72 -0.10
17 1.1990 1576.93 ( 0.47) 1221.09 ( -0.09)
18 1.1990 1576.17 -0.33 1221.15 -0.06
19 1.1990 1576.50 -0.04 1221.19 -0.06
20 1.1990 1576.65 0.07 1221.19 -0.10
21 1.2016 1583.21 0.04 1226.47 -0.06
22 1.7884 12951.67 -0.03 1655.32 -0.04
23 1.8432 12293.36 -0.06 1654.93 -0.08
24 1.8810 11589.90 -0.04 1663.16 -0.02
25 1.8811 11586.62 0.09 1663.24 -0.02
26 1.9278 10516.40 -0.01 1685.50 -0.06
27 1.9470 10033.67 -0.02 1699.08 -0.00
28 2.0973 6582.64 -0.07 1890.17 -0.02
29 2.0999 6541.20 -0.10 1894.57 -0.09
30 2.1078 6422.37 0.07 1908.41 0.09
31 2.1108 6379.21 0.10 1913.62 -0.04
32 2.1763 5828.46 0.05 2034.16 0.04
33 2.8124 17010.44 0.06 2520.07 -0.03
34 2.8315 16770.01 -0.06 2522.22 -0.01
35 3.0636 11504.92 0.04 2706.37 0.16
36 3.0637 11504.56 -0.04 2706.27 0.04
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.
15VK173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.080 44.093 44.067 ecceobj 0.059 0.060 0.058 incobj 11.657 11.657 11.657 qmin 40.611 40.611 40.351 qmax 47.107 47.198 47.425 amean 43.764 43.776 43.729 amin 43.426 43.433 43.346 amax 44.123 44.132 44.098 emean 0.052 0.054 0.053 emin 0.036 0.039 0.031 emax 0.068 0.070 0.076 imean 10.247 10.227 10.186 imin 9.717 9.657 9.539 imax 10.781 10.766 10.767 excite_mean 0.185 0.186 0.185 fracstop 1.000 1.000 1.000 cjmean 3.057 3.058 3.057 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 179.6 179.3 179.4 kozaiamp 179.9 180.0 180.0