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: 15VJ168 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.32y # First observation: 2015/08/20 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000071 0.008539 0.000001 0.001486 0.013871 0.000000 # Chi-squared of fit: 6.01 DOF: 64 RMS: 0.07 # Min/Max residuals: -0.21 0.15 # Exact a, adot, b, bdot, g, gdot: 9.675027E-06 8.484612E-03 1.711578E-06 1.482603E-03 1.384662E-02 2.865601E-03 # Covariance matrix: 2.5916E-13 -3.8399E-14 -2.9051E-15 1.7572E-14 1.8917E-13 5.6842E-12 -3.8399E-14 1.5336E-13 -6.2433E-15 2.4983E-14 8.8033E-14 7.9947E-12 -2.9051E-15 -6.2433E-15 9.9060E-14 -6.7156E-14 -7.7879E-15 -6.4709E-13 1.7572E-14 2.4983E-14 -6.7156E-14 8.2768E-14 3.7418E-14 2.7063E-12 1.8917E-13 8.8033E-14 -7.7879E-15 3.7418E-14 2.6568E-13 1.2038E-11 5.6842E-12 7.9947E-12 -6.4709E-13 2.7063E-12 1.2038E-11 8.6723E-10 # lat0 lon0 xBary yBary zBary JD0 -1.090858 53.093757 1.012036 -0.001236 -0.071954 2457255.076589 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 109.71112 +/- 0.430 Argument of Peri: 211.65260 +/- 0.306 Long of Asc Node: 58.53600 +/- 0.001 Inclination: 9.92219 +/- 0.002 Eccentricity: 0.36407714 +/- 0.0015 Semi-Major Axis: 59.42886263 +/- 0.0752 Time of Perihelion: 2406253.7280 +/- 175.0 Perihelion: 37.79217247 +/- 0.0988 Aphelion: 81.06555279 +/- 0.1341 Period (y) 458.1465 +/- 0.87 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.20901300 +/- 0.0016 Ecliptic Y 57.18757470 +/- 0.0021 Ecliptic Z -1.37476906 +/- 0.0001 Ecliptic XDOT -0.00099992 +/- 0.0000 Ecliptic YDOT 0.00145851 +/- 0.0000 Ecliptic ZDOT 0.00028237 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 72.29623449 +/- 0.0020 Geocenter to KBO 72.21978427 +/- 0.0027 # Hcoef: 5.75
The following table shows the complete astrometric record for 15VJ168. 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 (15VJ168) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.57580 03 23 56.786 +17 29 25.37 24.5w 15VJ168 568 C~2lVm 2015 09 07.61675 03 23 48.888 +17 28 55.09 24.7w 15VJ168 568 C~2lVm 2015 10 07.52101 03 22 59.228 +17 25 53.83 24.4w 15VJ168 568 C~2lVm 2015 10 07.58040 03 22 59.078 +17 25 53.40 24.4w 15VJ168 568 C~2lVm 2015 11 06.33360 03 21 37.395 +17 21 02.59 24.1r 15VJ168 568 C~2lVm 2015 11 06.39716 03 21 37.211 +17 21 01.79 24.8r 15VJ168 568 C~2lVm 2015 11 06.40423 03 21 37.165 +17 21 01.89 24.3r 15VJ168 568 C~2lVm 2015 11 06.47375 03 21 36.969 +17 21 01.16 24.1r 15VJ168 568 C~2lVm 2015 11 07.49015 03 21 33.878 +17 20 50.31 24.4w 15VJ168 568 C~2lVm 2015 11 17.47136 03 21 03.195 +17 19 03.39 24.4w 15VJ168 568 C~2lVm 2015 11 17.55969 03 21 02.919 +17 19 02.41 24.4w 15VJ168 568 C~2lVm 2015 12 06.32006 03 20 06.745 +17 15 50.63 24.2w 15VJ168 568 C~2lVm 2015 12 06.45375 03 20 06.366 +17 15 49.33 24.8w 15VJ168 568 C~2lVm 2015 12 31.34139 03 19 04.872 +17 12 31.10 24.6w 15VJ168 568 C~2lVm 2016 01 07.37071 03 18 51.927 +17 11 53.07 24.5w 15VJ168 568 C~2lVm 2016 01 08.23304 03 18 50.492 +17 11 49.08 24.6w 15VJ168 568 C~2lVm 2016 02 05.31732 03 18 25.688 +17 11 03.75 24.6w 15VJ168 568 C~2lVm 2016 02 05.32390 03 18 25.670 +17 11 03.53 24.4w 15VJ168 568 C~2lVm 2016 02 11.27002 03 18 26.184 +17 11 16.24 24.7w 15VJ168 568 C~2lVm 2016 09 07.62568 03 25 41.271 +17 41 05.08 15VJ168 568 C~2lVm 2016 09 26.58416 03 25 14.284 +17 39 28.35 25.0w 15VJ168 568 C~2lVm 2016 10 09.54522 03 24 46.442 +17 37 49.47 24.7w 15VJ168 568 C~2lVm 2016 10 09.61729 03 24 46.264 +17 37 48.94 24.5w 15VJ168 568 C~2lVm 2016 11 02.49681 03 23 40.804 +17 33 59.24 24.5w 15VJ168 568 C~2lVm 2016 11 04.47292 03 23 34.857 +17 33 38.58 24.6w 15VJ168 568 C~2lVm 2016 12 28.46047 03 21 02.971 +17 25 12.12 24.7w 15VJ168 568 C~2lVm 2016 12 29.39076 03 21 01.024 +17 25 06.16 24.4w 15VJ168 568 C~2lVm 2017 01 27.29772 03 20 21.423 +17 23 23.61 24.8w 15VJ168 568 C~2lVm 2017 09 15.58856 03 27 25.185 +17 52 38.80 24.5w 15VJ168 568 C~2lVm 2017 09 17.60038 03 27 22.433 +17 52 29.07 24.7w 15VJ168 568 C~2lVm 2017 09 22.57478 03 27 14.761 +17 52 02.29 24.7w 15VJ168 568 C~2lVm 2017 09 23.57901 03 27 13.076 +17 51 56.29 24.6w 15VJ168 568 C~2lVm 2017 09 23.58734 03 27 13.059 +17 51 56.24 15VJ168 568 C~2lVm 2017 09 24.59522 03 27 11.304 +17 51 50.21 24.6w 15VJ168 568 C~2lVm 2017 12 13.42791 03 23 33.216 +17 39 27.91 23.9w 15VJ168 568 C~2lVm
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 0.00 0.00 -0.00
2 0.0494 -116.98 -0.11 -1.01 0.04
3 0.1313 -850.32 0.05 2.00 -0.02
4 0.1314 -852.51 -0.06 2.12 0.08
5 0.2129 -2057.35 -0.06 16.00 -0.04
6 0.2131 -2060.10 0.08 15.90 -0.21
7 0.2131 -2060.71 -0.21 16.16 0.05
8 0.2133 -2063.61 0.05 16.16 -0.01
9 0.2161 -2109.18 0.10 16.88 -0.01
10 0.2434 -2561.33 0.06 24.96 0.05
11 0.2436 -2565.41 0.05 25.02 0.03
12 0.2950 -3392.42 -0.00 44.48 0.04
13 0.2954 -3398.01 0.11 44.61 -0.01
14 0.3635 -4300.70 -0.16 78.46 -0.06
15 0.3827 -4489.82 0.12 89.32 -0.14
16 0.3851 -4510.73 -0.05 90.75 -0.07
17 0.4620 -4866.06 0.12 138.35 0.15
18 0.4620 -4866.36 -0.18 138.20 -0.00
19 0.4783 -4855.97 0.02 148.59 0.03
20 1.0515 1621.33 -0.01 305.10 0.02
21 1.1034 1223.66 0.01 307.26 0.01
22 1.1389 813.58 0.01 310.63 -0.02
23 1.1391 810.99 0.01 310.75 0.07
24 1.2044 -152.67 0.07 322.42 -0.04
25 1.2098 -240.18 0.03 323.76 -0.04
26 1.3577 -2470.73 0.03 382.43 0.07
27 1.3602 -2499.20 0.04 383.75 0.05
28 1.4393 -3073.55 -0.07 428.89 0.06
29 2.0726 3231.21 0.01 610.59 0.08
30 2.0781 3190.73 0.02 610.82 -0.03
31 2.0917 3077.95 -0.03 611.82 0.02
32 2.0945 3053.15 0.05 611.93 -0.08
33 2.0945 3052.90 0.02 611.94 -0.08
34 2.0972 3027.13 -0.08 612.26 0.02
35 2.3158 -175.23 -0.04 667.80 -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.
15VJ168 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 60.033 60.264 59.810 ecceobj 0.361 0.365 0.356 incobj 9.869 9.868 9.869 qmin 37.131 37.000 37.194 qmax 83.361 83.865 82.618 amean 59.670 59.819 59.414 amin 59.025 59.089 58.793 amax 60.557 60.818 60.307 emean 0.364 0.368 0.360 emin 0.352 0.356 0.349 emax 0.377 0.381 0.372 imean 8.731 8.985 8.746 imin 8.247 8.511 8.249 imax 9.266 9.617 9.229 excite_mean 0.395 0.400 0.391 fracstop 1.000 1.000 1.000 cjmean 3.096 3.092 3.097 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 185.4 184.9 190.2 kozaiamp 180.0 179.9 180.0