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: 15VO168 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 41 observations of 41 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000229 0.028622 0.000012 -0.002153 0.025781 0.000000 # Chi-squared of fit: 7.85 DOF: 76 RMS: 0.08 # Min/Max residuals: -0.26 0.19 # Exact a, adot, b, bdot, g, gdot: 1.710026E-05 2.841983E-02 -1.426640E-06 -2.141677E-03 2.574682E-02 -3.924057E-03 # Covariance matrix: 2.4861E-13 -2.8281E-13 -6.6981E-15 1.4459E-14 -1.0632E-13 -2.4278E-12 -2.8281E-13 4.4874E-13 1.2863E-14 -2.7544E-14 1.8353E-13 4.6324E-12 -6.6981E-15 1.2863E-14 1.4128E-13 -7.9903E-14 5.7069E-15 1.5298E-13 1.4459E-14 -2.7544E-14 -7.9903E-14 6.1395E-14 -1.3356E-14 -3.2785E-13 -1.0632E-13 1.8353E-13 5.7069E-15 -1.3356E-14 1.8684E-13 2.2073E-12 -2.4278E-12 4.6324E-12 1.5298E-13 -3.2785E-13 2.2073E-12 5.5128E-11 # lat0 lon0 xBary yBary zBary JD0 -1.476244 47.953689 -0.112123 -0.025181 -0.982780 2456978.777218 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 340.75007 +/- 0.026 Argument of Peri: 234.10137 +/- 0.053 Long of Asc Node: 209.64043 +/- 0.002 Inclination: 4.53434 +/- 0.000 Eccentricity: 0.29122706 +/- 0.0002 Semi-Major Axis: 53.81980445 +/- 0.0077 Time of Perihelion: 2464681.9900 +/- 10.2 Perihelion: 38.14602124 +/- 0.0114 Aphelion: 69.49358766 +/- 0.0141 Period (y) 394.8402 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.57555141 +/- 0.0004 Ecliptic Y 29.63964269 +/- 0.0005 Ecliptic Z -1.00067670 +/- 0.0000 Ecliptic XDOT -0.00253179 +/- 0.0000 Ecliptic YDOT 0.00170490 +/- 0.0000 Ecliptic ZDOT -0.00021681 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.82172404 +/- 0.0005 Geocenter to KBO 38.83974629 +/- 0.0007 # Hcoef: 8.04
The following table shows the complete astrometric record for 15VO168. 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 (15VO168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27644 03 03 40.651 +15 45 46.23 23.9r 15VO168 568 C~2lVn 2014 11 17.38513 03 03 40.095 +15 45 43.83 23.5r 15VO168 568 C~2lVn 2014 11 17.49897 03 03 39.508 +15 45 41.31 24.2r 15VO168 568 C~2lVn 2014 11 19.28749 03 03 30.591 +15 45 02.53 24.7r 15VO168 568 C~2lVn 2014 11 23.39103 03 03 10.280 +15 43 34.86 24.5r 15VO168 568 C~2lVn 2015 08 11.59273 03 14 55.649 +16 28 03.84 24.5w 15VO168 568 C~2lVn 2015 09 06.62350 03 14 55.916 +16 26 30.57 24.0w 15VO168 568 C~2lVn 2015 09 12.51312 03 14 46.767 +16 25 34.56 24.1w 15VO168 568 C~2lVn 2015 10 07.43992 03 13 34.862 +16 19 33.90 24.3w 15VO168 568 C~2lVn 2015 10 07.44703 03 13 34.824 +16 19 33.69 24.2w 15VO168 568 C~2lVn 2015 10 08.45165 03 13 30.937 +16 19 15.67 23.9w 15VO168 568 C~2lVn 2015 10 08.51072 03 13 30.698 +16 19 14.60 24.2w 15VO168 568 C~2lVn 2015 11 07.35903 03 11 13.010 +16 09 04.46 23.8r 15VO168 568 C~2lVn 2015 11 07.40112 03 11 12.792 +16 09 03.54 24.5r 15VO168 568 C~2lVn 2015 11 07.44330 03 11 12.579 +16 09 02.59 23.9r 15VO168 568 C~2lVn 2015 11 10.52886 03 10 56.887 +16 07 55.68 24.5w 15VO168 568 C~2lVn 2015 11 17.37547 03 10 22.057 +16 05 28.17 24.3w 15VO168 568 C~2lVn 2015 12 06.38432 03 08 49.549 +15 59 04.78 24.0w 15VO168 568 C~2lVn 2015 12 13.31874 03 08 19.235 +15 57 02.03 24.5w 15VO168 568 C~2lVn 2015 12 13.37723 03 08 18.977 +15 57 01.06 24.1w 15VO168 568 C~2lVn 2016 01 01.37186 03 07 11.931 +15 52 37.96 24.3w 15VO168 568 C~2lVn 2016 01 07.31862 03 06 56.839 +15 51 41.89 24.5w 15VO168 568 C~2lVn 2016 02 04.29505 03 06 31.995 +15 50 34.92 24.2w 15VO168 568 C~2lVn 2016 02 04.30157 03 06 31.999 +15 50 34.97 24.1w 15VO168 568 C~2lVn 2016 02 10.28486 03 06 37.190 +15 51 04.45 24.2w 15VO168 568 C~2lVn 2016 09 07.56206 03 21 34.130 +16 44 29.45 24.8w 15VO168 568 C~2lVn 2016 09 26.59656 03 20 52.971 +16 40 47.28 23.8w 15VO168 568 C~2lVn 2016 09 26.62090 03 20 52.894 +16 40 46.94 23.9w 15VO168 568 C~2lVn 2016 10 10.40230 03 20 04.439 +16 37 01.23 23.9w 15VO168 568 C~2lVn 2016 10 10.46065 03 20 04.201 +16 37 00.19 23.9w 15VO168 568 C~2lVn 2016 10 27.49679 03 18 48.281 +16 31 29.14 24.2w 15VO168 568 C~2lVn 2016 11 02.51995 03 18 18.607 +16 29 23.69 24.2w 15VO168 568 C~2lVn 2016 11 02.60285 03 18 18.196 +16 29 22.13 24.0w 15VO168 568 C~2lVn 2016 11 03.52184 03 18 13.578 +16 29 02.69 24.7w 15VO168 568 C~2lVn 2016 11 04.39506 03 18 09.192 +16 28 44.30 23.9w 15VO168 568 C~2lVn 2017 01 02.40371 03 13 46.366 +16 11 27.42 24.6w 15VO168 568 C~2lVn 2017 01 26.29235 03 13 06.291 +16 09 20.31 24.1w 15VO168 568 C~2lVn 2017 01 26.32220 03 13 06.276 +16 09 20.32 23.8w 15VO168 568 C~2lVn 2017 09 21.62755 03 27 53.395 +16 59 38.50 24.4w 15VO168 568 C~2lVn 2017 09 22.56874 03 27 51.100 +16 59 26.74 24.3w 15VO168 568 C~2lVn 2017 12 16.37785 03 21 32.534 +16 33 38.97 23.9w 15VO168 568 C~2lVn
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 0.07 0.00 0.02
2 0.0003 -8.38 0.03 -0.08 -0.02
3 0.0006 -17.22 -0.07 -0.16 -0.02
4 0.0055 -151.65 0.04 -1.78 -0.03
5 0.0167 -457.71 0.05 -4.72 -0.03
6 0.7319 10058.76 0.03 -186.32 -0.04
7 0.8031 10037.83 0.16 -277.41 -0.22
8 0.8193 9895.75 -0.10 -296.73 0.09
9 0.8875 8800.14 0.14 -370.76 0.01
10 0.8875 8799.56 -0.02 -370.81 -0.03
11 0.8903 8740.72 -0.05 -373.34 0.03
12 0.8904 8737.11 -0.10 -373.46 0.04
13 0.9722 6660.35 0.09 -432.49 -0.02
14 0.9723 6657.07 0.07 -432.53 -0.03
15 0.9724 6653.86 0.12 -432.62 -0.08
16 0.9808 6417.86 -0.08 -436.42 0.01
17 0.9996 5894.28 -0.05 -443.59 0.04
18 1.0516 4505.80 -0.07 -452.62 0.04
19 1.0706 4051.53 -0.01 -452.20 -0.00
20 1.0708 4047.68 -0.11 -452.12 0.05
21 1.1228 3045.14 0.05 -442.07 -0.05
22 1.1391 2820.30 -0.03 -436.58 0.06
23 1.2157 2457.10 -0.13 -403.01 0.06
24 1.2157 2457.17 -0.11 -402.98 0.08
25 1.2321 2537.29 -0.08 -395.11 0.06
26 1.8078 15869.41 -0.01 -723.76 0.00
27 1.8599 15237.35 -0.03 -787.14 -0.05
28 1.8599 15236.18 -0.06 -787.18 -0.02
29 1.8977 14501.41 -0.03 -826.28 0.01
30 1.8978 14497.81 -0.03 -826.40 0.01
31 1.9445 13352.64 -0.02 -864.14 0.10
32 1.9610 12906.13 -0.00 -874.55 -0.05
33 1.9612 12900.00 0.19 -874.52 0.10
34 1.9637 12830.53 -0.02 -876.03 0.00
35 1.9661 12764.58 -0.02 -877.39 -0.01
36 2.1277 8830.93 0.08 -884.23 0.03
37 2.1931 8239.55 0.03 -853.39 -0.04
38 2.1931 8239.34 0.06 -853.33 -0.02
39 2.8456 21412.43 -0.26 -1218.67 0.05
40 2.8482 21377.24 0.10 -1221.90 0.01
41 3.0804 15679.85 0.15 -1348.53 -0.16
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.
15VO168 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 54.307 54.325 54.289 ecceobj 0.295 0.295 0.294 incobj 4.517 4.517 4.517 qmin 37.414 37.432 37.430 qmax 70.804 70.736 70.853 amean 53.681 53.690 53.711 amin 53.118 53.116 53.122 amax 54.391 54.354 54.408 emean 0.289 0.289 0.290 emin 0.279 0.279 0.278 emax 0.302 0.302 0.302 imean 5.210 5.220 5.219 imin 4.784 4.802 4.813 imax 5.700 5.711 5.704 excite_mean 0.303 0.303 0.304 fracstop 1.000 1.000 1.000 cjmean 3.106 3.106 3.106 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 186.6 186.5 186.6 kozaiamp 180.0 180.0 180.0