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: 15VT168 # Created Tue Apr 1 01:10:40 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 54 observations of 54 # Arc: 9.96y # First observation: 2014/11/17 # Last observation: 2024/11/01 # Chi-squared of fit: 2.80 DOF: 102 RMS: 0.04 # Min/Max residuals: -0.14 0.10 # Exact a, adot, b, bdot, g, gdot: 1.507265E-05 2.264930E-02 1.414158E-07 -4.738962E-04 2.341082E-02 -1.079587E-04 # Covariance matrix: 1.2944E-13 -8.1079E-14 -1.5644E-15 1.4295E-15 -1.0328E-14 -3.1233E-13 -8.1079E-14 6.8798E-14 1.4215E-15 -1.3007E-15 1.2348E-14 2.8422E-13 -1.5644E-15 1.4215E-15 5.0810E-14 -9.8310E-15 3.1463E-16 6.2558E-15 1.4295E-15 -1.3007E-15 -9.8310E-15 4.1293E-15 -3.3703E-16 -5.7364E-15 -1.0328E-14 1.2348E-14 3.1463E-16 -3.3703E-16 8.3766E-14 7.4369E-14 -3.1233E-13 2.8422E-13 6.2558E-15 -5.7364E-15 7.4369E-14 1.2537E-12 # lat0 lon0 xBary yBary zBary JD0 -0.089083 47.541791 -0.119540 -0.001379 -0.982225 2456978.797448 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 353.32287 +/- 0.076 Argument of Peri: 191.35169 +/- 0.082 Long of Asc Node: 223.54008 +/- 0.001 Inclination: 1.19963 +/- 0.000 Eccentricity: 0.03667077 +/- 0.0000 Semi-Major Axis: 45.34748175 +/- 0.0024 Time of Perihelion: 2459047.2846 +/- 25.2 Perihelion: 43.68455477 +/- 0.0029 Aphelion: 47.01040873 +/- 0.0031 Period (y) 305.3782 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.40675393 +/- 0.0004 Ecliptic Y 32.32089440 +/- 0.0004 Ecliptic Z -0.06642310 +/- 0.0000 Ecliptic XDOT -0.00196705 +/- 0.0000 Ecliptic YDOT 0.00177373 +/- 0.0000 Ecliptic ZDOT -0.00005530 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.69670532 +/- 0.0004 Geocenter to KBO 42.71533925 +/- 0.0005 # Hcoef: 6.58
The following table shows the complete astrometric record for 15VT168. 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 (15VT168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29667 03 00 24.978 +16 58 48.71 22.9r 15VT168 568 C~2nvz 2014 11 17.40560 03 00 24.450 +16 58 46.63 22.8r 15VT168 568 C~2nvz 2014 11 17.51968 03 00 23.909 +16 58 44.29 22.9r 15VT168 568 C~2nvz 2014 11 19.31306 03 00 15.505 +16 58 08.52 22.9r 15VT168 568 C~2nvz 2014 11 23.41643 02 59 56.452 +16 56 47.53 22.9r 15VT168 568 C~2nvz 2015 08 11.60566 03 10 10.366 +17 37 38.51 23.2w 15VT168 568 C~2nvz 2015 09 06.63576 03 10 04.065 +17 37 02.48 23.2w 15VT168 568 C~2nvz 2015 09 12.52541 03 09 54.306 +17 36 21.09 23.2w 15VT168 568 C~2nvz 2015 10 07.46582 03 08 43.028 +17 31 25.88 23.2w 15VT168 568 C~2nvz 2015 10 08.47003 03 08 39.277 +17 31 10.48 23.2w 15VT168 568 C~2nvz 2015 10 08.52822 03 08 39.054 +17 31 09.64 23.2w 15VT168 568 C~2nvz 2015 11 06.28626 03 06 33.491 +17 22 32.52 22.9r 15VT168 568 C~2nvz 2015 11 06.34963 03 06 33.188 +17 22 31.28 23.0r 15VT168 568 C~2nvz 2015 11 06.42017 03 06 32.841 +17 22 29.98 22.7r 15VT168 568 C~2nvz 2015 11 06.48956 03 06 32.510 +17 22 28.61 22.8r 15VT168 568 C~2nvz 2015 11 07.50772 03 06 27.661 +17 22 08.56 23.0w 15VT168 568 C~2nvz 2015 11 17.27378 03 05 41.114 +17 18 56.14 23.0w 15VT168 568 C~2nvz 2015 11 17.32308 03 05 40.877 +17 18 55.22 23.1w 15VT168 568 C~2nvz 2015 12 06.40182 03 04 14.277 +17 12 55.93 23.1w 15VT168 568 C~2nvz 2015 12 13.33636 03 03 46.095 +17 10 58.52 23.2w 15VT168 568 C~2nvz 2015 12 13.39494 03 03 45.864 +17 10 57.56 23.1w 15VT168 568 C~2nvz 2016 01 01.38920 03 02 43.612 +17 06 37.19 23.2w 15VT168 568 C~2nvz 2016 01 02.35555 03 02 41.145 +17 06 26.72 23.2w 15VT168 568 C~2nvz 2016 01 07.33598 03 02 29.601 +17 05 38.19 23.1w 15VT168 568 C~2nvz 2016 02 03.22261 03 02 05.581 +17 03 55.33 23.2w 15VT168 568 C~2nvz 2016 02 03.22917 03 02 05.581 +17 03 55.48 23.3w 15VT168 568 C~2nvz 2016 02 04.26610 03 02 06.015 +17 03 57.11 23.3w 15VT168 568 C~2nvz 2016 02 10.25584 03 02 10.559 +17 04 15.47 23.2w 15VT168 568 C~2nvz 2016 09 07.55628 03 15 14.195 +17 55 41.19 15VT168 568 C~2nvz 2016 09 26.61685 03 14 31.615 +17 52 47.51 23.2w 15VT168 568 C~2nvz 2016 10 10.43169 03 13 44.160 +17 49 36.99 23.1w 15VT168 568 C~2nvz 2016 10 10.49031 03 13 43.931 +17 49 36.10 23.2w 15VT168 568 C~2nvz 2016 10 27.50259 03 12 31.611 +17 44 46.48 23.2w 15VT168 568 C~2nvz 2016 11 02.60863 03 12 03.218 +17 42 52.65 23.2w 15VT168 568 C~2nvz 2016 11 03.52763 03 11 58.890 +17 42 35.33 23.2w 15VT168 568 C~2nvz 2016 12 28.38756 03 08 05.065 +17 26 51.39 23.2w 15VT168 568 C~2nvz 2016 12 29.35312 03 08 02.245 +17 26 39.88 23.2w 15VT168 568 C~2nvz 2016 12 29.37514 03 08 02.181 +17 26 39.62 23.2w 15VT168 568 C~2nvz 2017 01 01.25010 03 07 54.223 +17 26 07.21 23.2w 15VT168 568 C~2nvz 2017 01 02.36014 03 07 51.309 +17 25 55.36 23.2w 15VT168 568 C~2nvz 2017 01 02.38235 03 07 51.253 +17 25 55.14 23.2w 15VT168 568 C~2nvz 2017 01 26.25322 03 07 14.564 +17 23 24.87 23.3w 15VT168 568 C~2nvz 2017 01 26.27742 03 07 14.552 +17 23 24.87 23.2w 15VT168 568 C~2nvz 2017 09 16.61554 03 20 12.326 +18 12 56.30 15VT168 568 C~2nvz 2017 12 13.37637 03 14 13.199 +17 49 32.12 23.3w 15VT168 568 C~2nvz 2017 12 13.41395 03 14 13.038 +17 49 31.47 23.2w 15VT168 568 C~2nvz 2021 10 03.31268 03 40 39.178 +19 18 30.51 23.0r 15VT168 269 C~8icS 2021 10 03.31525 03 40 39.167 +19 18 30.45 24.0g 15VT168 269 C~8icS 2021 10 03.31812 03 40 39.160 +19 18 30.48 22.5z 15VT168 269 C~8icS 2021 10 03.32137 03 40 39.147 +19 18 30.43 22.7z 15VT168 269 C~8icS 2021 10 03.33261 03 40 39.118 +19 18 30.32 23.2r 15VT168 269 C~8icS 2024 11 01.386190 03 54 56.904 +19 58 19.15 23.3G 15VT168 G37 C~8SY2 2024 11 01.433170 03 54 56.692 +19 58 18.43 15VT168 G37 C~8SY2 2024 11 01.481240 03 54 56.469 +19 58 17.78 15VT168 G37 C~8SY2
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 -0.08
2 0.0003 0.00 -0.02 0.00 0.01
3 0.0006 0.00 0.05 0.00 -0.03
4 0.0055 0.00 0.01 0.00 -0.02
5 0.0168 0.00 0.02 0.00 0.05
6 0.7319 0.00 -0.02 0.00 -0.03
7 0.8031 0.00 -0.10 0.00 -0.01
8 0.8192 0.00 -0.02 0.00 0.01
9 0.8875 0.00 0.01 0.00 0.01
10 0.8903 0.00 -0.05 0.00 0.03
11 0.8904 0.00 -0.04 0.00 0.08
12 0.9692 0.00 0.08 0.00 0.02
13 0.9693 0.00 0.10 0.00 0.01
14 0.9695 0.00 0.01 0.00 0.08
15 0.9697 0.00 0.07 0.00 0.07
16 0.9725 0.00 -0.02 0.00 -0.00
17 0.9993 0.00 0.01 0.00 -0.02
18 0.9994 0.00 0.01 0.00 0.02
19 1.0516 0.00 0.04 0.00 0.01
20 1.0706 0.00 0.01 0.00 0.01
21 1.0708 0.00 0.03 0.00 0.01
22 1.1228 0.00 -0.05 0.00 0.08
23 1.1254 0.00 0.02 0.00 -0.01
24 1.1391 0.00 0.01 0.00 -0.00
25 1.2127 0.00 -0.02 0.00 -0.14
26 1.2127 0.00 -0.05 0.00 0.00
27 1.2155 0.00 -0.03 0.00 -0.07
28 1.2319 0.00 0.02 0.00 -0.02
29 1.8077 0.00 -0.00 0.00 -0.01
30 1.8599 0.00 0.03 0.00 -0.07
31 1.8977 0.00 -0.02 0.00 0.01
32 1.8979 0.00 0.01 0.00 0.02
33 1.9444 0.00 0.03 0.00 0.04
34 1.9612 0.00 -0.09 0.00 -0.04
35 1.9637 0.00 -0.02 0.00 0.01
36 2.1139 0.00 -0.01 0.00 -0.00
37 2.1165 0.00 -0.04 0.00 -0.03
38 2.1166 0.00 -0.02 0.00 -0.03
39 2.1244 0.00 0.02 0.00 0.02
40 2.1275 0.00 0.00 0.00 0.01
41 2.1275 0.00 0.04 0.00 0.03
42 2.1929 0.00 0.01 0.00 -0.03
43 2.1930 0.00 0.02 0.00 0.02
44 2.8318 0.00 0.01 0.00 -0.02
45 3.0721 0.00 0.07 0.00 0.06
46 3.0722 0.00 -0.03 0.00 0.01
47 6.8775 0.00 0.04 0.00 -0.00
48 6.8775 0.00 -0.00 0.00 -0.03
49 6.8775 0.00 0.03 0.00 0.03
50 6.8775 0.00 -0.02 0.00 0.01
51 6.8776 0.00 0.07 0.00 0.02
52 9.9578 0.00 -0.06 0.00 0.02
53 9.9579 0.00 0.00 0.00 -0.04
54 9.9581 0.00 -0.03 0.00 -0.01
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.
15VT168 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.709 45.709 45.709 ecceobj 0.044 0.044 0.044 incobj 1.195 1.195 1.195 qmin 42.791 42.786 42.798 qmax 48.083 48.087 48.081 amean 45.348 45.348 45.348 amin 44.986 44.987 44.987 amax 45.714 45.714 45.717 emean 0.040 0.040 0.040 emin 0.026 0.026 0.026 emax 0.052 0.052 0.052 imean 2.647 2.647 2.647 imin 2.169 2.169 2.169 imax 3.035 3.035 3.035 excite_mean 0.061 0.061 0.061 fracstop 1.000 1.000 1.000 cjmean 3.113 3.113 3.113 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 189.4 189.5 189.3 kozaiamp 180.0 180.0 180.0