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: 15VN168 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 37 observations of 38 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000128 0.013086 -0.000042 -0.004819 0.017658 0.000000 # Chi-squared of fit: 8.55 DOF: 68 RMS: 0.08 # Min/Max residuals: -0.27 0.18 # Exact a, adot, b, bdot, g, gdot: 1.126590E-05 1.337421E-02 -3.515227E-06 -4.926495E-03 1.792947E-02 6.125893E-03 # Covariance matrix: 2.8368E-13 -3.1501E-13 -4.2767E-14 8.2596E-14 -1.6717E-13 -5.7828E-12 -3.1501E-13 4.7794E-13 7.7850E-14 -1.5019E-13 2.6912E-13 1.0519E-11 -4.2767E-14 7.7850E-14 1.6932E-13 -1.1605E-13 4.8952E-14 1.9992E-12 8.2596E-14 -1.5019E-13 -1.1605E-13 1.2230E-13 -9.4951E-14 -3.8556E-12 -1.6717E-13 2.6912E-13 4.8952E-14 -9.4951E-14 2.8075E-13 6.6368E-12 -5.7828E-12 1.0519E-11 1.9992E-12 -3.8556E-12 6.6368E-12 2.7009E-10 # lat0 lon0 xBary yBary zBary JD0 -0.493087 48.966857 -0.094810 -0.008329 -0.984887 2456978.782278 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 56.80539 +/- 0.109 Argument of Peri: 77.99187 +/- 0.039 Long of Asc Node: 227.75137 +/- 0.000 Inclination: 20.24358 +/- 0.001 Eccentricity: 0.39981827 +/- 0.0010 Semi-Major Axis: 61.29363306 +/- 0.0591 Time of Perihelion: 2429313.2796 +/- 35.3 Perihelion: 36.78731888 +/- 0.0711 Aphelion: 85.79994724 +/- 0.1031 Period (y) 479.8785 +/- 0.69 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.18604194 +/- 0.0011 Ecliptic Y 42.87721694 +/- 0.0013 Ecliptic Z -0.48019581 +/- 0.0000 Ecliptic XDOT -0.00093498 +/- 0.0000 Ecliptic YDOT 0.00203648 +/- 0.0000 Ecliptic ZDOT -0.00076020 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 56.75815392 +/- 0.0012 Geocenter to KBO 55.77410896 +/- 0.0016 # Hcoef: 7.39
The following table shows the complete astrometric record for 15VN168. 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 (15VN168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.28150 03 06 36.675 +16 59 11.83 24.3r 15VN168 568 C~2lVn 2014 11 17.39021 03 06 36.261 +16 59 10.07 24.8r 15VN168 568 C~2lVn 2014 11 17.50402 03 06 35.816 +16 59 07.93 25.2r 15VN168 568 C~2lVn 2014 11 23.39737 03 06 14.028 +16 57 22.73 25.3r 15VN168 568 C~2lVn 2015 08 11.59273 03 13 32.280 +17 14 51.57 25.0w 15VN168 568 C~2lVn 2015 09 06.62350 03 13 26.205 +17 12 54.57 25.1w 15VN168 568 C~2lVn 2015 09 12.51312 03 13 18.440 +17 12 03.33 25.5w 15VN168 568 C~2lVn 2015 10 07.43992 03 12 22.632 +17 06 57.57 25.2w 15VN168 568 C~2lVn 2015 10 07.44703 03 12 22.605 +17 06 57.26 25.0w 15VN168 568 C~2lVn 2015 10 08.45165 03 12 19.687 +17 06 42.34 25.2w 15VN168 568 C~2lVn 2015 10 08.51072 03 12 19.510 +17 06 41.40 25.2w 15VN168 568 C~2lVn 2015 11 07.35903 03 10 37.520 +16 58 22.95 24.8r 15VN168 568 C~2lVn 2015 11 07.40112 03 10 37.353 +16 58 22.19 24.8r 15VN168 568 C~2lVn 2015 11 07.44330 03 10 37.201 +16 58 21.49 24.9r 15VN168 568 C~2lVn 2015 11 10.52886 03 10 25.674 +16 57 26.54 25.6w 15VN168 568 C~2lVn 2015 11 17.37547 03 10 00.109 +16 55 24.97 25.1w 15VN168 568 C~2lVn 2015 11 17.42215 03 09 59.935 +16 55 24.16 24.7w 15VN168 568 C~2lVn 2015 12 06.38432 03 08 52.067 +16 50 02.02 24.8w 15VN168 568 C~2lVn 2015 12 13.31874 03 08 29.614 +16 48 14.66 25.2w 15VN168 568 C~2lVn 2015 12 13.37723 03 08 29.423 +16 48 13.66 25.3w 15VN168 568 C~2lVn 2016 01 01.37186 03 07 38.915 +16 44 06.84 25.0w 15VN168 568 C~2lVn 2016 01 07.31862 03 07 27.182 +16 43 06.98 25.7w 15VN168 568 C~2lVn 2016 02 04.29505 03 07 04.012 +16 40 38.22 26.1w 15VN168 568 C~2lVn 2016 02 04.30157 03 07 03.965 +16 40 38.27 25.5w 15VN168 568 C~2lVn 2016 02 10.28486 03 07 06.317 +16 40 36.56 25.2w 15VN168 568 C~2lVn 2016 09 07.55628 03 16 41.515 +17 08 23.99 15VN168 568 C~2lVn 2016 09 26.61279 03 16 07.632 +17 05 02.16 25.5w 15VN168 568 C~2lVn 2016 10 10.43169 03 15 30.516 +17 01 49.47 24.9w 15VN168 568 C~2lVn 2016 10 10.49031 03 15 30.333 +17 01 48.46 25.0w 15VN168 568 C~2lVn 2016 10 27.49100 03 14 34.145 +16 57 13.50 24.3w 15VN168 568 C~2lVn 2016 11 02.59707 03 14 12.133 +16 55 28.85 25.1w 15VN168 568 C~2lVn 2016 11 03.51606 03 14 08.779 +16 55 12.87 25.0w 15VN168 568 C~2lVn 2016 12 24.29598 03 11 15.769 +16 41 44.33 25.5w 15VN168 568 C~2lVn 2017 01 02.39822 03 10 54.370 +16 40 01.85 25.2w 15VN168 568 C~2lVn 2017 01 26.28489 03 10 22.960 +16 37 16.27 24.9w 15VN168 568 C~2lVn 2017 09 15.60092 03 19 45.295 +17 02 46.10 24.4w 15VN168 568 C~2lVn 2017 12 16.38250 03 14 55.691 +16 39 30.95 25.8w 15VN168 568 C~2lVn 2017 12 16.38715 03 14 55.672 +16 39 30.86 25.1w 15VN168 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 0.11 0.00 -0.17
2 0.0003 -6.19 0.13 -0.07 0.02
3 0.0006 -12.92 -0.08 -0.39 -0.01
4 0.0167 -342.36 -0.11 -16.15 0.07
5 0.7319 5992.96 -0.13 -696.42 0.10
6 0.8031 5877.98 -0.04 -786.26 -0.05
7 0.8193 5757.03 0.04 -806.22 0.11
8 0.8875 4904.13 0.02 -888.75 0.14
9 0.8875 4903.68 -0.12 -888.94 -0.04
10 0.8903 4859.36 -0.05 -892.20 -0.08
11 0.8904 4856.66 -0.07 -892.43 -0.14
12 0.9721 3313.37 0.12 -982.09 0.01
13 0.9723 3310.86 0.01 -982.18 0.03
14 0.9724 3308.57 0.13 -982.27 0.05
15 0.9808 3134.47 -0.08 -990.83 0.04
16 0.9996 2748.38 -0.04 -1009.38 0.05
17 0.9997 2745.75 0.00 -1009.49 0.05
18 1.0516 1720.68 0.07 -1057.04 0.10
19 1.0706 1381.24 0.13 -1073.18 0.04
20 1.0708 1378.33 0.02 -1073.40 -0.06
21 1.1228 613.15 -0.10 -1114.17 -0.09
22 1.1390 434.67 -0.07 -1125.95 0.03
23 1.2156 73.84 ( 0.60) -1178.45 ( -0.19)
24 1.2157 73.20 -0.05 -1178.22 0.05
25 1.2320 105.26 0.02 -1189.07 -0.05
26 1.8077 8511.05 0.05 -1783.33 -0.10
27 1.8599 7988.62 0.16 -1851.37 -0.11
28 1.8977 7423.69 0.18 -1897.98 0.06
29 1.8979 7420.89 0.10 -1898.27 -0.06
30 1.9444 6569.93 -0.27 -1951.73 -0.12
31 1.9612 6237.33 -0.02 -1969.41 0.09
32 1.9637 6186.64 0.07 -1972.12 0.01
33 2.1027 3575.23 0.01 -2091.52 -0.05
34 2.1276 3251.44 -0.00 -2107.95 -0.04
35 2.1930 2772.04 0.01 -2146.39 0.01
36 2.8291 10974.77 -0.09 -2793.37 0.08
37 3.0804 6589.09 0.02 -3058.97 0.02
38 3.0804 6588.80 -0.05 -3058.99 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.
15VN168 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 62.022 62.196 61.850 ecceobj 0.404 0.407 0.401 incobj 20.169 20.170 20.169 qmin 36.034 35.939 36.110 qmax 87.965 88.641 87.580 amean 61.429 61.624 61.278 amin 60.729 60.901 60.581 amax 62.319 62.630 62.192 emean 0.396 0.399 0.393 emin 0.381 0.384 0.377 emax 0.412 0.416 0.409 imean 21.548 21.549 21.562 imin 20.936 20.928 20.935 imax 22.271 22.285 22.278 excite_mean 0.540 0.543 0.538 fracstop 1.000 1.000 1.000 cjmean 2.929 2.928 2.930 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 174.0 174.6 174.1 kozaiamp 180.0 180.0 180.0