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: 15VG168 # Created Tue Apr 1 01:10:39 2025 # Orbit generated from Bernstein formalism # Fitting 46 observations of 46 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000155 0.013714 0.000031 0.003334 0.017830 0.000000 # Chi-squared of fit: 3.33 DOF: 86 RMS: 0.05 # Min/Max residuals: -0.12 0.11 # Exact a, adot, b, bdot, g, gdot: 1.221611E-05 1.406993E-02 3.032635E-06 3.420922E-03 1.814189E-02 7.347632E-03 # Covariance matrix: 2.2588E-13 -2.4041E-13 2.0792E-14 -4.0457E-14 -1.2902E-13 -4.1106E-12 -2.4041E-13 3.6385E-13 -3.8752E-14 7.5544E-14 2.3160E-13 7.6743E-12 2.0792E-14 -3.8752E-14 1.4032E-13 -8.2047E-14 -2.8439E-14 -9.5270E-13 -4.0457E-14 7.5544E-14 -8.2047E-14 6.9786E-14 5.4254E-14 1.8599E-12 -1.2902E-13 2.3160E-13 -2.8439E-14 5.4254E-14 2.4613E-13 5.5221E-12 -4.1106E-12 7.6743E-12 -9.5270E-13 1.8599E-12 5.5221E-12 1.8891E-10 # lat0 lon0 xBary yBary zBary JD0 -2.059639 48.203540 -0.107747 -0.035204 -0.982961 2456978.772168 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 47.47714 +/- 0.083 Argument of Peri: 249.57317 +/- 0.023 Long of Asc Node: 56.58147 +/- 0.000 Inclination: 13.80892 +/- 0.001 Eccentricity: 0.46814391 +/- 0.0008 Semi-Major Axis: 64.90225878 +/- 0.0637 Time of Perihelion: 2431783.8646 +/- 23.7 Perihelion: 34.51866163 +/- 0.0634 Aphelion: 95.28585592 +/- 0.1077 Period (y) 522.8751 +/- 0.77 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.28576697 +/- 0.0010 Ecliptic Y 41.87377622 +/- 0.0011 Ecliptic Z -1.98088183 +/- 0.0001 Ecliptic XDOT -0.00083633 +/- 0.0000 Ecliptic YDOT 0.00225018 +/- 0.0000 Ecliptic ZDOT 0.00047618 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 56.10316788 +/- 0.0011 Geocenter to KBO 55.12105169 +/- 0.0015 # Hcoef: 5.58
The following table shows the complete astrometric record for 15VG168. 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 (15VG168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27139 03 05 20.520 +15 16 15.44 23.0r 15VG168 568 C~2lVm 2014 11 17.38009 03 05 20.103 +15 16 14.00 22.8r 15VG168 568 C~2lVm 2014 11 17.49387 03 05 19.658 +15 16 12.51 23.0r 15VG168 568 C~2lVm 2014 11 19.28114 03 05 12.887 +15 15 48.62 22.8r 15VG168 568 C~2lVm 2014 11 23.38468 03 04 57.433 +15 14 54.91 22.9r 15VG168 568 C~2lVm 2015 08 11.61007 03 12 00.647 +15 54 21.26 23.4w 15VG168 568 C~2lVm 2015 09 06.62757 03 11 52.073 +15 53 44.40 23.4w 15VG168 568 C~2lVm 2015 09 12.51723 03 11 43.739 +15 53 11.39 23.6w 15VG168 568 C~2lVm 2015 10 07.45292 03 10 45.488 +15 49 28.19 23.4w 15VG168 568 C~2lVm 2015 10 08.45753 03 10 42.462 +15 49 16.87 23.3w 15VG168 568 C~2lVm 2015 10 08.51654 03 10 42.279 +15 49 16.05 23.0w 15VG168 568 C~2lVm 2015 11 07.36426 03 08 57.590 +15 42 52.08 22.8r 15VG168 568 C~2lVm 2015 11 07.40638 03 08 57.427 +15 42 51.47 22.9r 15VG168 568 C~2lVm 2015 11 07.44859 03 08 57.265 +15 42 50.93 23.0r 15VG168 568 C~2lVm 2015 11 10.53471 03 08 45.485 +15 42 09.13 23.3w 15VG168 568 C~2lVm 2015 11 17.38127 03 08 19.365 +15 40 37.32 23.0w 15VG168 568 C~2lVm 2015 11 17.42797 03 08 19.185 +15 40 36.73 23.1w 15VG168 568 C~2lVm 2015 12 06.39016 03 07 09.938 +15 36 43.02 23.4w 15VG168 568 C~2lVm 2015 12 13.32462 03 06 47.027 +15 35 30.14 23.2w 15VG168 568 C~2lVm 2015 12 13.38310 03 06 46.840 +15 35 29.56 23.4w 15VG168 568 C~2lVm 2016 01 07.32440 03 05 43.246 +15 32 34.92 23.2w 15VG168 568 C~2lVm 2016 02 04.30735 03 05 18.901 +15 32 44.36 23.5w 15VG168 568 C~2lVm 2016 02 04.31413 03 05 18.897 +15 32 44.21 23.7w 15VG168 568 C~2lVm 2016 02 04.32117 03 05 18.903 +15 32 44.28 23.5w 15VG168 568 C~2lVm 2016 02 04.32803 03 05 18.899 +15 32 44.43 23.6w 15VG168 568 C~2lVm 2016 02 05.26985 03 05 19.074 +15 32 48.80 23.5w 15VG168 568 C~2lVm 2016 09 07.55050 03 14 43.740 +16 16 56.81 15VG168 568 C~2lVm 2016 09 26.61279 03 14 07.865 +16 14 43.07 15VG168 568 C~2lVm 2016 10 10.42589 03 13 29.357 +16 12 21.48 23.4w 15VG168 568 C~2lVm 2016 10 10.48430 03 13 29.172 +16 12 20.88 23.2w 15VG168 568 C~2lVm 2016 10 10.50790 03 13 29.096 +16 12 20.59 23.2w 15VG168 568 C~2lVm 2016 10 27.50838 03 12 31.279 +16 08 51.81 23.2w 15VG168 568 C~2lVm 2016 10 27.51417 03 12 31.258 +16 08 51.78 23.2w 15VG168 568 C~2lVm 2016 11 03.53341 03 12 05.250 +16 07 19.47 23.1w 15VG168 568 C~2lVm 2016 12 28.39306 03 08 58.273 +15 57 10.67 23.9w 15VG168 568 C~2lVm 2016 12 28.40104 03 08 58.256 +15 57 10.56 23.7w 15VG168 568 C~2lVm 2016 12 29.36878 03 08 55.936 +15 57 04.40 23.3w 15VG168 568 C~2lVm 2017 01 01.25561 03 08 49.340 +15 56 47.55 23.3w 15VG168 568 C~2lVm 2017 01 01.26608 03 08 49.308 +15 56 47.47 23.3w 15VG168 568 C~2lVm 2017 01 02.36563 03 08 46.922 +15 56 41.60 23.4w 15VG168 568 C~2lVm 2017 01 02.37586 03 08 46.894 +15 56 41.50 23.5w 15VG168 568 C~2lVm 2017 01 26.26424 03 08 14.555 +15 55 56.65 23.3w 15VG168 568 C~2lVm 2017 09 15.60092 03 17 23.868 +16 39 06.34 23.5w 15VG168 568 C~2lVm 2017 09 22.58685 03 17 10.249 +16 38 17.59 15VG168 568 C~2lVm 2017 12 16.38250 03 12 25.897 +16 22 08.84 23.2w 15VG168 568 C~2lVm 2017 12 16.38715 03 12 25.883 +16 22 08.74 23.2w 15VG168 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 0.01 0.00 -0.01
2 0.0003 -6.20 0.05 0.27 -0.02
3 0.0006 -12.80 -0.00 0.61 0.05
4 0.0055 -113.57 0.04 4.58 0.01
5 0.0167 -343.36 -0.06 14.46 0.06
6 0.7319 6186.14 -0.02 633.27 0.06
7 0.8032 6056.98 -0.11 630.81 0.09
8 0.8193 5932.19 -0.02 631.17 -0.02
9 0.8876 5061.98 0.06 641.51 -0.02
10 0.8903 5016.85 -0.01 642.34 0.05
11 0.8905 5014.08 -0.06 642.26 -0.09
12 0.9722 3454.61 0.07 680.18 -0.08
13 0.9723 3452.18 0.05 680.23 -0.12
14 0.9724 3449.78 0.08 680.34 -0.10
15 0.9809 3274.67 -0.02 686.18 -0.00
16 0.9996 2886.62 -0.03 700.11 0.01
17 0.9997 2883.96 -0.01 700.25 0.03
18 1.0517 1857.74 0.06 747.53 0.01
19 1.0706 1519.39 -0.01 767.78 -0.01
20 1.0708 1516.63 0.02 767.96 -0.02
21 1.1391 584.98 0.02 851.59 0.04
22 1.2157 249.28 -0.01 957.28 0.08
23 1.2157 249.18 -0.12 957.15 -0.08
24 1.2157 249.28 -0.03 957.20 -0.06
25 1.2158 249.27 -0.07 957.36 0.07
26 1.2183 252.90 0.03 960.86 -0.04
27 1.8077 8815.92 0.11 1316.27 0.03
28 1.8599 8281.43 0.06 1323.84 0.00
29 1.8978 7708.26 -0.03 1334.31 -0.02
30 1.8979 7705.52 -0.02 1334.44 0.04
31 1.8980 7704.39 -0.04 1334.45 0.02
32 1.9445 6844.86 -0.02 1354.75 -0.03
33 1.9445 6844.56 0.00 1354.80 0.02
34 1.9638 6458.36 -0.00 1365.83 0.02
35 2.1140 3696.67 -0.01 1504.19 0.03
36 2.1140 3696.40 0.02 1504.15 -0.03
37 2.1166 3662.51 0.02 1507.28 -0.05
38 2.1245 3566.34 0.09 1516.82 0.02
39 2.1246 3565.88 -0.03 1516.87 0.03
40 2.1276 3531.15 0.05 1520.54 0.03
41 2.1276 3530.73 -0.04 1520.55 0.01
42 2.1930 3069.49 -0.00 1603.88 0.01
43 2.8291 11393.96 -0.03 1995.94 -0.03
44 2.8482 11191.68 -0.03 1999.92 -0.05
45 3.0804 6982.99 0.00 2144.10 0.06
46 3.0804 6982.76 -0.00 2144.06 0.00
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.
15VG168 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 65.797 65.983 65.613 ecceobj 0.473 0.475 0.471 incobj 13.769 13.769 13.769 qmin 33.824 33.314 33.880 qmax 99.053 98.978 98.568 amean 65.346 64.758 65.177 amin 64.028 62.511 64.024 amax 66.840 66.797 66.763 emean 0.464 0.469 0.460 emin 0.443 0.447 0.441 emax 0.482 0.486 0.479 imean 13.788 12.790 13.792 imin 12.674 11.726 12.659 imax 14.877 13.987 14.909 excite_mean 0.521 0.519 0.518 fracstop 1.000 1.000 1.000 cjmean 2.996 2.991 2.999 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 189.5 201.8 194.9 kozaiamp 179.9 180.0 180.0