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: 15VS167 # Created Tue Apr 1 01:10:39 2025 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000013 0.031848 -0.000004 -0.003643 0.025874 0.000000 # Chi-squared of fit: 9.62 DOF: 60 RMS: 0.10 # Min/Max residuals: -0.24 0.37 # Exact a, adot, b, bdot, g, gdot: 1.958656E-05 3.209501E-02 -2.210882E-06 -3.673198E-03 2.616878E-02 1.168227E-03 # Covariance matrix: 3.1394E-13 -3.6774E-13 -1.4029E-14 2.9121E-14 -1.1520E-13 -2.8190E-12 -3.6774E-13 5.9270E-13 2.6894E-14 -5.5790E-14 2.1878E-13 5.4012E-12 -1.4029E-14 2.6894E-14 1.7408E-13 -9.9886E-14 1.1119E-14 2.7967E-13 2.9121E-14 -5.5790E-14 -9.9886E-14 7.9780E-14 -2.5879E-14 -5.8321E-13 -1.1520E-13 2.1878E-13 1.1119E-14 -2.5879E-14 2.4882E-13 2.4471E-12 -2.8190E-12 5.4012E-12 2.7967E-13 -5.8321E-13 2.4471E-12 5.6400E-11 # lat0 lon0 xBary yBary zBary JD0 -2.907085 47.976951 -0.113534 -0.049695 -0.981670 2456978.880868 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 1.69939 +/- 0.010 Argument of Peri: 197.29367 +/- 0.039 Long of Asc Node: 204.77654 +/- 0.002 Inclination: 7.11418 +/- 0.000 Eccentricity: 0.51564408 +/- 0.0001 Semi-Major Axis: 80.75751065 +/- 0.0142 Time of Perihelion: 2455719.1959 +/- 7.7 Perihelion: 39.11537837 +/- 0.0098 Aphelion: 122.39964293 +/- 0.0226 Period (y) 725.7426 +/- 0.19 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.11875067 +/- 0.0005 Ecliptic Y 29.15910094 +/- 0.0005 Ecliptic Z -1.93815898 +/- 0.0000 Ecliptic XDOT -0.00243009 +/- 0.0000 Ecliptic YDOT 0.00231909 +/- 0.0000 Ecliptic ZDOT -0.00038990 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.19437159 +/- 0.0005 Geocenter to KBO 38.21347440 +/- 0.0007 # Hcoef: 8.99
The following table shows the complete astrometric record for 15VS167. 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 (15VS167) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.38009 03 05 24.312 +14 23 38.14 24.3r 15VS167 568 C~2lVj 2014 11 17.49387 03 05 23.738 +14 23 35.65 24.9r 15VS167 568 C~2lVj 2014 11 19.28114 03 05 14.969 +14 22 56.49 24.8r 15VS167 568 C~2lVj 2014 11 23.38468 03 04 54.947 +14 21 28.45 24.6r 15VS167 568 C~2lVj 2015 08 11.60150 03 17 16.821 +15 06 49.06 25.8w 15VS167 568 C~2lVj 2015 09 06.61481 03 17 21.835 +15 04 11.63 25.2w 15VS167 568 C~2lVj 2015 10 07.42821 03 16 05.739 +14 56 10.16 25.1w 15VS167 568 C~2lVj 2015 11 07.34843 03 13 47.788 +14 45 05.26 24.9r 15VS167 568 C~2lVj 2015 11 07.39058 03 13 47.584 +14 45 04.09 25.0r 15VS167 568 C~2lVk 2015 11 07.43274 03 13 47.371 +14 45 03.18 24.9r 15VS167 568 C~2lVk 2015 11 10.51713 03 13 32.021 +14 43 54.78 24.7w 15VS167 568 C~2lVk 2015 11 10.54648 03 13 31.899 +14 43 54.12 25.0w 15VS167 568 C~2lVk 2015 11 17.36382 03 12 57.873 +14 41 25.45 24.9w 15VS167 568 C~2lVk 2015 11 17.41043 03 12 57.638 +14 41 24.55 24.9w 15VS167 568 C~2lVk 2015 12 06.37266 03 11 27.008 +14 35 06.94 25.1w 15VS167 568 C~2lVk 2015 12 13.30706 03 10 57.207 +14 33 09.60 25.2w 15VS167 568 C~2lVk 2015 12 13.36559 03 10 56.977 +14 33 08.57 25.1w 15VS167 568 C~2lVk 2016 01 01.36029 03 09 51.157 +14 29 08.02 25.3w 15VS167 568 C~2lVk 2016 01 07.30705 03 09 36.441 +14 28 20.99 24.5w 15VS167 568 C~2lVk 2016 02 04.34036 03 09 13.273 +14 28 04.49 25.8w 15VS167 568 C~2lVk 2016 02 11.22942 03 09 20.045 +14 28 52.89 24.8w 15VS167 568 C~2lVk 2016 09 07.56785 03 24 45.548 +15 19 45.79 24.8w 15VS167 568 C~2lVk 2016 09 27.50655 03 24 05.379 +15 15 06.68 25.1w 15VS167 568 C~2lVk 2016 10 10.44325 03 23 21.688 +15 11 10.63 25.3w 15VS167 568 C~2lVk 2016 10 10.50202 03 23 21.449 +15 11 09.52 25.4w 15VS167 568 C~2lVk 2016 10 10.51973 03 23 21.388 +15 11 09.11 25.3w 15VS167 568 C~2lVk 2016 11 02.50837 03 21 39.634 +15 03 08.94 25.0w 15VS167 568 C~2lVk 2016 11 04.48449 03 21 29.981 +15 02 26.22 25.3w 15VS167 568 C~2lVk 2016 12 24.31885 03 17 41.470 +14 47 20.69 25.4w 15VS167 568 C~2lVk 2017 01 02.42106 03 17 13.073 +14 45 48.08 25.2w 15VS167 568 C~2lVk 2017 09 15.57020 03 31 59.968 +15 33 08.73 25.6w 15VS167 568 C~2lVk 2017 09 21.61548 03 31 48.201 +15 31 45.92 25.1w 15VS167 568 C~2lVk 2017 12 16.34460 03 25 41.069 +15 05 05.04 25.3w 15VS167 568 C~2lVk
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 -0.04 0.00 -0.00
2 0.0003 -8.70 -0.06 -0.10 0.03
3 0.0052 -141.97 0.09 -2.71 -0.06
4 0.0164 -445.90 -0.18 -7.27 -0.04
5 0.7316 10660.70 0.05 -280.75 0.12
6 0.8028 10689.59 0.01 -451.94 0.14
7 0.8872 9496.43 -0.05 -626.84 -0.04
8 0.9719 7388.01 0.02 -738.31 0.07
9 0.9720 7384.84 0.07 -738.65 -0.19
10 0.9721 7381.62 0.08 -738.71 -0.16
11 0.9805 7148.48 -0.00 -745.36 -0.13
12 0.9806 7146.60 0.37 -745.52 -0.24
13 0.9993 6630.59 -0.01 -757.16 -0.02
14 0.9994 6627.06 0.04 -757.11 0.07
15 1.0513 5257.51 -0.07 -768.68 0.04
16 1.0703 4808.98 -0.04 -765.38 0.16
17 1.0705 4805.48 0.16 -765.47 0.00
18 1.1225 3819.81 -0.11 -739.32 0.01
19 1.1387 3601.26 0.02 -726.80 0.02
20 1.2155 3272.76 0.01 -651.56 0.14
21 1.2344 3380.58 0.04 -631.61 0.06
22 1.8075 17166.00 -0.14 -1209.75 -0.00
23 1.8621 16528.71 -0.08 -1332.06 0.05
24 1.8975 15852.89 -0.04 -1398.94 0.02
25 1.8977 15849.24 -0.15 -1399.13 0.09
26 1.8977 15848.28 -0.05 -1399.30 -0.01
27 1.9607 14292.64 -0.05 -1485.17 0.01
28 1.9661 14145.83 0.04 -1490.40 -0.03
29 2.1025 10699.50 -0.09 -1503.57 0.05
30 2.1274 10276.66 0.00 -1484.86 0.02
31 2.8287 23510.43 0.16 -2008.87 -0.06
32 2.8453 23322.86 0.03 -2047.44 -0.09
33 3.0800 17724.39 -0.01 -2269.55 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.
15VS167 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 82.213 82.264 82.163 ecceobj 0.524 0.524 0.524 incobj 7.090 7.090 7.090 qmin 38.174 38.215 38.156 qmax 125.611 125.409 125.566 amean 80.550 80.477 80.541 amin 79.371 79.259 79.423 amax 82.293 82.264 82.268 emean 0.515 0.514 0.515 emin 0.505 0.504 0.505 emax 0.527 0.525 0.526 imean 7.267 7.339 7.282 imin 6.891 6.939 6.921 imax 7.600 7.694 7.652 excite_mean 0.530 0.530 0.530 fracstop 1.000 1.000 1.000 cjmean 3.155 3.155 3.155 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 181.4 184.5 181.7 kozaiamp 180.0 179.9 180.0