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: 15VC168 # Created Sat Apr 20 01:17:41 2024 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 3.07y # First observation: 2014/11/17 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000414 0.034179 0.000040 -0.004386 0.029568 0.000000 # Chi-squared of fit: 7.15 DOF: 60 RMS: 0.08 # Min/Max residuals: -0.35 0.22 # Exact a, adot, b, bdot, g, gdot: 1.836177E-05 3.369735E-02 -2.693662E-06 -4.332690E-03 2.951553E-02 -6.500094E-03 # Covariance matrix: 2.5382E-13 -2.8746E-13 -1.0850E-14 2.4709E-14 -1.0339E-13 -2.0248E-12 -2.8746E-13 4.7941E-13 2.2211E-14 -5.0377E-14 2.0121E-13 4.1318E-12 -1.0850E-14 2.2211E-14 1.5550E-13 -8.7299E-14 1.0151E-14 2.2126E-13 2.4709E-14 -5.0377E-14 -8.7299E-14 7.1224E-14 -2.5600E-14 -5.0280E-13 -1.0339E-13 2.0121E-13 1.0151E-14 -2.5600E-14 2.2469E-13 2.0526E-12 -2.0248E-12 4.1318E-12 2.2126E-13 -5.0280E-13 2.0526E-12 4.1221E-11 # lat0 lon0 xBary yBary zBary JD0 -2.586772 47.894489 -0.113051 -0.044219 -0.982001 2456978.772168 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 329.94021 +/- 0.013 Argument of Peri: 251.47480 +/- 0.029 Long of Asc Node: 209.19230 +/- 0.001 Inclination: 7.72192 +/- 0.000 Eccentricity: 0.28104678 +/- 0.0002 Semi-Major Axis: 44.33919963 +/- 0.0059 Time of Perihelion: 2465975.0846 +/- 3.6 Perihelion: 31.87781023 +/- 0.0089 Aphelion: 56.80058903 +/- 0.0109 Period (y) 295.2500 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 23.26573905 +/- 0.0004 Ecliptic Y 25.91728322 +/- 0.0004 Ecliptic Z -1.52920933 +/- 0.0000 Ecliptic XDOT -0.00273933 +/- 0.0000 Ecliptic YDOT 0.00163051 +/- 0.0000 Ecliptic ZDOT -0.00037417 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.86170771 +/- 0.0004 Geocenter to KBO 33.88046629 +/- 0.0005 # Hcoef: 9.17
The following table shows the complete astrometric record for 15VC168. 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 (15VC168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27139 03 04 42.815 +14 40 45.07 24.6r 15VC168 568 C~2lVl 2014 11 17.38009 03 04 42.203 +14 40 42.26 24.6r 15VC168 568 C~2lVl 2014 11 17.49387 03 04 41.517 +14 40 39.24 24.1r 15VC168 568 C~2lVl 2014 11 19.28114 03 04 31.474 +14 39 54.13 24.4r 15VC168 568 C~2lVl 2014 11 23.38468 03 04 08.535 +14 38 12.26 24.3r 15VC168 568 C~2lVl 2015 08 11.60150 03 17 45.953 +15 26 56.15 24.8w 15VC168 568 C~2lVl 2015 09 06.61481 03 17 50.063 +15 24 02.30 24.8w 15VC168 568 C~2lVl 2015 09 12.50491 03 17 40.483 +15 22 43.60 24.8w 15VC168 568 C~2lVl 2015 10 07.42821 03 16 21.558 +15 14 57.83 25.1w 15VC168 568 C~2lVl 2015 11 07.34843 03 13 42.246 +15 02 14.91 24.4r 15VC168 568 C~2lVl 2015 11 07.39058 03 13 42.002 +15 02 13.85 24.5r 15VC168 568 C~2lVl 2015 11 07.43274 03 13 41.747 +15 02 12.66 24.7r 15VC168 568 C~2lVl 2015 11 17.36382 03 12 44.624 +14 58 00.30 24.5w 15VC168 568 C~2lVl 2015 11 17.41043 03 12 44.355 +14 57 59.18 24.5w 15VC168 568 C~2lVl 2015 12 06.37266 03 10 59.699 +14 50 38.02 24.8w 15VC168 568 C~2lVl 2015 12 13.30706 03 10 25.231 +14 48 19.41 24.8w 15VC168 568 C~2lVl 2015 12 13.36559 03 10 24.965 +14 48 18.35 24.9w 15VC168 568 C~2lVl 2016 01 01.36029 03 09 08.729 +14 43 29.50 24.8w 15VC168 568 C~2lVl 2016 01 07.30705 03 08 51.580 +14 42 30.78 24.9w 15VC168 568 C~2lVl 2016 02 04.34036 03 08 23.485 +14 41 47.09 25.3w 15VC168 568 C~2lVl 2016 02 11.22942 03 08 30.750 +14 42 35.98 24.8w 15VC168 568 C~2lVl 2016 09 07.56785 03 25 49.829 +15 39 09.96 15VC168 568 C~2lVl 2016 09 27.50655 03 25 03.043 +15 33 53.47 24.6w 15VC168 568 C~2lVl 2016 10 10.44325 03 24 12.349 +15 29 23.83 25.0w 15VC168 568 C~2lVl 2016 10 10.51973 03 24 12.005 +15 29 22.11 24.7w 15VC168 568 C~2lVl 2016 11 02.51417 03 22 13.901 +15 20 08.77 24.7w 15VC168 568 C~2lVl 2016 11 04.38927 03 22 03.273 +15 19 21.86 24.5w 15VC168 568 C~2lVl 2016 12 24.31885 03 17 36.863 +15 01 34.40 25.0w 15VC168 568 C~2lVl 2017 01 02.42106 03 17 03.628 +14 59 41.13 25.0w 15VC168 568 C~2lVl 2017 01 26.33541 03 16 17.243 +14 57 44.93 24.9w 15VC168 568 C~2lVl 2017 09 16.59057 03 33 44.523 +15 51 44.25 24.8w 15VC168 568 C~2lVl 2017 09 23.53642 03 33 27.780 +15 49 52.59 24.5w 15VC168 568 C~2lVl 2017 12 13.36708 03 26 38.934 +15 20 13.38 24.6w 15VC168 568 C~2lVl
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 -0.06 0.00 0.08
2 0.0003 -9.31 0.11 -0.25 -0.04
3 0.0006 -19.71 -0.35 -0.41 -0.03
4 0.0055 -172.23 0.10 -3.58 -0.01
5 0.0167 -520.32 0.20 -9.57 0.06
6 0.7319 11683.12 0.03 -378.55 -0.07
7 0.8031 11695.08 0.11 -562.18 0.04
8 0.8193 11540.29 0.01 -601.97 -0.01
9 0.8875 10312.82 -0.02 -752.00 0.03
10 0.9721 7881.73 0.03 -877.41 0.05
11 0.9723 7878.03 0.05 -877.49 0.06
12 0.9724 7874.15 -0.11 -877.66 -0.01
13 0.9996 7008.05 -0.03 -900.22 -0.05
14 0.9997 7003.99 0.03 -900.26 -0.02
15 1.0516 5422.78 0.03 -918.56 -0.12
16 1.0706 4903.77 -0.25 -917.42 0.01
17 1.0708 4899.77 0.01 -917.40 -0.02
18 1.1228 3756.56 0.03 -896.55 0.02
19 1.1390 3501.08 -0.00 -885.60 -0.04
20 1.2158 3096.80 0.12 -816.94 0.07
21 1.2347 3211.55 0.03 -798.53 0.01
22 1.8078 18667.81 0.02 -1470.34 -0.06
23 1.8624 17928.08 -0.08 -1605.90 -0.07
24 1.8978 17145.36 -0.04 -1680.72 -0.01
25 1.8980 17140.08 0.01 -1681.12 -0.04
26 1.9610 15336.38 -0.01 -1779.48 -0.02
27 1.9661 15174.86 0.01 -1785.31 0.02
28 2.1028 11156.61 -0.01 -1815.04 0.02
29 2.1277 10660.83 0.06 -1798.00 -0.11
30 2.1932 9980.05 -0.07 -1733.22 0.22
31 2.8318 25573.56 0.06 -2448.05 0.00
32 2.8508 25308.07 -0.07 -2497.67 -0.02
33 3.0721 19072.12 0.05 -2754.83 0.04
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.
15VC168 quality flag:2 Type: SCATNEAR CENTAURR SCATNEAR axisobj 44.655 44.668 44.643 ecceobj 0.282 0.282 0.282 incobj 7.693 7.693 7.693 qmin 31.504 29.727 31.243 qmax 60.866 73.580 61.324 amean 43.804 46.225 45.155 amin 41.657 34.524 43.072 amax 46.776 52.445 47.321 emean 0.238 0.309 0.279 emin 0.193 0.120 0.235 emax 0.301 0.403 0.304 imean 6.338 6.800 12.818 imin 3.640 3.229 7.904 imax 9.533 9.439 15.811 excite_mean 0.263 0.333 0.358 fracstop 1.000 0.373 1.000 cjmean 3.015 2.992 2.960 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 183.0 183.7 174.8 kozaiamp 180.0 180.0 179.9