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: 15VR168 # Created Tue Apr 1 01:10:40 2025 # Orbit generated from Bernstein formalism # Fitting 45 observations of 45 # Arc: 2.19y # First observation: 2014/11/17 # Last observation: 2017/01/26 Preliminary a, adot, b, bdot, g, gdot: 0.000024 0.020155 -0.000000 0.000499 0.022177 0.000000 # Chi-squared of fit: 7.67 DOF: 84 RMS: 0.07 # Min/Max residuals: -0.23 0.16 # Exact a, adot, b, bdot, g, gdot: 1.465170E-05 2.030300E-02 -2.149776E-07 5.040864E-04 2.228315E-02 1.234770E-03 # Covariance matrix: 2.6632E-13 -3.6411E-13 2.8275E-15 -6.5186E-15 -1.7439E-13 -5.5378E-12 -3.6411E-13 7.1450E-13 -6.8852E-15 1.5871E-14 4.2497E-13 1.3484E-11 2.8275E-15 -6.8852E-15 1.6128E-13 -1.0835E-13 -4.8315E-15 -1.4895E-13 -6.5186E-15 1.5871E-14 -1.0835E-13 9.1727E-14 1.0623E-14 3.4346E-13 -1.7439E-13 4.2497E-13 -4.8315E-15 1.0623E-14 3.8572E-13 9.1738E-12 -5.5378E-12 1.3484E-11 -1.4895E-13 3.4346E-13 9.1738E-12 2.9177E-10 # lat0 lon0 xBary yBary zBary JD0 -0.903548 47.339989 -0.122998 -0.015334 -0.981679 2456978.797448 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 114.21141 +/- 0.359 Argument of Peri: 206.99959 +/- 0.352 Long of Asc Node: 79.33209 +/- 0.015 Inclination: 1.67608 +/- 0.001 Eccentricity: 0.06869285 +/- 0.0007 Semi-Major Axis: 44.43776975 +/- 0.0042 Time of Perihelion: 2422643.6627 +/- 107.7 Perihelion: 41.38521248 +/- 0.0310 Aphelion: 47.49032702 +/- 0.0311 Period (y) 296.2351 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.97865945 +/- 0.0008 Ecliptic Y 33.80474505 +/- 0.0009 Ecliptic Z -0.70770087 +/- 0.0000 Ecliptic XDOT -0.00173528 +/- 0.0000 Ecliptic YDOT 0.00179773 +/- 0.0000 Ecliptic ZDOT 0.00005964 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.85781253 +/- 0.0009 Geocenter to KBO 44.87696151 +/- 0.0013 # Hcoef: 7.79
The following table shows the complete astrometric record for 15VR168. 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 (15VR168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29667 03 00 33.723 +16 08 30.60 24.1r 15VR168 568 C~2nvy 2014 11 17.40560 03 00 33.235 +16 08 28.54 24.3r 15VR168 568 C~2nvy 2014 11 17.51968 03 00 32.700 +16 08 26.38 24.3r 15VR168 568 C~2nvy 2014 11 19.31306 03 00 24.637 +16 07 53.17 24.2r 15VR168 568 C~2nvy 2014 11 23.41643 03 00 06.344 +16 06 38.38 24.5r 15VR168 568 C~2nvy 2015 09 06.63576 03 09 25.433 +16 47 07.17 24.2w 15VR168 568 C~2nvy 2015 09 12.52541 03 09 15.767 +16 46 23.53 24.8w 15VR168 568 C~2nvy 2015 09 12.52956 03 09 15.761 +16 46 23.46 24.7w 15VR168 568 C~2nvy 2015 10 07.47166 03 08 06.529 +16 41 29.25 24.7w 15VR168 568 C~2nvy 2015 10 08.47003 03 08 02.943 +16 41 14.32 24.3w 15VR168 568 C~2nvy 2015 11 06.28626 03 06 02.079 +16 32 58.96 24.3r 15VR168 568 C~2nvy 2015 11 06.34963 03 06 01.777 +16 32 58.02 24.4r 15VR168 568 C~2nvy 2015 11 06.42017 03 06 01.448 +16 32 56.84 24.4r 15VR168 568 C~2nvy 2015 11 06.48956 03 06 01.126 +16 32 55.31 24.5r 15VR168 568 C~2nvy 2015 11 07.50772 03 05 56.483 +16 32 36.70 24.2w 15VR168 568 C~2nvy 2015 11 17.27378 03 05 11.863 +16 29 36.69 15VR168 568 C~2nvy 2015 11 17.27960 03 05 11.839 +16 29 36.62 24.4w 15VR168 568 C~2nvy 2015 11 17.32308 03 05 11.637 +16 29 35.84 24.6w 15VR168 568 C~2nvy 2015 11 17.32888 03 05 11.614 +16 29 35.73 24.6w 15VR168 568 C~2nvy 2015 12 06.40182 03 03 48.628 +16 24 05.89 24.5w 15VR168 568 C~2nvy 2015 12 13.33636 03 03 21.594 +16 22 20.03 24.7w 15VR168 568 C~2nvy 2015 12 13.34220 03 03 21.563 +16 22 19.96 24.5w 15VR168 568 C~2nvy 2015 12 13.39494 03 03 21.363 +16 22 19.11 24.5w 15VR168 568 C~2nvy 2015 12 13.40075 03 03 21.334 +16 22 19.11 24.7w 15VR168 568 C~2nvy 2016 01 01.38920 03 02 21.451 +16 18 31.68 24.6w 15VR168 568 C~2nvy 2016 01 02.35555 03 02 19.061 +16 18 23.02 24.0w 15VR168 568 C~2nvy 2016 01 07.33598 03 02 07.896 +16 17 42.83 24.8w 15VR168 568 C~2nvy 2016 01 07.34177 03 02 07.873 +16 17 42.68 24.9w 15VR168 568 C~2nvy 2016 02 03.22261 03 01 43.814 +16 16 41.11 25.0w 15VR168 568 C~2nvy 2016 02 03.22917 03 01 43.830 +16 16 41.15 25.2w 15VR168 568 C~2nvy 2016 02 04.26610 03 01 44.181 +16 16 44.25 24.8w 15VR168 568 C~2nvy 2016 02 10.26162 03 01 48.201 +16 17 09.96 24.2w 15VR168 568 C~2nvy 2016 09 07.55628 03 13 57.128 +17 06 53.23 15VR168 568 C~2nvy 2016 09 26.61279 03 13 15.283 +17 03 56.36 25.1w 15VR168 568 C~2nvy 2016 10 10.42589 03 12 29.374 +17 00 48.93 24.5w 15VR168 568 C~2nvy 2016 10 10.43169 03 12 29.347 +17 00 48.93 24.4w 15VR168 568 C~2nvy 2016 10 10.48430 03 12 29.149 +17 00 48.09 24.7w 15VR168 568 C~2nvy 2016 10 10.49031 03 12 29.126 +17 00 47.98 24.6w 15VR168 568 C~2nvy 2016 10 10.50790 03 12 29.061 +17 00 47.74 24.7w 15VR168 568 C~2nvy 2016 10 27.52577 03 11 19.470 +16 56 09.08 24.6w 15VR168 568 C~2nvy 2016 11 03.55078 03 10 48.091 +16 54 04.50 24.7w 15VR168 568 C~2nvy 2016 12 29.36878 03 07 01.691 +16 39 31.61 24.9w 15VR168 568 C~2nvy 2017 01 01.26608 03 06 53.997 +16 39 03.96 24.5w 15VR168 568 C~2nvy 2017 01 02.37586 03 06 51.195 +16 38 53.92 24.6w 15VR168 568 C~2nvy 2017 01 26.27054 03 06 15.581 +16 37 01.32 24.7w 15VR168 568 C~2nvy
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 -0.05 0.00 0.12
2 0.0003 -7.33 0.11 -0.00 0.02
3 0.0006 -15.33 -0.05 0.09 0.04
4 0.0055 -136.16 -0.02 0.82 -0.05
5 0.0168 -410.16 0.05 3.11 -0.07
6 0.8031 7994.77 -0.02 120.73 0.16
7 0.8192 7849.11 -0.01 116.21 0.01
8 0.8193 7849.01 0.01 116.17 -0.03
9 0.8875 6810.67 -0.07 102.43 -0.01
10 0.8903 6756.97 0.03 102.06 -0.02
11 0.9692 4949.03 0.12 99.68 -0.23
12 0.9693 4944.59 0.04 99.96 0.02
13 0.9695 4939.72 0.04 100.13 0.13
14 0.9697 4934.84 -0.03 99.92 -0.10
15 0.9725 4865.50 0.02 100.34 0.07
16 0.9993 4198.74 -0.03 103.52 -0.07
17 0.9993 4198.39 0.02 103.55 -0.05
18 0.9994 4195.38 0.00 103.60 -0.04
19 0.9994 4195.03 0.05 103.59 -0.06
20 1.0516 2956.14 0.07 116.04 0.05
21 1.0706 2552.93 0.11 122.11 -0.08
22 1.0706 2552.48 -0.00 122.16 -0.03
23 1.0708 2549.48 -0.02 122.15 -0.11
24 1.0708 2549.07 -0.09 122.26 -0.01
25 1.1228 1657.77 -0.11 143.35 0.08
26 1.1254 1622.31 -0.11 144.62 0.15
27 1.1391 1456.72 0.06 150.81 -0.02
28 1.1391 1456.36 -0.11 150.76 -0.08
29 1.2127 1106.53 -0.12 188.29 0.03
30 1.2127 1106.76 0.09 188.26 -0.01
31 1.2155 1112.48 -0.02 189.83 0.06
32 1.2319 1175.24 0.01 198.36 -0.02
33 1.8077 12078.11 -0.05 221.74 0.04
34 1.8599 11450.70 -0.09 210.12 0.15
35 1.8977 10764.17 0.03 204.45 -0.05
36 1.8977 10763.79 -0.02 204.56 0.05
37 1.8978 10760.83 -0.01 204.50 -0.01
38 1.8979 10760.48 -0.02 204.48 -0.02
39 1.8979 10759.51 0.01 204.50 -0.01
40 1.9445 9720.41 0.07 202.55 0.15
41 1.9637 9252.19 0.01 203.24 0.06
42 2.1166 5881.30 -0.03 243.00 -0.18
43 2.1245 5767.29 0.13 246.59 -0.03
44 2.1275 5725.78 0.03 247.93 -0.06
45 2.1929 5202.27 -0.01 279.63 0.03
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.
15VR168 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.785 44.799 44.771 ecceobj 0.070 0.071 0.068 incobj 1.675 1.674 1.675 qmin 40.715 40.645 40.747 qmax 48.432 48.518 48.342 amean 44.460 44.473 44.447 amin 44.104 44.111 44.094 amax 44.831 44.839 44.814 emean 0.066 0.068 0.065 emin 0.050 0.052 0.049 emax 0.081 0.083 0.079 imean 0.628 0.628 0.629 imin 0.287 0.290 0.283 imax 0.866 0.868 0.866 excite_mean 0.067 0.069 0.066 fracstop 1.000 1.000 1.000 cjmean 3.102 3.101 3.102 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 191.6 192.1 191.4 kozaiamp 179.9 180.0 180.0