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: 15VW168 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 45 observations of 45 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000013 0.022343 0.000000 0.000492 0.023551 0.000000 # Chi-squared of fit: 5.11 DOF: 84 RMS: 0.06 # Min/Max residuals: -0.15 0.14 # Exact a, adot, b, bdot, g, gdot: 1.436869E-05 2.252312E-02 9.026161E-07 4.964908E-04 2.370039E-02 8.334723E-04 # Covariance matrix: 2.3897E-13 -2.5878E-13 2.5043E-15 -4.3057E-15 -1.2828E-13 -2.8029E-12 -2.5878E-13 3.9569E-13 -4.5960E-15 8.0631E-15 2.1972E-13 5.2201E-12 2.5043E-15 -4.5960E-15 1.3645E-13 -7.1486E-14 -3.0550E-15 -6.8948E-14 -4.3057E-15 8.0631E-15 -7.1486E-14 4.9518E-14 4.6642E-15 1.2255E-13 -1.2828E-13 2.1972E-13 -3.0550E-15 4.6642E-15 2.1392E-13 3.1411E-12 -2.8029E-12 5.2201E-12 -6.8948E-14 1.2255E-13 3.1411E-12 7.9062E-11 # lat0 lon0 xBary yBary zBary JD0 -1.522692 46.964688 -0.129339 -0.025920 -0.980642 2456978.792408 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 103.95989 +/- 0.198 Argument of Peri: 202.07520 +/- 0.194 Long of Asc Node: 96.76882 +/- 0.012 Inclination: 1.95293 +/- 0.000 Eccentricity: 0.03908429 +/- 0.0004 Semi-Major Axis: 42.70918796 +/- 0.0023 Time of Perihelion: 2427530.0999 +/- 55.9 Perihelion: 41.03992958 +/- 0.0159 Aphelion: 44.37844635 +/- 0.0159 Period (y) 279.1195 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.35650639 +/- 0.0006 Ecliptic Y 31.63646382 +/- 0.0006 Ecliptic Z -1.12117596 +/- 0.0000 Ecliptic XDOT -0.00183933 +/- 0.0000 Ecliptic YDOT 0.00184213 +/- 0.0000 Ecliptic ZDOT 0.00005488 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.17322487 +/- 0.0006 Geocenter to KBO 42.19339516 +/- 0.0008 # Hcoef: 8.04
The following table shows the complete astrometric record for 15VW168. 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 (15VW168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29163 02 59 47.324 +15 26 31.84 24.8r 15VW168 568 C~2nvz 2014 11 17.40051 02 59 46.780 +15 26 29.84 24.2r 15VW168 568 C~2nvz 2014 11 17.51464 02 59 46.240 +15 26 27.58 23.9r 15VW168 568 C~2nvz 2014 11 19.30670 02 59 37.763 +15 25 52.73 24.2r 15VW168 568 C~2nvz 2014 11 23.41007 02 59 18.530 +15 24 34.42 24.3r 15VW168 568 C~2nvz 2015 08 11.62323 03 09 28.862 +16 10 05.33 24.6w 15VW168 568 C~2nvz 2015 09 07.53281 03 09 20.069 +16 08 41.16 24.9w 15VW168 568 C~2nvz 2015 09 12.52956 03 09 11.351 +16 07 57.76 24.6w 15VW168 568 C~2nvz 2015 10 07.47166 03 07 58.809 +16 02 30.93 24.4w 15VW168 568 C~2nvz 2015 10 08.47583 03 07 55.009 +16 02 14.62 24.5w 15VW168 568 C~2nvz 2015 10 08.53403 03 07 54.784 +16 02 13.55 24.7w 15VW168 568 C~2nvz 2015 11 06.29151 03 05 47.829 +15 53 22.13 24.3r 15VW168 568 C~2nvz 2015 11 06.35485 03 05 47.528 +15 53 20.87 24.2r 15VW168 568 C~2nvz 2015 11 06.42547 03 05 47.168 +15 53 19.46 24.2r 15VW168 568 C~2nvz 2015 11 06.49480 03 05 46.844 +15 53 18.13 24.1r 15VW168 568 C~2nvz 2015 11 17.27960 03 04 54.983 +15 49 48.05 24.5w 15VW168 568 C~2nvz 2015 11 17.32888 03 04 54.746 +15 49 47.16 24.3w 15VW168 568 C~2nvz 2015 12 06.40765 03 03 27.446 +15 44 03.34 24.5w 15VW168 568 C~2nvz 2015 12 13.34220 03 02 59.070 +15 42 14.94 24.6w 15VW168 568 C~2nvz 2015 12 13.40075 03 02 58.822 +15 42 14.05 24.6w 15VW168 568 C~2nvz 2016 01 01.39556 03 01 56.138 +15 38 26.55 24.4w 15VW168 568 C~2nvz 2016 01 07.34177 03 01 42.021 +15 37 40.26 24.4w 15VW168 568 C~2nvz 2016 02 04.27190 03 01 18.170 +15 37 07.00 25.2w 15VW168 568 C~2nvz 2016 02 10.26162 03 01 22.693 +15 37 40.84 24.7w 15VW168 568 C~2nvz 2016 09 07.55050 03 14 22.453 +16 30 33.99 15VW168 568 C~2nvz 2016 09 26.61279 03 13 38.907 +16 27 14.81 24.7w 15VW168 568 C~2nvz 2016 10 10.42589 03 12 50.774 +16 23 49.85 24.6w 15VW168 568 C~2nvz 2016 10 10.48430 03 12 50.536 +16 23 48.90 24.7w 15VW168 568 C~2nvz 2016 10 10.50790 03 12 50.444 +16 23 48.52 24.6w 15VW168 568 C~2nvz 2016 10 27.51417 03 11 37.333 +16 18 48.55 24.8w 15VW168 568 C~2nvz 2016 11 03.53920 03 11 04.301 +16 16 35.80 24.4w 15VW168 568 C~2nvz 2016 12 28.39306 03 07 08.838 +16 01 42.24 25.3w 15VW168 568 C~2nvz 2016 12 28.40104 03 07 08.816 +16 01 42.18 25.1w 15VW168 568 C~2nvz 2016 12 29.35861 03 07 06.018 +16 01 32.55 24.8w 15VW168 568 C~2nvz 2016 12 29.36878 03 07 05.981 +16 01 32.42 24.9w 15VW168 568 C~2nvz 2017 01 01.25561 03 06 57.942 +16 01 05.35 24.3w 15VW168 568 C~2nvz 2017 01 01.26608 03 06 57.911 +16 01 05.38 24.6w 15VW168 568 C~2nvz 2017 01 02.36563 03 06 55.009 +16 00 55.75 24.7w 15VW168 568 C~2nvz 2017 01 02.37586 03 06 54.986 +16 00 55.62 24.5w 15VW168 568 C~2nvz 2017 01 26.26424 03 06 18.050 +15 59 18.81 24.6w 15VW168 568 C~2nvz 2017 01 26.27054 03 06 18.040 +15 59 18.87 24.6w 15VW168 568 C~2nvz 2017 09 15.60092 03 19 12.750 +16 50 57.93 24.6w 15VW168 568 C~2nvz 2017 09 22.58685 03 18 56.371 +16 49 45.51 24.5w 15VW168 568 C~2nvz 2017 12 16.38250 03 12 55.998 +16 26 26.14 24.5w 15VW168 568 C~2nvz 2017 12 16.38715 03 12 55.990 +16 26 26.17 24.6w 15VW168 568 C~2nvz
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 0.14 0.00 -0.12
2 0.0003 -8.11 -0.08 0.30 0.07
3 0.0006 -16.24 0.07 0.33 0.00
4 0.0055 -143.66 -0.00 1.42 -0.02
5 0.0168 -432.57 -0.04 4.71 0.06
6 0.7319 8793.83 0.11 194.26 0.06
7 0.8056 8648.83 -0.09 147.48 0.00
8 0.8193 8515.93 0.03 139.71 0.00
9 0.8876 7419.31 -0.03 109.10 -0.04
10 0.8903 7362.08 -0.04 108.32 0.05
11 0.8905 7358.66 -0.05 108.18 -0.06
12 0.9692 5450.39 -0.01 97.97 0.06
13 0.9694 5445.86 0.08 97.95 0.00
14 0.9696 5440.48 -0.15 98.02 0.03
15 0.9698 5435.61 0.06 98.03 0.01
16 0.9993 4657.92 -0.05 102.11 -0.04
17 0.9994 4654.39 -0.01 102.20 -0.00
18 1.0517 3347.82 -0.06 120.44 0.09
19 1.0706 2924.01 0.10 130.11 0.02
20 1.0708 2920.33 -0.10 130.25 0.05
21 1.1228 1987.35 -0.03 164.00 -0.14
22 1.1391 1778.60 -0.02 176.52 -0.02
23 1.2156 1438.48 0.03 240.96 -0.03
24 1.2320 1510.69 0.07 255.16 -0.08
25 1.8077 13207.19 -0.02 247.08 0.00
26 1.8599 12547.88 0.02 221.07 0.03
27 1.8977 11823.26 0.08 207.76 -0.04
28 1.8979 11819.70 0.00 207.75 -0.02
29 1.8979 11818.31 0.04 207.74 -0.03
30 1.9445 10720.86 0.12 199.95 0.01
31 1.9637 10225.83 0.06 199.68 -0.05
32 2.1139 6712.12 -0.10 258.85 0.05
33 2.1139 6711.79 -0.07 258.88 0.06
34 2.1165 6670.32 0.09 260.64 -0.02
35 2.1166 6669.77 -0.02 260.66 -0.02
36 2.1245 6550.76 -0.00 266.31 -0.04
37 2.1245 6550.34 -0.00 266.46 0.09
38 2.1275 6507.42 -0.05 268.64 0.03
39 2.1275 6507.06 -0.00 268.61 -0.03
40 2.1929 5967.85 0.05 321.37 0.00
41 2.1930 5967.72 -0.03 321.47 0.08
42 2.8290 17577.74 -0.08 336.51 -0.01
43 2.8482 17330.10 -0.05 327.44 0.02
44 3.0803 11937.75 -0.04 338.58 -0.05
45 3.0803 11937.64 0.13 338.64 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.
15VW168 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.038 43.045 43.030 ecceobj 0.042 0.043 0.042 incobj 1.953 1.953 1.953 qmin 40.134 40.112 40.133 qmax 45.568 45.557 45.471 amean 42.726 42.733 42.719 amin 42.396 42.406 42.385 amax 43.062 43.074 43.062 emean 0.040 0.040 0.039 emin 0.014 0.016 0.014 emax 0.058 0.058 0.057 imean 1.251 1.250 1.253 imin 0.117 0.115 0.117 imax 2.121 2.120 2.126 excite_mean 0.047 0.047 0.046 fracstop 1.000 1.000 1.000 cjmean 3.084 3.084 3.084 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 182.6 182.4 182.8 kozaiamp 180.0 179.9 180.0