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: 15VO167 # Created Tue Apr 1 01:10:39 2025 # Orbit generated from Bernstein formalism # Fitting 45 observations of 45 # Arc: 3.07y # First observation: 2014/11/17 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: 0.000308 0.026287 0.000094 0.008316 0.025232 0.000000 # Chi-squared of fit: 8.76 DOF: 84 RMS: 0.08 # Min/Max residuals: -0.16 0.31 # Exact a, adot, b, bdot, g, gdot: 1.663340E-05 2.702511E-02 5.505955E-06 8.556309E-03 2.566495E-02 7.623085E-03 # Covariance matrix: 2.3817E-13 -2.6120E-13 2.9359E-14 -5.8748E-14 -1.2053E-13 -2.3921E-12 -2.6120E-13 3.9909E-13 -5.4116E-14 1.0846E-13 1.9199E-13 4.4170E-12 2.9359E-14 -5.4116E-14 1.3901E-13 -8.6949E-14 -2.7976E-14 -6.8966E-13 -5.8748E-14 1.0846E-13 -8.6949E-14 8.4564E-14 5.5538E-14 1.3833E-12 -1.2053E-13 1.9199E-13 -2.7976E-14 5.5538E-14 1.9073E-13 2.2599E-12 -2.3921E-12 4.4170E-12 -6.8966E-13 1.3833E-12 2.2599E-12 5.6340E-11 # lat0 lon0 xBary yBary zBary JD0 -1.386604 47.077959 -0.127399 -0.023597 -0.980954 2456978.792408 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 23.32379 +/- 0.011 Argument of Peri: 300.39153 +/- 0.025 Long of Asc Node: 51.52554 +/- 0.000 Inclination: 17.62971 +/- 0.000 Eccentricity: 0.40585420 +/- 0.0003 Semi-Major Axis: 58.91411904 +/- 0.0159 Time of Perihelion: 2446269.5075 +/- 2.2 Perihelion: 35.00357648 +/- 0.0186 Aphelion: 82.82466159 +/- 0.0275 Period (y) 452.2070 +/- 0.18 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.09837879 +/- 0.0004 Ecliptic Y 29.33080909 +/- 0.0005 Ecliptic Z -0.94266024 +/- 0.0000 Ecliptic XDOT -0.00154673 +/- 0.0000 Ecliptic YDOT 0.00256982 +/- 0.0000 Ecliptic ZDOT 0.00089291 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.94379931 +/- 0.0005 Geocenter to KBO 38.96364202 +/- 0.0007 # Hcoef: 8.20
The following table shows the complete astrometric record for 15VO167. 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 (15VO167) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29163 03 00 04.849 +15 36 16.68 24.0r 15VO167 568 C~2lVj 2014 11 17.40051 03 00 04.282 +15 36 14.94 24.2r 15VO167 568 C~2lVj 2014 11 17.51464 03 00 03.679 +15 36 13.11 24.2r 15VO167 568 C~2lVj 2014 11 19.30670 02 59 54.522 +15 35 43.90 24.2r 15VO167 568 C~2lVj 2014 11 23.41007 02 59 33.717 +15 34 38.36 24.0r 15VO167 568 C~2lVj 2015 08 11.62323 03 10 34.502 +16 43 20.28 24.6w 15VO167 568 C~2lVj 2015 09 07.53281 03 10 25.832 +16 44 15.62 24.2w 15VO167 568 C~2lVj 2015 09 12.52956 03 10 16.552 +16 43 56.07 24.8w 15VO167 568 C~2lVj 2015 10 07.47166 03 08 58.811 +16 40 18.38 24.4w 15VO167 568 C~2lVj 2015 10 08.47003 03 08 54.762 +16 40 06.11 24.6w 15VO167 568 C~2lVj 2015 10 08.47583 03 08 54.731 +16 40 06.08 24.5w 15VO167 568 C~2lVj 2015 10 08.52822 03 08 54.518 +16 40 05.43 24.3w 15VO167 568 C~2lVj 2015 10 08.53403 03 08 54.497 +16 40 05.37 24.4w 15VO167 568 C~2lVj 2015 11 06.28626 03 06 37.820 +16 32 58.96 24.0r 15VO167 568 C~2lVj 2015 11 06.34963 03 06 37.481 +16 32 58.00 24.4r 15VO167 568 C~2lVj 2015 11 06.42017 03 06 37.120 +16 32 56.79 24.4r 15VO167 568 C~2lVj 2015 11 06.48956 03 06 36.757 +16 32 55.51 24.1r 15VO167 568 C~2lVj 2015 11 07.50772 03 06 31.480 +16 32 39.00 24.4w 15VO167 568 C~2lVj 2015 11 17.27378 03 05 40.847 +16 30 00.46 24.3w 15VO167 568 C~2lVj 2015 11 17.32308 03 05 40.583 +16 29 59.67 24.5w 15VO167 568 C~2lVj 2015 12 13.33636 03 03 35.777 +16 23 46.43 24.5w 15VO167 568 C~2lVj 2015 12 13.39494 03 03 35.514 +16 23 45.79 24.3w 15VO167 568 C~2lVj 2016 01 01.38920 03 02 27.871 +16 20 56.13 23.7w 15VO167 568 C~2lVj 2016 01 02.35555 03 02 25.186 +16 20 50.47 24.6w 15VO167 568 C~2lVj 2016 01 07.33598 03 02 12.627 +16 20 28.19 24.4w 15VO167 568 C~2lVj 2016 02 10.25584 03 01 51.674 +16 22 27.21 24.5w 15VO167 568 C~2lVj 2016 09 07.55628 03 15 52.025 +17 35 15.51 15VO167 568 C~2lVj 2016 09 26.61685 03 15 05.809 +17 33 35.96 24.6w 15VO167 568 C~2lVj 2016 10 27.50259 03 12 55.694 +17 27 25.91 24.5w 15VO167 568 C~2lVj 2016 10 27.52577 03 12 55.576 +17 27 25.44 25.0w 15VO167 568 C~2lVj 2016 11 02.60863 03 12 24.932 +17 25 53.63 24.1w 15VO167 568 C~2lVj 2016 11 03.52763 03 12 20.243 +17 25 39.57 24.6w 15VO167 568 C~2lVj 2016 11 03.55078 03 12 20.109 +17 25 39.19 24.5w 15VO167 568 C~2lVj 2016 12 28.38756 03 08 06.849 +17 13 26.15 24.5w 15VO167 568 C~2lVj 2016 12 29.35312 03 08 03.785 +17 13 18.93 24.8w 15VO167 568 C~2lVj 2016 12 29.37514 03 08 03.711 +17 13 18.65 24.5w 15VO167 568 C~2lVj 2017 01 01.25010 03 07 55.084 +17 12 58.97 24.3w 15VO167 568 C~2lVj 2017 01 02.36014 03 07 51.918 +17 12 52.11 24.6w 15VO167 568 C~2lVj 2017 01 02.38235 03 07 51.851 +17 12 51.90 24.6w 15VO167 568 C~2lVj 2017 01 26.25322 03 07 11.844 +17 12 16.28 24.6w 15VO167 568 C~2lVj 2017 01 26.27742 03 07 11.827 +17 12 16.39 24.5w 15VO167 568 C~2lVj 2017 09 16.61554 03 21 00.621 +18 24 33.70 24.6w 15VO167 568 C~2lVj 2017 09 23.55460 03 20 42.848 +18 23 59.83 24.7w 15VO167 568 C~2lVj 2017 12 13.37637 03 14 32.958 +18 06 53.70 24.4w 15VO167 568 C~2lVj 2017 12 13.41395 03 14 32.797 +18 06 53.49 24.4w 15VO167 568 C~2lVj
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 0.00 0.00 -0.05
2 0.0003 -8.35 0.04 0.63 -0.03
3 0.0006 -17.22 -0.04 1.33 0.05
4 0.0055 -152.39 0.08 10.52 -0.00
5 0.0168 -459.28 0.00 32.30 -0.05
6 0.7319 9835.84 0.03 1372.81 0.02
7 0.8056 9730.56 -0.01 1459.71 -0.05
8 0.8193 9596.62 -0.03 1476.77 -0.06
9 0.8876 8460.22 -0.15 1568.77 -0.03
10 0.8903 8400.79 -0.03 1572.72 -0.04
11 0.8903 8400.36 -0.11 1572.81 0.03
12 0.8904 8397.23 -0.02 1573.02 0.00
13 0.8905 8396.92 0.03 1573.04 -0.00
14 0.9692 6387.79 0.05 1697.53 0.07
15 0.9694 6382.84 -0.03 1697.94 0.15
16 0.9696 6377.51 0.08 1698.20 0.04
17 0.9697 6372.13 0.07 1698.39 -0.11
18 0.9725 6294.56 -0.02 1703.28 -0.03
19 0.9993 5550.23 0.13 1750.45 -0.09
20 0.9994 5546.36 0.04 1750.74 -0.08
21 1.0706 3716.61 0.06 1887.38 -0.08
22 1.0708 3712.80 -0.07 1887.81 0.02
23 1.1228 2730.21 0.03 1995.27 0.22
24 1.1254 2691.51 -0.03 2000.60 -0.02
25 1.1391 2511.66 -0.16 2029.57 0.09
26 1.2319 2255.23 -0.10 2228.03 0.10
27 1.8077 15071.07 -0.04 3172.30 0.02
28 1.8599 14403.83 0.31 3249.76 -0.10
29 1.9445 12502.71 -0.05 3384.70 0.06
30 1.9445 12500.95 -0.09 3384.69 -0.06
31 1.9612 12052.18 -0.06 3412.78 0.05
32 1.9637 11983.51 0.04 3417.09 0.10
33 1.9637 11981.56 -0.15 3417.24 0.14
34 2.1139 8282.14 0.08 3686.33 -0.04
35 2.1165 8237.85 0.00 3691.30 0.02
36 2.1166 8236.75 -0.08 3691.32 -0.08
37 2.1245 8112.24 0.10 3705.96 -0.05
38 2.1275 8066.65 0.05 3711.68 -0.01
39 2.1276 8065.67 -0.02 3711.74 -0.06
40 2.1929 7503.56 0.06 3833.57 -0.02
41 2.1930 7503.35 0.03 3833.74 0.03
42 2.8318 20128.47 -0.03 4900.86 0.03
43 2.8508 19872.85 0.03 4932.67 -0.04
44 3.0721 14479.47 -0.09 5306.48 -0.14
45 3.0722 14477.19 0.06 5306.88 0.09
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.
15VO167 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 59.770 59.819 59.722 ecceobj 0.415 0.415 0.414 incobj 17.590 17.590 17.590 qmin 33.800 34.151 33.208 qmax 86.074 85.553 85.899 amean 59.157 59.227 59.063 amin 58.237 58.285 58.235 amax 60.256 60.293 60.166 emean 0.408 0.404 0.412 emin 0.386 0.381 0.387 emax 0.429 0.422 0.435 imean 16.794 17.067 16.226 imin 15.574 15.961 14.464 imax 17.963 18.154 17.822 excite_mean 0.500 0.500 0.498 fracstop 1.000 1.000 1.000 cjmean 2.959 2.961 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 173.6 173.9 179.9 kozaiamp 179.9 180.0 179.9