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: 15VU167 # Created Fri Apr 19 01:17:54 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 34 observations of 34 # Arc: 8.99y # First observation: 2014/11/23 # Last observation: 2023/11/19 # Chi-squared of fit: 3.31 DOF: 62 RMS: 0.06 # Min/Max residuals: -0.20 0.11 # Exact a, adot, b, bdot, g, gdot: 1.750137E-05 2.940367E-02 -1.414097E-06 -2.550620E-03 2.681200E-02 4.332602E-04 # Covariance matrix: 3.2222E-13 -2.0462E-13 -1.7775E-14 1.5405E-14 -9.6429E-14 -6.4071E-13 -2.0462E-13 1.6010E-13 1.4735E-14 -1.2721E-14 4.7836E-14 5.2889E-13 -1.7775E-14 1.4735E-14 9.0215E-14 -2.3756E-14 3.8665E-15 5.2469E-14 1.5405E-14 -1.2721E-14 -2.3756E-14 1.2267E-14 -3.5454E-15 -4.5265E-14 -9.6429E-14 4.7836E-14 3.8665E-15 -3.5454E-15 1.4936E-13 1.4833E-13 -6.4071E-13 5.2889E-13 5.2469E-14 -4.5265E-14 1.4833E-13 1.8817E-12 # lat0 lon0 xBary yBary zBary JD0 -0.269210 47.989868 -0.216649 -0.004364 -0.963929 2456984.917208 # Heliocentric elements and errors Epoch: 2456984.5000 = 2014/11/23 Mean Anomaly: 4.84566 +/- 0.012 Argument of Peri: 176.02539 +/- 0.017 Long of Asc Node: 225.29417 +/- 0.000 Inclination: 4.96266 +/- 0.000 Eccentricity: 0.17531144 +/- 0.0001 Semi-Major Axis: 46.34186927 +/- 0.0034 Time of Perihelion: 2455433.5087 +/- 3.7 Perihelion: 38.21760957 +/- 0.0037 Aphelion: 54.46612897 +/- 0.0047 Period (y) 315.4776 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.44199676 +/- 0.0004 Ecliptic Y 28.57487304 +/- 0.0004 Ecliptic Z -0.17532640 +/- 0.0000 Ecliptic XDOT -0.00220637 +/- 0.0000 Ecliptic YDOT 0.00203641 +/- 0.0000 Ecliptic ZDOT -0.00026056 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.26027189 +/- 0.0004 Geocenter to KBO 37.29677227 +/- 0.0005 # Hcoef: 6.95
The following table shows the complete astrometric record for 15VU167. 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 (15VU167) followed by the observatory code and reference code for the source of the astrometry.
2014 11 23.41643 03 02 25.555 +16 55 56.99 22.8r 15VU167 568 C~2lVk 2015 08 11.57225 03 14 42.186 +17 39 27.63 22.9w 15VU167 568 C~2lVk 2015 09 06.61892 03 14 41.998 +17 38 33.52 23.0w 15VU167 568 C~2lVk 2015 09 12.50905 03 14 32.381 +17 37 43.93 23.0w 15VU167 568 C~2lVk 2015 10 07.43408 03 13 16.871 +17 31 59.82 23.0w 15VU167 568 C~2lVk 2015 10 08.44583 03 13 12.767 +17 31 41.91 22.9w 15VU167 568 C~2lVk 2015 10 08.50488 03 13 12.526 +17 31 40.87 23.0w 15VU167 568 C~2lVk 2015 11 07.35377 03 10 48.365 +17 21 20.02 22.8r 15VU167 568 C~2lVk 2015 11 07.39585 03 10 48.137 +17 21 19.09 22.8r 15VU167 568 C~2lVk 2015 11 07.43803 03 10 47.911 +17 21 18.15 22.8r 15VU167 568 C~2lVk 2015 11 10.52298 03 10 31.513 +17 20 08.07 22.8w 15VU167 568 C~2lVk 2015 11 17.36965 03 09 55.099 +17 17 32.65 22.9w 15VU167 568 C~2lVk 2015 11 17.41626 03 09 54.847 +17 17 31.62 22.9w 15VU167 568 C~2lVk 2015 12 06.37850 03 08 18.476 +17 10 39.97 22.7w 15VU167 568 C~2lVk 2015 12 13.31287 03 07 46.840 +17 08 24.29 23.0w 15VU167 568 C~2lVk 2015 12 13.37141 03 07 46.584 +17 08 23.20 23.0w 15VU167 568 C~2lVk 2016 01 01.36607 03 06 36.714 +17 03 20.84 23.1w 15VU167 568 C~2lVk 2016 02 10.27908 03 06 00.860 +17 00 23.41 23.1w 15VU167 568 C~2lVk 2016 09 06.61138 03 21 32.751 +17 55 46.92 23.1w 15VU167 568 C~2lVk 2016 09 26.60062 03 20 48.367 +17 52 16.34 23.0w 15VU167 568 C~2lVk 2016 10 10.40808 03 19 57.645 +17 48 36.71 23.0w 15VU167 568 C~2lVk 2016 10 10.46643 03 19 57.400 +17 48 35.65 23.0w 15VU167 568 C~2lVk 2016 11 02.52573 03 18 07.226 +17 40 55.01 23.0w 15VU167 568 C~2lVk 2016 11 04.40084 03 17 57.410 +17 40 14.45 23.0w 15VU167 568 C~2lVk 2016 12 24.31334 03 13 53.873 +17 23 32.18 23.1w 15VU167 568 C~2lVk 2017 01 02.41556 03 13 23.776 +17 21 27.36 23.1w 15VU167 568 C~2lVk 2017 09 15.58856 03 28 11.168 +18 10 58.91 23.1w 15VU167 568 C~2lVk 2017 09 22.57478 03 27 55.137 +18 09 44.51 23.1w 15VU167 568 C~2lVk 2017 12 13.39064 03 21 35.145 +17 44 10.25 22.9w 15VU167 568 C~2lVk 2017 12 13.42791 03 21 34.973 +17 44 09.59 23.1w 15VU167 568 C~2lVk 2017 12 16.34929 03 21 21.900 +17 43 18.13 23.1w 15VU167 568 C~2lVk 2017 12 16.36856 03 21 21.806 +17 43 17.84 23.0w 15VU167 568 C~2lVk 2023 11 19.85147 04 05 31.18 +19 15 27.3 22.8w 15VU167 O18 C~7XBh 2023 11 19.85803 04 05 31.13 +19 15 27.3 22.6w 15VU167 O18 C~7XBh
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 -0.03 0.00 -0.03
2 0.7150 0.00 0.04 0.00 0.02
3 0.7863 0.00 -0.20 0.00 0.06
4 0.8024 0.00 0.02 0.00 -0.01
5 0.8707 0.00 0.01 0.00 -0.06
6 0.8735 0.00 -0.05 0.00 0.00
7 0.8736 0.00 0.04 0.00 0.01
8 0.9553 0.00 0.09 0.00 0.09
9 0.9555 0.00 0.07 0.00 0.10
10 0.9556 0.00 0.09 0.00 0.11
11 0.9640 0.00 -0.01 0.00 -0.03
12 0.9828 0.00 -0.00 0.00 -0.05
13 0.9829 0.00 -0.01 0.00 -0.03
14 1.0348 0.00 -0.01 0.00 -0.03
15 1.0538 0.00 -0.04 0.00 -0.03
16 1.0539 0.00 0.03 0.00 -0.02
17 1.1060 0.00 0.05 0.00 0.07
18 1.2152 0.00 -0.07 0.00 -0.00
19 1.7884 0.00 -0.02 0.00 -0.02
20 1.8431 0.00 0.07 0.00 -0.05
21 1.8809 0.00 0.01 0.00 -0.02
22 1.8810 0.00 0.07 0.00 -0.05
23 1.9442 0.00 0.03 0.00 -0.07
24 1.9493 0.00 0.01 0.00 -0.02
25 2.0860 0.00 -0.01 0.00 -0.04
26 2.1109 0.00 -0.01 0.00 -0.04
27 2.8122 0.00 0.01 0.00 0.02
28 2.8314 0.00 -0.03 0.00 0.00
29 3.0554 0.00 0.00 0.00 0.01
30 3.0555 0.00 0.02 0.00 0.02
31 3.0635 0.00 0.05 0.00 0.04
32 3.0635 0.00 -0.07 0.00 0.08
33 8.9896 0.00 0.10 0.00 -0.06
34 8.9896 0.00 -0.11 0.00 0.05
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.
15VU167 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.775 46.775 46.775 ecceobj 0.183 0.183 0.183 incobj 4.948 4.948 4.948 qmin 37.213 37.169 37.229 qmax 55.863 55.838 55.816 amean 46.337 46.333 46.336 amin 45.929 45.923 45.932 amax 46.802 46.802 46.802 emean 0.180 0.180 0.180 emin 0.167 0.166 0.167 emax 0.195 0.194 0.194 imean 6.358 6.365 6.355 imin 5.715 5.716 5.716 imax 7.074 7.156 7.025 excite_mean 0.211 0.211 0.211 fracstop 1.000 1.000 1.000 cjmean 3.075 3.075 3.075 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 184.8 186.3 183.3 kozaiamp 179.9 180.0 179.9