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: 15VB167 # Created Sun Apr 27 01:10:40 2025 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000067 0.025381 -0.000005 0.000777 0.024919 0.000000 # Chi-squared of fit: 11.56 DOF: 70 RMS: 0.10 # Min/Max residuals: -0.23 0.25 # Exact a, adot, b, bdot, g, gdot: 1.572366E-05 2.545495E-02 -9.137543E-08 7.800827E-04 2.509563E-02 -6.716116E-04 # Covariance matrix: 3.0260E-13 -3.4502E-13 5.3107E-15 -8.4631E-15 -1.4359E-13 -3.2359E-12 -3.4502E-13 5.1531E-13 -9.0036E-15 1.4551E-14 2.3242E-13 5.5513E-12 5.3107E-15 -9.0036E-15 1.4618E-13 -7.7662E-14 -5.3684E-15 -1.0893E-13 -8.4631E-15 1.4551E-14 -7.7662E-14 5.6450E-14 7.1640E-15 1.7583E-13 -1.4359E-13 2.3242E-13 -5.3684E-15 7.1640E-15 2.2068E-13 2.8233E-12 -3.2359E-12 5.5513E-12 -1.0893E-13 1.7583E-13 2.8233E-12 6.7094E-11 # lat0 lon0 xBary yBary zBary JD0 -2.410145 48.136296 -0.108901 -0.041212 -0.982601 2456978.772168 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 339.99940 +/- 0.222 Argument of Peri: 329.77384 +/- 0.260 Long of Asc Node: 101.47495 +/- 0.008 Inclination: 2.93734 +/- 0.000 Eccentricity: 0.07076723 +/- 0.0001 Semi-Major Axis: 43.70814385 +/- 0.0028 Time of Perihelion: 2462834.3451 +/- 65.2 Perihelion: 40.61503962 +/- 0.0063 Aphelion: 46.80124807 +/- 0.0064 Period (y) 288.9693 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.14129376 +/- 0.0005 Ecliptic Y 30.45621285 +/- 0.0006 Ecliptic Z -1.67570922 +/- 0.0000 Ecliptic XDOT -0.00211891 +/- 0.0000 Ecliptic YDOT 0.00179648 +/- 0.0000 Ecliptic ZDOT 0.00008821 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.82938561 +/- 0.0005 Geocenter to KBO 39.84758008 +/- 0.0007 # Hcoef: 8.95
The following table shows the complete astrometric record for 15VB167. 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 (15VB167) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27139 03 05 28.400 +14 54 55.72 24.5r 15VB167 568 C~2lVh 2014 11 17.38009 03 05 27.838 +14 54 53.42 24.6r 15VB167 568 C~2lVh 2014 11 17.49387 03 05 27.275 +14 54 51.13 24.6r 15VB167 568 C~2lVh 2014 11 19.28114 03 05 18.392 +14 54 16.29 25.1r 15VB167 568 C~2lVh 2015 08 11.61007 03 15 50.401 +15 42 23.77 25.9w 15VB167 568 C~2lVh 2015 09 06.62757 03 15 48.109 +15 40 54.86 25.6w 15VB167 568 C~2lVh 2015 09 12.51723 03 15 38.695 +15 40 01.30 25.3w 15VB167 568 C~2lVh 2015 10 07.45292 03 14 26.419 +15 34 20.25 25.0w 15VB167 568 C~2lVh 2015 10 08.45753 03 14 22.527 +15 34 03.26 25.1w 15VB167 568 C~2lVh 2015 10 08.51654 03 14 22.302 +15 34 02.32 25.7w 15VB167 568 C~2lVh 2015 11 07.36426 03 12 05.605 +15 24 36.07 25.0r 15VB167 568 C~2lVh 2015 11 07.40638 03 12 05.382 +15 24 35.30 24.8r 15VB167 568 C~2lVh 2015 11 07.44859 03 12 05.175 +15 24 34.42 24.7r 15VB167 568 C~2lVh 2015 11 10.53471 03 11 49.612 +15 23 33.08 24.8w 15VB167 568 C~2lVh 2015 11 17.38127 03 11 15.076 +15 21 18.86 24.7w 15VB167 568 C~2lVh 2015 11 17.42797 03 11 14.837 +15 21 18.03 25.1w 15VB167 568 C~2lVh 2015 12 06.39016 03 09 43.141 +15 15 36.52 25.1w 15VB167 568 C~2lVh 2015 12 13.32462 03 09 12.917 +15 13 49.95 25.5w 15VB167 568 C~2lVh 2015 12 13.38310 03 09 12.639 +15 13 49.06 25.0w 15VB167 568 C~2lVh 2016 01 01.37764 03 08 05.212 +15 10 11.47 25.1w 15VB167 568 C~2lVh 2016 01 07.32440 03 07 49.808 +15 09 29.68 25.1w 15VB167 568 C~2lVh 2016 02 04.31413 03 07 21.995 +15 09 26.79 27.5w 15VB167 568 C~2lVh 2016 02 05.26985 03 07 22.432 +15 09 32.58 25.8w 15VB167 568 C~2lVh 2016 02 10.29068 03 07 26.225 +15 10 08.72 24.2w 15VB167 568 C~2lVh 2016 09 06.59240 03 21 30.802 +16 05 48.04 25.8w 15VB167 568 C~2lVh 2016 09 26.58845 03 20 47.437 +16 02 12.51 25.6w 15VB167 568 C~2lVh 2016 10 10.39070 03 19 58.860 +15 58 41.41 25.5w 15VB167 568 C~2lVh 2016 10 10.44903 03 19 58.619 +15 58 40.56 25.4w 15VB167 568 C~2lVh 2016 11 02.54892 03 18 13.600 +15 51 36.93 25.4w 15VB167 568 C~2lVh 2016 11 04.42405 03 18 04.292 +15 51 00.66 25.2w 15VB167 568 C~2lVh 2016 12 24.30148 03 14 12.623 +15 37 14.21 24.4w 15VB167 568 C~2lVh 2017 01 02.40371 03 13 43.585 +15 35 48.45 25.2w 15VB167 568 C~2lVh 2017 01 26.29235 03 13 02.096 +15 34 33.70 25.0w 15VB167 568 C~2lVh 2017 09 16.63393 03 27 00.046 +16 28 48.48 15VB167 568 C~2lVh 2017 09 17.59434 03 26 58.040 +16 28 38.69 15VB167 568 C~2lVh 2017 09 23.57295 03 26 43.723 +16 27 31.90 15VB167 568 C~2lVh 2017 12 16.35462 03 20 30.930 +16 04 15.29 25.3w 15VB167 568 C~2lVh 2017 12 16.35926 03 20 30.904 +16 04 15.03 25.8w 15VB167 568 C~2lVh
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 0.07 0.00 0.12
2 0.0003 -8.46 -0.14 0.03 -0.00
3 0.0006 -16.94 0.06 0.07 -0.10
4 0.0055 -150.32 0.07 1.95 0.09
5 0.7319 9439.75 -0.08 322.42 0.15
6 0.8032 9384.30 -0.23 245.28 -0.07
7 0.8193 9238.74 0.00 229.39 -0.12
8 0.8876 8139.68 0.20 176.16 -0.10
9 0.8903 8080.86 -0.12 174.67 -0.03
10 0.8905 8077.47 0.03 174.62 -0.01
11 0.9722 6019.63 0.09 154.70 0.03
12 0.9723 6016.31 -0.00 154.82 0.12
13 0.9724 6013.19 0.11 154.78 0.04
14 0.9809 5779.73 -0.15 155.90 0.04
15 0.9996 5262.16 -0.01 160.48 0.01
16 0.9997 5258.60 0.02 160.61 0.08
17 1.0517 3888.32 -0.08 188.88 0.00
18 1.0706 3438.25 0.25 204.53 -0.04
19 1.0708 3434.14 -0.16 204.77 0.03
20 1.1228 2435.48 -0.11 260.08 -0.04
21 1.1391 2209.48 -0.11 280.53 0.01
22 1.2157 1821.20 -0.01 387.44 -0.05
23 1.2183 1828.87 0.07 391.29 0.00
24 1.2321 1891.56 0.11 411.09 -0.10
25 1.8051 14564.14 0.14 402.26 0.00
26 1.8599 13901.53 0.22 354.52 -0.13
27 1.8977 13167.22 0.08 331.18 -0.02
28 1.8978 13163.63 0.05 331.26 0.11
29 1.9611 11585.05 -0.20 315.11 -0.04
30 1.9662 11445.50 -0.05 315.08 -0.15
31 2.1028 7993.35 0.01 396.87 0.15
32 2.1277 7565.52 -0.02 425.50 -0.08
33 2.1931 6967.04 -0.02 512.91 0.01
34 2.8319 19533.62 -0.05 537.16 -0.04
35 2.8346 19502.96 -0.07 534.88 -0.06
36 2.8509 19284.94 0.01 521.70 -0.02
37 3.0803 13702.37 0.08 534.86 0.20
38 3.0803 13701.94 -0.06 534.70 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.
15VB167 quality flag:2 Type: CLASSICAL 7:4EEE CLASSICAL axisobj 44.047 44.055 44.039 ecceobj 0.076 0.076 0.075 incobj 2.939 2.939 2.939 qmin 39.707 40.025 39.303 qmax 48.102 47.710 48.564 amean 43.727 43.726 43.721 amin 43.352 43.354 43.327 amax 44.135 44.113 44.136 emean 0.071 0.071 0.078 emin 0.051 0.058 0.058 emax 0.090 0.082 0.101 imean 1.489 1.449 1.453 imin 0.585 0.622 0.551 imax 2.192 2.172 2.138 excite_mean 0.076 0.075 0.082 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.090 libcent 0 -180.0 181.7 -180.0 libamp 0 -180.0 131.9 -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 151.4 141.7 190.8 kozaiamp 180.0 179.9 179.9