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: 15VB166 # Created Sun Dec 22 02:10:33 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 41 observations of 41 # Arc: 5.31y # First observation: 2015/08/20 # Last observation: 2020/12/09 # Chi-squared of fit: 5.98 DOF: 76 RMS: 0.07 # Min/Max residuals: -0.19 0.14 # Exact a, adot, b, bdot, g, gdot: 1.979725E-05 3.975112E-02 2.083587E-07 4.626348E-04 3.115827E-02 -1.965794E-04 # Covariance matrix: 1.5512E-13 -1.0311E-13 1.1545E-15 -1.0597E-15 6.3980E-14 -5.0733E-13 -1.0311E-13 1.9619E-13 -1.0378E-15 2.1709E-15 1.6574E-14 1.0246E-12 1.1545E-15 -1.0378E-15 5.4731E-14 -1.9646E-14 6.8539E-16 -6.2688E-15 -1.0597E-15 2.1709E-15 -1.9646E-14 1.8889E-14 1.5864E-16 1.2559E-14 6.3980E-14 1.6574E-14 6.8539E-16 1.5864E-16 8.5885E-14 6.6408E-14 -5.0733E-13 1.0246E-12 -6.2688E-15 1.2559E-14 6.6408E-14 5.9300E-12 # lat0 lon0 xBary yBary zBary JD0 -0.827407 53.713363 1.012798 -0.000743 -0.060477 2457255.045359 # Heliocentric elements and errors Epoch: 2457254.5000 = 2015/08/20 Mean Anomaly: 355.72982 +/- 0.007 Argument of Peri: 316.72158 +/- 0.017 Long of Asc Node: 104.07394 +/- 0.008 Inclination: 1.04520 +/- 0.000 Eccentricity: 0.32686644 +/- 0.0000 Semi-Major Axis: 47.64718261 +/- 0.0035 Time of Perihelion: 2458679.4441 +/- 13.1 Perihelion: 32.07291742 +/- 0.0030 Aphelion: 63.22144781 +/- 0.0050 Period (y) 328.9001 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 19.84030593 +/- 0.0002 Ecliptic Y 25.31657473 +/- 0.0002 Ecliptic Z -0.46342450 +/- 0.0000 Ecliptic XDOT -0.00282737 +/- 0.0000 Ecliptic YDOT 0.00204737 +/- 0.0000 Ecliptic ZDOT 0.00004095 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.16804375 +/- 0.0002 Geocenter to KBO 32.09423212 +/- 0.0003 # Hcoef: 8.67
The following table shows the complete astrometric record for 15VB166. 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 (15VB166) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.54457 03 26 11.422 +17 53 59.10 24.1w 15VB166 568 C~2lVd 2015 08 20.55007 03 26 11.430 +17 53 59.07 24.1w 15VB166 568 C~2lVd 2015 09 07.60044 03 26 09.764 +17 53 29.20 23.8w 15VB166 568 C~2lVd 2015 09 12.44733 03 26 02.520 +17 52 56.64 24.0w 15VB166 568 C~2lVd 2015 10 07.49766 03 24 43.199 +17 47 40.25 24.0w 15VB166 568 C~2lVd 2015 10 07.55607 03 24 42.938 +17 47 39.25 24.0w 15VB166 568 C~2lVd 2015 10 09.53675 03 24 34.007 +17 47 04.95 24.0w 15VB166 568 C~2lVd 2015 11 06.33360 03 22 01.202 +17 37 27.25 23.6r 15VB166 568 C~2lVd 2015 11 06.39716 03 22 00.818 +17 37 25.88 23.6r 15VB166 568 C~2lVd 2015 11 06.40423 03 22 00.758 +17 37 25.55 23.5r 15VB166 568 C~2lVd 2015 11 06.47375 03 22 00.333 +17 37 24.16 23.7r 15VB166 568 C~2lVd 2015 11 07.49015 03 21 54.094 +17 37 00.77 23.8w 15VB166 568 C~2lVd 2015 11 17.47136 03 20 52.148 +17 33 10.38 23.8w 15VB166 568 C~2lVd 2015 11 17.55969 03 20 51.577 +17 33 08.23 23.7w 15VB166 568 C~2lVd 2015 12 06.33759 03 18 58.620 +17 26 12.76 24.0w 15VB166 568 C~2lVd 2015 12 06.47504 03 18 57.834 +17 26 09.98 23.9w 15VB166 568 C~2lVd 2015 12 31.35875 03 16 58.967 +17 19 05.88 24.0w 15VB166 568 C~2lVd 2016 01 07.38812 03 16 35.665 +17 17 47.21 24.1w 15VB166 568 C~2lVd 2016 01 07.42286 03 16 35.548 +17 17 47.16 24.1w 15VB166 568 C~2lVd 2016 01 08.24465 03 16 33.207 +17 17 39.28 24.0w 15VB166 568 C~2lVd 2016 02 04.37827 03 16 01.369 +17 16 25.63 24.0w 15VB166 568 C~2lVd 2016 02 11.24103 03 16 08.315 +17 17 05.53 24.2w 15VB166 568 C~2lVd 2016 09 07.61412 03 35 30.748 +18 28 15.14 15VB166 568 C~2lVd 2016 09 25.62123 03 34 52.949 +18 25 44.90 23.9w 15VB166 568 C~2lVd 2016 09 27.53935 03 34 46.770 +18 25 21.59 24.0w 15VB166 568 C~2lVd 2016 10 09.53365 03 33 59.572 +18 22 28.13 24.0w 15VB166 568 C~2lVd 2016 10 09.60571 03 33 59.238 +18 22 26.90 24.1w 15VB166 568 C~2lVd 2016 10 10.56080 03 33 54.896 +18 22 11.12 24.0w 15VB166 568 C~2lVd 2016 10 10.60927 03 33 54.668 +18 22 10.30 24.0w 15VB166 568 C~2lVd 2016 10 28.47058 03 32 20.932 +18 16 34.61 23.9w 15VB166 568 C~2lVd 2016 10 28.49380 03 32 20.791 +18 16 34.17 24.0w 15VB166 568 C~2lVd 2016 10 29.53251 03 32 14.731 +18 16 12.65 23.9w 15VB166 568 C~2lVd 2016 11 02.58549 03 31 50.658 +18 14 47.33 23.8w 15VB166 568 C~2lVd 2016 12 24.34518 03 26 49.103 +17 57 22.74 24.0w 15VB166 568 C~2lVd 2017 01 27.31949 03 25 16.413 +17 52 39.89 24.0w 15VB166 568 C~2lVd 2017 01 27.32464 03 25 16.410 +17 52 39.89 24.1w 15VB166 568 C~2lVd 2017 09 15.62735 03 44 46.873 +19 00 41.55 24.2w 15VB166 568 C~2lVd 2017 09 22.60498 03 44 32.091 +18 59 46.53 15VB166 568 C~2lVd 2020 12 09.277170 04 06 46.475 +20 11 09.07 23.6G 15VB166 G37 C~4UIf 2020 12 09.320040 04 06 46.226 +20 11 08.54 15VB166 G37 C~4UIf 2020 12 09.355900 04 06 45.995 +20 11 07.99 15VB166 G37 C~4UIf
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 0.08 0.00 0.02
2 0.0000 0.00 0.12 0.00 -0.02
3 0.0494 0.00 -0.02 0.00 0.01
4 0.0627 0.00 -0.02 0.00 -0.01
5 0.1313 0.00 0.00 0.00 -0.02
6 0.1314 0.00 0.06 0.00 -0.03
7 0.1369 0.00 -0.04 0.00 0.04
8 0.2130 0.00 -0.09 0.00 0.01
9 0.2131 0.00 0.08 0.00 0.08
10 0.2132 0.00 -0.16 0.00 -0.09
11 0.2134 0.00 -0.03 0.00 0.11
12 0.2161 0.00 -0.02 0.00 0.01
13 0.2435 0.00 0.06 0.00 0.06
14 0.2437 0.00 -0.14 0.00 -0.03
15 0.2951 0.00 -0.04 0.00 0.01
16 0.2955 0.00 0.08 0.00 0.09
17 0.3636 0.00 0.11 0.00 -0.05
18 0.3829 0.00 0.12 0.00 -0.16
19 0.3830 0.00 -0.07 0.00 0.14
20 0.3852 0.00 0.04 0.00 -0.01
21 0.4595 0.00 -0.10 0.00 -0.02
22 0.4783 0.00 0.04 0.00 -0.00
23 1.0515 0.00 -0.01 0.00 0.02
24 1.1008 0.00 -0.08 0.00 0.03
25 1.1061 0.00 0.03 0.00 -0.04
26 1.1389 0.00 0.09 0.00 0.02
27 1.1391 0.00 0.07 0.00 -0.03
28 1.1417 0.00 -0.01 0.00 -0.06
29 1.1419 0.00 -0.02 0.00 -0.07
30 1.1908 0.00 0.03 0.00 -0.01
31 1.1908 0.00 -0.03 0.00 0.03
32 1.1937 0.00 -0.05 0.00 -0.00
33 1.2048 0.00 0.04 0.00 -0.07
34 1.3465 0.00 0.06 0.00 -0.04
35 1.4395 0.00 0.00 0.00 0.01
36 1.4395 0.00 0.02 0.00 0.02
37 2.0728 0.00 -0.00 0.00 0.01
38 2.0919 0.00 0.02 0.00 0.04
39 5.3052 0.00 -0.19 0.00 -0.11
40 5.3053 0.00 0.14 0.00 0.05
41 5.3054 0.00 0.07 0.00 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.
15VB166 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.263 48.263 48.263 ecceobj 0.334 0.334 0.334 incobj 1.046 1.046 1.046 qmin 31.562 31.553 31.535 qmax 64.878 64.896 64.896 amean 47.797 47.797 47.797 amin 47.268 47.271 47.269 amax 48.453 48.482 48.465 emean 0.326 0.326 0.326 emin 0.314 0.314 0.314 emax 0.340 0.339 0.340 imean 0.441 0.430 0.437 imin 0.220 0.177 0.168 imax 0.589 0.590 0.603 excite_mean 0.326 0.326 0.326 fracstop 1.000 1.000 1.000 cjmean 3.012 3.012 3.012 libcent 0 72.8 71.9 71.7 libamp 0 23.6 22.8 20.6 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 189.2 187.9 187.1 kozaiamp 180.0 180.0 180.0