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: 15VB170 # Created Wed Jul 17 01:11:12 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 32 observations of 32 # Arc: 8.39y # First observation: 2015/08/20 # Last observation: 2024/01/09 # Chi-squared of fit: 8.22 DOF: 58 RMS: 0.09 # Min/Max residuals: -0.29 0.16 # Exact a, adot, b, bdot, g, gdot: 1.495875E-05 2.204794E-02 4.668871E-07 5.351295E-04 2.304447E-02 3.850479E-04 # Covariance matrix: 2.3970E-13 -1.3892E-13 5.7853E-15 -3.7925E-15 9.3602E-14 -8.8604E-13 -1.3892E-13 1.7618E-13 -3.6867E-15 4.6090E-15 2.3848E-15 1.0977E-12 5.7853E-15 -3.6867E-15 6.6024E-14 -1.3551E-14 3.5570E-15 -2.6581E-14 -3.7925E-15 4.6090E-15 -1.3551E-14 8.5936E-15 -3.4494E-16 3.0444E-14 9.3602E-14 2.3848E-15 3.5570E-15 -3.4494E-16 1.1377E-13 -6.1669E-14 -8.8604E-13 1.0977E-12 -2.6581E-14 3.0444E-14 -6.1669E-14 7.2364E-12 # lat0 lon0 xBary yBary zBary JD0 -2.625024 53.823710 1.012888 -0.002563 -0.058796 2457255.064109 # Heliocentric elements and errors Epoch: 2457254.5000 = 2015/08/20 Mean Anomaly: 310.90681 +/- 0.613 Argument of Peri: 346.83444 +/- 0.631 Long of Asc Node: 115.65485 +/- 0.004 Inclination: 2.93667 +/- 0.000 Eccentricity: 0.01072722 +/- 0.0001 Semi-Major Axis: 43.76691678 +/- 0.0032 Time of Perihelion: 2471676.8539 +/- 180.3 Perihelion: 43.29741950 +/- 0.0044 Aphelion: 44.23641405 +/- 0.0044 Period (y) 289.5524 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.43586502 +/- 0.0004 Ecliptic Y 34.44086242 +/- 0.0005 Ecliptic Z -1.98738783 +/- 0.0000 Ecliptic XDOT -0.00208774 +/- 0.0000 Ecliptic YDOT 0.00157906 +/- 0.0000 Ecliptic ZDOT 0.00006147 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.46237613 +/- 0.0005 Geocenter to KBO 43.39436852 +/- 0.0006 # Hcoef: 7.25
The following table shows the complete astrometric record for 15VB170. 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 (15VB170) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.56332 03 28 29.232 +16 11 04.05 23.7w 15VB170 568 C~2nw4 2015 09 07.60859 03 28 23.832 +16 09 42.70 23.7w 15VB170 568 C~2nw4 2015 09 12.45964 03 28 17.393 +16 09 03.39 23.9w 15VB170 568 C~2nw4 2015 11 06.32308 03 25 07.746 +15 55 39.54 23.6r 15VB170 568 C~2nw4 2015 11 06.38643 03 25 07.439 +15 55 38.48 23.7r 15VB170 568 C~2nw4 2015 11 06.45719 03 25 07.097 +15 55 37.18 23.7r 15VB170 568 C~2nw4 2015 11 07.47849 03 25 02.264 +15 55 19.01 23.8w 15VB170 568 C~2nw4 2015 12 06.32589 03 22 45.893 +15 47 12.37 24.1w 15VB170 568 C~2nw4 2015 12 06.45961 03 22 45.292 +15 47 10.43 23.8w 15VB170 568 C~2nw4 2016 01 07.37652 03 20 50.505 +15 41 24.15 23.9w 15VB170 568 C~2nw4 2016 01 08.23883 03 20 48.362 +15 41 18.79 23.8w 15VB170 568 C~2nw4 2016 02 05.32968 03 20 14.974 +15 41 03.06 23.8w 15VB170 568 C~2nw4 2016 02 11.27580 03 20 17.425 +15 41 37.27 24.1w 15VB170 568 C~2nw4 2016 09 07.60834 03 33 29.409 +16 29 49.39 15VB170 568 C~2nw4 2016 09 27.53529 03 32 50.897 +16 26 34.29 23.9w 15VB170 568 C~2nw4 2016 10 07.52743 03 32 19.828 +16 24 20.43 24.0w 15VB170 568 C~2nw4 2016 10 07.53507 03 32 19.799 +16 24 20.23 24.2w 15VB170 568 C~2nw4 2016 10 07.62286 03 32 19.481 +16 24 18.99 24.0w 15VB170 568 C~2nw4 2016 10 09.52781 03 32 12.794 +16 23 51.12 23.7w 15VB170 568 C~2nw4 2016 10 09.59992 03 32 12.529 +16 23 50.01 23.7w 15VB170 568 C~2nw4 2016 10 28.47637 03 30 55.351 +16 18 46.50 23.8w 15VB170 568 C~2nw4 2016 10 29.53828 03 30 50.541 +16 18 28.36 23.9w 15VB170 568 C~2nw4 2016 10 29.55586 03 30 50.461 +16 18 28.04 24.0w 15VB170 568 C~2nw4 2016 11 02.59127 03 30 31.880 +16 17 18.66 23.7w 15VB170 568 C~2nw4 2016 12 24.35153 03 26 38.273 +16 04 12.66 23.8w 15VB170 568 C~2nw4 2017 01 27.33320 03 25 21.163 +16 01 29.26 23.4w 15VB170 568 C~2nw4 2017 09 15.62132 03 38 26.350 +16 48 33.32 23.7w 15VB170 568 C~2nw4 2017 09 22.59895 03 38 12.720 +16 47 26.38 23.7w 15VB170 568 C~2nw4 2017 12 13.35764 03 32 31.922 +16 26 56.64 15VB170 568 C~2nw4 2024 01 09.103490 04 02 13.440 +18 16 04.80 23.6G 15VB170 G37 C~7gt1 2024 01 09.215720 04 02 13.094 +18 16 04.02 15VB170 G37 C~7gt1 2024 01 09.331350 04 02 12.706 +18 16 03.56 15VB170 G37 C~7gt1
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 0.04 0.00 -0.01
2 0.0494 0.00 0.01 0.00 0.05
3 0.0627 0.00 0.14 0.00 -0.03
4 0.2129 0.00 -0.06 0.00 -0.07
5 0.2131 0.00 -0.10 0.00 -0.01
6 0.2133 0.00 -0.11 0.00 -0.05
7 0.2161 0.00 0.09 0.00 0.03
8 0.2950 0.00 0.08 0.00 -0.00
9 0.2954 0.00 0.16 0.00 0.06
10 0.3828 0.00 0.03 0.00 0.05
11 0.3851 0.00 -0.29 0.00 -0.28
12 0.4621 0.00 0.05 0.00 -0.01
13 0.4783 0.00 0.08 0.00 -0.02
14 1.0515 0.00 -0.05 0.00 0.01
15 1.1060 0.00 -0.01 0.00 0.02
16 1.1334 0.00 -0.01 0.00 0.15
17 1.1334 0.00 -0.04 0.00 0.06
18 1.1336 0.00 -0.16 0.00 0.09
19 1.1388 0.00 0.02 0.00 0.02
20 1.1390 0.00 0.01 0.00 -0.02
21 1.1907 0.00 -0.02 0.00 0.01
22 1.1936 0.00 0.01 0.00 0.01
23 1.1937 0.00 0.03 0.00 -0.00
24 1.2047 0.00 0.14 0.00 0.11
25 1.3464 0.00 0.06 0.00 -0.01
26 1.4395 0.00 0.05 0.00 0.05
27 2.0727 0.00 -0.04 0.00 -0.05
28 2.0918 0.00 0.07 0.00 -0.07
29 2.3157 0.00 -0.02 0.00 -0.03
30 8.3875 0.00 -0.19 0.00 -0.04
31 8.3878 0.00 0.16 0.00 -0.13
32 8.3881 0.00 0.01 0.00 0.15
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.
15VB170 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.177 44.177 44.177 ecceobj 0.016 0.016 0.016 incobj 2.938 2.938 2.938 qmin 42.198 42.197 42.199 qmax 45.652 45.650 45.653 amean 43.846 43.846 43.846 amin 43.508 43.506 43.511 amax 44.185 44.185 44.186 emean 0.018 0.018 0.018 emin 0.001 0.001 0.001 emax 0.033 0.033 0.033 imean 1.672 1.672 1.672 imin 0.990 0.990 0.990 imax 2.296 2.296 2.296 excite_mean 0.035 0.035 0.035 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 libcent 0 172.3 173.6 171.1 libamp 0 171.5 172.7 170.4 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 178.6 178.8 178.6 kozaiamp 180.0 179.9 179.9