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: 15VS164 # Created Wed Apr 24 01:17:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 28 # Arc: 5.24y # First observation: 2015/08/20 # Last observation: 2020/11/14 # Chi-squared of fit: 5.74 DOF: 50 RMS: 0.08 # Min/Max residuals: -0.14 0.21 # Exact a, adot, b, bdot, g, gdot: 1.610329E-05 2.962558E-02 -6.598812E-06 -1.111721E-02 2.848209E-02 -2.707571E-03 # Covariance matrix: 2.1313E-13 -1.0842E-13 -1.3576E-14 4.0428E-14 1.1697E-13 -6.3022E-13 -1.0842E-13 2.9229E-13 4.9167E-14 -1.2100E-13 5.0200E-14 1.9668E-12 -1.3576E-14 4.9167E-14 8.1479E-14 -4.7689E-14 1.1597E-14 3.6636E-13 4.0428E-14 -1.2100E-13 -4.7689E-14 8.3987E-14 -2.0410E-14 -9.0222E-13 1.1697E-13 5.0200E-14 1.1597E-14 -2.0410E-14 1.6348E-13 3.6297E-13 -6.3022E-13 1.9668E-12 3.6636E-13 -9.0222E-13 3.6297E-13 1.4663E-11 # lat0 lon0 xBary yBary zBary JD0 -1.496047 54.353789 1.013398 -0.001157 -0.049338 2457255.056669 # Heliocentric elements and errors Epoch: 2457254.5000 = 2015/08/20 Mean Anomaly: 319.73521 +/- 0.026 Argument of Peri: 237.89097 +/- 0.041 Long of Asc Node: 228.75792 +/- 0.000 Inclination: 20.73777 +/- 0.000 Eccentricity: 0.15576251 +/- 0.0001 Semi-Major Axis: 39.37203337 +/- 0.0026 Time of Perihelion: 2467347.1007 +/- 10.3 Perihelion: 33.23934653 +/- 0.0042 Aphelion: 45.50472021 +/- 0.0047 Period (y) 247.0529 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 21.30253337 +/- 0.0003 Ecliptic Y 27.97089983 +/- 0.0004 Ecliptic Z -0.91685374 +/- 0.0000 Ecliptic XDOT -0.00248406 +/- 0.0000 Ecliptic YDOT 0.00141915 +/- 0.0000 Ecliptic ZDOT -0.00106143 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.17122026 +/- 0.0004 Geocenter to KBO 35.10986102 +/- 0.0005 # Hcoef: 8.57
The following table shows the complete astrometric record for 15VS164. 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 (15VS164) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.55588 03 29 29.053 +17 24 30.58 24.5w 15VS164 568 C~2lVY 2015 09 07.60452 03 29 26.556 +17 21 36.07 24.0w 15VS164 568 C~2lVY 2015 09 12.45550 03 29 19.646 +17 20 26.99 24.3w 15VS164 568 C~2lVY 2015 10 07.50351 03 28 05.560 +17 12 18.26 24.4w 15VS164 568 C~2lVY 2015 10 07.56195 03 28 05.317 +17 12 16.93 24.2w 15VS164 568 C~2lVY 2015 10 09.54258 03 27 57.019 +17 11 30.04 24.3w 15VS164 568 C~2lVY 2015 11 06.31779 03 25 34.980 +16 59 13.45 24.0r 15VS164 568 C~2lVY 2015 11 06.38117 03 25 34.614 +16 59 11.85 24.1r 15VS164 568 C~2lVY 2015 11 06.45191 03 25 34.204 +16 59 09.70 23.3r 15VS164 568 C~2lVY 2015 11 06.46851 03 25 34.100 +16 59 09.21 24.1r 15VS164 568 C~2lVY 2015 11 17.45383 03 24 30.519 +16 53 59.29 24.2w 15VS164 568 C~2lVY 2015 11 17.54213 03 24 29.991 +16 53 56.75 23.8w 15VS164 568 C~2lVY 2015 12 06.32006 03 22 43.896 +16 45 28.73 24.2w 15VS164 568 C~2lVY 2015 12 06.45375 03 22 43.174 +16 45 25.47 24.1w 15VS164 568 C~2lVY 2015 12 31.34139 03 20 49.539 +16 36 17.79 23.7w 15VS164 568 C~2lVY 2016 01 07.37071 03 20 26.623 +16 34 22.15 24.5w 15VS164 568 C~2lVY 2016 01 08.23304 03 20 24.165 +16 34 09.43 24.3w 15VS164 568 C~2lVY 2016 02 11.27002 03 19 52.943 +16 30 13.15 24.3w 15VS164 568 C~2lVY 2016 09 25.61718 03 36 26.744 +17 03 16.51 24.4w 15VS164 568 C~2lVY 2016 10 10.55675 03 35 32.235 +16 57 45.80 24.1w 15VS164 568 C~2lVY 2016 10 10.60523 03 35 32.016 +16 57 44.62 24.2w 15VS164 568 C~2lVY 2016 10 28.47637 03 34 04.547 +16 50 05.09 24.4w 15VS164 568 C~2lVY 2016 10 29.53828 03 33 58.785 +16 49 36.39 24.2w 15VS164 568 C~2lVY 2016 10 29.55586 03 33 58.683 +16 49 35.86 24.4w 15VS164 568 C~2lVY 2016 11 02.59127 03 33 36.356 +16 47 45.87 24.5w 15VS164 568 C~2lVY 2017 01 27.33320 03 27 22.980 +16 18 52.74 24.4w 15VS164 568 C~2lVY 2020 11 14.386760 04 03 45.772 +15 39 35.90 24.1G 15VS164 G37 C~4O28 2020 11 14.447570 04 03 45.432 +15 39 34.65 15VS164 G37 C~4O28
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 0.05 0.00 0.10
2 0.0494 0.00 0.02 0.00 0.05
3 0.0627 0.00 -0.09 0.00 0.06
4 0.1313 0.00 -0.08 0.00 0.02
5 0.1314 0.00 -0.03 0.00 0.06
6 0.1369 0.00 0.01 0.00 0.01
7 0.2129 0.00 0.06 0.00 -0.02
8 0.2131 0.00 0.07 0.00 0.15
9 0.2133 0.00 0.09 0.00 -0.02
10 0.2133 0.00 -0.02 0.00 -0.04
11 0.2434 0.00 0.00 0.00 0.05
12 0.2436 0.00 -0.09 0.00 0.01
13 0.2950 0.00 0.01 0.00 -0.02
14 0.2954 0.00 0.12 0.00 0.14
15 0.3635 0.00 0.02 0.00 0.13
16 0.3828 0.00 -0.04 0.00 -0.08
17 0.3852 0.00 -0.00 0.00 -0.04
18 0.4783 0.00 0.04 0.00 0.04
19 1.1008 0.00 0.05 0.00 -0.07
20 1.1417 0.00 0.04 0.00 -0.03
21 1.1418 0.00 -0.05 0.00 -0.03
22 1.1907 0.00 -0.04 0.00 -0.12
23 1.1937 0.00 0.07 0.00 -0.09
24 1.1937 0.00 0.00 0.00 -0.14
25 1.2048 0.00 -0.05 0.00 -0.10
26 1.4395 0.00 -0.06 0.00 -0.14
27 5.2370 0.00 -0.14 0.00 -0.06
28 5.2372 0.00 0.17 0.00 0.21
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.
15VS164 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.693 39.693 39.693 ecceobj 0.157 0.157 0.157 incobj 20.660 20.660 20.660 qmin 31.947 31.947 31.945 qmax 47.514 47.511 47.517 amean 39.455 39.455 39.455 amin 39.063 39.063 39.063 amax 39.880 39.880 39.880 emean 0.161 0.161 0.161 emin 0.124 0.124 0.124 emax 0.193 0.193 0.193 imean 21.453 21.453 21.453 imin 20.742 20.741 20.742 imax 22.222 22.222 22.222 excite_mean 0.400 0.400 0.400 fracstop 1.000 1.000 1.000 cjmean 2.866 2.866 2.866 libcent 0 181.3 181.4 181.3 libamp 0 79.5 79.3 79.5 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 175.9 175.9 175.9 kozaiamp 180.0 180.0 180.0