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: 15VW164 # Created Fri Nov 22 02:10:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 36 observations of 36 # Arc: 8.39y # First observation: 2015/08/20 # Last observation: 2024/01/09 # Chi-squared of fit: 5.56 DOF: 66 RMS: 0.07 # Min/Max residuals: -0.21 0.16 # Exact a, adot, b, bdot, g, gdot: 1.794933E-05 3.246985E-02 -2.434596E-07 -6.419615E-04 2.895387E-02 4.338189E-03 # Covariance matrix: 1.8666E-13 -8.0861E-14 -2.0735E-16 2.0123E-15 9.3289E-14 -3.5350E-13 -8.0861E-14 1.5753E-13 2.1532E-15 -3.7253E-15 2.2438E-14 6.5722E-13 -2.0735E-16 2.1532E-15 5.3865E-14 -1.0873E-14 1.1568E-15 9.1127E-15 2.0123E-15 -3.7253E-15 -1.0873E-14 8.2872E-15 -2.8445E-16 -1.6515E-14 9.3289E-14 2.2438E-14 1.1568E-15 -2.8445E-16 1.1116E-13 5.1759E-14 -3.5350E-13 6.5722E-13 9.1127E-15 -1.6515E-14 5.1759E-14 2.9129E-12 # lat0 lon0 xBary yBary zBary JD0 -0.765248 52.787098 1.011637 -0.000900 -0.077375 2457255.076589 # Heliocentric elements and errors Epoch: 2457254.5000 = 2015/08/20 Mean Anomaly: 34.02293 +/- 0.008 Argument of Peri: 167.52792 +/- 0.012 Long of Asc Node: 197.61047 +/- 0.004 Inclination: 1.38239 +/- 0.000 Eccentricity: 0.15751887 +/- 0.0001 Semi-Major Axis: 39.39451858 +/- 0.0027 Time of Perihelion: 2448719.1491 +/- 2.2 Perihelion: 33.18913836 +/- 0.0035 Aphelion: 45.59989880 +/- 0.0041 Period (y) 247.2646 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 21.73422039 +/- 0.0002 Ecliptic Y 26.95282236 +/- 0.0003 Ecliptic Z -0.46126230 +/- 0.0000 Ecliptic XDOT -0.00219960 +/- 0.0000 Ecliptic YDOT 0.00217651 +/- 0.0000 Ecliptic ZDOT -0.00006612 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.62714840 +/- 0.0003 Geocenter to KBO 34.53764560 +/- 0.0004 # Hcoef: 8.06
The following table shows the complete astrometric record for 15VW164. 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 (15VW164) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.57580 03 22 21.441 +17 43 42.27 23.7w 15VW164 568 C~2lVY 2015 09 07.61675 03 22 14.955 +17 42 46.67 23.7w 15VW164 568 C~2lVY 2015 10 07.52101 03 20 47.134 +17 36 31.90 23.7w 15VW164 568 C~2lVY 2015 10 07.58040 03 20 46.871 +17 36 30.81 23.7w 15VW164 568 C~2lVY 2015 10 09.56029 03 20 38.154 +17 35 55.48 23.7w 15VW164 568 C~2lVY 2015 11 06.33360 03 18 11.323 +17 26 12.23 23.4r 15VW164 568 C~2lVY 2015 11 06.39716 03 18 10.946 +17 26 10.68 23.3r 15VW164 568 C~2lVY 2015 11 06.40423 03 18 10.903 +17 26 10.63 23.4r 15VW164 568 C~2lVY 2015 11 06.47375 03 18 10.495 +17 26 08.93 23.4r 15VW164 568 C~2lVY 2015 11 07.49015 03 18 04.542 +17 25 45.65 23.5w 15VW164 568 C~2lVY 2015 11 17.47136 03 17 05.687 +17 21 55.58 23.6w 15VW164 568 C~2lVY 2015 11 17.55969 03 17 05.149 +17 21 53.45 23.6w 15VW164 568 C~2lVY 2015 12 06.33759 03 15 18.340 +17 14 59.74 23.4w 15VW164 568 C~2lVY 2015 12 06.47504 03 15 17.595 +17 14 56.83 23.7w 15VW164 568 C~2lVY 2016 01 01.34872 03 13 22.134 +17 07 38.64 23.7w 15VW164 568 C~2lVY 2016 01 07.41130 03 13 03.454 +17 06 29.99 23.7w 15VW164 568 C~2lVY 2016 01 07.42868 03 13 03.410 +17 06 29.86 23.7w 15VW164 568 C~2lVY 2016 01 08.25624 03 13 01.179 +17 06 21.82 23.7w 15VW164 568 C~2lVY 2016 02 05.28768 03 12 30.850 +17 04 50.45 23.7w 15VW164 568 C~2lVY 2016 02 10.30807 03 12 35.297 +17 05 13.37 23.8w 15VW164 568 C~2lVY 2016 09 07.59099 03 29 52.562 +18 08 18.29 23.8w 15VW164 568 C~2lVY 2016 09 27.52301 03 29 05.886 +18 04 58.70 23.7w 15VW164 568 C~2lVY 2016 10 05.50531 03 28 36.103 +18 03 00.38 23.9w 15VW164 568 C~2lVY 2016 10 07.50982 03 28 27.756 +18 02 27.76 23.8w 15VW164 568 C~2lVY 2016 10 07.60551 03 28 27.331 +18 02 26.11 23.8w 15VW164 568 C~2lVY 2016 10 09.51019 03 28 19.090 +18 01 54.01 23.6w 15VW164 568 C~2lVY 2016 10 09.58259 03 28 18.771 +18 01 52.75 23.8w 15VW164 568 C~2lVY 2016 11 02.49681 03 26 15.274 +17 54 01.31 23.6w 15VW164 568 C~2lVY 2016 11 04.47292 03 26 03.897 +17 53 18.45 23.6w 15VW164 568 C~2lVY 2016 12 28.44773 03 21 14.706 +17 35 31.76 23.6w 15VW164 568 C~2lVY 2017 01 27.29772 03 20 05.282 +17 31 38.62 23.7w 15VW164 568 C~2lVY 2017 12 13.37172 03 30 06.351 +18 05 30.44 23.6w 15VW164 568 C~2lVY 2017 12 13.40930 03 30 06.147 +18 05 29.79 23.8w 15VW164 568 C~2lVY 2024 01 09.145270 04 13 49.730 +20 07 20.68 23.5G 15VW164 G37 C~7gt1 2024 01 09.259300 04 13 49.278 +20 07 19.81 15VW164 G37 C~7gt1 2024 01 09.373690 04 13 48.803 +20 07 18.80 15VW164 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 -0.03
2 0.0494 0.00 -0.06 0.00 0.01
3 0.1313 0.00 -0.02 0.00 0.05
4 0.1314 0.00 -0.02 0.00 0.01
5 0.1369 0.00 -0.01 0.00 0.03
6 0.2129 0.00 0.09 0.00 0.16
7 0.2131 0.00 0.09 0.00 0.05
8 0.2131 0.00 0.07 0.00 0.16
9 0.2133 0.00 0.15 0.00 0.05
10 0.2161 0.00 -0.01 0.00 0.07
11 0.2434 0.00 0.03 0.00 0.02
12 0.2436 0.00 -0.11 0.00 -0.06
13 0.2950 0.00 -0.00 0.00 0.05
14 0.2954 0.00 0.05 0.00 -0.02
15 0.3663 0.00 -0.04 0.00 0.01
16 0.3828 0.00 -0.09 0.00 -0.12
17 0.3829 0.00 -0.02 0.00 -0.07
18 0.3852 0.00 0.08 0.00 0.01
19 0.4619 0.00 -0.04 0.00 0.02
20 0.4757 0.00 -0.05 0.00 -0.03
21 1.0514 0.00 -0.02 0.00 -0.03
22 1.1059 0.00 0.08 0.00 -0.07
23 1.1278 0.00 -0.01 0.00 -0.11
24 1.1333 0.00 0.06 0.00 -0.02
25 1.1336 0.00 -0.06 0.00 -0.07
26 1.1388 0.00 -0.07 0.00 -0.01
27 1.1390 0.00 0.04 0.00 -0.02
28 1.2044 0.00 -0.03 0.00 -0.03
29 1.2098 0.00 0.01 0.00 -0.03
30 1.3576 0.00 -0.01 0.00 0.05
31 1.4393 0.00 0.02 0.00 -0.00
32 2.3157 0.00 0.10 0.00 -0.01
33 2.3158 0.00 0.01 0.00 0.02
34 8.3876 0.00 -0.21 0.00 -0.15
35 8.3879 0.00 0.12 0.00 0.05
36 8.3882 0.00 0.05 0.00 0.14
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.
15VW164 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.825 39.825 39.825 ecceobj 0.167 0.167 0.167 incobj 1.376 1.376 1.376 qmin 32.617 32.617 32.617 qmax 46.707 46.707 46.707 amean 39.457 39.457 39.457 amin 39.108 39.108 39.108 amax 39.855 39.855 39.855 emean 0.156 0.156 0.156 emin 0.140 0.140 0.140 emax 0.172 0.172 0.172 imean 2.347 2.347 2.347 imin 1.860 1.860 1.860 imax 2.872 2.872 2.872 excite_mean 0.161 0.161 0.161 fracstop 1.000 1.000 1.000 cjmean 3.022 3.022 3.022 libcent 0 180.4 180.4 180.4 libamp 0 35.1 35.2 35.1 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 179.4 179.3 179.4 kozaiamp 180.0 180.0 180.0