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: 15VM165 # Created Sun Dec 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 2.25y # First observation: 2015/09/12 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000136 0.037494 -0.000011 0.004290 0.031435 0.000000 # Chi-squared of fit: 10.56 DOF: 60 RMS: 0.10 # Min/Max residuals: -0.30 0.24 # Exact a, adot, b, bdot, g, gdot: 1.862371E-05 3.699298E-02 2.452263E-06 4.231578E-03 3.123434E-02 -3.088044E-03 # Covariance matrix: 1.9158E-13 -4.6975E-14 6.8853E-16 6.6228E-15 1.2446E-13 1.0085E-12 -4.6975E-14 4.0682E-13 -9.2951E-15 5.0212E-14 1.7591E-13 6.9609E-12 6.8853E-16 -9.2951E-15 1.0484E-13 -8.8027E-14 -3.3241E-15 -2.2634E-13 6.6228E-15 5.0212E-14 -8.8027E-14 1.3117E-13 3.0639E-14 1.2283E-12 1.2446E-13 1.7591E-13 -3.3241E-15 3.0639E-14 2.3151E-13 4.3583E-12 1.0085E-12 6.9609E-12 -2.2634E-13 1.2283E-12 4.3583E-12 1.7033E-10 # lat0 lon0 xBary yBary zBary JD0 -3.268113 51.501176 0.893545 -0.026691 -0.469974 2457278.005699 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 334.34270 +/- 0.054 Argument of Peri: 12.32949 +/- 0.091 Long of Asc Node: 76.31539 +/- 0.002 Inclination: 7.21374 +/- 0.000 Eccentricity: 0.20774554 +/- 0.0002 Semi-Major Axis: 39.45203787 +/- 0.0047 Time of Perihelion: 2463721.2623 +/- 13.4 Perihelion: 31.25605315 +/- 0.0103 Aphelion: 47.64802259 +/- 0.0112 Period (y) 247.8063 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 20.88581841 +/- 0.0003 Ecliptic Y 24.82755937 +/- 0.0004 Ecliptic Z -1.82509403 +/- 0.0000 Ecliptic XDOT -0.00269464 +/- 0.0000 Ecliptic YDOT 0.00181715 +/- 0.0000 Ecliptic ZDOT 0.00038580 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.49547789 +/- 0.0004 Geocenter to KBO 32.01604322 +/- 0.0005 # Hcoef: 10.08
The following table shows the complete astrometric record for 15VM165. 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 (15VM165) followed by the observatory code and reference code for the source of the astrometry.
2015 09 12.50491 03 19 49.854 +14 58 51.50 25.2w 15VM165 568 C~2lVb 2015 10 07.42821 03 18 25.582 +14 52 25.39 25.1w 15VM165 568 C~2lVb 2015 10 08.44001 03 18 20.919 +14 52 06.18 25.3w 15VM165 568 C~2lVb 2015 10 08.49908 03 18 20.637 +14 52 05.12 25.3w 15VM165 568 C~2lVb 2015 11 07.34843 03 15 34.540 +14 41 21.77 25.3r 15VM165 568 C~2lVb 2015 11 07.39058 03 15 34.300 +14 41 20.76 24.9r 15VM165 568 C~2lVb 2015 11 07.43274 03 15 34.025 +14 41 19.83 24.7r 15VM165 568 C~2lVb 2015 11 10.51713 03 15 14.961 +14 40 10.87 25.7w 15VM165 568 C~2lVb 2015 11 10.54648 03 15 14.755 +14 40 10.40 25.2w 15VM165 568 C~2lVb 2015 11 17.36382 03 14 32.480 +14 37 41.42 25.2w 15VM165 568 C~2lVb 2015 11 17.41043 03 14 32.199 +14 37 40.43 25.3w 15VM165 568 C~2lVb 2015 12 06.37266 03 12 39.160 +14 31 29.71 25.3w 15VM165 568 C~2lVb 2015 12 13.30706 03 12 01.841 +14 29 39.21 25.2w 15VM165 568 C~2lVb 2015 12 13.36559 03 12 01.545 +14 29 38.21 25.2w 15VM165 568 C~2lVb 2016 01 01.36029 03 10 38.553 +14 26 13.22 25.4w 15VM165 568 C~2lVb 2016 01 07.30705 03 10 19.710 +14 25 42.78 25.4w 15VM165 568 C~2lVb 2016 02 11.22942 03 09 54.182 +14 28 55.93 25.4w 15VM165 568 C~2lVb 2016 09 07.58521 03 28 13.006 +15 45 39.98 25.4w 15VM165 568 C~2lVb 2016 09 25.60907 03 27 29.909 +15 42 15.45 25.9w 15VM165 568 C~2lVb 2016 09 27.51883 03 27 23.280 +15 41 47.15 25.1w 15VM165 568 C~2lVb 2016 09 29.49637 03 27 16.029 +15 41 16.80 26.4w 15VM165 568 C~2lVb 2016 10 07.50403 03 26 42.771 +15 39 02.36 26.2w 15VM165 568 C~2lVb 2016 10 09.50422 03 26 33.562 +15 38 26.04 25.2w 15VM165 568 C~2lVb 2016 10 09.57681 03 26 33.226 +15 38 24.86 25.6w 15VM165 568 C~2lVb 2016 10 10.54805 03 26 28.640 +15 38 06.78 25.4w 15VM165 568 C~2lVb 2016 10 10.59680 03 26 28.400 +15 38 05.80 25.4w 15VM165 568 C~2lVb 2016 11 04.46713 03 24 10.150 +15 29 38.20 25.2w 15VM165 568 C~2lVb 2016 12 24.33677 03 19 22.506 +15 14 55.56 25.3w 15VM165 568 C~2lVb 2016 12 28.44224 03 19 05.118 +15 14 16.35 25.7w 15VM165 568 C~2lVb 2017 01 02.43952 03 18 46.171 +15 13 38.43 26.0w 15VM165 568 C~2lVb 2017 01 26.34976 03 17 54.366 +15 13 24.34 25.0w 15VM165 568 C~2lVb 2017 09 15.62132 03 36 22.935 +16 29 48.64 25.2w 15VM165 568 C~2lVb 2017 12 13.36708 03 28 43.379 +16 04 16.70 25.5w 15VM165 568 C~2lVb
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 0.02 0.00 -0.06
2 0.0682 -1279.65 -0.09 -59.12 -0.30
3 0.0710 -1349.92 -0.02 -60.24 -0.02
4 0.0712 -1354.14 -0.02 -60.21 0.06
5 0.1529 -3848.03 -0.07 -56.55 0.13
6 0.1530 -3851.65 0.24 -56.62 -0.04
7 0.1531 -3855.75 0.09 -56.47 0.01
8 0.1616 -4140.89 0.06 -50.81 -0.21
9 0.1616 -4143.90 -0.20 -50.49 0.05
10 0.1803 -4775.32 -0.09 -33.75 0.05
11 0.1804 -4779.51 0.09 -33.64 0.01
12 0.2324 -6461.51 -0.10 40.36 0.02
13 0.2513 -7013.96 -0.10 77.08 0.21
14 0.2515 -7018.37 0.04 77.25 0.03
15 0.3035 -8236.63 0.13 199.66 0.10
16 0.3198 -8509.03 0.00 243.26 -0.13
17 0.4154 -8815.42 0.02 528.58 0.01
18 0.9886 7753.50 -0.07 886.97 0.01
19 1.0379 7099.15 -0.07 842.63 -0.00
20 1.0432 6999.28 -0.05 838.92 -0.06
21 1.0486 6890.19 0.18 835.48 -0.02
22 1.0705 6391.00 0.10 824.49 0.13
23 1.0760 6252.99 -0.14 822.39 0.03
24 1.0762 6248.00 0.06 822.46 0.13
25 1.0788 6179.27 0.02 821.43 -0.05
26 1.0790 6175.67 -0.03 821.34 -0.10
27 1.1471 4113.19 0.15 829.66 0.06
28 1.2836 -135.42 -0.09 1033.41 0.02
29 1.2948 -388.69 0.01 1060.19 0.07
30 1.3085 -663.44 -0.17 1094.11 -0.02
31 1.3740 -1391.53 0.13 1273.94 0.08
32 2.0099 15268.84 0.02 1749.90 -0.04
33 2.2529 8454.71 -0.03 1862.04 -0.13
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.
15VM165 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.835 39.843 39.828 ecceobj 0.211 0.212 0.211 incobj 7.204 7.205 7.205 qmin 30.848 30.858 30.861 qmax 48.383 48.464 48.379 amean 39.455 39.455 39.455 amin 39.074 39.074 39.074 amax 39.892 39.912 39.856 emean 0.198 0.198 0.198 emin 0.180 0.179 0.180 emax 0.216 0.216 0.216 imean 6.058 6.054 6.061 imin 5.502 5.499 5.501 imax 6.922 6.906 6.927 excite_mean 0.225 0.225 0.225 fracstop 1.000 1.000 1.000 cjmean 2.995 2.995 2.995 libcent 0 178.9 180.1 180.4 libamp 0 51.9 54.3 49.0 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 180.5 181.2 180.7 kozaiamp 180.0 180.0 180.0