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: 15VM166 # Created Sun Dec 22 02:10:34 2024 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 2.85y # First observation: 2014/11/17 # Last observation: 2017/09/23 Preliminary a, adot, b, bdot, g, gdot: 0.000367 0.030519 0.000003 0.000270 0.026309 0.000000 # Chi-squared of fit: 6.49 DOF: 70 RMS: 0.07 # Min/Max residuals: -0.21 0.19 # Exact a, adot, b, bdot, g, gdot: 1.870903E-05 3.132701E-02 2.060516E-07 2.775262E-04 2.678509E-02 6.982845E-03 # Covariance matrix: 3.9620E-13 -4.6288E-13 1.6555E-15 -2.9380E-15 -1.3878E-13 -3.6926E-12 -4.6288E-13 6.9741E-13 -2.9561E-15 5.2329E-15 2.5108E-13 6.5803E-12 1.6555E-15 -2.9561E-15 2.0404E-13 -1.2106E-13 -1.6195E-15 -3.3001E-14 -2.9380E-15 5.2329E-15 -1.2106E-13 8.9260E-14 2.3752E-15 5.7166E-14 -1.3878E-13 2.5108E-13 -1.6195E-15 2.3752E-15 2.5863E-13 3.1121E-12 -3.6926E-12 6.5803E-12 -3.3001E-14 5.7166E-14 3.1121E-12 7.2204E-11 # lat0 lon0 xBary yBary zBary JD0 -0.652522 49.037733 -0.097489 -0.011051 -0.984551 2456979.004798 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 15.56220 +/- 0.011 Argument of Peri: 266.26078 +/- 0.045 Long of Asc Node: 100.65404 +/- 0.029 Inclination: 0.81278 +/- 0.000 Eccentricity: 0.44090707 +/- 0.0003 Semi-Major Axis: 63.08277024 +/- 0.0183 Time of Perihelion: 2449059.4677 +/- 4.4 Perihelion: 35.26913068 +/- 0.0189 Aphelion: 90.89640981 +/- 0.0308 Period (y) 501.0422 +/- 0.22 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.04196771 +/- 0.0005 Ecliptic Y 28.99975317 +/- 0.0005 Ecliptic Z -0.42519910 +/- 0.0000 Ecliptic XDOT -0.00195422 +/- 0.0000 Ecliptic YDOT 0.00263341 +/- 0.0000 Ecliptic ZDOT 0.00002034 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.31796739 +/- 0.0005 Geocenter to KBO 37.33420782 +/- 0.0007 # Hcoef: 8.28
The following table shows the complete astrometric record for 15VM166. 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 (15VM166) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.50402 03 07 04.689 +16 51 09.22 23.9r 15VM166 568 C~2lVe 2014 11 19.29385 03 06 55.394 +16 50 31.81 24.1r 15VM166 568 C~2lVf 2014 11 23.39737 03 06 34.200 +16 49 07.17 24.0r 15VM166 568 C~2lVf 2015 09 07.63311 03 18 54.060 +17 39 05.64 24.4w 15VM166 568 C~2lVf 2015 09 12.49674 03 18 46.571 +17 38 33.25 24.5w 15VM166 568 C~2lVf 2015 10 07.54436 03 17 33.991 +17 33 40.18 24.3w 15VM166 568 C~2lVf 2015 10 07.60373 03 17 33.759 +17 33 39.28 24.3w 15VM166 568 C~2lVf 2015 10 09.58362 03 17 25.897 +17 33 08.20 24.4w 15VM166 568 C~2lVf 2015 11 07.33788 03 15 09.265 +17 24 14.67 24.1r 15VM166 568 C~2lVf 2015 11 07.38006 03 15 09.037 +17 24 13.79 23.9r 15VM166 568 C~2lVf 2015 11 07.42224 03 15 08.814 +17 24 13.01 24.1r 15VM166 568 C~2lVf 2015 11 10.50536 03 14 52.659 +17 23 10.31 24.3w 15VM166 568 C~2lVf 2015 11 17.35218 03 14 16.691 +17 20 51.30 24.2w 15VM166 568 C~2lVf 2015 11 17.39878 03 14 16.445 +17 20 50.32 24.1w 15VM166 568 C~2lVf 2015 12 06.36096 03 12 40.785 +17 14 43.18 24.3w 15VM166 568 C~2lVf 2015 12 06.49848 03 12 40.126 +17 14 40.66 24.4w 15VM166 568 C~2lVf 2016 01 01.34872 03 10 58.734 +17 08 20.04 24.4w 15VM166 568 C~2lVf 2016 01 07.41130 03 10 42.519 +17 07 21.80 24.4w 15VM166 568 C~2lVf 2016 01 07.42868 03 10 42.455 +17 07 21.50 24.6w 15VM166 568 C~2lVf 2016 01 08.25624 03 10 40.531 +17 07 14.74 24.4w 15VM166 568 C~2lVf 2016 02 05.28768 03 10 15.844 +17 06 08.41 24.5w 15VM166 568 C~2lVf 2016 02 10.30807 03 10 20.271 +17 06 32.17 24.6w 15VM166 568 C~2lVf 2016 09 07.57363 03 25 52.104 +18 06 03.89 15VM166 568 C~2lVf 2016 09 07.62568 03 25 52.031 +18 06 03.57 15VM166 568 C~2lVf 2016 09 26.58416 03 25 11.852 +18 03 23.61 24.4w 15VM166 568 C~2lVf 2016 10 05.48792 03 24 42.112 +18 01 29.69 24.6w 15VM166 568 C~2lVf 2016 10 07.49247 03 24 34.579 +18 01 01.08 24.4w 15VM166 568 C~2lVf 2016 10 07.58817 03 24 34.185 +18 00 59.55 24.4w 15VM166 568 C~2lVf 2016 10 09.49252 03 24 26.761 +18 00 31.39 24.4w 15VM166 568 C~2lVf 2016 10 09.54522 03 24 26.545 +18 00 30.58 24.4w 15VM166 568 C~2lVf 2016 10 09.56525 03 24 26.468 +18 00 30.25 24.2w 15VM166 568 C~2lVf 2016 10 09.61729 03 24 26.245 +18 00 29.41 24.2w 15VM166 568 C~2lVf 2016 11 02.49681 03 22 35.832 +17 53 35.02 24.5w 15VM166 568 C~2lVf 2016 11 04.47292 03 22 25.700 +17 52 57.22 24.2w 15VM166 568 C~2lVf 2016 12 25.28177 03 18 21.734 +17 38 00.44 24.3w 15VM166 568 C~2lVf 2016 12 28.42845 03 18 10.726 +17 37 21.24 24.5w 15VM166 568 C~2lVf 2017 09 16.60340 03 32 33.449 +18 30 53.20 24.5w 15VM166 568 C~2lVf 2017 09 23.54254 03 32 17.972 +18 29 54.59 24.4w 15VM166 568 C~2lVf
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 0.0049 -138.59 0.10 0.38 -0.10
3 0.0161 -454.43 -0.05 1.98 -0.02
4 0.8053 10569.84 -0.03 79.04 0.07
5 0.8186 10457.77 0.04 75.34 0.01
6 0.8872 9377.06 -0.07 60.62 -0.00
7 0.8873 9373.61 0.00 60.61 0.00
8 0.8928 9256.72 -0.05 59.77 -0.01
9 0.9715 7227.12 0.17 55.00 0.07
10 0.9716 7223.74 0.10 55.01 0.05
11 0.9717 7220.45 0.13 55.09 0.11
12 0.9802 6980.57 -0.03 55.33 -0.04
13 0.9989 6446.65 -0.05 56.74 0.00
14 0.9990 6442.99 -0.03 56.72 -0.05
15 1.0509 5023.56 -0.07 65.13 0.03
16 1.0513 5013.78 -0.04 65.21 0.00
17 1.1221 3511.32 -0.04 85.76 -0.03
18 1.1387 3271.72 0.15 91.91 0.07
19 1.1387 3270.75 -0.18 91.86 0.01
20 1.1410 3242.36 -0.01 92.74 0.07
21 1.2178 2883.55 0.08 123.80 -0.04
22 1.2315 2951.08 -0.07 129.65 0.04
23 1.8072 16780.63 0.09 133.58 -0.05
24 1.8073 16779.54 0.01 133.52 -0.08
25 1.8592 16181.02 -0.02 121.29 -0.07
26 1.8836 15739.21 0.12 116.95 -0.01
27 1.8891 15627.38 0.19 116.14 0.02
28 1.8893 15621.52 -0.09 116.07 -0.04
29 1.8946 15511.32 -0.06 115.33 -0.01
30 1.8947 15508.11 -0.09 115.31 -0.02
31 1.8948 15506.96 -0.03 115.27 -0.06
32 1.8949 15503.65 -0.21 115.25 -0.06
33 1.9603 13866.23 -0.05 110.83 0.00
34 1.9657 13716.07 -0.03 110.86 -0.02
35 2.1048 10105.42 0.16 135.36 0.04
36 2.1134 9942.89 -0.03 138.17 0.05
37 2.8312 22741.31 0.03 182.17 0.00
38 2.8502 22510.78 -0.01 178.06 0.06
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.
15VM166 quality flag:3 Type: 3:1EE 3:1EE 3:1EE axisobj 64.098 64.158 64.038 ecceobj 0.450 0.451 0.450 incobj 0.813 0.813 0.813 qmin 34.634 34.606 34.630 qmax 92.970 93.092 92.921 amean 62.633 62.634 62.631 amin 61.463 61.401 61.533 amax 64.106 64.158 64.067 emean 0.437 0.437 0.436 emin 0.424 0.424 0.425 emax 0.450 0.451 0.450 imean 0.786 0.780 0.775 imin 0.669 0.594 0.685 imax 0.895 0.933 0.865 excite_mean 0.437 0.437 0.437 fracstop 1.000 1.000 1.000 cjmean 3.075 3.075 3.076 libcent 0 180.0 179.5 180.3 libamp 0 167.2 171.2 160.7 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 174.7 162.3 294.3 kozaiamp 180.0 180.0 59.8