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: 15VB173 # Created Tue Apr 1 01:10:43 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 46 observations of 46 # Arc: 10.12y # First observation: 2014/11/17 # Last observation: 2024/12/31 # Chi-squared of fit: 12.83 DOF: 86 RMS: 0.09 # Min/Max residuals: -0.21 0.23 # Exact a, adot, b, bdot, g, gdot: 1.545376E-05 2.337985E-02 1.133840E-06 1.224963E-03 2.417823E-02 5.391882E-04 # Covariance matrix: 1.7449E-13 -1.1633E-13 6.6427E-15 -5.8139E-15 -2.5512E-14 -4.4481E-13 -1.1633E-13 9.8870E-14 -5.9245E-15 5.2158E-15 1.6718E-14 3.9910E-13 6.6427E-15 -5.9245E-15 5.7646E-14 -1.2561E-14 -1.1008E-15 -2.5444E-14 -5.8139E-15 5.2158E-15 -1.2561E-14 6.2819E-15 5.4893E-16 2.2554E-14 -2.5512E-14 1.6718E-14 -1.1008E-15 5.4893E-16 8.6210E-14 4.1345E-14 -4.4481E-13 3.9910E-13 -2.5444E-14 2.2554E-14 4.1345E-14 1.7261E-12 # lat0 lon0 xBary yBary zBary JD0 -1.289306 48.684432 -0.099576 -0.022005 -0.984206 2456978.777218 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 73.93066 +/- 0.079 Argument of Peri: 260.64993 +/- 0.083 Long of Asc Node: 71.56842 +/- 0.001 Inclination: 3.25421 +/- 0.000 Eccentricity: 0.02379294 +/- 0.0001 Semi-Major Axis: 42.60098330 +/- 0.0022 Time of Perihelion: 2436121.5909 +/- 22.5 Perihelion: 41.58738046 +/- 0.0034 Aphelion: 43.61458614 +/- 0.0034 Period (y) 278.0594 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.87089807 +/- 0.0003 Ecliptic Y 31.86329695 +/- 0.0004 Ecliptic Z -0.93058598 +/- 0.0000 Ecliptic XDOT -0.00195037 +/- 0.0000 Ecliptic YDOT 0.00179108 +/- 0.0000 Ecliptic ZDOT 0.00013740 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.34290274 +/- 0.0004 Geocenter to KBO 41.35954176 +/- 0.0005 # Hcoef: 7.95
The following table shows the complete astrometric record for 15VB173. 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 (15VB173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27644 03 06 23.128 +16 08 36.75 23.9r 15VB173 568 C~2nwF 2014 11 17.49897 03 06 22.011 +16 08 32.61 24.4r 15VB173 568 C~2nwF 2014 11 19.28749 03 06 13.302 +16 07 58.64 23.9r 15VB173 568 C~2nwF 2014 11 23.39103 03 05 53.476 +16 06 41.78 24.2r 15VB173 568 C~2nwG 2015 08 11.59273 03 16 12.224 +16 52 48.83 24.5w 15VB173 568 C~2nwG 2015 09 06.62350 03 16 08.986 +16 52 08.65 24.7w 15VB173 568 C~2nwG 2015 09 12.51312 03 15 59.593 +16 51 26.74 24.5w 15VB173 568 C~2nwG 2015 10 07.43992 03 14 48.559 +16 46 33.25 24.4w 15VB173 568 C~2nwG 2015 10 07.44703 03 14 48.518 +16 46 33.25 24.5w 15VB173 568 C~2nwG 2015 10 08.45165 03 14 44.730 +16 46 18.00 24.3w 15VB173 568 C~2nwG 2015 10 08.51072 03 14 44.497 +16 46 17.09 24.5w 15VB173 568 C~2nwG 2015 11 07.35903 03 12 30.760 +16 37 33.48 24.0r 15VB173 568 C~2nwG 2015 11 07.40112 03 12 30.554 +16 37 32.64 24.1r 15VB173 568 C~2nwG 2015 11 07.44330 03 12 30.342 +16 37 31.84 24.2r 15VB173 568 C~2nwG 2015 11 10.52886 03 12 15.119 +16 36 33.40 24.3w 15VB173 568 C~2nwG 2015 11 17.37547 03 11 41.336 +16 34 24.59 24.4w 15VB173 568 C~2nwG 2015 11 17.42215 03 11 41.096 +16 34 23.71 24.5w 15VB173 568 C~2nwG 2015 12 06.38432 03 10 11.330 +16 28 48.09 24.1w 15VB173 568 C~2nwG 2015 12 13.31874 03 09 41.669 +16 27 00.24 24.3w 15VB173 568 C~2nwG 2015 12 13.37723 03 09 41.413 +16 26 59.33 24.3w 15VB173 568 C~2nwG 2016 01 01.37186 03 08 35.021 +16 23 08.77 24.4w 15VB173 568 C~2nwG 2016 01 07.31862 03 08 19.765 +16 22 20.28 24.3w 15VB173 568 C~2nwG 2016 02 04.29505 03 07 51.155 +16 21 32.30 24.7w 15VB173 568 C~2nwG 2016 02 04.30157 03 07 51.137 +16 21 32.36 24.7w 15VB173 568 C~2nwG 2016 02 10.28486 03 07 54.884 +16 22 02.48 24.6w 15VB173 568 C~2nwG 2016 09 06.60560 03 21 22.585 +17 16 28.54 24.6w 15VB173 568 C~2nwG 2016 09 26.59656 03 20 39.551 +17 13 31.62 24.4w 15VB173 568 C~2nwG 2016 10 10.40230 03 19 51.833 +17 10 25.14 24.4w 15VB173 568 C~2nwG 2016 10 10.46065 03 19 51.597 +17 10 24.26 24.5w 15VB173 568 C~2nwG 2016 11 02.52573 03 18 09.007 +17 03 54.71 24.4w 15VB173 568 C~2nwG 2016 11 04.40084 03 17 59.901 +17 03 20.42 24.4w 15VB173 568 C~2nwG 2016 12 24.29598 03 14 13.264 +16 49 42.61 24.5w 15VB173 568 C~2nwG 2016 12 24.31334 03 14 13.199 +16 49 42.47 24.6w 15VB173 568 C~2nwG 2017 01 02.39822 03 13 44.707 +16 48 08.95 24.6w 15VB173 568 C~2nwG 2017 01 02.41556 03 13 44.660 +16 48 08.80 24.7w 15VB173 568 C~2nwG 2017 01 26.32220 03 13 03.369 +16 46 20.30 24.6w 15VB173 568 C~2nwG 2017 01 26.32908 03 13 03.358 +16 46 20.32 24.8w 15VB173 568 C~2nwG 2017 09 17.60038 03 26 19.977 +17 39 06.02 15VB173 568 C~2nwG 2017 09 23.57901 03 26 05.754 +17 38 10.24 15VB173 568 C~2nwG 2017 09 23.58734 03 26 05.726 +17 38 10.17 23.0w 15VB173 568 C~2nwG 2017 09 24.59522 03 26 03.038 +17 38 00.00 25.0w 15VB173 568 C~2nwG 2017 12 16.36856 03 20 01.048 +17 16 13.07 24.5w 15VB173 568 C~2nwG 2017 12 16.39181 03 20 00.969 +17 16 12.68 24.5w 15VB173 568 C~2nwG 2024 12 31.123240 03 56 35.146 +19 51 03.38 24.1G 15VB173 G37 C~8cQu 2024 12 31.174450 03 56 34.942 +19 51 02.87 15VB173 G37 C~8cQu 2024 12 31.225150 03 56 34.766 +19 51 02.28 15VB173 G37 C~8cQu
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 -0.01 0.00 -0.08
2 0.0006 0.00 -0.18 0.00 0.02
3 0.0055 0.00 -0.21 0.00 0.01
4 0.0167 0.00 -0.06 0.00 -0.05
5 0.7319 0.00 0.08 0.00 0.01
6 0.8031 0.00 0.22 0.00 -0.01
7 0.8193 0.00 0.01 0.00 0.02
8 0.8875 0.00 0.18 0.00 -0.11
9 0.8875 0.00 -0.02 0.00 -0.00
10 0.8903 0.00 0.03 0.00 -0.06
11 0.8904 0.00 -0.02 0.00 -0.08
12 0.9722 0.00 0.16 0.00 0.14
13 0.9723 0.00 0.22 0.00 0.09
14 0.9724 0.00 0.20 0.00 0.08
15 0.9808 0.00 -0.13 0.00 -0.05
16 0.9996 0.00 -0.02 0.00 0.00
17 0.9997 0.00 -0.11 0.00 -0.01
18 1.0516 0.00 -0.00 0.00 -0.05
19 1.0706 0.00 0.11 0.00 0.05
20 1.0708 0.00 -0.05 0.00 0.00
21 1.1228 0.00 -0.16 0.00 -0.02
22 1.1391 0.00 0.01 0.00 0.04
23 1.2157 0.00 0.23 0.00 0.06
24 1.2157 0.00 -0.07 0.00 0.10
25 1.2321 0.00 0.11 0.00 0.04
26 1.8051 0.00 -0.03 0.00 0.00
27 1.8599 0.00 -0.06 0.00 0.00
28 1.8977 0.00 0.04 0.00 0.02
29 1.8978 0.00 -0.02 0.00 0.01
30 1.9610 0.00 -0.04 0.00 0.18
31 1.9661 0.00 -0.01 0.00 0.03
32 2.1027 0.00 0.07 0.00 -0.10
33 2.1028 0.00 0.02 0.00 -0.04
34 2.1276 0.00 -0.11 0.00 -0.02
35 2.1277 0.00 -0.07 0.00 -0.01
36 2.1931 0.00 0.07 0.00 0.01
37 2.1932 0.00 -0.02 0.00 0.03
38 2.8346 0.00 -0.04 0.00 0.00
39 2.8509 0.00 0.01 0.00 -0.20
40 2.8510 0.00 -0.07 0.00 -0.19
41 2.8537 0.00 -0.05 0.00 0.02
42 3.0803 0.00 -0.12 0.00 0.10
43 3.0804 0.00 0.14 0.00 0.03
44 10.1214 0.00 -0.05 0.00 0.04
45 10.1216 0.00 -0.13 0.00 0.03
46 10.1217 0.00 0.17 0.00 -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.
15VB173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.926 42.926 42.926 ecceobj 0.031 0.031 0.031 incobj 3.250 3.250 3.250 qmin 40.398 40.382 40.395 qmax 45.009 45.006 45.006 amean 42.608 42.608 42.607 amin 42.282 42.282 42.280 amax 42.940 42.939 42.939 emean 0.031 0.031 0.031 emin 0.006 0.006 0.006 emax 0.049 0.049 0.048 imean 1.303 1.303 1.303 imin 0.056 0.056 0.056 imax 2.272 2.272 2.271 excite_mean 0.041 0.041 0.041 fracstop 1.000 1.000 1.000 cjmean 3.083 3.083 3.083 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 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 176.3 176.1 176.4 kozaiamp 179.9 180.0 180.0