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: 15VC172 # Created Wed Jul 17 01:11:14 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 33 observations of 33 # Arc: 7.37y # First observation: 2015/08/11 # Last observation: 2022/12/26 # Chi-squared of fit: 5.15 DOF: 60 RMS: 0.07 # Min/Max residuals: -0.25 0.19 # Exact a, adot, b, bdot, g, gdot: 1.258606E-05 1.510875E-02 5.907170E-07 6.310814E-04 1.885086E-02 8.602307E-04 # Covariance matrix: 2.4402E-13 -1.1307E-13 8.8086E-15 -5.1932E-15 1.1385E-13 -1.2871E-12 -1.1307E-13 1.8654E-13 -4.7955E-15 8.2749E-15 1.9937E-14 2.0860E-12 8.8086E-15 -4.7955E-15 6.2855E-14 -1.4676E-14 5.5156E-15 -6.2552E-14 -5.1932E-15 8.2749E-15 -1.4676E-14 1.1243E-14 3.9718E-16 9.8751E-14 1.1385E-13 1.9937E-14 5.5156E-15 3.9718E-16 1.2616E-13 1.2193E-13 -1.2871E-12 2.0860E-12 -6.2552E-14 9.8751E-14 1.2193E-13 2.4873E-11 # lat0 lon0 xBary yBary zBary JD0 -3.340122 51.200471 1.014802 0.002858 0.046833 2457246.102289 # Heliocentric elements and errors Epoch: 2457246.5000 = 2015/08/12 Mean Anomaly: 163.64681 +/- 0.121 Argument of Peri: 137.23402 +/- 0.119 Long of Asc Node: 105.30398 +/- 0.005 Inclination: 4.06842 +/- 0.000 Eccentricity: 0.13964406 +/- 0.0000 Semi-Major Axis: 46.69193259 +/- 0.0041 Time of Perihelion: 2404272.0766 +/- 39.9 Perihelion: 40.17168139 +/- 0.0042 Aphelion: 53.21218379 +/- 0.0052 Period (y) 319.0590 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.94069118 +/- 0.0006 Ecliptic Y 40.59985726 +/- 0.0008 Ecliptic Z -3.09067845 +/- 0.0001 Ecliptic XDOT -0.00163072 +/- 0.0000 Ecliptic YDOT 0.00146999 +/- 0.0000 Ecliptic ZDOT 0.00008428 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 53.00819494 +/- 0.0007 Geocenter to KBO 53.04795429 +/- 0.0010 # Hcoef: 6.52
The following table shows the complete astrometric record for 15VC172. 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 (15VC172) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.60150 03 18 42.399 +14 50 03.14 24.0w 15VC172 568 C~2nwC 2015 09 06.61481 03 18 38.073 +14 48 14.07 24.1w 15VC172 568 C~2nwC 2015 10 08.44001 03 17 29.216 +14 42 17.84 23.8w 15VC172 568 C~2nwC 2015 10 08.49908 03 17 29.033 +14 42 17.03 24.0w 15VC172 568 C~2nwC 2015 11 07.34843 03 15 40.758 +14 34 40.96 23.7r 15VC172 568 C~2nwC 2015 11 07.39058 03 15 40.594 +14 34 40.31 23.7r 15VC172 568 C~2nwC 2015 11 07.43274 03 15 40.425 +14 34 39.71 23.7r 15VC172 568 C~2nwC 2015 11 10.51713 03 15 28.096 +14 33 51.52 23.8w 15VC172 568 C~2nwC 2015 11 10.54648 03 15 27.978 +14 33 51.02 24.0w 15VC172 568 C~2nwC 2015 11 17.36382 03 15 00.665 +14 32 06.37 23.8w 15VC172 568 C~2nwC 2015 11 17.41043 03 15 00.472 +14 32 05.72 23.7w 15VC172 568 C~2nwC 2015 12 06.37266 03 13 47.181 +14 27 42.05 24.2w 15VC172 568 C~2nwC 2015 12 13.30706 03 13 22.746 +14 26 20.84 24.1w 15VC172 568 C~2nwC 2015 12 13.36559 03 13 22.543 +14 26 20.08 23.9w 15VC172 568 C~2nwC 2016 01 01.36029 03 12 27.026 +14 23 37.14 24.0w 15VC172 568 C~2nwC 2016 01 07.30705 03 12 13.911 +14 23 06.70 23.8w 15VC172 568 C~2nwC 2016 02 04.34036 03 11 46.086 +14 23 13.30 23.8w 15VC172 568 C~2nwC 2016 02 11.22942 03 11 48.468 +14 23 53.42 24.0w 15VC172 568 C~2nwC 2016 09 25.60501 03 21 30.424 +15 00 32.64 24.1w 15VC172 568 C~2nwC 2016 10 10.53987 03 20 48.556 +14 57 18.72 24.0w 15VC172 568 C~2nwC 2016 10 10.58850 03 20 48.400 +14 57 18.04 24.1w 15VC172 568 C~2nwC 2016 11 02.50837 03 19 25.661 +14 51 34.15 15VC172 568 C~2nwC 2016 11 02.54312 03 19 25.520 +14 51 33.52 23.9w 15VC172 568 C~2nwC 2016 11 04.41826 03 19 18.145 +14 51 04.54 24.0w 15VC172 568 C~2nwC 2016 11 04.48449 03 19 17.884 +14 51 03.58 24.0w 15VC172 568 C~2nwC 2016 12 24.31885 03 16 13.450 +14 40 23.42 24.1w 15VC172 568 C~2nwC 2017 01 02.42106 03 15 49.643 +14 39 20.75 23.9w 15VC172 568 C~2nwC 2017 01 26.33541 03 15 13.440 +14 38 34.21 24.2w 15VC172 568 C~2nwC 2017 09 15.59463 03 25 18.814 +15 17 40.69 23.6w 15VC172 568 C~2nwC 2017 09 22.58081 03 25 05.503 +15 16 30.93 24.1w 15VC172 568 C~2nwC 2022 12 26.120150 03 37 01.660 +16 11 24.00 23.8G 15VC172 G37 C~69cT 2022 12 26.173170 03 37 01.474 +16 11 23.43 15VC172 G37 C~69cT 2022 12 26.236180 03 37 01.288 +16 11 22.64 15VC172 G37 C~69cT
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 -0.01
2 0.0712 0.00 -0.19 0.00 -0.06
3 0.1584 0.00 0.01 0.00 -0.01
4 0.1585 0.00 0.06 0.00 0.00
5 0.2402 0.00 0.02 0.00 -0.06
6 0.2404 0.00 0.11 0.00 -0.05
7 0.2405 0.00 0.14 0.00 0.01
8 0.2489 0.00 -0.03 0.00 0.02
9 0.2490 0.00 -0.01 0.00 -0.02
10 0.2677 0.00 -0.01 0.00 -0.05
11 0.2678 0.00 -0.06 0.00 0.00
12 0.3197 0.00 -0.02 0.00 0.05
13 0.3387 0.00 -0.01 0.00 0.06
14 0.3388 0.00 -0.02 0.00 -0.06
15 0.3909 0.00 0.00 0.00 0.03
16 0.4071 0.00 -0.05 0.00 0.02
17 0.4839 0.00 0.05 0.00 0.05
18 0.5027 0.00 -0.00 0.00 0.03
19 1.1253 0.00 0.09 0.00 0.10
20 1.1662 0.00 0.01 0.00 0.03
21 1.1663 0.00 0.04 0.00 0.04
22 1.2290 0.00 0.03 0.00 0.02
23 1.2291 0.00 -0.01 0.00 -0.07
24 1.2343 0.00 0.01 0.00 -0.04
25 1.2345 0.00 0.09 0.00 0.03
26 1.3709 0.00 0.00 0.00 0.03
27 1.3958 0.00 -0.05 0.00 -0.02
28 1.4613 0.00 -0.03 0.00 0.02
29 2.0972 0.00 -0.04 0.00 -0.11
30 2.1163 0.00 -0.02 0.00 0.06
31 7.3745 0.00 0.11 0.00 0.19
32 7.3746 0.00 -0.16 0.00 0.04
33 7.3748 0.00 0.04 0.00 -0.25
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.
15VC172 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 47.102 47.102 47.102 ecceobj 0.132 0.132 0.132 incobj 4.070 4.070 4.070 qmin 39.752 39.757 39.734 qmax 54.220 54.217 54.237 amean 46.808 46.808 46.808 amin 46.406 46.403 46.421 amax 47.247 47.244 47.255 emean 0.134 0.134 0.134 emin 0.122 0.122 0.121 emax 0.148 0.148 0.148 imean 2.344 2.344 2.344 imin 1.904 1.904 1.902 imax 2.780 2.779 2.780 excite_mean 0.140 0.140 0.140 fracstop 1.000 1.000 1.000 cjmean 3.112 3.112 3.112 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 186.4 186.4 186.4 kozaiamp 179.9 180.0 180.0