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: 15VF172 # Created Mon Apr 28 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 31 observations of 31 # Arc: 3.07y # First observation: 2014/11/19 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000040 0.023238 -0.000002 -0.000474 0.023827 0.000000 # Chi-squared of fit: 9.19 DOF: 56 RMS: 0.10 # Min/Max residuals: -0.33 0.24 # Exact a, adot, b, bdot, g, gdot: 1.487513E-05 2.332286E-02 -2.199325E-07 -4.767959E-04 2.400861E-02 -3.424023E-04 # Covariance matrix: 8.4088E-13 -9.0446E-13 -5.6102E-15 1.2558E-14 -4.2266E-13 -9.0852E-12 -9.0446E-13 1.1152E-12 7.7946E-15 -1.6729E-14 5.3594E-13 1.2133E-11 -5.6102E-15 7.7946E-15 2.5565E-13 -1.2834E-13 2.7312E-15 9.1581E-14 1.2558E-14 -1.6729E-14 -1.2834E-13 7.9418E-14 -8.7906E-15 -1.9587E-13 -4.2266E-13 5.3594E-13 2.7312E-15 -8.7906E-15 3.9688E-13 6.2481E-12 -9.0852E-12 1.2133E-11 9.1581E-14 -1.9587E-13 6.2481E-12 1.4209E-10 # lat0 lon0 xBary yBary zBary JD0 -2.746002 49.364016 -0.123538 -0.046854 -0.980105 2456980.839918 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 325.21517 +/- 0.957 Argument of Peri: 282.93314 +/- 1.016 Long of Asc Node: 163.04595 +/- 0.013 Inclination: 2.92540 +/- 0.000 Eccentricity: 0.02436493 +/- 0.0003 Semi-Major Axis: 43.49280161 +/- 0.0029 Time of Perihelion: 2467103.5605 +/- 278.5 Perihelion: 42.43310261 +/- 0.0132 Aphelion: 44.55250060 +/- 0.0132 Period (y) 286.8364 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.63671779 +/- 0.0007 Ecliptic Y 32.39818070 +/- 0.0008 Ecliptic Z -1.99550031 +/- 0.0001 Ecliptic XDOT -0.00204966 +/- 0.0000 Ecliptic YDOT 0.00169555 +/- 0.0000 Ecliptic ZDOT -0.00005234 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.63111897 +/- 0.0008 Geocenter to KBO 41.65172584 +/- 0.0011 # Hcoef: 8.60
The following table shows the complete astrometric record for 15VF172. 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 (15VF172) followed by the observatory code and reference code for the source of the astrometry.
2014 11 19.33914 03 10 44.231 +14 55 30.42 24.8r 15VF172 568 C~2nwC 2015 08 11.60150 03 20 36.124 +15 37 08.73 25.2w 15VF172 568 C~2nwC 2015 09 12.50491 03 20 27.578 +15 34 23.47 25.1w 15VF172 568 C~2nwC 2015 10 08.44001 03 19 16.284 +15 28 23.04 25.0w 15VF172 568 C~2nwC 2015 10 08.49908 03 19 16.067 +15 28 21.95 25.1w 15VF172 568 C~2nwC 2015 11 07.34843 03 17 05.640 +15 19 04.97 24.8r 15VF172 568 C~2nwC 2015 11 07.39058 03 17 05.430 +15 19 04.28 24.9r 15VF172 568 C~2nwC 2015 11 07.43274 03 17 05.219 +15 19 03.60 25.1r 15VF172 568 C~2nwC 2015 11 10.51713 03 16 50.289 +15 18 03.52 24.6w 15VF172 568 C~2nwC 2015 11 10.54648 03 16 50.148 +15 18 03.19 25.0w 15VF172 568 C~2nwC 2015 12 06.37266 03 14 47.871 +15 10 17.16 24.9w 15VF172 568 C~2nwC 2015 12 06.52203 03 14 47.171 +15 10 14.83 24.6w 15VF172 568 C~2nwC 2016 01 01.36029 03 13 11.377 +15 04 54.52 24.6w 15VF172 568 C~2nwC 2016 02 04.34036 03 12 25.182 +15 03 51.45 25.3w 15VF172 568 C~2nwC 2016 02 11.22942 03 12 29.164 +15 04 34.21 24.9w 15VF172 568 C~2nwC 2016 09 07.56785 03 25 53.318 +15 53 35.21 15VF172 568 C~2nwC 2016 09 27.50655 03 25 11.597 +15 49 46.34 25.3w 15VF172 568 C~2nwC 2016 10 10.44325 03 24 28.186 +15 46 25.90 25.4w 15VF172 568 C~2nwC 2016 10 10.50202 03 24 27.954 +15 46 24.99 25.3w 15VF172 568 C~2nwC 2016 10 10.51973 03 24 27.883 +15 46 24.76 25.0w 15VF172 568 C~2nwC 2016 11 02.51417 03 22 48.236 +15 39 27.79 25.1w 15VF172 568 C~2nwC 2016 11 04.38927 03 22 39.305 +15 38 52.16 25.2w 15VF172 568 C~2nwC 2016 12 24.33677 03 18 54.437 +15 25 20.90 24.7w 15VF172 568 C~2nwC 2016 12 28.44224 03 18 40.703 +15 24 39.29 25.5w 15VF172 568 C~2nwC 2017 01 02.43952 03 18 25.652 +15 23 56.02 25.6w 15VF172 568 C~2nwC 2017 01 26.34976 03 17 42.917 +15 22 34.74 25.5w 15VF172 568 C~2nwC 2017 09 16.63393 03 30 59.956 +16 10 12.71 25.4w 15VF172 568 C~2nwC 2017 09 17.59434 03 30 58.091 +16 10 02.46 24.8w 15VF172 568 C~2nwC 2017 09 23.57295 03 30 44.705 +16 08 52.50 25.3w 15VF172 568 C~2nwC 2017 12 13.36708 03 24 59.846 +15 46 27.97 25.4w 15VF172 568 C~2nwC 2017 12 16.35926 03 24 47.401 +15 45 47.75 25.0w 15VF172 568 C~2nwC
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 0.10 0.00 -0.02
2 0.7262 8925.81 0.06 160.93 0.08
3 0.8136 8763.68 -0.13 32.87 0.02
4 0.8846 7673.44 0.08 -49.57 -0.03
5 0.8848 7670.12 0.13 -49.81 -0.15
6 0.9665 5701.90 -0.02 -97.44 -0.18
7 0.9666 5698.79 -0.04 -97.31 -0.05
8 0.9667 5695.66 -0.06 -97.17 0.10
9 0.9752 5471.30 -0.06 -98.73 -0.08
10 0.9752 5469.24 0.06 -98.51 0.14
11 1.0460 3638.38 0.07 -83.58 0.06
12 1.0464 3627.99 -0.33 -83.15 0.24
13 1.1171 2205.25 0.04 -25.07 0.02
14 1.2101 1543.42 -0.06 92.01 -0.14
15 1.2290 1610.41 -0.01 117.87 0.01
16 1.8021 13619.46 0.04 -49.07 -0.02
17 1.8567 12976.60 -0.16 -119.30 -0.05
18 1.8921 12317.27 0.05 -155.18 -0.10
19 1.8923 12313.79 -0.00 -155.22 -0.02
20 1.8923 12312.73 -0.02 -155.18 0.06
21 1.9553 10810.48 0.03 -193.44 -0.02
22 1.9604 10676.30 -0.02 -195.03 -0.06
23 2.0972 7320.73 0.08 -143.79 -0.08
24 2.1084 7117.88 0.19 -132.49 0.04
25 2.1221 6896.20 0.07 -117.78 0.09
26 2.1876 6277.65 -0.01 -35.51 0.18
27 2.8263 18176.49 0.04 -180.32 -0.10
28 2.8289 18147.71 0.04 -183.68 0.00
29 2.8453 17942.02 -0.03 -204.25 0.13
30 3.0665 12761.64 -0.08 -268.79 -0.11
31 3.0747 12576.96 -0.04 -262.37 0.05
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.
15VF172 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.818 43.826 43.809 ecceobj 0.028 0.028 0.028 incobj 2.918 2.918 2.918 qmin 41.268 41.267 41.280 qmax 45.868 45.876 45.863 amean 43.486 43.495 43.478 amin 43.156 43.163 43.141 amax 43.827 43.835 43.826 emean 0.031 0.031 0.031 emin 0.013 0.014 0.013 emax 0.047 0.047 0.047 imean 3.151 3.148 3.154 imin 2.364 2.361 2.366 imax 3.864 3.860 3.864 excite_mean 0.063 0.063 0.063 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.090 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 182.2 182.4 182.1 kozaiamp 180.0 180.0 180.0