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: 15VS173 # Created Sun Dec 22 02:10:38 2024 # Orbit generated from Bernstein formalism # Fitting 27 observations of 27 # Arc: 2.12y # First observation: 2015/08/11 # Last observation: 2017/09/22 Preliminary a, adot, b, bdot, g, gdot: -0.000137 0.019840 -0.000020 -0.003922 0.021991 0.000000 # Chi-squared of fit: 17.63 DOF: 48 RMS: 0.14 # Min/Max residuals: -0.33 0.32 # Exact a, adot, b, bdot, g, gdot: 1.508634E-05 1.958656E-02 -2.819797E-06 -3.895875E-03 2.181667E-02 3.132821E-03 # Covariance matrix: 2.7375E-13 1.6270E-14 1.7014E-14 -3.3929E-14 2.1615E-13 3.9036E-12 1.6270E-14 3.9822E-13 2.9599E-14 -8.9699E-14 2.4028E-13 1.0338E-11 1.7014E-14 2.9599E-14 1.0842E-13 -9.7140E-14 3.2726E-14 1.1971E-12 -3.3929E-14 -8.9699E-14 -9.7140E-14 1.7697E-13 -8.2753E-14 -3.6703E-12 2.1615E-13 2.4028E-13 3.2726E-14 -8.2753E-14 3.3835E-13 9.5313E-12 3.9036E-12 1.0338E-11 1.1971E-12 -3.6703E-12 9.5313E-12 4.2304E-10 # lat0 lon0 xBary yBary zBary JD0 -3.500538 50.329947 1.015394 0.002064 0.031719 2457246.085349 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 85.18981 +/- 0.135 Argument of Peri: 97.08240 +/- 0.095 Long of Asc Node: 212.07536 +/- 0.002 Inclination: 11.83269 +/- 0.001 Eccentricity: 0.13143814 +/- 0.0010 Semi-Major Axis: 45.52833809 +/- 0.0129 Time of Perihelion: 2430687.9469 +/- 40.7 Perihelion: 39.54417783 +/- 0.0460 Aphelion: 51.51249834 +/- 0.0469 Period (y) 307.2069 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.96308710 +/- 0.0008 Ecliptic Y 34.54337254 +/- 0.0009 Ecliptic Z -2.79877882 +/- 0.0001 Ecliptic XDOT -0.00166260 +/- 0.0000 Ecliptic YDOT 0.00184182 +/- 0.0000 Ecliptic ZDOT -0.00051194 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.81336419 +/- 0.0009 Geocenter to KBO 45.83650550 +/- 0.0012 # Hcoef: 8.50
The following table shows the complete astrometric record for 15VS173. 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 (15VS173) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.58456 03 15 24.606 +14 27 12.03 25.1w 15VS173 568 C~2nwI 2015 09 06.63168 03 15 21.069 +14 23 54.18 15VS173 568 C~2nwI 2015 09 12.52133 03 15 12.409 +14 22 40.44 25.8w 15VS173 568 C~2nwI 2015 10 07.45992 03 14 07.148 +14 15 51.05 25.3w 15VS173 568 C~2nwI 2015 10 08.46335 03 14 03.663 +14 15 32.05 25.4w 15VS173 568 C~2nwI 2015 10 08.52236 03 14 03.486 +14 15 30.79 25.1w 15VS173 568 C~2nwI 2015 11 07.36952 03 12 01.353 +14 05 21.66 24.6r 15VS173 568 C~2nwI 2015 11 07.41164 03 12 01.136 +14 05 20.72 25.1r 15VS173 568 C~2nwI 2015 11 07.45387 03 12 00.940 +14 05 19.93 24.9r 15VS173 568 C~2nwI 2015 11 10.54061 03 11 47.073 +14 04 16.29 25.0w 15VS173 568 C~2nwI 2015 11 17.38710 03 11 16.276 +14 01 57.38 24.9w 15VS173 568 C~2nwI 2015 11 17.43381 03 11 16.060 +14 01 56.54 25.2w 15VS173 568 C~2nwI 2015 12 06.39596 03 09 54.290 +13 56 07.00 25.4w 15VS173 568 C~2nwI 2015 12 13.33048 03 09 27.263 +13 54 18.30 25.1w 15VS173 568 C~2nwI 2015 12 13.38903 03 09 27.068 +13 54 17.30 25.2w 15VS173 568 C~2nwI 2016 01 01.38342 03 08 26.620 +13 50 32.32 25.7w 15VS173 568 C~2nwI 2016 01 02.34977 03 08 24.155 +13 50 24.00 25.8w 15VS173 568 C~2nwI 2016 01 07.33018 03 08 12.690 +13 49 46.46 25.7w 15VS173 568 C~2nwI 2016 02 05.27611 03 07 47.018 +13 49 15.70 25.5w 15VS173 568 C~2nwI 2016 02 10.29646 03 07 50.097 +13 49 42.47 25.6w 15VS173 568 C~2nwI 2016 11 02.54312 03 17 07.410 +14 11 40.30 15VS173 568 C~2nwI 2016 11 04.41826 03 16 59.121 +14 11 02.01 15VS173 568 C~2nwI 2016 12 29.38526 03 13 18.389 +13 56 02.87 25.2w 15VS173 568 C~2nwI 2017 01 02.39267 03 13 07.731 +13 55 28.18 25.4w 15VS173 568 C~2nwI 2017 01 26.31474 03 12 30.384 +13 54 01.38 25.3w 15VS173 568 C~2nwI 2017 09 15.59463 03 24 34.403 +14 30 39.58 24.9w 15VS173 568 C~2nwI 2017 09 22.58081 03 24 19.867 +14 28 57.14 26.0w 15VS173 568 C~2nwI
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 -0.18 0.00 -0.00
2 0.0713 -101.47 -0.33 -177.45 -0.15
3 0.0874 -242.24 0.08 -215.59 0.09
4 0.1557 -1265.03 0.12 -361.11 0.05
5 0.1585 -1318.91 -0.13 -366.09 0.19
6 0.1586 -1321.73 0.30 -366.62 -0.07
7 0.2403 -3196.07 0.32 -483.91 -0.16
8 0.2405 -3199.36 -0.05 -483.97 -0.12
9 0.2406 -3202.32 -0.08 -483.98 -0.03
10 0.2490 -3413.79 -0.07 -491.69 0.12
11 0.2678 -3882.88 -0.06 -506.29 0.03
12 0.2679 -3886.14 -0.08 -506.26 0.13
13 0.3198 -5127.06 0.06 -525.09 -0.02
14 0.3388 -5535.57 -0.05 -524.31 0.09
15 0.3390 -5538.58 0.31 -524.51 -0.15
16 0.3910 -6447.69 0.29 -504.55 0.03
17 0.3936 -6484.54 -0.11 -502.89 0.08
18 0.4072 -6655.64 -0.23 -494.03 -0.19
19 0.4865 -7024.40 0.00 -422.73 0.14
20 0.5002 -6973.93 -0.19 -409.05 0.05
21 1.2292 1198.74 0.21 -1289.84 -0.04
22 1.2343 1072.38 0.15 -1295.41 0.04
23 1.3848 -2262.98 -0.19 -1319.96 -0.08
24 1.3958 -2421.82 0.02 -1312.38 0.01
25 1.4613 -2969.26 -0.04 -1252.04 -0.15
26 2.0972 7773.13 -0.13 -1855.69 0.01
27 2.1163 7542.68 0.05 -1901.46 0.12
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.
15VS173 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.999 46.040 45.960 ecceobj 0.135 0.138 0.133 incobj 11.772 11.772 11.773 qmin 39.057 38.874 39.046 qmax 52.645 52.837 52.493 amean 45.651 45.691 45.611 amin 45.266 45.318 45.233 amax 46.065 46.107 46.025 emean 0.131 0.133 0.128 emin 0.118 0.120 0.115 emax 0.144 0.146 0.141 imean 12.748 12.754 12.747 imin 12.260 12.260 12.260 imax 13.174 13.176 13.167 excite_mean 0.257 0.258 0.255 fracstop 1.000 1.000 1.000 cjmean 3.040 3.040 3.041 libcent 0 -180.0 -180.0 157.6 libamp 0 -180.0 -180.0 44.4 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 178.1 177.9 177.9 kozaiamp 180.0 180.0 180.0