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: 15VQ173 # Created Mon Apr 28 01:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.19y # First observation: 2014/11/17 # Last observation: 2017/01/26 Preliminary a, adot, b, bdot, g, gdot: -0.000019 0.026405 -0.000001 0.000045 0.025373 0.000000 # Chi-squared of fit: 3.98 DOF: 64 RMS: 0.06 # Min/Max residuals: -0.27 0.15 # Exact a, adot, b, bdot, g, gdot: 1.571865E-05 2.655539E-02 3.743244E-07 4.767926E-05 2.551176E-02 -2.957360E-04 # Covariance matrix: 2.7417E-13 -3.7628E-13 1.3180E-15 -1.4195E-15 -1.6366E-13 -4.4714E-12 -3.7628E-13 7.9130E-13 -3.3220E-15 4.1020E-15 3.9170E-13 1.1894E-11 1.3180E-15 -3.3220E-15 1.7258E-13 -1.1422E-13 -2.2784E-15 -5.6148E-14 -1.4195E-15 4.1020E-15 -1.1422E-13 1.0029E-13 1.3994E-15 7.3015E-14 -1.6366E-13 3.9170E-13 -2.2784E-15 1.3994E-15 3.2476E-13 6.4741E-12 -4.4714E-12 1.1894E-11 -5.6148E-14 7.3015E-14 6.4741E-12 2.0542E-10 # lat0 lon0 xBary yBary zBary JD0 -2.853376 47.779728 -0.115019 -0.048777 -0.981557 2456978.772168 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 354.77717 +/- 0.265 Argument of Peri: 278.63509 +/- 0.329 Long of Asc Node: 135.73605 +/- 0.014 Inclination: 2.78574 +/- 0.000 Eccentricity: 0.10333787 +/- 0.0001 Semi-Major Axis: 44.78246365 +/- 0.0031 Time of Perihelion: 2458558.5474 +/- 80.7 Perihelion: 40.15473921 +/- 0.0044 Aphelion: 49.41018809 +/- 0.0048 Period (y) 299.6886 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.87956348 +/- 0.0006 Ecliptic Y 29.79905114 +/- 0.0007 Ecliptic Z -1.95126380 +/- 0.0000 Ecliptic XDOT -0.00213591 +/- 0.0000 Ecliptic YDOT 0.00188680 +/- 0.0000 Ecliptic ZDOT 0.00000679 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.17837493 +/- 0.0006 Geocenter to KBO 39.19760211 +/- 0.0009 # Hcoef: 7.46
The following table shows the complete astrometric record for 15VQ173. 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 (15VQ173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27139 03 04 33.729 +14 23 28.70 23.4r 15VQ173 568 C~2nwI 2014 11 17.38009 03 04 33.162 +14 23 26.52 23.3r 15VQ173 568 C~2nwI 2014 11 17.49387 03 04 32.576 +14 23 24.15 23.4r 15VQ173 568 C~2nwI 2014 11 19.28114 03 04 23.647 +14 22 48.14 23.5r 15VQ173 568 C~2nwI 2014 11 23.38468 03 04 03.274 +14 21 27.20 23.5r 15VQ173 568 C~2nwI 2015 08 11.58456 03 15 13.935 +15 11 19.80 23.7w 15VQ173 568 C~2nwI 2015 09 06.63168 03 15 12.057 +15 09 21.89 23.6w 15VQ173 568 C~2nwI 2015 09 12.52133 03 15 02.629 +15 08 21.28 23.7w 15VQ173 568 C~2nwI 2015 10 07.45992 03 13 49.863 +15 02 11.14 23.8w 15VQ173 568 C~2nwI 2015 10 08.46335 03 13 45.967 +15 01 53.10 23.7w 15VQ173 568 C~2nwI 2015 10 08.52236 03 13 45.732 +15 01 52.04 23.9w 15VQ173 568 C~2nwI 2015 11 07.36952 03 11 28.000 +14 51 57.91 23.4r 15VQ173 568 C~2nwI 2015 11 07.41164 03 11 27.787 +14 51 57.00 23.5r 15VQ173 568 C~2nwI 2015 11 07.45387 03 11 27.565 +14 51 56.12 23.4r 15VQ173 568 C~2nwI 2015 11 10.54061 03 11 11.904 +14 50 52.60 23.6w 15VQ173 568 C~2nwI 2015 11 17.38710 03 10 37.127 +14 48 34.01 23.6w 15VQ173 568 C~2nwI 2015 11 17.43381 03 10 36.888 +14 48 33.13 23.5w 15VQ173 568 C~2nwI 2015 12 06.39596 03 09 04.682 +14 42 43.94 23.7w 15VQ173 568 C~2nwI 2015 12 13.33048 03 08 34.320 +14 40 56.17 23.7w 15VQ173 568 C~2nwI 2015 12 13.38903 03 08 34.068 +14 40 55.30 23.6w 15VQ173 568 C~2nwI 2016 01 01.38342 03 07 26.584 +14 37 18.96 23.8w 15VQ173 568 C~2nwI 2016 01 02.34977 03 07 23.887 +14 37 11.63 23.8w 15VQ173 568 C~2nwI 2016 01 07.33018 03 07 11.262 +14 36 38.98 23.7w 15VQ173 568 C~2nwI 2016 02 05.27611 03 06 44.923 +14 36 56.59 23.8w 15VQ173 568 C~2nwI 2016 02 10.29646 03 06 49.009 +14 37 36.27 23.5w 15VQ173 568 C~2nwI 2016 09 06.59818 03 21 10.787 +15 32 52.74 23.8w 15VQ173 568 C~2nwI 2016 09 26.59251 03 20 27.334 +15 28 53.37 23.9w 15VQ173 568 C~2nwI 2016 10 10.39652 03 19 38.493 +15 25 06.64 23.8w 15VQ173 568 C~2nwI 2016 10 10.45485 03 19 38.257 +15 25 05.64 23.7w 15VQ173 568 C~2nwI 2016 11 02.54892 03 17 52.576 +15 17 40.48 23.6w 15VQ173 568 C~2nwI 2016 11 04.42405 03 17 43.196 +15 17 02.82 23.7w 15VQ173 568 C~2nwI 2016 12 24.31885 03 13 50.247 +15 02 59.60 23.8w 15VQ173 568 C~2nwI 2017 01 02.42106 03 13 21.209 +15 01 35.90 23.8w 15VQ173 568 C~2nwI 2017 01 26.30729 03 12 40.215 +15 00 31.92 23.8w 15VQ173 568 C~2nwI 2017 01 26.33541 03 12 40.190 +15 00 32.02 23.8w 15VQ173 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 0.15 0.00 -0.07
2 0.0003 -8.52 -0.02 0.18 -0.01
3 0.0006 -17.36 -0.09 0.25 -0.05
4 0.0055 -151.99 0.03 1.45 -0.05
5 0.0167 -458.87 -0.10 5.46 0.03
6 0.7319 9722.41 0.04 254.78 -0.06
7 0.8032 9664.87 -0.27 148.14 0.10
8 0.8193 9516.87 0.05 125.79 -0.02
9 0.8876 8400.46 0.04 48.54 -0.02
10 0.8903 8341.16 0.01 46.17 -0.00
11 0.8905 8337.59 0.03 46.05 -0.00
12 0.9722 6252.72 0.04 7.26 0.10
13 0.9723 6249.50 0.07 7.21 0.05
14 0.9724 6246.16 0.01 7.23 0.05
15 0.9809 6010.17 -0.02 7.08 0.03
16 0.9996 5486.79 0.01 9.38 -0.01
17 0.9998 5483.21 0.05 9.47 0.03
18 1.0517 4100.42 0.02 34.90 -0.04
19 1.0707 3647.01 0.04 50.77 -0.03
20 1.0708 3643.26 0.02 50.92 -0.04
21 1.1228 2641.78 -0.10 109.47 -0.09
22 1.1255 2602.12 -0.07 113.11 0.06
23 1.1391 2416.89 0.02 131.74 0.09
24 1.2184 2053.93 -0.01 253.22 0.02
25 1.2321 2121.84 0.05 275.16 0.04
26 1.8051 15061.79 0.01 154.53 -0.00
27 1.8599 14389.82 -0.03 85.33 -0.01
28 1.8977 13645.62 0.01 49.28 0.00
29 1.8978 13642.05 0.05 49.20 0.02
30 1.9611 12044.06 -0.04 17.77 0.01
31 1.9662 11902.74 0.01 16.94 -0.00
32 2.1028 8418.74 0.05 93.81 0.02
33 2.1277 7990.32 -0.00 125.18 -0.05
34 2.1931 7400.06 0.01 222.13 -0.09
35 2.1932 7399.74 -0.09 222.32 -0.02
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.
15VQ173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.154 45.163 45.145 ecceobj 0.110 0.110 0.110 incobj 2.785 2.785 2.785 qmin 39.050 39.058 39.070 qmax 50.780 50.835 50.754 amean 44.768 44.780 44.759 amin 44.412 44.414 44.391 amax 45.173 45.201 45.163 emean 0.109 0.109 0.109 emin 0.094 0.094 0.095 emax 0.125 0.125 0.124 imean 2.193 2.186 2.195 imin 1.473 1.474 1.473 imax 2.884 2.875 2.888 excite_mean 0.116 0.116 0.116 fracstop 1.000 1.000 1.000 cjmean 3.095 3.095 3.094 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 183.4 184.2 183.5 kozaiamp 180.0 179.9 180.0