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: 15VL173 # Created Mon Apr 28 01:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 36 observations of 36 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000059 0.022954 -0.000002 -0.000326 0.023626 0.000000 # Chi-squared of fit: 12.05 DOF: 66 RMS: 0.10 # Min/Max residuals: -0.20 0.34 # Exact a, adot, b, bdot, g, gdot: 1.536818E-05 2.298689E-02 3.050627E-08 -3.262890E-04 2.370488E-02 -1.594178E-03 # Covariance matrix: 2.4778E-13 -2.8040E-13 -6.5043E-16 2.2709E-15 -1.1174E-13 -2.7828E-12 -2.8040E-13 4.6435E-13 1.1083E-15 -4.6946E-15 2.5529E-13 5.6132E-12 -6.5043E-16 1.1083E-15 1.4342E-13 -7.6136E-14 -7.1438E-17 1.3848E-14 2.2709E-15 -4.6946E-15 -7.6136E-14 5.6742E-14 -3.5960E-15 -6.5851E-14 -1.1174E-13 2.5529E-13 -7.1438E-17 -3.5960E-15 2.9016E-13 3.7555E-12 -2.7828E-12 5.6132E-12 1.3848E-14 -6.5851E-14 3.7555E-12 7.7731E-11 # lat0 lon0 xBary yBary zBary JD0 -2.237174 48.040862 -0.110539 -0.038238 -0.982538 2456978.772168 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 299.92718 +/- 0.079 Argument of Peri: 317.77034 +/- 0.117 Long of Asc Node: 158.45839 +/- 0.014 Inclination: 2.33041 +/- 0.000 Eccentricity: 0.07674091 +/- 0.0004 Semi-Major Axis: 44.67003091 +/- 0.0044 Time of Perihelion: 2475167.4381 +/- 23.8 Perihelion: 41.24201203 +/- 0.0169 Aphelion: 48.09804978 +/- 0.0171 Period (y) 298.5607 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.75577344 +/- 0.0006 Ecliptic Y 32.15269797 +/- 0.0007 Ecliptic Z -1.64676724 +/- 0.0000 Ecliptic XDOT -0.00210253 +/- 0.0000 Ecliptic YDOT 0.00163221 +/- 0.0000 Ecliptic ZDOT -0.00003037 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.16714417 +/- 0.0007 Geocenter to KBO 42.18541340 +/- 0.0010 # Hcoef: 8.45
The following table shows the complete astrometric record for 15VL173. 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 (15VL173) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27139 03 04 53.802 +15 03 19.97 24.2r 15VL173 568 C~2nwH 2014 11 17.38009 03 04 53.286 +15 03 17.97 24.5r 15VL173 568 C~2nwH 2014 11 17.49387 03 04 52.727 +15 03 15.64 24.7r 15VL173 568 C~2nwH 2014 11 19.28114 03 04 44.292 +15 02 41.09 24.8r 15VL173 568 C~2nwH 2014 11 23.38468 03 04 25.047 +15 01 23.15 24.9r 15VL173 568 C~2nwH 2015 08 11.61007 03 14 35.956 +15 44 59.77 25.2w 15VL173 568 C~2nwH 2015 10 07.45292 03 13 13.524 +15 36 42.61 24.8w 15VL173 568 C~2nwH 2015 10 08.45753 03 13 09.818 +15 36 25.88 24.9w 15VL173 568 C~2nwH 2015 11 07.36426 03 10 59.266 +15 27 05.50 24.9r 15VL173 568 C~2nwH 2015 11 07.40638 03 10 59.065 +15 27 04.72 24.8r 15VL173 568 C~2nwH 2015 11 07.44859 03 10 58.857 +15 27 03.93 24.7r 15VL173 568 C~2nwH 2015 11 10.53471 03 10 44.059 +15 26 03.38 25.1w 15VL173 568 C~2nwH 2015 11 17.38127 03 10 11.226 +15 23 50.87 24.7w 15VL173 568 C~2nwH 2015 11 17.42797 03 10 10.999 +15 23 49.97 24.9w 15VL173 568 C~2nwH 2015 12 06.39016 03 08 43.905 +15 18 11.42 25.5w 15VL173 568 C~2nwH 2015 12 13.32462 03 08 15.191 +15 16 24.88 25.0w 15VL173 568 C~2nwH 2015 12 13.38310 03 08 14.964 +15 16 23.95 24.9w 15VL173 568 C~2nwH 2016 01 01.37764 03 07 10.944 +15 12 42.33 25.0w 15VL173 568 C~2nwH 2016 01 07.32440 03 06 56.323 +15 11 57.83 25.0w 15VL173 568 C~2nwH 2016 02 04.30735 03 06 29.791 +15 11 33.27 25.7w 15VL173 568 C~2nwH 2016 02 04.31413 03 06 29.773 +15 11 33.08 25.1w 15VL173 568 C~2nwH 2016 02 04.32803 03 06 29.801 +15 11 33.02 25.7w 15VL173 568 C~2nwH 2016 02 05.26985 03 06 30.177 +15 11 37.59 25.3w 15VL173 568 C~2nwH 2016 02 10.29068 03 06 33.727 +15 12 08.14 24.1w 15VL173 568 C~2nwH 2016 09 06.59240 03 19 46.705 +16 02 36.63 25.1w 15VL173 568 C~2nwH 2016 09 26.58845 03 19 04.469 +15 58 55.68 24.9w 15VL173 568 C~2nwH 2016 10 10.39070 03 18 17.778 +15 55 23.56 25.1w 15VL173 568 C~2nwH 2016 11 02.54892 03 16 37.270 +15 48 21.43 25.0w 15VL173 568 C~2nwH 2016 12 24.30148 03 12 48.432 +15 34 02.06 25.1w 15VL173 568 C~2nwH 2017 01 02.40371 03 12 20.930 +15 32 34.26 24.9w 15VL173 568 C~2nwH 2017 01 26.29235 03 11 41.715 +15 31 06.92 25.0w 15VL173 568 C~2nwH 2017 09 15.57624 03 24 50.076 +16 20 15.99 24.8w 15VL173 568 C~2nwH 2017 09 16.60944 03 24 48.041 +16 20 05.33 24.9w 15VL173 568 C~2nwH 2017 09 21.62152 03 24 36.934 +16 19 09.39 25.1w 15VL173 568 C~2nwH 2017 09 23.54857 03 24 32.115 +16 18 45.82 15VL173 568 C~2nwH 2017 12 16.35462 03 18 36.388 +15 55 25.64 24.9w 15VL173 568 C~2nwH
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 -0.05
2 0.0003 -7.74 0.13 0.14 0.01
3 0.0006 -16.16 -0.05 0.13 -0.06
4 0.0055 -143.14 0.00 0.58 -0.08
5 0.0167 -432.62 -0.20 2.54 -0.10
6 0.7319 8786.16 -0.05 133.65 -0.03
7 0.8876 7504.45 -0.07 -29.91 -0.01
8 0.8903 7448.32 -0.09 -31.79 0.09
9 0.9722 5478.44 0.02 -67.13 -0.02
10 0.9723 5475.43 0.08 -67.10 0.01
11 0.9724 5472.32 0.05 -67.06 0.06
12 0.9809 5249.81 -0.14 -67.86 0.02
13 0.9996 4756.60 -0.02 -67.63 0.04
14 0.9997 4753.19 -0.02 -67.61 0.03
15 1.0517 3448.25 -0.08 -52.91 0.10
16 1.0706 3019.36 -0.07 -42.67 0.17
17 1.0708 3015.94 0.05 -42.67 0.05
18 1.1228 2063.94 -0.06 -3.61 -0.05
19 1.1391 1848.18 0.06 11.37 -0.12
20 1.2157 1472.01 0.34 92.76 0.25
21 1.2157 1471.71 0.00 92.65 0.11
22 1.2158 1472.08 0.30 92.48 -0.10
23 1.2183 1478.57 -0.03 95.38 -0.05
24 1.2321 1536.36 -0.06 110.71 0.04
25 1.8051 13402.99 -0.03 -19.30 0.02
26 1.8599 12754.99 0.30 -75.07 -0.05
27 1.8977 12047.05 0.04 -104.93 -0.10
28 1.9611 10532.41 -0.08 -133.43 -0.10
29 2.1028 7111.76 -0.04 -88.12 -0.02
30 2.1277 6704.86 -0.11 -66.65 -0.05
31 2.1931 6134.85 -0.09 0.84 0.00
32 2.8290 17924.77 0.06 -112.78 0.03
33 2.8319 17893.50 0.02 -115.70 0.04
34 2.8456 17723.41 0.11 -129.44 0.10
35 2.8509 17649.79 -0.07 -134.71 -0.08
36 3.0803 12307.69 -0.19 -172.88 -0.10
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.
15VL173 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.994 45.005 44.983 ecceobj 0.076 0.076 0.075 incobj 2.325 2.325 2.325 qmin 40.368 40.326 40.363 qmax 49.196 49.234 49.136 amean 44.646 44.657 44.635 amin 44.288 44.300 44.275 amax 45.027 45.039 45.011 emean 0.077 0.078 0.077 emin 0.062 0.062 0.062 emax 0.093 0.094 0.092 imean 2.286 2.286 2.287 imin 1.658 1.658 1.657 imax 2.929 2.927 2.929 excite_mean 0.087 0.088 0.087 fracstop 1.000 1.000 1.000 cjmean 3.100 3.100 3.100 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 184.7 184.9 185.2 kozaiamp 180.0 180.0 180.0