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: 15VQ170 # Created Tue Apr 1 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.20y # First observation: 2014/11/17 # Last observation: 2017/01/27 Preliminary a, adot, b, bdot, g, gdot: -0.000038 0.028769 0.000000 0.005358 0.027265 0.000000 # Chi-squared of fit: 5.98 DOF: 64 RMS: 0.07 # Min/Max residuals: -0.16 0.23 # Exact a, adot, b, bdot, g, gdot: 1.700402E-05 2.880802E-02 3.212792E-06 5.375894E-03 2.723227E-02 -2.585630E-03 # Covariance matrix: 2.7261E-13 -3.6247E-13 1.6234E-14 -4.7703E-14 -1.6802E-13 -3.8871E-12 -3.6247E-13 8.0969E-13 -4.6556E-14 1.3690E-13 4.2776E-13 1.1159E-11 1.6234E-14 -4.6556E-14 1.8341E-13 -1.1711E-13 -2.6943E-14 -7.1750E-13 -4.7703E-14 1.3690E-13 -1.1711E-13 1.1075E-13 7.9039E-14 2.1101E-12 -1.6802E-13 4.2776E-13 -2.6943E-14 7.9039E-14 3.5809E-13 6.4347E-12 -3.8871E-12 1.1159E-11 -7.1750E-13 2.1101E-12 6.4347E-12 1.7201E-10 # lat0 lon0 xBary yBary zBary JD0 -0.424936 48.854754 -0.096737 -0.007157 -0.984709 2456978.782278 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 327.90165 +/- 0.100 Argument of Peri: 40.09957 +/- 0.147 Long of Asc Node: 51.22239 +/- 0.000 Inclination: 10.57925 +/- 0.001 Eccentricity: 0.14419559 +/- 0.0003 Semi-Major Axis: 42.60888621 +/- 0.0055 Time of Perihelion: 2466028.4296 +/- 28.3 Perihelion: 36.46487260 +/- 0.0150 Aphelion: 48.75289983 +/- 0.0156 Period (y) 278.1368 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.73270570 +/- 0.0005 Ecliptic Y 28.45857369 +/- 0.0006 Ecliptic Z -0.27223738 +/- 0.0000 Ecliptic XDOT -0.00235369 +/- 0.0000 Ecliptic YDOT 0.00170796 +/- 0.0000 Ecliptic ZDOT 0.00054249 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.70505618 +/- 0.0006 Geocenter to KBO 36.72114649 +/- 0.0008 # Hcoef: 8.67
The following table shows the complete astrometric record for 15VQ170. 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 (15VQ170) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.28150 03 06 04.937 +17 01 17.50 24.7r 15VQ170 568 C~2nw6 2014 11 17.39021 03 06 04.338 +17 01 15.44 25.0r 15VQ170 568 C~2nw6 2014 11 17.50402 03 06 03.701 +17 01 13.26 24.6r 15VQ170 568 C~2nw6 2014 11 19.29385 03 05 53.928 +17 00 39.16 23.4r 15VQ170 568 C~2nw6 2014 11 23.39737 03 05 31.715 +16 59 21.83 24.0r 15VQ170 568 C~2nw6 2015 09 07.62902 03 17 22.822 +18 01 38.22 24.6w 15VQ170 568 C~2nw6 2015 09 12.49264 03 17 14.227 +18 01 19.07 24.7w 15VQ170 568 C~2nw6 2015 10 07.53854 03 15 55.155 +17 57 28.49 24.6w 15VQ170 568 C~2nw6 2015 10 07.59790 03 15 54.894 +17 57 27.75 24.8w 15VQ170 568 C~2nw6 2015 10 09.57780 03 15 46.478 +17 57 01.04 24.6w 15VQ170 568 C~2nw6 2015 11 07.33264 03 13 21.166 +17 49 04.52 24.2r 15VQ170 568 C~2nw6 2015 11 07.37479 03 13 20.934 +17 49 03.77 24.2r 15VQ170 568 C~2nw6 2015 11 07.41697 03 13 20.689 +17 49 03.00 24.4r 15VQ170 568 C~2nw6 2015 11 17.34635 03 12 25.540 +17 45 57.85 24.5w 15VQ170 568 C~2nw6 2015 11 17.39294 03 12 25.270 +17 45 57.02 24.6w 15VQ170 568 C~2nw6 2015 12 06.35508 03 10 44.121 +17 40 17.92 24.7w 15VQ170 568 C~2nw6 2015 12 06.49265 03 10 43.428 +17 40 15.84 24.8w 15VQ170 568 C~2nw6 2016 01 01.36607 03 08 55.702 +17 34 29.62 24.4w 15VQ170 568 C~2nw6 2016 02 04.28927 03 08 07.326 +17 33 04.34 24.9w 15VQ170 568 C~2nw6 2016 02 10.27908 03 08 11.828 +17 33 41.38 24.4w 15VQ170 568 C~2nw6 2016 09 07.57363 03 23 42.142 +18 44 21.00 15VQ170 568 C~2nw6 2016 09 27.51061 03 22 53.726 +18 42 28.85 24.7w 15VQ170 568 C~2nw6 2016 09 29.48481 03 22 46.931 +18 42 10.35 24.9w 15VQ170 568 C~2nw6 2016 10 05.48792 03 22 24.277 +18 41 06.50 24.7w 15VQ170 568 C~2nw6 2016 10 07.49247 03 22 16.097 +18 40 42.73 24.8w 15VQ170 568 C~2nw6 2016 10 07.58817 03 22 15.684 +18 40 41.52 24.6w 15VQ170 568 C~2nw6 2016 10 09.49252 03 22 07.634 +18 40 17.96 24.9w 15VQ170 568 C~2nw6 2016 10 09.56525 03 22 07.308 +18 40 17.07 24.7w 15VQ170 568 C~2nw6 2016 11 04.40663 03 19 57.852 +18 33 37.97 24.5w 15VQ170 568 C~2nw6 2016 12 24.30698 03 15 41.093 +18 19 53.28 24.5w 15VQ170 568 C~2nw6 2016 12 24.32550 03 15 41.003 +18 19 52.89 24.3w 15VQ170 568 C~2nw6 2017 01 02.40920 03 15 08.734 +18 18 14.35 24.8w 15VQ170 568 C~2nw6 2017 01 02.42780 03 15 08.665 +18 18 14.16 24.6w 15VQ170 568 C~2nw6 2017 01 26.29981 03 14 22.108 +18 16 19.64 24.6w 15VQ170 568 C~2nw6 2017 01 27.27995 03 14 21.507 +18 16 19.88 24.8w 15VQ170 568 C~2nw6
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 -0.06 0.00 -0.02
2 0.0003 -8.83 0.03 0.37 -0.04
3 0.0006 -18.21 -0.01 0.77 -0.02
4 0.0055 -162.37 -0.11 6.36 0.03
5 0.0167 -490.00 0.07 19.36 -0.05
6 0.8059 10319.16 -0.04 904.98 0.03
7 0.8192 10195.49 -0.10 918.31 -0.04
8 0.8878 9043.77 -0.07 989.44 0.01
9 0.8879 9039.97 -0.15 989.69 0.09
10 0.8934 8916.84 -0.06 995.29 -0.07
11 0.9721 6787.07 0.16 1081.01 0.05
12 0.9722 6783.67 0.23 1081.17 0.05
13 0.9723 6780.09 0.12 1081.35 0.08
14 0.9995 5970.74 0.03 1111.64 -0.02
15 0.9996 5966.79 -0.06 1111.86 0.04
16 1.0515 4482.47 0.02 1170.60 -0.04
17 1.0519 4472.37 0.18 1171.25 0.16
18 1.1228 2895.42 -0.05 1252.06 -0.01
19 1.2156 2206.23 -0.07 1357.19 -0.04
20 1.2320 2278.25 -0.00 1375.40 -0.11
21 1.8078 16218.89 0.00 2008.73 0.04
22 1.8624 15520.87 -0.03 2073.07 -0.03
23 1.8678 15422.22 0.01 2079.49 0.02
24 1.8842 15092.85 -0.01 2098.88 0.04
25 1.8897 14973.74 0.09 2105.23 -0.06
26 1.8900 14967.73 0.01 2105.54 -0.09
27 1.8952 14850.48 0.05 2111.65 -0.06
28 1.8954 14845.75 -0.03 2111.96 -0.01
29 1.9661 12955.90 0.03 2193.76 0.01
30 2.1027 9202.34 0.10 2341.31 0.04
31 2.1028 9200.99 -0.16 2341.27 -0.06
32 2.1277 8730.80 0.00 2366.38 -0.00
33 2.1277 8729.80 -0.12 2366.45 0.02
34 2.1931 8058.78 -0.06 2430.02 0.05
35 2.1958 8050.58 0.04 2432.50 -0.01
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.
15VQ170 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.918 42.930 42.907 ecceobj 0.146 0.147 0.146 incobj 10.550 10.550 10.550 qmin 35.682 35.510 35.952 qmax 49.743 49.970 49.513 amean 42.524 42.537 42.508 amin 42.125 42.138 42.125 amax 42.931 42.956 42.927 emean 0.123 0.126 0.114 emin 0.093 0.097 0.079 emax 0.159 0.164 0.154 imean 8.007 7.954 7.979 imin 6.116 6.354 5.724 imax 9.829 9.823 9.831 excite_mean 0.186 0.188 0.181 fracstop 1.000 1.000 1.000 cjmean 3.043 3.042 3.045 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 178.1 178.1 177.8 kozaiamp 179.9 180.0 180.0