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: 15VQ168 # Created Wed Dec 25 02:10:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 8.11y # First observation: 2014/11/17 # Last observation: 2022/12/26 # Chi-squared of fit: 8.73 DOF: 74 RMS: 0.08 # Min/Max residuals: -0.24 0.36 # Exact a, adot, b, bdot, g, gdot: 1.305646E-05 2.093576E-02 7.423654E-07 -5.654408E-05 2.272435E-02 -6.381903E-04 # Covariance matrix: 1.9722E-13 -1.5994E-13 -3.2490E-16 3.8250E-16 -5.2966E-14 -8.4456E-13 -1.5994E-13 1.6478E-13 3.5858E-16 -4.1688E-16 5.2775E-14 9.2138E-13 -3.2490E-16 3.5858E-16 6.8911E-14 -2.0671E-14 6.3964E-18 2.2655E-15 3.8250E-16 -4.1688E-16 -2.0671E-14 1.3394E-14 -1.2106E-16 -2.5543E-15 -5.2966E-14 5.2775E-14 6.3964E-18 -1.2106E-16 1.2342E-13 2.4765E-13 -8.4456E-13 9.2138E-13 2.2655E-15 -2.5543E-15 2.4765E-13 5.6593E-12 # lat0 lon0 xBary yBary zBary JD0 -0.202359 47.483651 -0.120536 -0.003320 -0.982099 2456978.797448 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 225.30896 +/- 0.096 Argument of Peri: 10.56468 +/- 0.111 Long of Asc Node: 175.21237 +/- 0.059 Inclination: 0.24971 +/- 0.000 Eccentricity: 0.04395613 +/- 0.0001 Semi-Major Axis: 43.59850743 +/- 0.0024 Time of Perihelion: 2496319.1993 +/- 28.5 Perihelion: 41.68208578 +/- 0.0047 Aphelion: 45.51492908 +/- 0.0048 Period (y) 287.8827 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.31064106 +/- 0.0005 Ecliptic Y 33.24250858 +/- 0.0005 Ecliptic Z -0.15540312 +/- 0.0000 Ecliptic XDOT -0.00191544 +/- 0.0000 Ecliptic YDOT 0.00164295 +/- 0.0000 Ecliptic ZDOT -0.00000644 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.98694513 +/- 0.0005 Geocenter to KBO 44.00571075 +/- 0.0007 # Hcoef: 7.79
The following table shows the complete astrometric record for 15VQ168. 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 (15VQ168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29667 03 00 18.960 +16 51 18.55 24.0r 15VQ168 568 C~2nvy 2014 11 17.40560 03 00 18.419 +16 51 16.46 24.5r 15VQ168 568 C~2nvy 2014 11 17.51968 03 00 17.902 +16 51 14.22 24.5r 15VQ168 568 C~2nvy 2014 11 19.31306 03 00 09.654 +16 50 39.65 24.3r 15VQ168 568 C~2nvy 2014 11 23.41643 02 59 51.002 +16 49 21.29 24.2r 15VQ168 568 C~2nvy 2015 08 11.60566 03 09 35.901 +17 29 30.74 24.5w 15VQ168 568 C~2nvy 2015 09 06.63576 03 09 28.329 +17 28 52.57 24.7w 15VQ168 568 C~2nvy 2015 09 12.52541 03 09 18.545 +17 28 11.58 24.3w 15VQ168 568 C~2nvy 2015 10 07.46582 03 08 08.047 +17 23 22.14 24.8w 15VQ168 568 C~2nvy 2015 10 08.47003 03 08 04.356 +17 23 07.11 24.6w 15VQ168 568 C~2nvy 2015 10 08.52822 03 08 04.127 +17 23 06.36 24.5w 15VQ168 568 C~2nvy 2015 11 06.28626 03 06 00.916 +17 14 42.80 24.0r 15VQ168 568 C~2nvy 2015 11 06.34963 03 06 00.625 +17 14 41.66 24.1r 15VQ168 568 C~2nvy 2015 11 06.42017 03 06 00.286 +17 14 40.26 24.3r 15VQ168 568 C~2nvy 2015 11 06.48956 03 05 59.965 +17 14 38.99 24.0r 15VQ168 568 C~2nvy 2015 11 07.50772 03 05 55.212 +17 14 19.51 24.1w 15VQ168 568 C~2nvy 2015 11 17.27378 03 05 09.623 +17 11 12.88 24.0w 15VQ168 568 C~2nvy 2015 11 17.32308 03 05 09.388 +17 11 11.87 24.2w 15VQ168 568 C~2nvy 2015 12 06.40182 03 03 44.582 +17 05 24.22 24.7w 15VQ168 568 C~2nvy 2015 12 13.33636 03 03 16.972 +17 03 30.96 24.8w 15VQ168 568 C~2nvy 2015 12 13.39494 03 03 16.734 +17 03 30.02 24.7w 15VQ168 568 C~2nvy 2016 01 01.38920 03 02 15.638 +16 59 19.69 24.6w 15VQ168 568 C~2nvy 2016 01 02.35555 03 02 13.198 +16 59 09.83 24.3w 15VQ168 568 C~2nvy 2016 01 07.33598 03 02 01.826 +16 58 23.52 24.1w 15VQ168 568 C~2nvy 2016 02 04.26610 03 01 37.999 +16 56 51.18 24.5w 15VQ168 568 C~2nvy 2016 02 10.25584 03 01 42.223 +16 57 10.21 24.6w 15VQ168 568 C~2nvy 2016 09 07.55628 03 14 13.755 +17 47 28.34 15VQ168 568 C~2nvy 2016 09 26.61685 03 13 31.237 +17 44 37.00 24.6w 15VQ168 568 C~2nvy 2016 10 10.43169 03 12 44.364 +17 41 30.23 24.8w 15VQ168 568 C~2nvy 2016 10 10.49031 03 12 44.143 +17 41 29.37 24.7w 15VQ168 568 C~2nvy 2016 10 27.52577 03 11 32.927 +17 36 46.05 24.7w 15VQ168 568 C~2nvy 2016 11 03.55078 03 11 00.842 +17 34 38.12 24.6w 15VQ168 568 C~2nvy 2016 12 28.38756 03 07 11.956 +17 19 24.04 24.6w 15VQ168 568 C~2nvy 2016 12 29.35312 03 07 09.187 +17 19 12.97 24.2w 15VQ168 568 C~2nvy 2017 01 01.25010 03 07 01.323 +17 18 41.70 24.8w 15VQ168 568 C~2nvy 2017 01 02.36014 03 06 58.457 +17 18 30.31 24.8w 15VQ168 568 C~2nvy 2017 01 26.25322 03 06 22.184 +17 16 08.60 24.4w 15VQ168 568 C~2nvy 2017 01 26.27742 03 06 22.175 +17 16 08.56 24.4w 15VQ168 568 C~2nvy 2022 12 26.110290 03 36 39.612 +19 08 03.66 24.7G 15VQ168 G37 C~69cT 2022 12 26.225210 03 36 39.197 +19 08 02.21 15VQ168 G37 C~69cT
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 0.36 0.00 -0.07
2 0.0003 0.00 -0.10 0.00 -0.06
3 0.0006 0.00 0.16 0.00 -0.08
4 0.0055 0.00 -0.14 0.00 -0.04
5 0.0168 0.00 0.00 0.00 -0.05
6 0.7319 0.00 -0.01 0.00 0.04
7 0.8031 0.00 -0.24 0.00 0.02
8 0.8192 0.00 0.01 0.00 -0.01
9 0.8875 0.00 0.02 0.00 -0.06
10 0.8903 0.00 -0.04 0.00 -0.03
11 0.8904 0.00 -0.17 0.00 0.09
12 0.9692 0.00 -0.01 0.00 0.02
13 0.9693 0.00 0.10 0.00 0.07
14 0.9695 0.00 0.02 0.00 0.01
15 0.9697 0.00 0.14 0.00 0.06
16 0.9725 0.00 0.01 0.00 -0.02
17 0.9993 0.00 0.05 0.00 0.04
18 0.9994 0.00 0.01 0.00 -0.04
19 1.0516 0.00 0.05 0.00 0.00
20 1.0706 0.00 0.07 0.00 0.04
21 1.0708 0.00 -0.09 0.00 0.02
22 1.1228 0.00 -0.00 0.00 -0.07
23 1.1254 0.00 -0.12 0.00 -0.01
24 1.1391 0.00 -0.04 0.00 -0.04
25 1.2155 0.00 -0.14 0.00 0.03
26 1.2319 0.00 -0.04 0.00 -0.07
27 1.8077 0.00 0.07 0.00 0.05
28 1.8599 0.00 0.11 0.00 -0.07
29 1.8977 0.00 -0.04 0.00 0.01
30 1.8979 0.00 0.06 0.00 0.03
31 1.9445 0.00 -0.13 0.00 0.08
32 1.9637 0.00 0.07 0.00 -0.03
33 2.1139 0.00 0.06 0.00 0.06
34 2.1165 0.00 -0.02 0.00 0.00
35 2.1244 0.00 0.10 0.00 0.10
36 2.1275 0.00 -0.02 0.00 0.05
37 2.1929 0.00 -0.01 0.00 0.03
38 2.1930 0.00 0.04 0.00 0.04
39 8.1063 0.00 -0.09 0.00 -0.02
40 8.1066 0.00 0.08 0.00 -0.07
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.
15VQ168 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.910 43.910 43.910 ecceobj 0.036 0.036 0.036 incobj 0.249 0.249 0.249 qmin 40.888 40.867 40.912 qmax 46.512 46.510 46.511 amean 43.607 43.606 43.606 amin 43.272 43.271 43.274 amax 43.952 43.951 43.950 emean 0.041 0.041 0.041 emin 0.023 0.023 0.023 emax 0.059 0.059 0.059 imean 1.887 1.887 1.887 imin 1.086 1.086 1.086 imax 2.545 2.545 2.545 excite_mean 0.054 0.054 0.054 fracstop 1.000 1.000 1.000 cjmean 3.093 3.093 3.093 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 154.4 154.5 154.6 kozaiamp 179.9 179.9 180.0