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: 15VS168 # Created Sun Nov 24 02:10:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 37 observations of 37 # Arc: 7.94y # First observation: 2014/11/19 # Last observation: 2022/10/29 # Chi-squared of fit: 11.34 DOF: 68 RMS: 0.10 # Min/Max residuals: -0.27 0.29 # Exact a, adot, b, bdot, g, gdot: 1.285210E-05 1.514528E-02 7.365466E-07 9.005564E-04 1.910797E-02 -1.799096E-03 # Covariance matrix: 3.3025E-13 -2.6019E-13 1.4295E-14 -1.3720E-14 -8.7122E-14 -1.7277E-12 -2.6019E-13 2.3853E-13 -1.3540E-14 1.3003E-14 8.0620E-14 1.6374E-12 1.4295E-14 -1.3540E-14 7.7412E-14 -2.0543E-14 -5.4142E-15 -9.7392E-14 -1.3720E-14 1.3003E-14 -2.0543E-14 1.1353E-14 4.8104E-15 9.3456E-14 -8.7122E-14 8.0620E-14 -5.4142E-15 4.8104E-15 1.3755E-13 5.9939E-13 -1.7277E-12 1.6374E-12 -9.7392E-14 9.3456E-14 5.9939E-13 1.1768E-11 # lat0 lon0 xBary yBary zBary JD0 -0.803734 47.781389 -0.150137 -0.013559 -0.977416 2456980.813838 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 227.29721 +/- 0.049 Argument of Peri: 132.64587 +/- 0.046 Long of Asc Node: 60.97233 +/- 0.001 Inclination: 3.49639 +/- 0.000 Eccentricity: 0.17936518 +/- 0.0001 Semi-Major Axis: 46.92157414 +/- 0.0029 Time of Perihelion: 2500255.2767 +/- 17.5 Perihelion: 38.50547732 +/- 0.0068 Aphelion: 55.33767096 +/- 0.0073 Period (y) 321.4157 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.70556794 +/- 0.0007 Ecliptic Y 39.58050321 +/- 0.0008 Ecliptic Z -0.73409015 +/- 0.0000 Ecliptic XDOT -0.00178336 +/- 0.0000 Ecliptic YDOT 0.00126367 +/- 0.0000 Ecliptic ZDOT 0.00013274 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 53.31089007 +/- 0.0007 Geocenter to KBO 52.33428964 +/- 0.0010 # Hcoef: 7.04
The following table shows the complete astrometric record for 15VS168. 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 (15VS168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 19.31306 03 02 12.679 +16 21 39.84 24.1r 15VS168 568 C~2nvy 2014 11 23.41643 03 01 56.565 +16 20 35.52 24.4r 15VS168 568 C~2nvy 2015 08 11.60566 03 09 40.628 +16 55 27.00 24.5w 15VS168 568 C~2nvy 2015 09 06.63576 03 09 31.679 +16 54 42.12 24.1w 15VS168 568 C~2nvy 2015 09 12.52541 03 09 22.856 +16 54 05.04 24.8w 15VS168 568 C~2nvy 2015 10 08.47003 03 08 17.948 +16 49 40.09 24.1w 15VS168 568 C~2nvy 2015 10 08.52822 03 08 17.755 +16 49 39.31 24.5w 15VS168 568 C~2nvy 2015 11 06.28626 03 06 31.409 +16 42 34.10 24.3r 15VS168 568 C~2nvy 2015 11 06.34963 03 06 31.143 +16 42 33.18 24.1r 15VS168 568 C~2nvy 2015 11 06.42017 03 06 30.876 +16 42 32.06 24.0r 15VS168 568 C~2nvy 2015 11 06.48956 03 06 30.587 +16 42 30.86 24.2r 15VS168 568 C~2nvy 2015 11 07.50772 03 06 26.496 +16 42 14.68 24.4w 15VS168 568 C~2nvy 2015 11 17.27378 03 05 47.213 +16 39 39.43 24.5w 15VS168 568 C~2nvy 2015 11 17.32308 03 05 47.008 +16 39 38.62 24.4w 15VS168 568 C~2nvy 2015 12 13.33636 03 04 09.766 +16 33 20.62 24.4w 15VS168 568 C~2nvy 2015 12 13.39494 03 04 09.567 +16 33 19.88 24.4w 15VS168 568 C~2nvy 2016 01 01.38920 03 03 15.990 +16 29 59.96 24.6w 15VS168 568 C~2nvy 2016 01 02.35555 03 03 13.834 +16 29 52.12 24.5w 15VS168 568 C~2nvy 2016 01 07.33598 03 03 03.665 +16 29 16.35 24.2w 15VS168 568 C~2nvy 2016 02 03.22261 03 02 40.034 +16 28 14.91 24.7w 15VS168 568 C~2nvy 2016 02 03.22917 03 02 40.002 +16 28 15.31 24.5w 15VS168 568 C~2nvy 2016 02 10.25584 03 02 43.038 +16 28 37.60 24.4w 15VS168 568 C~2nvz 2016 09 07.55628 03 12 54.743 +17 11 22.42 15VS168 568 C~2nvz 2016 09 26.61685 03 12 16.680 +17 08 48.88 24.6w 15VS168 568 C~2nvz 2016 10 10.43169 03 11 35.687 +17 06 06.61 24.4w 15VS168 568 C~2nvz 2016 10 10.49031 03 11 35.485 +17 06 05.99 24.5w 15VS168 568 C~2nvz 2016 10 27.52577 03 10 33.789 +17 02 03.77 24.7w 15VS168 568 C~2nvz 2016 11 03.55078 03 10 06.075 +17 00 15.79 24.5w 15VS168 568 C~2nvz 2016 12 28.39306 03 06 48.264 +16 47 42.35 25.0w 15VS168 568 C~2nvz 2016 12 28.40104 03 06 48.247 +16 47 42.22 24.6w 15VS168 568 C~2nvz 2016 12 29.35861 03 06 45.852 +16 47 33.59 24.6w 15VS168 568 C~2nvz 2017 01 01.25561 03 06 38.952 +16 47 08.68 25.0w 15VS168 568 C~2nvz 2017 01 02.36563 03 06 36.433 +16 47 00.16 24.5w 15VS168 568 C~2nvz 2017 01 26.25322 03 06 03.609 +16 45 16.95 24.5w 15VS168 568 C~2nvz 2022 10 29.407370 03 31 39.741 +18 41 04.44 24.1G 15VS168 G37 C~5z6x 2022 10 29.455840 03 31 39.532 +18 41 03.40 15VS168 G37 C~5z6x 2022 10 29.503680 03 31 39.349 +18 41 02.68 15VS168 G37 C~5z6x
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 -0.07 0.00 -0.02
2 0.0112 0.00 0.09 0.00 -0.03
3 0.7263 0.00 -0.00 0.00 -0.03
4 0.7976 0.00 -0.12 0.00 0.00
5 0.8137 0.00 -0.03 0.00 0.03
6 0.8848 0.00 0.03 0.00 0.03
7 0.8849 0.00 -0.01 0.00 -0.00
8 0.9637 0.00 -0.01 0.00 0.03
9 0.9638 0.00 -0.14 0.00 0.10
10 0.9640 0.00 0.17 0.00 0.10
11 0.9642 0.00 0.08 0.00 0.00
12 0.9670 0.00 0.02 0.00 0.02
13 0.9937 0.00 0.10 0.00 0.01
14 0.9939 0.00 0.03 0.00 -0.03
15 1.0651 0.00 0.10 0.00 0.01
16 1.0652 0.00 0.09 0.00 0.02
17 1.1173 0.00 -0.06 0.00 -0.00
18 1.1199 0.00 0.01 0.00 -0.09
19 1.1335 0.00 -0.02 0.00 -0.05
20 1.2071 0.00 0.22 0.00 -0.19
21 1.2072 0.00 -0.27 0.00 0.19
22 1.2264 0.00 -0.15 0.00 -0.06
23 1.8022 0.00 -0.04 0.00 0.07
24 1.8544 0.00 0.07 0.00 -0.17
25 1.8922 0.00 0.03 0.00 -0.05
26 1.8923 0.00 -0.03 0.00 0.09
27 1.9390 0.00 0.01 0.00 0.02
28 1.9582 0.00 -0.08 0.00 0.13
29 2.1084 0.00 -0.04 0.00 0.03
30 2.1084 0.00 0.02 0.00 -0.03
31 2.1110 0.00 0.05 0.00 -0.02
32 2.1189 0.00 0.10 0.00 -0.23
33 2.1220 0.00 -0.01 0.00 0.12
34 2.1874 0.00 0.04 0.00 0.04
35 7.9428 0.00 0.15 0.00 0.29
36 7.9429 0.00 -0.12 0.00 -0.11
37 7.9430 0.00 -0.05 0.00 -0.18
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.
15VS168 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 47.205 47.205 47.205 ecceobj 0.171 0.171 0.171 incobj 3.486 3.486 3.486 qmin 37.831 37.841 37.829 qmax 56.512 56.484 56.559 amean 46.932 46.932 46.932 amin 46.524 46.523 46.525 amax 47.422 47.434 47.426 emean 0.176 0.176 0.176 emin 0.162 0.162 0.162 emax 0.192 0.192 0.193 imean 2.235 2.235 2.235 imin 1.673 1.673 1.673 imax 2.830 2.829 2.830 excite_mean 0.181 0.181 0.181 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 188.5 188.4 188.5 kozaiamp 179.9 180.0 180.0