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: 15VP167 # Created Sun Dec 22 02:10:34 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 41 observations of 41 # Arc: 9.22y # First observation: 2015/08/12 # Last observation: 2024/11/01 # Chi-squared of fit: 8.18 DOF: 76 RMS: 0.08 # Min/Max residuals: -0.29 0.23 # Exact a, adot, b, bdot, g, gdot: 1.596316E-05 2.739206E-02 6.179373E-06 1.087089E-02 2.724193E-02 2.733313E-03 # Covariance matrix: 1.3781E-13 -3.9180E-14 1.0131E-14 -1.3003E-14 7.3544E-14 -1.2118E-13 -3.9180E-14 9.2627E-14 -2.1017E-14 3.7041E-14 2.8037E-14 3.6640E-13 1.0131E-14 -2.1017E-14 5.1781E-14 -1.7735E-14 -4.0121E-15 -8.8935E-14 -1.3003E-14 3.7041E-14 -1.7735E-14 2.2199E-14 1.2102E-14 1.5723E-13 7.3544E-14 2.8037E-14 -4.0121E-15 1.2102E-14 9.5599E-14 1.2741E-13 -1.2118E-13 3.6640E-13 -8.8935E-14 1.5723E-13 1.2741E-13 1.5560E-12 # lat0 lon0 xBary yBary zBary JD0 -3.032306 49.429901 1.015769 0.000065 -0.001110 2457247.082569 # Heliocentric elements and errors Epoch: 2457246.5000 = 2015/08/12 Mean Anomaly: 30.28743 +/- 0.013 Argument of Peri: 313.90983 +/- 0.017 Long of Asc Node: 55.48036 +/- 0.000 Inclination: 21.73296 +/- 0.000 Eccentricity: 0.11541508 +/- 0.0000 Semi-Major Axis: 40.60655093 +/- 0.0022 Time of Perihelion: 2449294.9381 +/- 3.4 Perihelion: 35.91994276 +/- 0.0028 Aphelion: 45.29315909 +/- 0.0031 Period (y) 258.7631 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.60906545 +/- 0.0003 Ecliptic Y 27.18496853 +/- 0.0003 Ecliptic Z -1.94156559 +/- 0.0000 Ecliptic XDOT -0.00187722 +/- 0.0000 Ecliptic YDOT 0.00203637 +/- 0.0000 Ecliptic ZDOT 0.00107653 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.72050253 +/- 0.0003 Geocenter to KBO 36.70807978 +/- 0.0004 # Hcoef: 8.44
The following table shows the complete astrometric record for 15VP167. 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 (15VP167) followed by the observatory code and reference code for the source of the astrometry.
2015 08 12.58178 03 11 18.998 +14 40 00.79 24.2w 15VP167 568 C~2lVj 2015 08 12.58594 03 11 19.004 +14 40 00.50 24.2w 15VP167 568 C~2lVj 2015 09 07.54100 03 11 07.731 +14 39 49.60 24.3w 15VP167 568 C~2lVj 2015 09 12.53775 03 10 57.478 +14 39 17.19 24.4w 15VP167 568 C~2lVj 2015 10 07.48475 03 09 32.038 +14 34 36.31 24.5w 15VP167 568 C~2lVj 2015 10 08.48746 03 09 27.574 +14 34 21.63 24.3w 15VP167 568 C~2lVj 2015 10 08.54568 03 09 27.298 +14 34 20.91 24.0w 15VP167 568 C~2lVj 2015 10 08.55734 03 09 27.238 +14 34 20.59 24.1w 15VP167 568 C~2lVj 2015 10 08.57055 03 09 27.183 +14 34 20.24 24.1w 15VP167 568 C~2lVj 2015 11 06.30199 03 06 57.267 +14 26 24.78 24.0r 15VP167 568 C~2lVj 2015 11 06.36535 03 06 56.913 +14 26 23.79 24.1r 15VP167 568 C~2lVj 2015 11 06.43596 03 06 56.507 +14 26 22.55 23.9r 15VP167 568 C~2lVj 2015 11 06.50529 03 06 56.102 +14 26 21.24 24.0r 15VP167 568 C~2lVj 2015 11 07.52528 03 06 50.311 +14 26 03.72 24.2w 15VP167 568 C~2lVj 2015 11 17.29127 03 05 54.706 +14 23 19.40 24.2w 15VP167 568 C~2lVj 2015 11 17.34053 03 05 54.419 +14 23 18.66 24.2w 15VP167 568 C~2lVj 2015 12 06.41938 03 04 10.926 +14 18 41.46 24.3w 15VP167 568 C~2lVj 2015 12 13.35388 03 03 37.207 +14 17 23.75 24.4w 15VP167 568 C~2lVj 2015 12 13.41241 03 03 36.938 +14 17 23.16 24.5w 15VP167 568 C~2lVj 2016 01 01.40713 03 02 22.303 +14 15 19.72 24.5w 15VP167 568 C~2lVj 2016 01 07.35336 03 02 05.427 +14 15 11.94 24.3w 15VP167 568 C~2lVj 2016 02 04.27768 03 01 35.868 +14 18 17.52 24.2w 15VP167 568 C~2lVj 2016 02 10.26747 03 01 40.802 +14 19 45.35 24.6w 15VP167 568 C~2lVj 2016 09 06.61716 03 16 45.989 +15 41 17.72 15VP167 568 C~2lVj 2016 09 26.60468 03 15 53.430 +15 38 52.04 24.6w 15VP167 568 C~2lVj 2016 10 10.41386 03 14 56.783 +15 36 02.71 24.4w 15VP167 568 C~2lVj 2016 10 10.47261 03 14 56.506 +15 36 01.87 24.5w 15VP167 568 C~2lVj 2016 10 27.50838 03 13 29.993 +15 31 42.43 24.3w 15VP167 568 C~2lVj 2016 11 03.53341 03 12 50.891 +15 29 47.15 24.2w 15VP167 568 C~2lVj 2016 12 28.40571 03 08 10.720 +15 18 09.06 24.4w 15VP167 568 C~2lVj 2016 12 29.36323 03 08 07.356 +15 18 04.38 23.5w 15VP167 568 C~2lVj 2017 01 01.26044 03 07 57.683 +15 17 52.41 24.2w 15VP167 568 C~2lVj 2017 01 02.37026 03 07 54.160 +15 17 48.78 24.6w 15VP167 568 C~2lVj 2017 01 26.26424 03 07 09.063 +15 18 41.17 24.4w 15VP167 568 C~2lVj 2017 09 16.60944 03 22 05.876 +16 41 14.16 24.5w 15VP167 568 C~2lVj 2017 09 23.54857 03 21 46.229 +16 40 27.34 15VP167 568 C~2lVj 2017 12 16.38250 03 14 41.814 +16 21 42.78 24.3w 15VP167 568 C~2lVj 2017 12 16.38715 03 14 41.794 +16 21 42.69 24.6w 15VP167 568 C~2lVj 2024 11 01.404000 04 00 07.279 +23 19 00.04 24.3G 15VP167 G37 C~8SY2 2024 11 01.450420 04 00 07.031 +23 18 59.62 15VP167 G37 C~8SY2 2024 11 01.498400 04 00 06.787 +23 18 59.29 15VP167 G37 C~8SY2
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 -0.02 0.00 0.02
2 0.0000 0.00 0.02 0.00 -0.29
3 0.0711 0.00 0.05 0.00 0.02
4 0.0848 0.00 -0.01 0.00 0.08
5 0.1531 0.00 0.00 0.00 0.04
6 0.1558 0.00 0.14 0.00 0.02
7 0.1560 0.00 0.01 0.00 0.16
8 0.1560 0.00 -0.08 0.00 0.01
9 0.1560 0.00 0.00 0.00 -0.14
10 0.2347 0.00 -0.16 0.00 0.02
11 0.2349 0.00 -0.00 0.00 0.11
12 0.2351 0.00 0.02 0.00 0.08
13 0.2352 0.00 -0.05 0.00 -0.03
14 0.2380 0.00 0.01 0.00 0.01
15 0.2648 0.00 0.07 0.00 0.00
16 0.2649 0.00 0.02 0.00 0.06
17 0.3171 0.00 0.12 0.00 0.02
18 0.3361 0.00 -0.07 0.00 0.02
19 0.3363 0.00 0.06 0.00 0.02
20 0.3883 0.00 -0.13 0.00 -0.03
21 0.4046 0.00 0.04 0.00 -0.08
22 0.4810 0.00 -0.04 0.00 -0.02
23 0.4974 0.00 -0.02 0.00 -0.10
24 1.0706 0.00 -0.13 0.00 0.11
25 1.1253 0.00 -0.05 0.00 -0.04
26 1.1631 0.00 0.07 0.00 0.06
27 1.1633 0.00 0.05 0.00 0.03
28 1.2099 0.00 0.08 0.00 -0.01
29 1.2292 0.00 0.08 0.00 0.05
30 1.3794 0.00 -0.07 0.00 -0.02
31 1.3820 0.00 -0.02 0.00 -0.01
32 1.3899 0.00 0.13 0.00 -0.03
33 1.3930 0.00 0.04 0.00 0.01
34 1.4584 0.00 0.07 0.00 -0.01
35 2.0973 0.00 0.01 0.00 -0.02
36 2.1163 0.00 0.01 0.00 -0.13
37 2.3458 0.00 -0.03 0.00 0.03
38 2.3458 0.00 -0.00 0.00 -0.01
39 9.2233 0.00 -0.20 0.00 0.04
40 9.2235 0.00 -0.07 0.00 -0.03
41 9.2236 0.00 0.23 0.00 0.00
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.
15VP167 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.020 41.020 41.020 ecceobj 0.125 0.125 0.125 incobj 21.669 21.669 21.669 qmin 34.374 34.377 34.373 qmax 47.322 47.318 47.324 amean 40.698 40.698 40.698 amin 40.349 40.345 40.354 amax 41.073 41.070 41.072 emean 0.125 0.125 0.125 emin 0.093 0.093 0.093 emax 0.153 0.153 0.153 imean 20.123 20.123 20.126 imin 19.123 19.123 19.133 imax 21.014 21.015 21.013 excite_mean 0.366 0.366 0.366 fracstop 1.000 1.000 1.000 cjmean 2.905 2.905 2.905 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 182.0 182.2 181.9 kozaiamp 180.0 180.0 180.0