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: 15VF168 # Created Sun Dec 22 02:10:34 2024 # Orbit generated from Bernstein formalism # Fitting 28 observations of 28 # Arc: 2.13y # First observation: 2014/11/17 # Last observation: 2017/01/02 Preliminary a, adot, b, bdot, g, gdot: -0.000325 0.039221 0.000153 -0.027194 0.035592 0.000000 # Chi-squared of fit: 9.90 DOF: 50 RMS: 0.11 # Min/Max residuals: -0.32 0.22 # Exact a, adot, b, bdot, g, gdot: 1.774164E-05 3.899581E-02 -1.276239E-05 -2.712854E-02 3.578795E-02 -3.291014E-03 # Covariance matrix: 3.2166E-13 -4.0857E-13 -5.6831E-14 1.6073E-13 -1.4143E-13 -2.8743E-12 -4.0857E-13 7.7927E-13 1.4623E-13 -4.1264E-13 3.0750E-13 7.3854E-12 -5.6831E-14 1.4623E-13 2.5957E-13 -2.6607E-13 7.0312E-14 1.7570E-12 1.6073E-13 -4.1264E-13 -2.6607E-13 4.4086E-13 -2.0114E-13 -4.9563E-12 -1.4143E-13 3.0750E-13 7.0312E-14 -2.0114E-13 3.1574E-13 3.5816E-12 -2.8743E-12 7.3854E-12 1.7570E-12 -4.9563E-12 3.5816E-12 8.8719E-11 # lat0 lon0 xBary yBary zBary JD0 -0.889863 46.464928 -0.140144 -0.015053 -0.979363 2456978.921828 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 351.46636 +/- 0.024 Argument of Peri: 198.11744 +/- 0.047 Long of Asc Node: 225.51153 +/- 0.000 Inclination: 34.82048 +/- 0.000 Eccentricity: 0.30396587 +/- 0.0001 Semi-Major Axis: 41.14700226 +/- 0.0038 Time of Perihelion: 2459255.7691 +/- 6.3 Perihelion: 28.63971800 +/- 0.0042 Aphelion: 53.65428653 +/- 0.0060 Period (y) 263.9463 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 19.81438517 +/- 0.0003 Ecliptic Y 21.06248473 +/- 0.0003 Ecliptic Z -0.43433928 +/- 0.0000 Ecliptic XDOT -0.00236259 +/- 0.0000 Ecliptic YDOT 0.00184403 +/- 0.0000 Ecliptic ZDOT -0.00207113 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 28.92104378 +/- 0.0003 Geocenter to KBO 27.94236908 +/- 0.0004 # Hcoef: 10.25
The following table shows the complete astrometric record for 15VF168. 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 (15VF168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.42105 02 57 03.194 +15 54 27.20 24.8r 15VF168 568 C~2lVl 2014 11 17.53510 02 57 02.433 +15 54 22.00 24.6r 15VF168 568 C~2lVl 2014 11 19.33265 02 56 50.518 +15 53 02.69 24.8r 15VF168 568 C~2lVl 2014 11 23.43547 02 56 23.584 +15 50 03.65 24.7r 15VF168 568 C~2lVl 2015 08 11.61007 03 13 47.077 +15 56 38.93 25.2w 15VF168 568 C~2lVl 2015 09 06.62757 03 13 52.248 +15 48 23.09 25.2w 15VF168 568 C~2lVl 2015 09 12.51723 03 13 40.791 +15 45 40.99 25.0w 15VF168 568 C~2lVl 2015 10 07.45292 03 12 06.371 +15 31 22.00 25.0w 15VF168 568 C~2lVl 2015 10 08.45753 03 12 01.217 +15 30 42.90 25.0w 15VF168 568 C~2lVl 2015 10 08.51654 03 12 00.907 +15 30 40.23 24.9w 15VF168 568 C~2lVl 2015 11 07.36426 03 08 57.045 +15 09 32.79 24.7r 15VF168 568 C~2lVl 2015 11 07.40638 03 08 56.757 +15 09 30.88 25.4r 15VF168 568 C~2lVl 2015 11 07.44859 03 08 56.461 +15 09 29.01 24.8r 15VF168 568 C~2lVl 2015 11 10.53471 03 08 35.525 +15 07 13.81 24.5w 15VF168 568 C~2lVl 2015 11 17.28542 03 07 49.750 +15 02 20.85 24.8w 15VF168 568 C~2lVl 2015 11 17.33469 03 07 49.397 +15 02 18.81 24.9w 15VF168 568 C~2lVl 2015 12 06.41351 03 05 46.402 +14 49 18.69 25.8w 15VF168 568 C~2lVl 2015 12 13.34802 03 05 06.693 +14 45 03.88 24.9w 15VF168 568 C~2lVm 2015 12 13.40657 03 05 06.378 +14 45 01.78 24.8w 15VF168 568 C~2lVm 2016 01 01.40134 03 03 40.346 +14 35 18.53 25.1w 15VF168 568 C~2lVm 2016 01 07.34755 03 03 21.735 +14 32 55.99 25.1w 15VF168 568 C~2lVm 2016 02 04.27768 03 02 57.844 +14 26 39.22 25.3w 15VF168 568 C~2lVm 2016 02 10.26747 03 03 07.073 +14 26 21.86 25.7w 15VF168 568 C~2lVm 2016 09 25.60501 03 23 32.266 +14 43 28.19 24.8w 15VF168 568 C~2lVm 2016 10 10.58850 03 22 24.763 +14 33 51.76 24.9w 15VF168 568 C~2lVm 2016 11 02.50837 03 20 06.281 +14 17 42.22 15VF168 568 C~2lVm 2016 11 04.48449 03 19 53.109 +14 16 16.86 25.1w 15VF168 568 C~2lVm 2017 01 02.42405 03 14 06.148 +13 41 18.38 15VF168 568 C~2lVm
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 -0.11 0.00 0.16
2 0.0003 -12.00 0.03 -1.86 -0.01
3 0.0052 -199.37 0.15 -28.88 -0.07
4 0.0165 -622.94 -0.00 -89.56 0.13
5 0.7315 13979.80 0.04 -3865.83 -0.02
6 0.8028 13920.08 0.16 -4364.97 -0.05
7 0.8189 13716.70 -0.02 -4477.45 0.05
8 0.8872 12166.94 -0.32 -4941.43 -0.14
9 0.8899 12084.40 -0.10 -4959.13 0.21
10 0.8901 12079.35 -0.15 -4960.50 -0.14
11 0.9718 9167.99 0.05 -5462.66 0.07
12 0.9719 9163.45 0.06 -5463.36 -0.01
13 0.9720 9158.80 -0.01 -5464.00 -0.01
14 0.9805 8829.62 -0.01 -5511.62 -0.09
15 0.9989 8110.49 0.15 -5612.66 -0.11
16 0.9991 8105.00 -0.04 -5613.22 0.01
17 1.0513 6173.87 -0.04 -5874.40 -0.10
18 1.0703 5549.32 -0.06 -5960.47 0.06
19 1.0705 5544.34 0.10 -5961.23 -0.00
20 1.1225 4181.99 0.05 -6175.91 0.03
21 1.1387 3882.61 0.17 -6237.76 -0.24
22 1.2152 3444.26 -0.08 -6503.32 -0.06
23 1.2316 3568.30 -0.10 -6557.40 0.09
24 1.8568 21074.58 0.12 -10352.31 0.22
25 1.8978 19968.48 0.02 -10658.06 0.03
26 1.9605 17754.23 -0.01 -11072.74 0.09
27 1.9660 17545.42 0.05 -11105.16 -0.09
28 2.1273 12085.61 -0.10 -11793.02 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.
15VF168 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 41.441 41.452 41.431 ecceobj 0.307 0.308 0.307 incobj 34.743 34.743 34.743 qmin 28.483 17.445 24.408 qmax 54.258 63.410 58.758 amean 40.945 40.030 40.886 amin 40.303 38.124 39.468 amax 41.558 41.636 42.599 emean 0.296 0.421 0.299 emin 0.283 0.267 0.209 emax 0.308 0.565 0.406 imean 35.722 29.904 35.364 imin 35.507 21.506 32.304 imax 35.976 36.226 37.251 excite_mean 0.655 0.664 0.654 fracstop 0.006 0.213 0.956 cjmean 2.556 2.536 2.545 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 194.3 151.2 200.9 kozaiamp 4.1 36.0 180.0