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: 15VF166 # Created Sun Dec 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000071 0.032000 0.000002 -0.000454 0.028067 0.000000 # Chi-squared of fit: 4.84 DOF: 52 RMS: 0.07 # Min/Max residuals: -0.19 0.17 # Exact a, adot, b, bdot, g, gdot: 1.803130E-05 3.136550E-02 -3.794247E-07 -4.423841E-04 2.766653E-02 -6.162066E-03 # Covariance matrix: 1.7371E-13 -4.8802E-14 1.0574E-15 -7.8223E-16 9.6074E-14 6.1897E-13 -4.8802E-14 4.6787E-13 4.6868E-15 -1.0326E-14 2.6944E-13 8.9185E-12 1.0574E-15 4.6868E-15 1.2785E-13 -9.2438E-14 4.2770E-15 1.1068E-13 -7.8223E-16 -1.0326E-14 -9.2438E-14 1.0854E-13 -7.0077E-15 -2.6137E-13 9.6074E-14 2.6944E-13 4.2770E-15 -7.0077E-15 3.0097E-13 5.9638E-12 6.1897E-13 8.9185E-12 1.1068E-13 -2.6137E-13 5.9638E-12 2.2638E-10 # lat0 lon0 xBary yBary zBary JD0 -1.336686 52.456934 0.936817 -0.008723 -0.380171 2457273.121609 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 329.91923 +/- 0.024 Argument of Peri: 293.93175 +/- 0.064 Long of Asc Node: 173.59961 +/- 0.019 Inclination: 1.56977 +/- 0.000 Eccentricity: 0.31738175 +/- 0.0005 Semi-Major Axis: 47.73773452 +/- 0.0157 Time of Perihelion: 2467336.9785 +/- 6.3 Perihelion: 32.58664860 +/- 0.0246 Aphelion: 62.88882043 +/- 0.0303 Period (y) 329.8382 +/- 0.16 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.98951417 +/- 0.0004 Ecliptic Y 28.38163807 +/- 0.0006 Ecliptic Z -0.84317107 +/- 0.0000 Ecliptic XDOT -0.00283503 +/- 0.0000 Ecliptic YDOT 0.00140079 +/- 0.0000 Ecliptic ZDOT -0.00002949 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.53417686 +/- 0.0005 Geocenter to KBO 36.14475410 +/- 0.0007 # Hcoef: 8.88
The following table shows the complete astrometric record for 15VF166. 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 (15VF166) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62082 03 21 37.488 +17 05 31.31 24.8w 15VF166 568 C~2lVe 2015 09 12.48448 03 21 29.875 +17 04 50.91 25.1w 15VF166 568 C~2lVe 2015 10 07.52687 03 20 14.449 +16 59 14.27 24.5w 15VF166 568 C~2lVe 2015 10 07.58621 03 20 14.208 +16 59 13.14 24.6w 15VF166 568 C~2lVe 2015 10 09.56611 03 20 05.970 +16 58 38.60 24.9w 15VF166 568 C~2lVe 2015 11 06.33883 03 17 47.313 +16 49 16.98 24.1r 15VF166 568 C~2lVe 2015 11 07.33788 03 17 41.800 +16 48 55.30 24.4r 15VF166 568 C~2lVe 2015 11 07.38006 03 17 41.564 +16 48 54.34 24.4r 15VF166 568 C~2lVe 2015 11 07.42224 03 17 41.324 +16 48 53.31 24.4r 15VF166 568 C~2lVe 2015 12 06.36096 03 15 03.785 +16 38 45.29 24.7w 15VF166 568 C~2lVe 2015 12 06.49848 03 15 03.080 +16 38 42.76 24.5w 15VF166 568 C~2lVe 2016 01 08.25624 03 12 54.104 +16 30 58.22 25.2w 15VF166 568 C~2lVe 2016 09 07.57941 03 28 58.094 +17 30 56.79 15VF166 568 C~2lVe 2016 09 27.51468 03 28 13.598 +17 27 30.43 24.9w 15VF166 568 C~2lVe 2016 09 29.49059 03 28 07.094 +17 27 02.94 24.8w 15VF166 568 C~2lVe 2016 10 05.49370 03 27 45.253 +17 25 31.97 24.6w 15VF166 568 C~2lVe 2016 10 07.49825 03 27 37.307 +17 24 59.85 24.3w 15VF166 568 C~2lVe 2016 10 07.59395 03 27 36.897 +17 24 58.16 24.8w 15VF166 568 C~2lVe 2016 10 09.49835 03 27 29.056 +17 24 26.25 24.8w 15VF166 568 C~2lVe 2016 10 09.57103 03 27 28.751 +17 24 25.01 24.8w 15VF166 568 C~2lVe 2016 11 02.49681 03 25 31.075 +17 16 44.77 24.8w 15VF166 568 C~2lVe 2016 11 04.47292 03 25 20.240 +17 16 03.51 24.5w 15VF166 568 C~2lVe 2016 12 28.46047 03 20 44.833 +16 59 21.79 24.6w 15VF166 568 C~2lVe 2016 12 29.39076 03 20 41.462 +16 59 10.37 24.6w 15VF166 568 C~2lVe 2017 01 27.29772 03 19 39.038 +16 56 08.10 24.8w 15VF166 568 C~2lVe 2017 01 27.30287 03 19 39.030 +16 56 08.03 24.7w 15VF166 568 C~2lVe 2017 09 23.56691 03 35 57.915 +17 53 25.38 24.9w 15VF166 568 C~2lVe 2017 12 13.37172 03 29 21.756 +17 29 10.06 24.6w 15VF166 568 C~2lVe 2017 12 13.40930 03 29 21.577 +17 29 09.50 24.5w 15VF166 568 C~2lVe
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 0.03
2 0.0133 -115.83 0.13 -11.39 -0.09
3 0.0819 -1247.66 -0.09 -61.61 0.04
4 0.0820 -1251.29 -0.02 -61.82 -0.09
5 0.0875 -1374.38 -0.06 -65.03 -0.02
6 0.1635 -3442.21 0.06 -96.58 0.01
7 0.1662 -3524.30 0.07 -97.08 0.09
8 0.1663 -3527.83 0.07 -97.13 0.04
9 0.1665 -3531.42 -0.00 -97.23 -0.06
10 0.2457 -5875.98 -0.07 -95.90 -0.04
11 0.2461 -5886.43 -0.01 -95.69 0.06
12 0.3358 -7799.64 0.00 -56.35 -0.06
13 1.0019 6493.17 0.04 -93.75 0.05
14 1.0565 5824.83 -0.11 -137.98 -0.01
15 1.0619 5727.79 -0.09 -141.80 0.07
16 1.0784 5402.22 -0.05 -153.19 -0.19
17 1.0839 5284.02 0.16 -156.35 0.14
18 1.0841 5277.91 -0.05 -156.55 0.08
19 1.0893 5161.21 0.02 -159.85 -0.00
20 1.0895 5156.67 0.12 -159.97 -0.04
21 1.1550 3409.52 -0.01 -188.89 -0.01
22 1.1604 3248.90 0.03 -190.23 0.04
23 1.3083 -824.27 -0.10 -165.48 0.10
24 1.3108 -873.94 -0.01 -164.21 0.01
25 1.3899 -1786.46 0.02 -111.70 -0.02
26 1.3900 -1786.59 -0.06 -111.74 -0.07
27 2.0450 12654.29 -0.12 -223.80 0.01
28 2.2663 6795.69 -0.01 -279.98 -0.06
29 2.2664 6793.07 0.17 -279.90 -0.02
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.
15VF166 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.214 48.247 48.182 ecceobj 0.319 0.320 0.318 incobj 1.564 1.564 1.564 qmin 32.192 32.165 32.219 qmax 64.037 64.015 64.062 amean 47.797 47.798 47.797 amin 47.329 47.345 47.289 amax 48.390 48.385 48.432 emean 0.311 0.311 0.311 emin 0.298 0.298 0.297 emax 0.324 0.324 0.324 imean 2.458 2.502 2.332 imin 1.706 1.706 1.706 imax 2.830 2.924 2.721 excite_mean 0.314 0.314 0.313 fracstop 1.000 1.000 1.000 cjmean 3.023 3.022 3.023 libcent 0 70.8 70.5 71.4 libamp 0 10.0 5.2 15.9 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 190.1 191.5 202.1 kozaiamp 179.9 180.0 179.9