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: 15VW167 # Created Tue Apr 1 01:10:39 2025 # Orbit generated from Bernstein formalism # Fitting 43 observations of 43 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000012 0.027727 -0.000002 0.000024 0.027047 0.000000 # Chi-squared of fit: 5.41 DOF: 80 RMS: 0.06 # Min/Max residuals: -0.17 0.17 # Exact a, adot, b, bdot, g, gdot: 1.555978E-05 2.789354E-02 -2.366767E-07 2.477991E-05 2.716893E-02 -1.616606E-05 # Covariance matrix: 2.4000E-13 -2.6074E-13 4.5743E-16 -3.5342E-16 -1.1899E-13 -2.2017E-12 -2.6074E-13 3.9726E-13 -8.2126E-16 6.6128E-16 2.1152E-13 4.0333E-12 4.5743E-16 -8.2126E-16 1.3632E-13 -7.0976E-14 -7.5164E-16 -9.5809E-15 -3.5342E-16 6.6128E-16 -7.0976E-14 4.9504E-14 2.0056E-16 7.6246E-15 -1.1899E-13 2.1152E-13 -7.5164E-16 2.0056E-16 2.2570E-13 2.4748E-12 -2.2017E-12 4.0333E-12 -9.5809E-15 7.6246E-15 2.4748E-12 4.6782E-11 # lat0 lon0 xBary yBary zBary JD0 -1.311247 47.327113 -0.123131 -0.022319 -0.981529 2456978.792408 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 2.77679 +/- 1.578 Argument of Peri: 269.57245 +/- 1.607 Long of Asc Node: 135.08421 +/- 0.020 Inclination: 1.27840 +/- 0.000 Eccentricity: 0.00880291 +/- 0.0000 Semi-Major Axis: 38.12266410 +/- 0.0019 Time of Perihelion: 2456307.3472 +/- 376.9 Perihelion: 37.78707376 +/- 0.0024 Aphelion: 38.45825444 +/- 0.0025 Period (y) 235.3873 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.51336955 +/- 0.0004 Ecliptic Y 27.86130886 +/- 0.0005 Ecliptic Z -0.84229370 +/- 0.0000 Ecliptic XDOT -0.00207199 +/- 0.0000 Ecliptic YDOT 0.00189912 +/- 0.0000 Ecliptic ZDOT 0.00000264 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.78748491 +/- 0.0005 Geocenter to KBO 36.80674410 +/- 0.0006 # Hcoef: 8.26
The following table shows the complete astrometric record for 15VW167. 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 (15VW167) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29163 03 00 59.170 +15 44 48.76 24.2r 15VW167 568 C~2lVk 2014 11 17.40051 03 00 58.558 +15 44 46.23 23.7r 15VW167 568 C~2lVk 2014 11 17.51464 03 00 57.939 +15 44 43.81 23.9r 15VW167 568 C~2lVk 2014 11 19.30670 03 00 48.350 +15 44 03.89 23.9r 15VW167 568 C~2lVk 2014 11 23.41007 03 00 26.582 +15 42 34.13 23.8r 15VW167 568 C~2lVk 2015 08 11.59273 03 12 25.546 +16 33 49.02 24.2w 15VW167 568 C~2lVk 2015 09 06.62350 03 12 21.249 +16 32 38.23 24.0w 15VW167 568 C~2lVk 2015 10 07.47166 03 10 50.853 +16 25 46.72 24.6w 15VW167 568 C~2lVk 2015 10 08.45165 03 10 46.720 +16 25 28.97 24.6w 15VW167 568 C~2lVk 2015 10 08.51072 03 10 46.469 +16 25 27.94 24.1w 15VW167 568 C~2lVk 2015 11 06.29151 03 08 23.527 +16 15 31.49 23.7r 15VW167 568 C~2lVk 2015 11 06.35485 03 08 23.182 +16 15 29.95 23.8r 15VW167 568 C~2lVk 2015 11 06.42547 03 08 22.792 +16 15 28.49 23.7r 15VW167 568 C~2lVk 2015 11 06.49480 03 08 22.415 +16 15 26.93 23.6r 15VW167 568 C~2lVk 2015 11 07.51356 03 08 16.868 +16 15 04.35 23.9w 15VW167 568 C~2lVk 2015 11 17.27960 03 07 23.659 +16 11 28.73 23.8w 15VW167 568 C~2lVk 2015 11 17.32888 03 07 23.385 +16 11 27.76 24.0w 15VW167 568 C~2lVk 2015 12 06.40765 03 05 44.238 +16 04 54.62 24.6w 15VW167 568 C~2lVk 2015 12 13.34220 03 05 11.963 +16 02 49.73 23.9w 15VW167 568 C~2lVk 2015 12 13.40075 03 05 11.698 +16 02 48.72 24.4w 15VW167 568 C~2lVk 2016 01 01.39556 03 04 00.466 +15 58 23.87 24.4w 15VW167 568 C~2lVk 2016 01 07.34177 03 03 44.464 +15 57 28.80 24.1w 15VW167 568 C~2lVk 2016 02 04.27190 03 03 17.914 +15 56 37.95 24.8w 15VW167 568 C~2lVk 2016 02 10.26162 03 03 23.258 +15 57 13.36 24.1w 15VW167 568 C~2lVk 2016 09 06.60560 03 18 39.839 +16 57 24.27 15VW167 568 C~2lVk 2016 09 26.59656 03 17 51.864 +16 53 44.55 24.6w 15VW167 568 C~2lVk 2016 10 10.40230 03 16 58.705 +16 50 00.36 24.2w 15VW167 568 C~2lVk 2016 10 10.46065 03 16 58.439 +16 49 59.36 24.2w 15VW167 568 C~2lVk 2016 10 27.49679 03 15 36.354 +16 44 25.88 24.3w 15VW167 568 C~2lVk 2016 11 02.60285 03 15 04.008 +16 42 16.86 24.0w 15VW167 568 C~2lVk 2016 11 03.52184 03 14 59.072 +16 41 57.34 24.1w 15VW167 568 C~2lVk 2016 12 24.29598 03 10 45.379 +16 25 49.40 24.6w 15VW167 568 C~2lVk 2016 12 29.36878 03 10 27.426 +16 24 46.09 24.8w 15VW167 568 C~2lVk 2017 01 01.26608 03 10 18.163 +16 24 14.15 24.6w 15VW167 568 C~2lVk 2017 01 02.37586 03 10 14.813 +16 24 02.60 24.1w 15VW167 568 C~2lVk 2017 01 02.39822 03 10 14.748 +16 24 02.31 24.1w 15VW167 568 C~2lVk 2017 01 26.27054 03 09 32.370 +16 22 00.75 24.1w 15VW167 568 C~2lVk 2017 01 26.28489 03 09 32.361 +16 22 00.77 24.1w 15VW167 568 C~2lVk 2017 09 17.60038 03 24 41.014 +17 19 57.48 15VW167 568 C~2lVk 2017 09 23.57901 03 24 25.282 +17 18 48.81 24.4w 15VW167 568 C~2lVk 2017 09 23.58734 03 24 25.260 +17 18 48.85 24.9w 15VW167 568 C~2lVk 2017 09 24.59522 03 24 22.293 +17 18 36.13 15VW167 568 C~2lVk 2017 12 16.39181 03 17 41.749 +16 53 03.63 24.4w 15VW167 568 C~2lVk
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 0.14 0.00 0.05
2 0.0003 -9.19 -0.12 0.05 0.01
3 0.0006 -18.45 -0.01 0.23 0.12
4 0.0055 -162.53 -0.03 0.70 0.00
5 0.0168 -489.39 -0.04 2.72 -0.02
6 0.7318 10324.63 0.01 123.44 -0.03
7 0.8031 10246.00 -0.17 71.64 0.11
8 0.8876 8880.16 -0.03 23.24 -0.04
9 0.8902 8818.00 -0.06 22.12 -0.02
10 0.8904 8814.24 0.03 22.10 -0.00
11 0.9692 6669.06 0.07 3.67 0.02
12 0.9694 6663.86 0.07 3.54 -0.15
13 0.9696 6658.05 0.09 3.66 -0.05
14 0.9698 6652.40 0.17 3.63 -0.09
15 0.9725 6569.30 -0.01 3.60 -0.05
16 0.9993 5772.47 0.06 4.74 -0.09
17 0.9994 5768.41 0.05 4.88 0.02
18 1.0517 4285.86 -0.01 17.78 -0.00
19 1.0706 3804.05 -0.03 25.63 -0.02
20 1.0708 3800.09 -0.01 25.72 -0.03
21 1.1228 2739.58 -0.00 54.60 -0.04
22 1.1391 2502.55 0.00 65.57 0.07
23 1.2156 2120.49 -0.04 122.87 0.08
24 1.2320 2204.38 -0.06 135.51 -0.03
25 1.8051 15906.26 -0.01 74.95 -0.03
26 1.8598 15180.27 -0.00 41.46 0.05
27 1.8976 14381.03 0.05 23.95 -0.03
28 1.8978 14377.07 -0.04 23.98 0.04
29 1.9444 13146.61 -0.02 11.12 0.05
30 1.9612 12662.48 -0.09 8.98 -0.04
31 1.9637 12588.65 0.01 8.85 0.01
32 2.1027 8804.88 -0.04 47.01 -0.04
33 2.1166 8538.59 0.09 55.51 0.06
34 2.1245 8401.40 -0.07 60.63 0.17
35 2.1275 8351.78 -0.01 62.49 0.02
36 2.1276 8350.80 0.01 62.47 -0.05
37 2.1930 7729.82 0.00 109.98 0.00
38 2.1930 7729.70 0.01 110.03 0.02
39 2.8345 21300.86 0.04 60.65 0.06
40 2.8509 21063.07 -0.10 50.89 -0.11
41 2.8509 21062.77 -0.02 51.01 0.02
42 2.8537 21017.99 0.11 49.40 -0.05
43 3.0804 15028.63 -0.01 39.74 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.
15VW167 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 38.394 38.400 38.388 ecceobj 0.016 0.016 0.016 incobj 1.278 1.278 1.278 qmin 36.636 36.600 36.606 qmax 39.775 39.782 39.775 amean 38.124 38.129 38.118 amin 37.847 37.854 37.829 amax 38.410 38.419 38.397 emean 0.018 0.018 0.018 emin 0.000 0.000 0.000 emax 0.036 0.036 0.036 imean 1.468 1.471 1.466 imin 0.570 0.564 0.569 imax 2.209 2.215 2.204 excite_mean 0.032 0.033 0.032 fracstop 1.000 1.000 1.000 cjmean 3.039 3.040 3.039 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 190.4 191.1 190.5 kozaiamp 180.0 180.0 180.0