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: 15VY171 # Created Mon Apr 28 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000032 0.022919 -0.000001 0.000514 0.023709 0.000000 # Chi-squared of fit: 12.76 DOF: 68 RMS: 0.10 # Min/Max residuals: -0.36 0.23 # Exact a, adot, b, bdot, g, gdot: 1.494505E-05 2.308804E-02 6.019077E-08 5.181429E-04 2.393329E-02 5.172941E-04 # Covariance matrix: 3.7326E-13 -4.0614E-13 5.2361E-15 -7.4278E-15 -1.9390E-13 -4.1636E-12 -4.0614E-13 5.6210E-13 -8.1424E-15 1.1898E-14 2.7921E-13 6.6119E-12 5.2361E-15 -8.1424E-15 1.7321E-13 -9.3126E-14 -5.2406E-15 -1.0822E-13 -7.4278E-15 1.1898E-14 -9.3126E-14 6.5267E-14 6.2540E-15 1.5829E-13 -1.9390E-13 2.7921E-13 -5.2406E-15 6.2540E-15 2.6989E-13 3.7009E-12 -4.1636E-12 6.6119E-12 -1.0822E-13 1.5829E-13 3.7009E-12 8.7941E-11 # lat0 lon0 xBary yBary zBary JD0 -2.776600 48.810135 -0.100035 -0.047526 -0.983234 2456978.926868 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 66.77694 +/- 0.292 Argument of Peri: 225.97641 +/- 0.337 Long of Asc Node: 113.56782 +/- 0.011 Inclination: 3.00211 +/- 0.000 Eccentricity: 0.02409811 +/- 0.0004 Semi-Major Axis: 43.15334012 +/- 0.0027 Time of Perihelion: 2437764.1838 +/- 84.0 Perihelion: 42.11342627 +/- 0.0169 Aphelion: 44.19325398 +/- 0.0169 Period (y) 283.4848 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.05389219 +/- 0.0006 Ecliptic Y 32.21410997 +/- 0.0007 Ecliptic Z -2.02406014 +/- 0.0000 Ecliptic XDOT -0.00195101 +/- 0.0000 Ecliptic YDOT 0.00178102 +/- 0.0000 Ecliptic ZDOT 0.00005644 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.76524954 +/- 0.0006 Geocenter to KBO 41.78280371 +/- 0.0009 # Hcoef: 8.59
The following table shows the complete astrometric record for 15VY171. 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 (15VY171) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.42609 03 08 34.004 +14 44 47.61 24.7r 15VY171 568 C~2nwB 2014 11 17.54029 03 08 33.440 +14 44 45.30 24.7r 15VY171 568 C~2nwB 2014 11 23.44182 03 08 05.307 +14 42 56.13 25.5r 15VY171 568 C~2nwB 2015 08 11.60150 03 18 12.709 +15 28 35.02 25.1w 15VY171 568 C~2nwB 2015 09 06.61481 03 18 10.828 +15 26 54.25 24.9w 15VY171 568 C~2nwB 2015 09 12.50491 03 18 01.900 +15 25 59.94 25.2w 15VY171 568 C~2nwB 2015 10 07.42821 03 16 53.112 +15 20 24.11 25.2w 15VY171 568 C~2nwB 2015 10 08.44001 03 16 49.376 +15 20 07.41 25.5w 15VY171 568 C~2nwB 2015 10 08.49908 03 16 49.144 +15 20 06.57 25.5w 15VY171 568 C~2nwB 2015 11 07.34843 03 14 38.305 +15 10 59.72 25.2r 15VY171 568 C~2nwB 2015 11 07.39058 03 14 38.093 +15 10 58.94 24.9r 15VY171 568 C~2nwB 2015 11 07.43274 03 14 37.870 +15 10 58.00 24.8r 15VY171 568 C~2nwB 2015 11 10.51713 03 14 22.941 +15 09 59.53 25.1w 15VY171 568 C~2nwB 2015 11 10.54648 03 14 22.805 +15 09 58.87 25.0w 15VY171 568 C~2nwB 2015 11 17.36382 03 13 49.749 +15 07 50.92 24.8w 15VY171 568 C~2nwB 2015 11 17.41043 03 13 49.517 +15 07 50.00 24.8w 15VY171 568 C~2nwB 2015 12 06.37266 03 12 21.053 +15 02 24.30 24.9w 15VY171 568 C~2nwB 2015 12 13.30706 03 11 51.732 +15 00 42.87 25.1w 15VY171 568 C~2nwB 2015 12 13.36559 03 11 51.487 +15 00 42.09 25.2w 15VY171 568 C~2nwB 2016 01 07.30705 03 10 30.353 +14 56 36.35 25.2w 15VY171 568 C~2nwB 2016 02 11.22942 03 10 05.181 +14 57 21.73 25.5w 15VY171 568 C~2nwB 2016 09 07.56785 03 23 19.749 +15 48 25.76 15VY171 568 C~2nwB 2016 09 27.50655 03 22 36.905 +15 44 44.28 25.3w 15VY171 568 C~2nwB 2016 10 10.44325 03 21 52.973 +15 41 28.41 25.1w 15VY171 568 C~2nwB 2016 10 10.50202 03 21 52.740 +15 41 27.50 25.2w 15VY171 568 C~2nwB 2016 10 10.51973 03 21 52.666 +15 41 27.27 25.2w 15VY171 568 C~2nwB 2016 11 02.51417 03 20 12.651 +15 34 38.61 24.9w 15VY171 568 C~2nwB 2016 11 04.38927 03 20 03.712 +15 34 03.88 25.2w 15VY171 568 C~2nwB 2016 12 24.31885 03 16 20.278 +15 20 54.37 25.2w 15VY171 568 C~2nwB 2016 12 24.33677 03 16 20.209 +15 20 54.39 24.2w 15VY171 568 C~2nwB 2017 01 02.42106 03 15 51.927 +15 19 33.80 24.8w 15VY171 568 C~2nwB 2017 01 02.43952 03 15 51.860 +15 19 33.64 24.9w 15VY171 568 C~2nwB 2017 01 26.34976 03 15 10.318 +15 18 25.46 25.3w 15VY171 568 C~2nwB 2017 09 16.63393 03 28 17.293 +16 08 21.90 25.0w 15VY171 568 C~2nwB 2017 09 17.59434 03 28 15.379 +16 08 11.93 25.4w 15VY171 568 C~2nwB 2017 09 23.57295 03 28 01.655 +16 07 04.46 24.9w 15VY171 568 C~2nwB 2017 12 16.35926 03 22 04.266 +15 44 33.10 25.0w 15VY171 568 C~2nwB
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 0.06 0.00 0.06
2 0.0003 -8.50 -0.06 -0.01 -0.06
3 0.0165 -430.94 0.11 5.57 -0.36
4 0.7315 8782.46 0.23 307.04 -0.03
5 0.8027 8729.88 -0.14 216.74 -0.02
6 0.8188 8590.86 -0.03 197.90 -0.08
7 0.8871 7541.23 0.22 133.47 -0.00
8 0.8898 7484.63 -0.02 131.50 -0.00
9 0.8900 7481.16 -0.10 131.57 0.16
10 0.9717 5508.63 0.17 102.07 -0.07
11 0.9718 5505.46 0.10 102.13 -0.03
12 0.9720 5502.10 -0.16 102.08 -0.10
13 0.9804 5278.05 -0.25 102.84 0.17
14 0.9805 5275.98 -0.16 102.73 0.05
15 0.9991 4780.28 -0.03 106.12 0.03
16 0.9993 4776.79 -0.08 106.12 -0.02
17 1.0512 3454.55 -0.08 132.94 0.05
18 1.0702 3018.01 -0.03 148.64 0.03
19 1.0703 3014.38 -0.05 148.84 0.06
20 1.1386 1815.70 0.05 227.24 0.22
21 1.2342 1476.53 0.04 369.09 0.04
22 1.8074 13388.00 -0.02 316.22 0.02
23 1.8620 12730.90 0.07 259.57 0.01
24 1.8974 12065.16 0.04 232.37 -0.02
25 1.8975 12061.67 -0.01 232.35 0.04
26 1.8976 12060.57 -0.06 232.40 0.11
27 1.9605 10554.83 0.06 208.86 -0.05
28 1.9657 10420.73 -0.06 208.65 0.12
29 2.1024 7090.25 0.10 287.25 -0.01
30 2.1024 7089.29 0.07 287.53 0.21
31 2.1273 6672.90 0.12 317.23 -0.12
32 2.1273 6671.93 -0.10 317.33 -0.08
33 2.1928 6073.61 0.04 409.83 -0.04
34 2.8315 17867.50 -0.08 394.68 -0.01
35 2.8341 17838.08 0.04 391.87 -0.08
36 2.8505 17628.21 0.06 375.67 -0.05
37 3.0799 12270.80 -0.07 369.39 -0.13
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.
15VY171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.483 43.491 43.474 ecceobj 0.031 0.032 0.031 incobj 3.004 3.004 3.004 qmin 40.970 40.947 40.981 qmax 45.576 45.560 45.539 amean 43.156 43.170 43.148 amin 42.819 42.836 42.828 amax 43.498 43.505 43.479 emean 0.031 0.032 0.030 emin 0.010 0.010 0.009 emax 0.048 0.048 0.047 imean 1.913 1.911 1.914 imin 0.886 0.887 0.886 imax 2.734 2.728 2.736 excite_mean 0.047 0.047 0.046 fracstop 1.000 1.000 1.000 cjmean 3.089 3.089 3.089 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 173.6 173.7 174.1 kozaiamp 180.0 180.0 179.9