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: 15VZ171 # Created Tue Apr 1 01:10:42 2025 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000015 0.018568 -0.000002 0.000331 0.021267 0.000000 # Chi-squared of fit: 6.49 DOF: 52 RMS: 0.08 # Min/Max residuals: -0.18 0.24 # Exact a, adot, b, bdot, g, gdot: 1.347236E-05 1.863436E-02 1.284288E-07 3.329088E-04 2.136577E-02 -6.873278E-04 # Covariance matrix: 3.9454E-13 -4.1064E-13 4.2324E-15 -6.0030E-15 -2.2487E-13 -5.1487E-12 -4.1064E-13 5.9275E-13 -7.1659E-15 1.0507E-14 3.6229E-13 8.9179E-12 4.2324E-15 -7.1659E-15 2.1604E-13 -1.0636E-13 -5.5152E-15 -1.2075E-13 -6.0030E-15 1.0507E-14 -1.0636E-13 6.8646E-14 6.4960E-15 1.8024E-13 -2.2487E-13 3.6229E-13 -5.5152E-15 6.4960E-15 3.6432E-13 5.9336E-12 -5.1487E-12 8.9179E-12 -1.2075E-13 1.8024E-13 5.9336E-12 1.5214E-10 # lat0 lon0 xBary yBary zBary JD0 -2.687295 49.264469 -0.092226 -0.046029 -0.984069 2456978.926868 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 207.92288 +/- 0.372 Argument of Peri: 87.54657 +/- 0.370 Long of Asc Node: 118.07433 +/- 0.015 Inclination: 2.82475 +/- 0.000 Eccentricity: 0.08606039 +/- 0.0003 Semi-Major Axis: 44.35084752 +/- 0.0037 Time of Perihelion: 2502544.0328 +/- 111.2 Perihelion: 40.53399644 +/- 0.0119 Aphelion: 48.16769861 +/- 0.0121 Period (y) 295.3664 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.07897115 +/- 0.0008 Ecliptic Y 36.23380759 +/- 0.0010 Ecliptic Z -2.19441563 +/- 0.0001 Ecliptic XDOT -0.00186972 +/- 0.0000 Ecliptic YDOT 0.00148811 +/- 0.0000 Ecliptic ZDOT 0.00004684 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.78709784 +/- 0.0009 Geocenter to KBO 46.80382965 +/- 0.0013 # Hcoef: 7.99
The following table shows the complete astrometric record for 15VZ171. 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 (15VZ171) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.42609 03 10 16.524 +14 57 17.94 24.5r 15VZ171 568 C~2nwB 2014 11 17.54029 03 10 16.004 +14 57 15.90 24.3r 15VZ171 568 C~2nwB 2014 11 19.33914 03 10 08.168 +14 56 45.46 24.7r 15VZ171 568 C~2nwB 2015 09 06.61481 03 18 30.850 +15 32 54.05 24.8w 15VZ171 568 C~2nwB 2015 09 12.50491 03 18 22.493 +15 32 04.08 25.3w 15VZ171 568 C~2nwB 2015 10 07.42821 03 17 19.291 +15 26 57.70 24.7w 15VZ171 568 C~2nwB 2015 11 07.34843 03 15 16.622 +15 18 24.73 24.7r 15VZ171 568 C~2nwB 2015 11 07.39058 03 15 16.435 +15 18 24.02 24.7r 15VZ171 568 C~2nwB 2015 11 07.43274 03 15 16.251 +15 18 23.26 25.1r 15VZ171 568 C~2nwB 2015 11 10.51713 03 15 02.676 +15 17 29.93 24.9w 15VZ171 568 C~2nwB 2015 11 10.54648 03 15 02.546 +15 17 29.39 25.1w 15VZ171 568 C~2nwB 2016 01 01.36029 03 11 44.012 +15 05 46.83 24.7w 15VZ171 568 C~2nwB 2016 01 07.30705 03 11 29.828 +15 05 08.61 24.8w 15VZ171 568 C~2nwB 2016 02 11.22942 03 11 04.050 +15 05 30.87 25.1w 15VZ171 568 C~2nwB 2016 09 07.56785 03 22 41.766 +15 50 03.17 15VZ171 568 C~2nwB 2016 09 27.50655 03 22 01.767 +15 46 38.08 25.4w 15VZ171 568 C~2nwB 2016 10 10.44325 03 21 21.421 +15 43 38.29 25.1w 15VZ171 568 C~2nwB 2016 11 02.51417 03 19 49.899 +15 37 23.08 25.0w 15VZ171 568 C~2nwB 2016 11 04.38927 03 19 41.772 +15 36 51.22 24.8w 15VZ171 568 C~2nwB 2016 12 24.31885 03 16 18.184 +15 24 44.92 24.9w 15VZ171 568 C~2nwB 2016 12 24.33677 03 16 18.126 +15 24 44.67 24.9w 15VZ171 568 C~2nwB 2017 01 02.42106 03 15 52.129 +15 23 29.13 24.7w 15VZ171 568 C~2nwB 2017 01 02.43952 03 15 52.086 +15 23 28.68 25.0w 15VZ171 568 C~2nwB 2017 01 26.33541 03 15 13.122 +15 22 16.97 25.3w 15VZ171 568 C~2nwB 2017 01 26.34976 03 15 13.126 +15 22 17.03 25.6w 15VZ171 568 C~2nwB 2017 09 15.57624 03 26 44.103 +16 06 02.96 25.2w 15VZ171 568 C~2nwB 2017 09 23.57295 03 26 27.464 +16 04 40.42 15VZ171 568 C~2nwB 2017 12 16.35462 03 21 00.933 +15 43 52.17 24.7w 15VZ171 568 C~2nwB 2017 12 16.35926 03 21 00.919 +15 43 52.05 24.9w 15VZ171 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 0.07 0.00 0.02
2 0.0003 -7.81 -0.13 0.06 0.00
3 0.0052 -125.37 0.06 1.26 0.09
4 0.8027 7467.10 -0.18 170.66 0.08
5 0.8188 7337.33 0.10 153.75 -0.05
6 0.8871 6374.42 -0.07 95.70 0.02
7 0.9717 4526.54 0.07 65.55 -0.11
8 0.9718 4523.74 0.09 65.58 -0.09
9 0.9720 4520.97 0.13 65.54 -0.14
10 0.9804 4317.35 -0.00 65.81 -0.01
11 0.9805 4315.40 0.01 65.79 -0.04
12 1.1223 1357.47 -0.15 150.76 0.02
13 1.1386 1149.30 -0.01 168.83 0.04
14 1.2342 795.52 -0.04 290.17 -0.00
15 1.8074 11241.21 -0.05 233.43 0.03
16 1.8620 10628.97 -0.06 182.35 0.04
17 1.8974 10018.36 -0.02 157.59 0.11
18 1.9605 8641.74 0.02 134.91 0.03
19 1.9657 8519.88 0.03 134.44 0.07
20 2.1024 5486.14 0.03 198.60 0.09
21 2.1024 5485.26 0.01 198.58 0.01
22 2.1273 5102.41 0.06 224.29 0.24
23 2.1273 5101.69 0.04 224.02 -0.09
24 2.1928 4538.83 -0.09 302.98 -0.18
25 2.1928 4538.90 0.12 303.03 -0.18
26 2.8286 14879.74 0.11 280.10 0.03
27 2.8505 14625.61 -0.01 260.14 0.03
28 3.0799 9735.36 -0.09 246.98 0.02
29 3.0799 9735.14 -0.06 246.92 -0.06
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.
15VZ171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.645 44.655 44.635 ecceobj 0.078 0.078 0.078 incobj 2.826 2.826 2.826 qmin 39.909 39.935 39.947 qmax 49.005 49.074 49.014 amean 44.354 44.364 44.345 amin 43.994 44.006 43.995 amax 44.731 44.743 44.715 emean 0.081 0.081 0.081 emin 0.066 0.066 0.065 emax 0.096 0.097 0.097 imean 1.494 1.492 1.495 imin 0.724 0.724 0.723 imax 2.190 2.187 2.192 excite_mean 0.086 0.086 0.085 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 196.7 196.9 196.3 kozaiamp 179.9 180.0 180.0