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: 15VR171 # Created Tue Apr 1 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000072 0.020913 -0.000006 -0.001954 0.022481 0.000000 # Chi-squared of fit: 7.11 DOF: 70 RMS: 0.08 # Min/Max residuals: -0.28 0.17 # Exact a, adot, b, bdot, g, gdot: 1.531459E-05 2.113988E-02 -1.588604E-06 -1.975046E-03 2.268818E-02 1.360846E-03 # Covariance matrix: 2.8877E-13 -3.1399E-13 -1.0747E-14 2.0837E-14 -1.4574E-13 -3.4165E-12 -3.1399E-13 4.6875E-13 1.8853E-14 -3.6555E-14 2.5592E-13 5.9936E-12 -1.0747E-14 1.8853E-14 1.5349E-13 -7.6828E-14 1.1560E-14 2.6980E-13 2.0837E-14 -3.6555E-14 -7.6828E-14 5.3046E-14 -2.3702E-14 -5.2482E-13 -1.4574E-13 2.5592E-13 1.1560E-14 -2.3702E-14 2.7446E-13 3.8181E-12 -3.4165E-12 5.9936E-12 2.6980E-13 -5.2482E-13 3.8181E-12 8.5961E-11 # lat0 lon0 xBary yBary zBary JD0 -1.926510 48.929373 -0.097986 -0.032940 -0.984037 2456978.926868 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 83.31864 +/- 0.066 Argument of Peri: 108.83241 +/- 0.046 Long of Asc Node: 209.67252 +/- 0.002 Inclination: 5.66123 +/- 0.001 Eccentricity: 0.06367687 +/- 0.0004 Semi-Major Axis: 45.21025172 +/- 0.0035 Time of Perihelion: 2431272.8455 +/- 20.1 Perihelion: 42.33140446 +/- 0.0199 Aphelion: 48.08909899 +/- 0.0200 Period (y) 303.9930 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.51077904 +/- 0.0007 Ecliptic Y 34.01817297 +/- 0.0008 Ecliptic Z -1.48182023 +/- 0.0000 Ecliptic XDOT -0.00182492 +/- 0.0000 Ecliptic YDOT 0.00178871 +/- 0.0000 Ecliptic ZDOT -0.00024362 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.05904974 +/- 0.0007 Geocenter to KBO 44.07581938 +/- 0.0010 # Hcoef: 8.28
The following table shows the complete astrometric record for 15VR171. 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 (15VR171) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.42609 03 08 05.212 +15 35 49.60 24.7r 15VR171 568 C~2nwA 2014 11 17.54029 03 08 04.675 +15 35 47.35 24.0r 15VR171 568 C~2nwA 2014 11 19.33914 03 07 56.498 +15 35 12.47 25.3r 15VR171 568 C~2nwA 2014 11 23.44182 03 07 37.906 +15 33 54.07 25.1r 15VR171 568 C~2nwA 2015 08 11.56405 03 17 16.006 +16 09 59.09 24.9w 15VR171 568 C~2nwA 2015 10 07.42237 03 15 59.119 +16 01 37.15 24.9w 15VR171 568 C~2nwA 2015 10 08.43421 03 15 55.574 +16 01 20.36 25.1w 15VR171 568 C~2nwA 2015 10 08.49327 03 15 55.356 +16 01 19.40 24.8w 15VR171 568 C~2nwA 2015 11 07.34317 03 13 50.698 +15 52 06.11 24.6r 15VR171 568 C~2nwA 2015 11 07.38533 03 13 50.514 +15 52 05.33 24.9r 15VR171 568 C~2nwA 2015 11 07.42748 03 13 50.317 +15 52 04.52 24.8r 15VR171 568 C~2nwA 2015 11 10.51130 03 13 36.128 +15 51 04.36 25.2w 15VR171 568 C~2nwA 2015 11 17.35801 03 13 04.560 +15 48 52.04 24.9w 15VR171 568 C~2nwA 2015 11 17.40462 03 13 04.341 +15 48 51.13 25.0w 15VR171 568 C~2nwA 2015 12 06.36680 03 11 40.317 +15 43 09.27 24.9w 15VR171 568 C~2nwA 2015 12 13.30120 03 11 12.474 +15 41 19.70 24.7w 15VR171 568 C~2nwA 2015 12 13.35972 03 11 12.247 +15 41 18.76 25.0w 15VR171 568 C~2nwA 2016 01 01.35451 03 10 09.764 +15 37 23.33 25.1w 15VR171 568 C~2nwA 2016 01 07.30127 03 09 55.323 +15 36 32.55 24.6w 15VR171 568 C~2nwA 2016 02 04.33458 03 09 27.619 +15 35 26.34 25.2w 15VR171 568 C~2nwA 2016 02 11.22361 03 09 31.725 +15 35 55.19 25.0w 15VR171 568 C~2nwA 2016 09 07.56206 03 22 05.409 +16 19 50.59 15VR171 568 C~2nwA 2016 09 26.62090 03 21 26.637 +16 16 15.05 25.1w 15VR171 568 C~2nwA 2016 10 10.43747 03 20 42.196 +16 12 44.02 25.2w 15VR171 568 C~2nwA 2016 10 10.49616 03 20 41.979 +16 12 43.04 25.2w 15VR171 568 C~2nwA 2016 10 10.51394 03 20 41.915 +16 12 42.79 25.1w 15VR171 568 C~2nwA 2016 11 02.51995 03 19 06.636 +16 05 46.68 24.9w 15VR171 568 C~2nwA 2016 12 24.30148 03 15 26.387 +15 51 17.98 25.5w 15VR171 568 C~2nwA 2017 01 02.40371 03 14 59.583 +15 49 43.33 25.1w 15VR171 568 C~2nwA 2017 01 26.29235 03 14 20.434 +15 47 48.73 25.0w 15VR171 568 C~2nwA 2017 01 26.34976 03 14 20.405 +15 47 48.59 25.0w 15VR171 568 C~2nwA 2017 09 16.60944 03 26 45.241 +16 29 53.82 25.0w 15VR171 568 C~2nwA 2017 09 16.63393 03 26 45.201 +16 29 53.52 15VR171 568 C~2nwA 2017 09 17.59434 03 26 43.336 +16 29 43.24 15VR171 568 C~2nwA 2017 09 23.54857 03 26 30.181 +16 28 32.97 15VR171 568 C~2nwA 2017 09 23.57295 03 26 30.109 +16 28 32.58 15VR171 568 C~2nwA 2017 12 16.35926 03 20 50.688 +16 05 11.02 24.9w 15VR171 568 C~2nwA 2017 12 16.37785 03 20 50.613 +16 05 10.84 25.5w 15VR171 568 C~2nwA
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 -0.12 0.00 0.04
2 0.0003 -8.08 -0.21 -0.06 0.06
3 0.0052 -131.25 0.17 -1.57 -0.05
4 0.0165 -411.09 0.07 -4.04 -0.05
5 0.7314 8209.66 -0.10 -138.87 0.01
6 0.8871 7007.23 -0.06 -333.66 0.04
7 0.8898 6953.45 0.01 -336.46 -0.04
8 0.8900 6950.16 -0.05 -336.56 -0.01
9 0.9717 5068.37 -0.08 -396.41 0.07
10 0.9718 5065.60 0.10 -396.46 0.06
11 0.9719 5062.64 0.10 -396.49 0.07
12 0.9804 4849.16 0.03 -400.26 0.03
13 0.9991 4374.59 0.06 -406.95 0.01
14 0.9993 4371.30 0.05 -406.98 -0.00
15 1.0512 3110.70 0.08 -413.26 -0.04
16 1.0702 2693.90 -0.05 -411.27 0.01
17 1.0703 2690.49 -0.02 -411.30 -0.06
18 1.1223 1757.83 0.01 -395.87 0.04
19 1.1386 1543.23 0.05 -388.63 -0.03
20 1.2154 1139.92 -0.00 -344.52 0.04
21 1.2342 1204.83 -0.00 -332.74 0.00
22 1.8074 12399.45 0.01 -643.23 -0.05
23 1.8595 11802.66 0.13 -709.06 -0.28
24 1.8974 11127.86 -0.06 -748.98 0.00
25 1.8975 11124.58 -0.05 -749.12 -0.01
26 1.8976 11123.62 -0.01 -749.13 0.03
27 1.9606 9686.34 -0.04 -797.32 -0.05
28 2.1023 6388.47 -0.04 -807.35 0.11
29 2.1272 5990.04 -0.02 -796.83 -0.03
30 2.1927 5414.37 0.00 -758.25 0.03
31 2.1928 5413.93 0.10 -758.28 -0.10
32 2.8314 16467.81 0.04 -1077.25 -0.02
33 2.8315 16467.17 0.15 -1077.40 -0.08
34 2.8341 16438.45 0.08 -1080.67 0.10
35 2.8504 16236.43 0.03 -1101.48 0.01
36 2.8505 16235.32 -0.14 -1101.60 -0.03
37 3.0799 11129.88 -0.09 -1218.90 0.04
38 3.0800 11128.79 -0.11 -1218.80 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.
15VR171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.572 45.584 45.561 ecceobj 0.069 0.070 0.068 incobj 5.637 5.638 5.637 qmin 41.502 41.466 41.521 qmax 49.209 49.176 49.067 amean 45.224 45.234 45.212 amin 44.860 44.875 44.856 amax 45.601 45.614 45.595 emean 0.066 0.066 0.065 emin 0.052 0.053 0.051 emax 0.079 0.079 0.077 imean 6.663 6.664 6.663 imin 6.162 6.162 6.162 imax 7.097 7.099 7.092 excite_mean 0.133 0.134 0.133 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 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 179.1 178.2 178.4 kozaiamp 179.9 180.0 179.9