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: 15VO171 # Created Tue Apr 1 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 39 observations of 39 # Arc: 2.84y # First observation: 2014/11/23 # Last observation: 2017/09/24 Preliminary a, adot, b, bdot, g, gdot: 0.000069 0.023614 0.000001 0.000904 0.024022 0.000000 # Chi-squared of fit: 9.76 DOF: 72 RMS: 0.09 # Min/Max residuals: -0.27 0.38 # Exact a, adot, b, bdot, g, gdot: 1.572959E-05 2.383244E-02 9.722538E-07 9.134824E-04 2.419855E-02 7.756902E-04 # Covariance matrix: 7.5110E-13 -7.9366E-13 1.7992E-14 -2.4379E-14 -3.6906E-13 -7.5363E-12 -7.9366E-13 9.3817E-13 -2.2633E-14 3.0851E-14 4.4637E-13 9.5256E-12 1.7992E-14 -2.2633E-14 2.0804E-13 -1.0864E-13 -1.2502E-14 -2.4913E-13 -2.4379E-14 3.0851E-14 -1.0864E-13 6.9796E-14 1.6118E-14 3.3836E-13 -3.6906E-13 4.4637E-13 -1.2502E-14 1.6118E-14 3.3647E-13 5.0332E-12 -7.5363E-12 9.5256E-12 -2.4913E-13 3.3836E-13 5.0332E-12 1.0455E-10 # lat0 lon0 xBary yBary zBary JD0 -1.872980 48.556519 -0.206668 -0.031413 -0.965623 2456984.891808 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 38.19265 +/- 0.291 Argument of Peri: 277.97088 +/- 0.340 Long of Asc Node: 88.56836 +/- 0.008 Inclination: 2.86217 +/- 0.000 Eccentricity: 0.05427399 +/- 0.0003 Semi-Major Axis: 44.11844019 +/- 0.0030 Time of Perihelion: 2445625.0085 +/- 86.6 Perihelion: 41.72395623 +/- 0.0140 Aphelion: 46.51292416 +/- 0.0141 Period (y) 293.0478 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.81885212 +/- 0.0006 Ecliptic Y 31.82337783 +/- 0.0008 Ecliptic Z -1.35064309 +/- 0.0000 Ecliptic XDOT -0.00196520 +/- 0.0000 Ecliptic YDOT 0.00184800 +/- 0.0000 Ecliptic ZDOT 0.00010053 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.28995326 +/- 0.0007 Geocenter to KBO 41.32478695 +/- 0.0010 # Hcoef: 7.71
The following table shows the complete astrometric record for 15VO171. 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 (15VO171) followed by the observatory code and reference code for the source of the astrometry.
2014 11 23.39103 03 06 32.245 +15 32 49.72 24.3r 15VO171 568 C~2nw9 2015 08 11.56405 03 16 54.082 +16 19 14.31 24.4w 15VO171 568 C~2nw9 2015 09 06.61072 03 16 51.781 +16 18 10.89 23.9w 15VO171 568 C~2nw9 2015 09 12.50083 03 16 42.633 +16 17 23.97 24.3w 15VO171 568 C~2nw9 2015 10 07.42237 03 15 32.551 +16 12 13.21 24.6w 15VO171 568 C~2nw9 2015 10 08.43421 03 15 28.769 +16 11 57.36 24.3w 15VO171 568 C~2nw9 2015 10 08.49327 03 15 28.535 +16 11 56.48 23.5w 15VO171 568 C~2nw9 2015 11 07.34317 03 13 15.792 +16 03 02.06 24.1r 15VO171 568 C~2nw9 2015 11 07.38533 03 13 15.581 +16 03 01.27 24.2r 15VO171 568 C~2nw9 2015 11 07.42748 03 13 15.375 +16 03 00.48 24.2r 15VO171 568 C~2nw9 2015 11 10.51130 03 13 00.264 +16 02 01.89 24.0w 15VO171 568 C~2nw9 2015 11 17.35801 03 12 26.654 +15 59 52.80 24.1w 15VO171 568 C~2nw9 2015 11 17.40462 03 12 26.423 +15 59 51.93 24.1w 15VO171 568 C~2nwA 2015 12 06.36680 03 10 57.059 +15 54 19.40 24.2w 15VO171 568 C~2nwA 2015 12 06.51621 03 10 56.375 +15 54 17.15 24.5w 15VO171 568 C~2nwA 2015 12 13.30120 03 10 27.511 +15 52 33.78 24.4w 15VO171 568 C~2nwA 2015 12 13.35972 03 10 27.270 +15 52 32.99 24.4w 15VO171 568 C~2nwA 2016 01 01.35451 03 09 21.100 +15 48 51.88 24.5w 15VO171 568 C~2nwA 2016 02 04.33458 03 08 37.327 +15 47 39.10 23.3w 15VO171 568 C~2nwA 2016 02 11.22361 03 08 41.933 +15 48 20.07 24.3w 15VO171 568 C~2nwA 2016 09 07.56206 03 22 10.331 +16 41 43.57 24.5w 15VO171 568 C~2nwA 2016 09 26.62090 03 21 29.242 +16 38 37.15 24.5w 15VO171 568 C~2nwA 2016 10 10.43747 03 20 42.004 +16 35 21.64 24.4w 15VO171 568 C~2nwA 2016 10 10.49616 03 20 41.770 +16 35 20.66 24.2w 15VO171 568 C~2nwA 2016 10 10.51394 03 20 41.699 +16 35 20.45 24.3w 15VO171 568 C~2nwA 2016 11 02.51995 03 19 00.180 +16 28 42.97 24.4w 15VO171 568 C~2nwA 2016 11 04.39506 03 18 51.135 +16 28 08.49 24.2w 15VO171 568 C~2nwA 2016 12 24.30148 03 15 05.563 +16 14 40.98 15VO171 568 C~2nwA 2016 12 24.33186 03 15 05.458 +16 14 40.61 23.1w 15VO171 568 C~2nwA 2017 01 02.40371 03 14 37.106 +16 13 12.32 24.4w 15VO171 568 C~2nwA 2017 01 02.43457 03 14 37.015 +16 13 12.17 24.1w 15VO171 568 C~2nwA 2017 01 26.29235 03 13 55.867 +16 11 40.47 24.1w 15VO171 568 C~2nwA 2017 01 26.32220 03 13 55.850 +16 11 40.46 24.1w 15VO171 568 C~2nwA 2017 09 15.58250 03 27 19.295 +17 03 55.26 15VO171 568 C~2nwA 2017 09 17.60038 03 27 15.265 +17 03 37.25 24.2w 15VO171 568 C~2nwA 2017 09 22.56874 03 27 03.866 +17 02 47.93 24.2w 15VO171 568 C~2nwA 2017 09 23.57901 03 27 01.292 +17 02 37.13 23.9w 15VO171 568 C~2nwA 2017 09 23.58734 03 27 01.280 +17 02 36.77 24.1w 15VO171 568 C~2nwA 2017 09 24.59522 03 26 58.631 +17 02 25.75 24.1w 15VO171 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 -0.03 0.00 -0.08
2 0.7151 9393.52 0.18 285.50 0.00
3 0.7864 9344.87 -0.11 232.88 0.05
4 0.8025 9205.19 -0.02 222.01 -0.06
5 0.8707 8147.90 0.02 186.74 -0.05
6 0.8735 8091.08 0.02 185.77 -0.03
7 0.8737 8087.59 -0.06 185.81 0.04
8 0.9554 6099.19 0.11 175.90 -0.05
9 0.9555 6096.04 0.08 175.95 -0.04
10 0.9556 6092.97 0.13 175.98 -0.05
11 0.9641 5867.20 0.02 177.38 -0.01
12 0.9828 5365.37 -0.04 181.94 0.00
13 0.9829 5361.93 -0.02 181.99 -0.00
14 1.0348 4030.40 -0.13 206.20 -0.01
15 1.0353 4020.29 -0.27 206.68 0.19
16 1.0538 3591.26 -0.08 218.93 -0.10
17 1.0540 3587.70 -0.02 219.10 -0.06
18 1.1060 2608.38 -0.04 263.45 -0.05
19 1.1990 1980.39 0.38 364.29 0.14
20 1.2179 2055.49 -0.01 385.72 0.07
21 1.7910 14151.52 -0.00 415.24 0.01
22 1.8432 13530.26 -0.08 385.70 0.22
23 1.8810 12820.97 0.03 370.68 0.02
24 1.8812 12817.45 -0.02 370.60 -0.04
25 1.8812 12816.41 -0.01 370.66 0.03
26 1.9442 11298.28 -0.02 362.87 -0.03
27 1.9494 11163.29 0.00 363.24 -0.02
28 2.0860 7811.29 0.04 431.77 0.11
29 2.0861 7809.74 0.07 431.81 0.07
30 2.1109 7392.01 -0.06 454.32 -0.10
31 2.1110 7390.71 -0.08 454.53 0.02
32 2.1763 6794.16 -0.03 522.80 0.05
33 2.1764 6793.92 0.01 522.86 0.01
34 2.8123 18808.47 -0.06 588.08 -0.01
35 2.8178 18747.52 -0.02 584.99 -0.03
36 2.8314 18575.52 0.02 577.85 -0.00
37 2.8342 18536.77 -0.01 576.58 0.09
38 2.8342 18536.51 0.07 576.27 -0.21
39 2.8370 18496.66 0.06 575.05 -0.09
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.
15VO171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.478 44.488 44.468 ecceobj 0.063 0.063 0.062 incobj 2.862 2.862 2.862 qmin 40.707 40.687 40.694 qmax 47.796 47.803 47.763 amean 44.124 44.134 44.114 amin 43.778 43.789 43.777 amax 44.498 44.492 44.475 emean 0.059 0.059 0.058 emin 0.043 0.043 0.042 emax 0.074 0.075 0.074 imean 1.216 1.215 1.217 imin 0.455 0.458 0.454 imax 1.809 1.808 1.811 excite_mean 0.063 0.064 0.063 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.098 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 165.4 165.1 165.6 kozaiamp 180.0 180.0 180.0