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: 15VQ171 # Created Tue Apr 1 01:10:41 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: 0.000080 0.022063 0.000016 0.005114 0.023358 0.000000 # Chi-squared of fit: 7.86 DOF: 68 RMS: 0.08 # Min/Max residuals: -0.22 0.29 # Exact a, adot, b, bdot, g, gdot: 1.557897E-05 2.235367E-02 4.520850E-06 5.183963E-03 2.365604E-02 2.585927E-03 # Covariance matrix: 2.4511E-13 -2.6743E-13 2.1028E-14 -4.2367E-14 -1.1650E-13 -2.7440E-12 -2.6743E-13 4.1307E-13 -3.8540E-14 7.7939E-14 1.9495E-13 5.0458E-12 2.1028E-14 -3.8540E-14 1.4318E-13 -8.1640E-14 -2.2794E-14 -5.4422E-13 -4.2367E-14 7.7939E-14 -8.1640E-14 7.1361E-14 4.4296E-14 1.0986E-12 -1.1650E-13 1.9495E-13 -2.2794E-14 4.4296E-14 2.3147E-13 2.8817E-12 -2.7440E-12 5.0458E-12 -5.4422E-13 1.0986E-12 2.8817E-12 7.1137E-11 # lat0 lon0 xBary yBary zBary JD0 -2.542928 48.775390 -0.098725 -0.043532 -0.983571 2456978.818008 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 62.34866 +/- 0.021 Argument of Peri: 273.75931 +/- 0.047 Long of Asc Node: 59.50071 +/- 0.000 Inclination: 13.28616 +/- 0.001 Eccentricity: 0.12010771 +/- 0.0004 Semi-Major Axis: 45.22013616 +/- 0.0048 Time of Perihelion: 2437734.2293 +/- 5.6 Perihelion: 39.78884925 +/- 0.0171 Aphelion: 50.65142308 +/- 0.0175 Period (y) 304.0927 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.40209410 +/- 0.0006 Ecliptic Y 32.57026910 +/- 0.0007 Ecliptic Z -1.87536834 +/- 0.0000 Ecliptic XDOT -0.00173555 +/- 0.0000 Ecliptic YDOT 0.00194488 +/- 0.0000 Ecliptic ZDOT 0.00058620 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.25527003 +/- 0.0006 Geocenter to KBO 42.27249649 +/- 0.0009 # Hcoef: 8.16
The following table shows the complete astrometric record for 15VQ171. 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 (15VQ171) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.31723 03 08 09.979 +14 57 43.45 24.2r 15VQ171 568 C~2nwA 2014 11 17.42609 03 08 09.455 +14 57 41.97 24.4r 15VQ171 568 C~2nwA 2014 11 17.54029 03 08 08.897 +14 57 40.27 24.8r 15VQ171 568 C~2nwA 2014 11 19.33914 03 08 00.236 +14 57 11.05 25.1r 15VQ171 568 C~2nwA 2014 11 23.44182 03 07 40.657 +14 56 06.48 24.4r 15VQ171 568 C~2nwA 2015 08 11.56405 03 17 24.748 +15 51 27.10 24.5w 15VQ171 568 C~2nwA 2015 09 06.61072 03 17 20.743 +15 51 04.47 24.8w 15VQ171 568 C~2nwA 2015 09 12.50083 03 17 11.404 +15 50 28.07 25.1w 15VQ171 568 C~2nwA 2015 10 07.42237 03 16 01.334 +15 46 07.38 24.6w 15VQ171 568 C~2nwA 2015 10 08.43421 03 15 57.581 +15 45 53.80 24.6w 15VQ171 568 C~2nwA 2015 10 08.49327 03 15 57.345 +15 45 53.11 24.8w 15VQ171 568 C~2nwA 2015 11 07.34317 03 13 45.788 +15 38 11.41 24.2r 15VQ171 568 C~2nwA 2015 11 07.38533 03 13 45.580 +15 38 10.82 24.6r 15VQ171 568 C~2nwA 2015 11 07.42748 03 13 45.369 +15 38 10.11 24.5r 15VQ171 568 C~2nwA 2015 11 10.51130 03 13 30.412 +15 37 19.66 24.6w 15VQ171 568 C~2nwA 2015 11 17.35801 03 12 57.132 +15 35 29.00 24.4w 15VQ171 568 C~2nwA 2015 11 17.40462 03 12 56.903 +15 35 28.22 24.7w 15VQ171 568 C~2nwA 2015 12 06.36680 03 11 28.296 +15 30 48.76 24.7w 15VQ171 568 C~2nwA 2015 12 06.51621 03 11 27.633 +15 30 47.09 24.5w 15VQ171 568 C~2nwA 2016 01 01.35451 03 09 52.561 +15 26 35.23 24.7w 15VQ171 568 C~2nwA 2016 01 07.30127 03 09 37.195 +15 26 07.02 24.4w 15VQ171 568 C~2nwA 2016 02 04.33458 03 09 06.809 +15 26 53.34 24.6w 15VQ171 568 C~2nwA 2016 02 11.22361 03 09 10.709 +15 27 51.45 24.8w 15VQ171 568 C~2nwA 2016 09 07.56206 03 22 01.150 +16 27 08.51 15VQ171 568 C~2nwA 2016 09 26.62090 03 21 19.576 +16 24 42.01 24.7w 15VQ171 568 C~2nwA 2016 10 10.49616 03 20 32.201 +16 21 57.68 24.9w 15VQ171 568 C~2nwA 2016 10 10.51394 03 20 32.128 +16 21 57.47 24.7w 15VQ171 568 C~2nwA 2016 11 02.51995 03 18 51.458 +16 16 17.24 24.5w 15VQ171 568 C~2nwA 2016 11 04.39506 03 18 42.504 +16 15 47.63 24.7w 15VQ171 568 C~2nwA 2016 12 24.30148 03 14 59.043 +16 04 32.29 24.8w 15VQ171 568 C~2nwA 2017 01 02.40371 03 14 30.641 +16 03 27.32 24.9w 15VQ171 568 C~2nwA 2017 01 26.29235 03 13 48.664 +16 02 53.38 24.7w 15VQ171 568 C~2nwA 2017 09 17.60038 03 26 27.100 +17 01 50.81 15VQ171 568 C~2nwA 2017 09 23.57901 03 26 12.934 +17 01 04.57 24.8w 15VQ171 568 C~2nwA 2017 09 23.58734 03 26 12.914 +17 01 04.73 25.1w 15VQ171 568 C~2nwA 2017 09 24.59522 03 26 10.241 +17 00 55.83 25.0w 15VQ171 568 C~2nwA 2017 12 16.39181 03 20 13.923 +16 42 24.31 24.8w 15VQ171 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 -0.13 0.00 -0.22
2 0.0003 -7.71 0.09 0.64 0.01
3 0.0006 -15.95 0.15 1.19 0.17
4 0.0055 -144.69 -0.13 7.14 -0.02
5 0.0168 -435.31 -0.00 22.09 0.02
6 0.7317 8595.98 -0.10 972.12 0.05
7 0.8030 8534.18 0.11 965.34 -0.07
8 0.8191 8394.35 0.04 965.39 -0.08
9 0.8874 7348.53 -0.06 978.60 -0.10
10 0.8901 7292.61 0.02 979.72 -0.07
11 0.8903 7289.14 -0.10 979.95 0.07
12 0.9720 5333.05 0.12 1035.84 -0.04
13 0.9721 5330.00 0.13 1036.06 0.05
14 0.9722 5326.87 0.07 1036.19 0.04
15 0.9807 5105.02 0.02 1044.85 0.04
16 0.9994 4611.83 -0.00 1065.90 -0.01
17 0.9996 4608.43 -0.00 1066.03 -0.05
18 1.0515 3299.35 -0.07 1138.36 -0.00
19 1.0519 3289.67 0.06 1139.32 0.29
20 1.1226 1897.92 0.01 1265.80 -0.00
21 1.1389 1676.34 0.03 1298.53 0.04
22 1.2157 1265.81 -0.14 1461.76 0.07
23 1.2345 1335.80 0.01 1502.47 -0.02
24 1.8077 13008.80 -0.04 2014.61 0.03
25 1.8598 12390.73 0.10 2025.92 -0.10
26 1.8978 11687.22 -0.05 2042.02 -0.06
27 1.8979 11686.15 -0.08 2042.09 -0.02
28 1.9609 10193.98 -0.01 2087.34 -0.04
29 1.9660 10061.45 0.01 2092.15 -0.00
30 2.1026 6771.88 -0.06 2281.77 -0.00
31 2.1275 6359.43 -0.07 2327.11 0.03
32 2.1930 5766.38 -0.01 2454.47 -0.06
33 2.8345 17254.98 -0.05 3068.29 -0.03
34 2.8508 17045.24 -0.04 3074.25 -0.08
35 2.8508 17045.00 0.05 3074.48 0.14
36 2.8536 17005.38 -0.02 3075.44 -0.01
37 3.0803 11749.62 0.17 3297.23 0.04
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.
15VQ171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.611 45.626 45.596 ecceobj 0.127 0.128 0.126 incobj 13.256 13.256 13.256 qmin 39.155 39.125 39.147 qmax 51.688 51.711 51.578 amean 45.243 45.257 45.228 amin 44.862 44.891 44.857 amax 45.662 45.668 45.625 emean 0.118 0.119 0.117 emin 0.105 0.107 0.104 emax 0.132 0.133 0.131 imean 11.983 11.984 11.982 imin 11.525 11.526 11.522 imax 12.447 12.447 12.438 excite_mean 0.239 0.239 0.238 fracstop 1.000 1.000 1.000 cjmean 3.047 3.047 3.047 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 178.5 178.7 178.3 kozaiamp 179.9 179.9 180.0