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: 15VT171 # Created Tue Apr 1 01:10:42 2025 # Orbit generated from Bernstein formalism # Fitting 36 observations of 36 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000020 0.023942 -0.000003 -0.000535 0.024192 0.000000 # Chi-squared of fit: 9.51 DOF: 66 RMS: 0.09 # Min/Max residuals: -0.20 0.23 # Exact a, adot, b, bdot, g, gdot: 1.619282E-05 2.413071E-02 -1.400650E-06 -5.390143E-04 2.444962E-02 7.636414E-04 # Covariance matrix: 3.7618E-13 -3.9862E-13 -2.4912E-15 5.9437E-15 -1.8695E-13 -3.8322E-12 -3.9862E-13 5.4950E-13 4.1013E-15 -9.3768E-15 2.7159E-13 6.0806E-12 -2.4912E-15 4.1013E-15 1.7806E-13 -8.7975E-14 1.6199E-15 5.0607E-14 5.9437E-15 -9.3768E-15 -8.7975E-14 5.6712E-14 -5.3939E-15 -1.1565E-13 -1.8695E-13 2.7159E-13 1.6199E-15 -5.3939E-15 2.5704E-13 3.3469E-12 -3.8322E-12 6.0806E-12 5.0607E-14 -1.1565E-13 3.3469E-12 7.5004E-11 # lat0 lon0 xBary yBary zBary JD0 -2.026499 49.044730 -0.096003 -0.034665 -0.984173 2456978.926868 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 40.30445 +/- 0.278 Argument of Peri: 193.15530 +/- 0.319 Long of Asc Node: 172.06745 +/- 0.012 Inclination: 2.35629 +/- 0.000 Eccentricity: 0.04700110 +/- 0.0003 Semi-Major Axis: 43.39624041 +/- 0.0027 Time of Perihelion: 2445280.1608 +/- 80.7 Perihelion: 41.35656958 +/- 0.0118 Aphelion: 45.43591123 +/- 0.0119 Period (y) 285.8817 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.36206331 +/- 0.0005 Ecliptic Y 31.67774591 +/- 0.0007 Ecliptic Z -1.44639307 +/- 0.0000 Ecliptic XDOT -0.00199037 +/- 0.0000 Ecliptic YDOT 0.00182913 +/- 0.0000 Ecliptic ZDOT -0.00006324 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.88381725 +/- 0.0006 Geocenter to KBO 40.90043925 +/- 0.0008 # Hcoef: 8.67
The following table shows the complete astrometric record for 15VT171. 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 (15VT171) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.42609 03 08 39.610 +15 31 55.57 25.1r 15VT171 568 C~2nwA 2014 11 19.33914 03 08 30.282 +15 31 17.48 25.0r 15VT171 568 C~2nwA 2014 11 23.44182 03 08 10.374 +15 29 57.74 24.6r 15VT171 568 C~2nwA 2015 08 11.56405 03 18 40.684 +16 13 14.31 25.1w 15VT171 568 C~2nwA 2015 09 06.61072 03 18 39.903 +16 11 46.47 25.1w 15VT171 568 C~2nwA 2015 09 12.50083 03 18 30.974 +16 10 54.07 25.4w 15VT171 568 C~2nwA 2015 10 07.42237 03 17 21.477 +16 05 19.72 24.3w 15VT171 568 C~2nwA 2015 10 08.43421 03 17 17.697 +16 05 03.03 25.6w 15VT171 568 C~2nwA 2015 11 07.34317 03 15 04.371 +15 55 41.19 24.7r 15VT171 568 C~2nwA 2015 11 07.38533 03 15 04.162 +15 55 40.30 25.1r 15VT171 568 C~2nwA 2015 11 07.42748 03 15 03.948 +15 55 39.59 24.8r 15VT171 568 C~2nwA 2015 11 10.51130 03 14 48.765 +15 54 38.33 24.9w 15VT171 568 C~2nwA 2015 11 17.35801 03 14 14.930 +15 52 23.73 25.1w 15VT171 568 C~2nwA 2015 11 17.40462 03 14 14.693 +15 52 22.71 25.1w 15VT171 568 C~2nwA 2015 12 13.35972 03 12 14.442 +15 44 44.35 24.8w 15VT171 568 C~2nwA 2016 01 01.35451 03 11 07.383 +15 40 50.62 25.0w 15VT171 568 C~2nwA 2016 01 07.30127 03 10 51.902 +15 40 02.06 25.3w 15VT171 568 C~2nwA 2016 02 11.22361 03 10 26.873 +15 39 55.73 24.9w 15VT171 568 C~2nwA 2016 09 07.56206 03 24 07.679 +16 30 36.37 15VT171 568 C~2nwA 2016 09 26.62090 03 23 27.293 +16 27 10.21 25.2w 15VT171 568 C~2nwA 2016 10 10.43747 03 22 40.285 +16 23 40.96 25.0w 15VT171 568 C~2nwA 2016 10 10.49616 03 22 40.041 +16 23 40.07 24.9w 15VT171 568 C~2nwA 2016 10 10.51394 03 22 39.964 +16 23 39.76 25.1w 15VT171 568 C~2nwA 2016 11 02.51995 03 20 58.296 +16 16 41.11 24.7w 15VT171 568 C~2nwA 2016 11 04.39506 03 20 49.208 +16 16 05.08 25.1w 15VT171 568 C~2nwA 2016 12 24.33186 03 17 01.508 +16 02 01.89 24.9w 15VT171 568 C~2nwA 2016 12 24.33677 03 17 01.495 +16 02 01.98 25.0w 15VT171 568 C~2nwA 2017 01 02.43457 03 16 32.646 +16 00 28.67 25.2w 15VT171 568 C~2nwA 2017 01 02.43952 03 16 32.628 +16 00 28.54 25.5w 15VT171 568 C~2nwA 2017 01 26.34976 03 15 50.441 +15 58 45.70 25.0w 15VT171 568 C~2nwA 2017 09 15.58250 03 29 25.978 +16 47 57.53 25.0w 15VT171 568 C~2nwA 2017 09 16.63393 03 29 23.957 +16 47 47.20 25.2w 15VT171 568 C~2nwA 2017 09 21.62755 03 29 13.080 +16 46 53.12 25.5w 15VT171 568 C~2nwA 2017 09 22.56874 03 29 10.808 +16 46 42.50 25.3w 15VT171 568 C~2nwA 2017 12 16.35926 03 23 05.116 +16 23 08.12 25.2w 15VT171 568 C~2nwA 2017 12 16.37785 03 23 05.058 +16 23 07.78 25.4w 15VT171 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 0.22
2 0.0052 -140.09 0.13 -0.17 -0.11
3 0.0165 -438.68 -0.01 1.04 0.00
4 0.7314 9024.64 0.23 93.04 -0.20
5 0.8027 8990.95 0.05 11.04 -0.01
6 0.8188 8852.88 -0.17 -6.25 0.09
7 0.8871 7797.28 0.07 -68.83 -0.11
8 0.8898 7740.25 0.03 -70.74 0.02
9 0.9717 5735.69 -0.06 -109.28 -0.00
10 0.9718 5732.55 -0.06 -109.34 -0.06
11 0.9719 5729.38 -0.08 -109.21 0.07
12 0.9804 5501.80 0.02 -110.61 -0.04
13 0.9991 4995.13 -0.02 -111.60 0.06
14 0.9993 4991.56 -0.10 -111.68 -0.04
15 1.0703 3195.89 0.02 -92.96 0.03
16 1.1223 2200.18 -0.03 -59.47 -0.00
17 1.1386 1971.74 0.09 -46.34 -0.04
18 1.2342 1621.79 0.03 44.58 0.03
19 1.8074 13855.82 -0.07 -104.06 0.03
20 1.8595 13239.01 -0.06 -156.62 0.19
21 1.8974 12528.94 0.16 -187.32 -0.08
22 1.8975 12525.30 0.01 -187.29 0.04
23 1.8976 12524.15 -0.09 -187.30 0.05
24 1.9606 10997.36 0.02 -218.31 -0.13
25 1.9657 10861.25 0.01 -219.57 -0.05
26 2.1024 7467.35 -0.12 -184.80 0.00
27 2.1024 7467.19 -0.01 -184.67 0.13
28 2.1273 7040.81 0.08 -166.02 0.00
29 2.1273 7040.52 0.00 -166.08 -0.07
30 2.1928 6425.86 -0.02 -105.91 0.02
31 2.8286 18574.30 0.12 -237.34 -0.05
32 2.8315 18543.38 0.06 -240.21 0.06
33 2.8452 18377.36 -0.20 -254.19 -0.13
34 2.8478 18342.85 -0.01 -256.45 0.15
35 3.0799 12867.47 -0.09 -310.14 0.05
36 3.0800 12866.58 0.17 -310.26 -0.10
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.
15VT171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.738 43.748 43.729 ecceobj 0.055 0.056 0.055 incobj 2.349 2.349 2.349 qmin 40.158 40.143 40.154 qmax 46.790 46.868 46.816 amean 43.396 43.405 43.387 amin 43.049 43.065 43.050 amax 43.755 43.761 43.737 emean 0.055 0.055 0.054 emin 0.036 0.037 0.035 emax 0.070 0.071 0.071 imean 3.172 3.169 3.175 imin 2.188 2.188 2.188 imax 3.918 3.915 3.926 excite_mean 0.078 0.078 0.078 fracstop 1.000 1.000 1.000 cjmean 3.087 3.087 3.087 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 181.9 181.6 181.5 kozaiamp 180.0 179.9 180.0