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: 15VE171 # Created Tue Apr 1 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 36 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000074 0.019177 -0.000002 0.000531 0.021544 0.000000 # Chi-squared of fit: 5.48 DOF: 64 RMS: 0.07 # Min/Max residuals: -0.18 0.18 # Exact a, adot, b, bdot, g, gdot: 1.421844E-05 1.902666E-02 2.151173E-07 5.265189E-04 2.148975E-02 -7.339607E-04 # Covariance matrix: 1.9991E-13 -2.0742E-15 5.1670E-17 2.6325E-15 1.4593E-13 2.5380E-12 -2.0742E-15 2.5117E-13 -1.2847E-15 7.8033E-15 1.5860E-13 7.3996E-12 5.1670E-17 -1.2847E-15 9.4180E-14 -5.9117E-14 -6.0828E-16 -5.0028E-14 2.6325E-15 7.8033E-15 -5.9117E-14 6.6367E-14 6.9385E-15 3.1257E-13 1.4593E-13 1.5860E-13 -6.0828E-16 6.9385E-15 2.4277E-13 6.6254E-12 2.5380E-12 7.3996E-12 -5.0028E-14 3.1257E-13 6.6254E-12 2.9652E-10 # lat0 lon0 xBary yBary zBary JD0 -0.942123 51.732615 0.931848 -0.006301 -0.392225 2457273.133899 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 225.37252 +/- 0.410 Argument of Peri: 110.69855 +/- 0.405 Long of Asc Node: 81.35758 +/- 0.012 Inclination: 1.82599 +/- 0.001 Eccentricity: 0.09094379 +/- 0.0005 Semi-Major Axis: 43.95710038 +/- 0.0047 Time of Perihelion: 2497078.7613 +/- 121.1 Perihelion: 39.95947529 +/- 0.0244 Aphelion: 47.95472548 +/- 0.0245 Period (y) 291.4417 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.78646608 +/- 0.0007 Ecliptic Y 36.26074526 +/- 0.0008 Ecliptic Z -0.76511072 +/- 0.0000 Ecliptic XDOT -0.00196228 +/- 0.0000 Ecliptic YDOT 0.00142233 +/- 0.0000 Ecliptic ZDOT 0.00006866 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.93251115 +/- 0.0008 Geocenter to KBO 46.53380807 +/- 0.0011 # Hcoef: 8.00
The following table shows the complete astrometric record for 15VE171. 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 (15VE171) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.63311 03 18 16.256 +17 17 17.59 25.2w 15VE171 568 C~2nw8 2015 09 12.49674 03 18 08.982 +17 16 45.53 24.4w 15VE171 568 C~2nw8 2015 10 07.54436 03 17 03.778 +17 12 18.57 25.0w 15VE171 568 C~2nw8 2015 10 07.60373 03 17 03.574 +17 12 17.72 25.1w 15VE171 568 C~2nw8 2015 10 09.58362 03 16 56.691 +17 11 50.20 25.1w 15VE171 568 C~2nw8 2015 11 07.33788 03 14 58.418 +17 04 07.69 24.6r 15VE171 568 C~2nw8 2015 11 07.38006 03 14 58.234 +17 04 07.02 24.8r 15VE171 568 C~2nw8 2015 11 07.42224 03 14 58.050 +17 04 06.18 24.6r 15VE171 568 C~2nw8 2015 11 10.50536 03 14 44.123 +17 03 12.72 25.0w 15VE171 568 C~2nw8 2015 11 17.35218 03 14 13.174 +17 01 13.80 25.0w 15VE171 568 C~2nw8 2015 11 17.39878 03 14 12.957 +17 01 13.01 24.7w 15VE171 568 C~2nw8 2015 12 06.36096 03 12 50.370 +16 56 00.38 24.6w 15VE171 568 C~2nw8 2015 12 06.49848 03 12 49.821 +16 55 58.49 25.0w 15VE171 568 C~2nw8 2016 01 01.34872 03 11 20.663 +16 50 33.61 24.8w 15VE171 568 C~2nw8 2016 01 07.41130 03 11 05.913 +16 49 43.14 24.4w 15VE171 568 C~2nw8 2016 01 07.42868 03 11 05.861 +16 49 42.94 24.1w 15VE171 568 C~2nw8 2016 01 08.25624 03 11 04.092 +16 49 37.01 25.0w 15VE171 568 C~2nw8 2016 02 05.28768 03 10 37.083 +16 48 31.84 25.1w 15VE171 568 C~2nw8 2016 02 10.30807 03 10 39.545 +16 48 49.65 25.0w 15VE171 568 C~2nw8 2016 09 07.62568 03 22 38.378 +17 35 39.54 15VE171 568 C~2nw8 2016 09 26.58416 03 22 00.040 +17 33 02.32 24.8w 15VE171 568 C~2nw8 2016 10 09.54522 03 21 19.322 +17 30 22.85 25.3w 15VE171 568 C~2nw8 2016 10 09.61729 03 21 19.070 +17 30 21.92 25.1w 15VE171 568 C~2nw8 2016 11 02.52573 03 19 42.200 +17 24 11.96 24.7w 15VE171 568 C~2nw8 2016 11 04.40084 03 19 33.857 +17 23 40.49 24.8w 15VE171 568 C~2nw8 2016 12 24.31334 03 16 05.146 +17 10 53.36 24.9w 15VE171 568 C~2nw8 2017 01 02.41556 03 15 38.478 +17 09 21.15 25.2w 15VE171 568 C~2nw8 2017 01 26.32908 03 14 58.685 +17 07 20.45 24.7w 15VE171 568 C~2nw8 2017 09 15.58856 03 26 50.975 +17 52 56.88 25.3w 15VE171 568 C~2nw8 2017 09 17.60038 03 26 47.162 +17 52 41.54 25.2w 15VE171 568 C~2nw8 2017 09 22.57478 03 26 36.377 +17 51 59.01 24.9w 15VE171 568 C~2nw8 2017 09 23.57901 03 26 33.975 +17 51 49.78 25.2w 15VE171 568 C~2nw8 2017 09 24.59522 03 26 31.456 +17 51 39.90 25.0w 15VE171 568 C~2nw8 2017 12 16.34929 03 20 58.947 +17 31 19.81 24.9w 15VE171 568 C~2nw8 2017 12 16.36856 03 20 58.869 +17 31 19.61 24.7w 15VE171 568 C~2nw8 2017 12 16.39181 03 20 58.779 +17 31 19.22 25.3w 15VE171 568 C~2nw8
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 -0.05 0.00 0.04
2 0.0133 -108.93 0.02 -4.09 -0.02
3 0.0819 -1080.31 -0.05 -20.16 0.09
4 0.0821 -1083.35 -0.01 -20.22 0.05
5 0.0875 -1185.75 -0.05 -21.20 -0.04
6 0.1662 -2943.25 -0.07 -25.38 0.09
7 0.1663 -2945.97 0.06 -25.33 0.11
8 0.1664 -2948.74 0.15 -25.45 -0.03
9 0.1749 -3155.53 -0.18 -24.66 0.14
10 0.1936 -3615.16 0.01 -22.79 -0.03
11 0.1937 -3618.37 -0.02 -22.73 -0.01
12 0.2457 -4844.22 0.15 -11.61 -0.06
13 0.2460 -4852.32 ( 0.55) -11.34 ( 0.08)
14 0.3168 -6173.29 -0.03 15.43 0.01
15 0.3334 -6391.04 0.04 23.28 -0.00
16 0.3335 -6391.82 -0.16 23.28 -0.02
17 0.3357 -6417.90 0.08 24.35 -0.04
18 0.4125 -6809.43 -0.04 65.18 -0.11
19 0.4262 -6770.56 0.10 72.90 -0.06
20 1.0020 3908.54 0.05 107.96 -0.01
21 1.0539 3338.19 -0.04 94.49 -0.07
22 1.0894 2734.25 -0.02 88.02 -0.10
23 1.0896 2730.52 0.10 88.03 -0.06
24 1.1551 1295.72 0.07 84.05 -0.03
25 1.1602 1172.22 0.03 84.24 0.01
26 1.2969 -1913.77 -0.02 116.13 0.03
27 1.3218 -2306.83 0.03 126.87 -0.01
28 1.3873 -2889.02 -0.08 159.66 -0.02
29 2.0231 7665.13 -0.03 211.07 -0.00
30 2.0287 7608.52 0.05 209.65 -0.05
31 2.0423 7448.60 0.01 206.51 0.03
32 2.0450 7413.04 0.06 206.05 0.18
33 2.0478 7375.70 -0.13 205.37 0.11
34 2.2744 2466.82 0.03 217.25 -0.05
35 2.2744 2465.69 -0.01 217.34 0.02
36 2.2745 2464.35 -0.04 217.29 -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.
15VE171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.334 44.345 44.323 ecceobj 0.081 0.082 0.080 incobj 1.824 1.824 1.824 qmin 39.368 39.325 39.402 qmax 48.986 49.024 48.913 amean 44.045 44.057 44.033 amin 43.688 43.704 43.691 amax 44.424 44.445 44.404 emean 0.085 0.087 0.084 emin 0.069 0.070 0.068 emax 0.103 0.104 0.102 imean 0.734 0.735 0.732 imin 0.355 0.351 0.357 imax 1.118 1.124 1.107 excite_mean 0.086 0.088 0.085 fracstop 1.000 1.000 1.000 cjmean 3.093 3.093 3.093 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 180.5 181.9 179.8 kozaiamp 180.0 180.0 179.9