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: 15VH170 # Created Tue Apr 1 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.09y # First observation: 2015/08/20 # Last observation: 2017/09/23 Preliminary a, adot, b, bdot, g, gdot: -0.000094 0.023468 -0.000002 0.000072 0.023710 0.000000 # Chi-squared of fit: 8.32 DOF: 64 RMS: 0.09 # Min/Max residuals: -0.20 0.29 # Exact a, adot, b, bdot, g, gdot: 1.503629E-05 2.308668E-02 7.911518E-07 6.973059E-05 2.346279E-02 -4.378784E-04 # Covariance matrix: 2.1166E-13 -7.1532E-14 1.7391E-15 -3.8422E-16 1.2381E-13 1.6177E-12 -7.1532E-14 3.0463E-13 1.8176E-15 -1.2674E-15 1.5150E-13 6.9989E-12 1.7391E-15 1.8176E-15 1.2712E-13 -1.0409E-13 3.2612E-15 7.7199E-14 -3.8422E-16 -1.2674E-15 -1.0409E-13 1.2546E-13 -1.2601E-15 -5.0183E-14 1.2381E-13 1.5150E-13 3.2612E-15 -1.2601E-15 2.4595E-13 6.3417E-12 1.6177E-12 6.9989E-12 7.7199E-14 -5.0183E-14 6.3417E-12 2.7491E-10 # lat0 lon0 xBary yBary zBary JD0 -1.299442 53.097676 1.012041 -0.001497 -0.071879 2457255.076589 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 318.28799 +/- 0.394 Argument of Peri: 323.10078 +/- 0.475 Long of Asc Node: 135.54401 +/- 0.038 Inclination: 1.30452 +/- 0.000 Eccentricity: 0.06429763 +/- 0.0005 Semi-Major Axis: 44.76290752 +/- 0.0042 Time of Perihelion: 2469925.1067 +/- 119.6 Perihelion: 41.88475853 +/- 0.0242 Aphelion: 47.64105651 +/- 0.0243 Period (y) 299.4923 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.43352272 +/- 0.0005 Ecliptic Y 33.52297222 +/- 0.0007 Ecliptic Z -0.96647933 +/- 0.0000 Ecliptic XDOT -0.00218681 +/- 0.0000 Ecliptic YDOT 0.00157053 +/- 0.0000 Ecliptic ZDOT 0.00000935 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.70193055 +/- 0.0007 Geocenter to KBO 42.62067390 +/- 0.0009 # Hcoef: 8.39
The following table shows the complete astrometric record for 15VH170. 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 (15VH170) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.57580 03 24 10.870 +17 17 21.90 25.3w 15VH170 568 C~2nw5 2015 09 07.61675 03 24 04.044 +17 16 23.57 24.8w 15VH170 568 C~2nw5 2015 09 12.48448 03 23 57.091 +17 15 49.33 24.8w 15VH170 568 C~2nw5 2015 10 09.56611 03 22 42.872 +17 10 33.67 25.1w 15VH170 568 C~2nw5 2015 11 06.33360 03 20 41.380 +17 02 37.30 24.8r 15VH170 568 C~2nw5 2015 11 06.39716 03 20 41.088 +17 02 36.21 24.1r 15VH170 568 C~2nw5 2015 11 06.40423 03 20 41.031 +17 02 36.04 24.2r 15VH170 568 C~2nw5 2015 11 06.47375 03 20 40.714 +17 02 34.98 24.6r 15VH170 568 C~2nw5 2015 11 07.49015 03 20 35.769 +17 02 15.99 24.8w 15VH170 568 C~2nw5 2015 11 17.47779 03 19 46.961 +16 59 10.61 24.8w 15VH170 568 C~2nw5 2015 12 06.33759 03 18 17.522 +16 53 38.65 25.0w 15VH170 568 C~2nw5 2015 12 06.47504 03 18 16.921 +16 53 36.49 24.3w 15VH170 568 C~2nw5 2016 01 07.39390 03 16 22.632 +16 46 57.34 25.1w 15VH170 568 C~2nw5 2016 02 04.37827 03 15 49.883 +16 45 43.08 25.0w 15VH170 568 C~2nw5 2016 02 11.24684 03 15 53.369 +16 46 10.32 25.0w 15VH170 568 C~2nw5 2016 09 07.57941 03 29 27.510 +17 36 16.41 15VH170 568 C~2nw5 2016 09 07.59099 03 29 27.494 +17 36 16.33 15VH170 568 C~2nw5 2016 09 27.51468 03 28 47.034 +17 33 18.77 24.7w 15VH170 568 C~2nw5 2016 09 29.49059 03 28 41.249 +17 32 55.02 25.0w 15VH170 568 C~2nw5 2016 10 07.49825 03 28 14.874 +17 31 09.77 24.4w 15VH170 568 C~2nw5 2016 10 07.50982 03 28 14.832 +17 31 09.35 24.9w 15VH170 568 C~2nw5 2016 10 07.59395 03 28 14.521 +17 31 08.29 24.6w 15VH170 568 C~2nw5 2016 10 07.60551 03 28 14.485 +17 31 08.13 24.6w 15VH170 568 C~2nw5 2016 10 09.49835 03 28 07.612 +17 30 40.99 25.6w 15VH170 568 C~2nw5 2016 10 09.51019 03 28 07.570 +17 30 40.90 24.8w 15VH170 568 C~2nw5 2016 10 09.57103 03 28 07.336 +17 30 39.93 25.2w 15VH170 568 C~2nw5 2016 10 09.58259 03 28 07.295 +17 30 39.88 25.6w 15VH170 568 C~2nw5 2016 11 02.49681 03 26 24.303 +17 24 07.03 25.2w 15VH170 568 C~2nw5 2016 11 04.47292 03 26 14.852 +17 23 31.72 24.8w 15VH170 568 C~2nw5 2016 12 28.46047 03 22 13.311 +17 09 11.52 25.0w 15VH170 568 C~2nw5 2016 12 29.39076 03 22 10.308 +17 09 01.52 25.3w 15VH170 568 C~2nw5 2017 01 27.29772 03 21 12.397 +17 06 14.88 24.8w 15VH170 568 C~2nw5 2017 01 27.30287 03 21 12.400 +17 06 14.83 24.9w 15VH170 568 C~2nw5 2017 09 16.62789 03 34 40.518 +17 54 42.15 24.8w 15VH170 568 C~2nw5 2017 09 23.56691 03 34 25.711 +17 53 39.64 25.1w 15VH170 568 C~2nw5
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 0.11 0.00 -0.15
2 0.0494 -109.25 0.01 -32.01 -0.03
3 0.0627 -214.25 -0.07 -40.23 0.01
4 0.1369 -1322.85 -0.08 -78.63 -0.04
5 0.2129 -3128.65 -0.08 -98.40 -0.03
6 0.2131 -3132.98 0.21 -98.38 -0.03
7 0.2131 -3133.82 -0.11 -98.34 0.01
8 0.2133 -3138.48 0.29 -98.21 0.14
9 0.2161 -3211.92 -0.11 -98.52 0.07
10 0.2434 -3936.35 -0.04 -99.16 -0.03
11 0.2950 -5262.60 -0.20 -90.78 0.09
12 0.2954 -5271.49 0.18 -90.65 0.09
13 0.3828 -6961.23 -0.17 -51.84 -0.01
14 0.4594 -7435.27 0.06 -1.16 0.02
15 0.4782 -7379.76 0.05 12.11 -0.02
16 1.0513 4671.71 -0.01 -18.94 -0.03
17 1.0514 4671.47 -0.04 -18.96 -0.04
18 1.1059 4066.81 -0.00 -50.06 -0.01
19 1.1113 3980.74 0.01 -52.87 -0.12
20 1.1333 3589.08 0.02 -62.60 0.12
21 1.1333 3588.40 -0.04 -62.86 -0.13
22 1.1335 3583.82 -0.06 -62.80 0.01
23 1.1336 3583.28 0.03 -62.83 -0.01
24 1.1387 3481.29 -0.00 -65.04 -0.07
25 1.1388 3480.68 0.06 -64.98 -0.01
26 1.1389 3477.20 -0.02 -65.10 -0.07
27 1.1390 3476.62 0.05 -65.01 0.03
28 1.2044 1951.26 -0.09 -82.84 0.06
29 1.2098 1811.43 0.00 -83.57 -0.00
30 1.3577 -1753.56 -0.12 -51.24 0.17
31 1.3602 -1797.73 0.08 -50.04 0.05
32 1.4393 -2643.11 -0.00 -1.00 0.02
33 1.4394 -2643.08 0.08 -1.06 -0.05
34 2.0754 9283.26 -0.01 -19.13 0.04
35 2.0944 9062.68 0.03 -29.81 -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.
15VH170 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.191 45.201 45.181 ecceobj 0.067 0.068 0.067 incobj 1.304 1.304 1.304 qmin 40.989 40.979 40.975 qmax 48.933 48.965 48.889 amean 44.833 44.842 44.823 amin 44.482 44.495 44.460 amax 45.205 45.224 45.191 emean 0.068 0.068 0.067 emin 0.054 0.055 0.053 emax 0.083 0.083 0.082 imean 1.218 1.216 1.219 imin 0.595 0.595 0.596 imax 1.722 1.720 1.724 excite_mean 0.071 0.072 0.071 fracstop 1.000 1.000 1.000 cjmean 3.105 3.106 3.105 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 197.2 197.3 197.1 kozaiamp 180.0 179.9 180.0