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: 15VJ170 # Created Tue Apr 1 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 34 observations of 34 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000089 0.020978 -0.000003 0.001620 0.022681 0.000000 # Chi-squared of fit: 5.65 DOF: 62 RMS: 0.07 # Min/Max residuals: -0.18 0.16 # Exact a, adot, b, bdot, g, gdot: 1.473517E-05 2.080929E-02 1.008319E-06 1.608618E-03 2.262657E-02 1.318477E-04 # Covariance matrix: 1.8963E-13 -4.6495E-14 3.2914E-16 4.2610E-15 1.2545E-13 1.5184E-12 -4.6495E-14 2.9054E-13 -4.2709E-15 2.2024E-14 1.4341E-13 7.4895E-12 3.2914E-16 -4.2709E-15 1.0146E-13 -7.5979E-14 -1.9631E-15 -1.6063E-13 4.2610E-15 2.2024E-14 -7.5979E-14 9.9444E-14 1.7503E-14 8.5649E-13 1.2545E-13 1.4341E-13 -1.9631E-15 1.7503E-14 2.3500E-13 6.0382E-12 1.5184E-12 7.4895E-12 -1.6063E-13 8.5649E-13 6.0382E-12 2.9158E-10 # lat0 lon0 xBary yBary zBary JD0 -1.867743 52.512004 0.937182 -0.012216 -0.379174 2457273.121609 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 203.52200 +/- 0.930 Argument of Peri: 135.46976 +/- 0.930 Long of Asc Node: 74.16792 +/- 0.004 Inclination: 4.75724 +/- 0.001 Eccentricity: 0.04431532 +/- 0.0003 Semi-Major Axis: 42.82932349 +/- 0.0028 Time of Perihelion: 2501770.6047 +/- 264.4 Perihelion: 40.93132838 +/- 0.0139 Aphelion: 44.72731859 +/- 0.0140 Period (y) 280.2980 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.85351212 +/- 0.0006 Ecliptic Y 34.78034205 +/- 0.0007 Ecliptic Z -1.44039954 +/- 0.0000 Ecliptic XDOT -0.00198625 +/- 0.0000 Ecliptic YDOT 0.00154368 +/- 0.0000 Ecliptic ZDOT 0.00019408 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.58211616 +/- 0.0007 Geocenter to KBO 44.19583563 +/- 0.0009 # Hcoef: 8.02
The following table shows the complete astrometric record for 15VJ170. 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 (15VJ170) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62082 03 22 24.546 +16 35 31.91 24.9w 15VJ170 568 C~2nw5 2015 09 12.48448 03 22 17.422 +16 34 57.83 24.8w 15VJ170 568 C~2nw5 2015 10 07.52687 03 21 11.251 +16 30 20.42 24.6w 15VJ170 568 C~2nw5 2015 10 07.58621 03 21 11.041 +16 30 19.69 24.6w 15VJ170 568 C~2nw5 2015 10 09.56611 03 21 03.958 +16 29 51.53 24.8w 15VJ170 568 C~2nw5 2015 11 06.33883 03 19 05.787 +16 22 20.02 24.2r 15VJ170 568 C~2nw5 2015 11 06.40946 03 19 05.455 +16 22 19.12 24.2r 15VJ170 568 C~2nw5 2015 11 06.47899 03 19 05.119 +16 22 17.71 24.3r 15VJ170 568 C~2nw5 2015 11 07.49597 03 19 00.348 +16 22 00.09 24.3w 15VJ170 568 C~2nw5 2015 11 17.47779 03 18 13.147 +16 19 07.72 24.6w 15VJ170 568 C~2nw5 2015 11 17.56554 03 18 12.722 +16 19 06.11 24.7w 15VJ170 568 C~2nw5 2015 12 06.34344 03 16 46.722 +16 14 03.75 24.8w 15VJ170 568 C~2nw5 2015 12 06.48092 03 16 46.110 +16 14 01.74 24.4w 15VJ170 568 C~2nw5 2015 12 31.36453 03 15 14.282 +16 09 07.38 24.6w 15VJ170 568 C~2nw5 2016 01 07.39390 03 14 55.678 +16 08 16.31 24.7w 15VJ170 568 C~2nw5 2016 02 05.29346 03 14 23.508 +16 07 49.28 24.7w 15VJ170 568 C~2nw5 2016 02 11.24684 03 14 26.436 +16 08 21.87 24.8w 15VJ170 568 C~2nw5 2016 09 07.57941 03 27 06.939 +16 58 39.20 24.8w 15VJ170 568 C~2nw5 2016 09 27.51468 03 26 26.038 +16 55 45.63 24.8w 15VJ170 568 C~2nw5 2016 09 29.49059 03 26 20.292 +16 55 22.73 25.0w 15VJ170 568 C~2nw5 2016 10 05.49370 03 26 01.197 +16 54 07.89 24.8w 15VJ170 568 C~2nw5 2016 10 07.49825 03 25 54.310 +16 53 41.33 24.8w 15VJ170 568 C~2nw5 2016 10 07.59395 03 25 53.970 +16 53 39.96 24.9w 15VJ170 568 C~2nw5 2016 10 09.49835 03 25 47.178 +16 53 13.74 24.9w 15VJ170 568 C~2nw5 2016 10 09.57103 03 25 46.912 +16 53 12.76 24.8w 15VJ170 568 C~2nw5 2016 11 02.48525 03 24 06.602 +16 46 59.78 24.8w 15VJ170 568 C~2nw5 2016 11 04.46126 03 23 57.431 +16 46 26.55 24.6w 15VJ170 568 C~2nw5 2016 12 28.46047 03 20 04.312 +16 33 22.75 25.0w 15VJ170 568 C~2nw5 2016 12 29.39076 03 20 01.402 +16 33 14.22 24.9w 15VJ170 568 C~2nw5 2017 01 27.30287 03 19 05.441 +16 31 12.10 24.7w 15VJ170 568 C~2nw5 2017 09 15.58250 03 31 39.839 +17 20 35.85 15VJ170 568 C~2nw5 2017 09 21.62755 03 31 27.494 +17 19 45.40 24.9w 15VJ170 568 C~2nw5 2017 09 22.56874 03 31 25.305 +17 19 36.67 24.8w 15VJ170 568 C~2nw5 2017 12 13.43255 03 25 46.035 +16 59 48.93 15VJ170 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 -0.04 0.00 0.02
2 0.0133 -107.70 0.06 -7.10 -0.02
3 0.0819 -1098.43 -0.03 -34.34 -0.04
4 0.0820 -1101.53 0.04 -34.28 0.05
5 0.0875 -1207.22 -0.02 -35.62 0.04
6 0.1635 -2966.48 -0.01 -37.95 -0.16
7 0.1637 -2971.33 0.12 -37.60 0.13
8 0.1639 -2976.37 -0.00 -37.72 -0.05
9 0.1667 -3047.27 -0.04 -37.13 -0.03
10 0.1940 -3748.34 0.05 -29.00 -0.09
11 0.1942 -3754.67 -0.03 -28.98 -0.16
12 0.2456 -5029.62 0.04 -1.00 -0.10
13 0.2460 -5038.66 -0.04 -0.65 -0.04
14 0.3142 -6393.51 -0.07 59.38 0.11
15 0.3334 -6665.87 0.08 80.14 0.16
16 0.4125 -7120.83 -0.08 175.47 0.15
17 0.4288 -7071.52 -0.02 195.87 0.01
18 1.0019 4273.99 0.01 330.56 -0.01
19 1.0565 3662.21 0.05 307.48 0.01
20 1.0619 3576.63 -0.12 305.72 0.01
21 1.0784 3292.51 -0.18 301.18 0.06
22 1.0839 3190.14 0.03 299.99 0.15
23 1.0841 3185.07 0.06 299.88 0.07
24 1.0893 3084.11 -0.05 298.70 -0.00
25 1.0895 3080.16 0.01 298.70 0.02
26 1.1550 1592.29 0.08 296.85 -0.01
27 1.1604 1456.45 0.03 297.69 -0.07
28 1.3083 -1982.86 0.05 387.20 -0.01
29 1.3108 -2025.49 -0.00 389.64 -0.08
30 1.3900 -2834.75 0.03 477.64 -0.09
31 2.0232 8392.34 -0.04 653.24 -0.01
32 2.0397 8208.32 0.08 646.92 -0.06
33 2.0423 8175.75 0.02 646.01 -0.05
34 2.2664 3166.45 -0.05 685.61 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.
15VJ170 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.213 43.222 43.204 ecceobj 0.034 0.034 0.035 incobj 4.747 4.747 4.747 qmin 40.445 40.425 40.352 qmax 45.564 45.596 45.666 amean 42.917 42.925 42.908 amin 42.585 42.591 42.575 amax 43.259 43.261 43.252 emean 0.035 0.034 0.035 emin 0.017 0.016 0.016 emax 0.054 0.054 0.056 imean 2.775 2.779 2.771 imin 1.884 1.891 1.877 imax 3.773 3.770 3.775 excite_mean 0.060 0.059 0.060 fracstop 1.000 1.000 1.000 cjmean 3.085 3.085 3.084 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 182.3 182.2 182.7 kozaiamp 180.0 180.0 179.9