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: 15VJ172 # Created Mon Apr 28 01:10:43 2025 # Orbit generated from Bernstein formalism # Fitting 31 observations of 32 # Arc: 2.34y # First observation: 2015/08/11 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000092 0.024394 -0.000001 0.000618 0.024332 0.000000 # Chi-squared of fit: 8.76 DOF: 56 RMS: 0.09 # Min/Max residuals: -0.21 0.37 # Exact a, adot, b, bdot, g, gdot: 1.470806E-05 2.392453E-02 8.347272E-07 6.041877E-04 2.398357E-02 -9.014371E-04 # Covariance matrix: 2.0133E-13 3.9797E-15 -8.7315E-16 3.1974E-15 1.4507E-13 2.5715E-12 3.9797E-15 3.8423E-13 -4.3674E-15 1.5808E-14 2.6284E-13 1.2540E-11 -8.7315E-16 -4.3674E-15 1.0792E-13 -8.2693E-14 -3.7043E-15 -2.0948E-13 3.1974E-15 1.5808E-14 -8.2693E-14 1.1020E-13 1.3442E-14 7.5741E-13 1.4507E-13 2.6284E-13 -3.7043E-15 1.3442E-14 3.1010E-13 1.0697E-11 2.5715E-12 1.2540E-11 -2.0948E-13 7.5741E-13 1.0697E-11 6.0015E-10 # lat0 lon0 xBary yBary zBary JD0 -0.022255 50.533604 1.015271 0.000136 0.035606 2457246.073039 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 312.05220 +/- 0.341 Argument of Peri: 54.50062 +/- 0.451 Long of Asc Node: 50.01741 +/- 0.000 Inclination: 1.45054 +/- 0.001 Eccentricity: 0.08180676 +/- 0.0009 Semi-Major Axis: 43.89991985 +/- 0.0060 Time of Perihelion: 2471390.6237 +/- 100.5 Perihelion: 40.30860950 +/- 0.0382 Aphelion: 47.49123019 +/- 0.0383 Period (y) 290.8733 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.25969521 +/- 0.0006 Ecliptic Y 31.51570089 +/- 0.0007 Ecliptic Z -0.01612753 +/- 0.0000 Ecliptic XDOT -0.00217586 +/- 0.0000 Ecliptic YDOT 0.00165019 +/- 0.0000 Ecliptic ZDOT 0.00006907 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.66930100 +/- 0.0007 Geocenter to KBO 41.69520425 +/- 0.0010 # Hcoef: 8.43
The following table shows the complete astrometric record for 15VJ172. 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 (15VJ172) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.57225 03 12 24.310 +17 51 43.45 24.5w 15VJ172 568 C~2nwD 2015 09 06.61892 03 12 19.538 +17 51 33.73 25.1w 15VJ172 568 C~2nwD 2015 09 12.50905 03 12 09.685 +17 50 56.56 25.0w 15VJ172 568 C~2nwD 2015 10 07.43408 03 10 56.256 +17 46 14.81 24.7w 15VJ172 568 C~2nwD 2015 10 08.44583 03 10 52.333 +17 45 59.50 25.1w 15VJ172 568 C~2nwD 2015 10 08.50488 03 10 52.102 +17 45 58.72 24.9w 15VJ172 568 C~2nwD 2015 11 07.35377 03 08 35.540 +17 37 04.11 24.6r 15VJ172 568 C~2nwD 2015 11 07.39585 03 08 35.323 +17 37 03.26 24.4r 15VJ172 568 C~2nwD 2015 11 07.43803 03 08 35.110 +17 37 02.49 24.6r 15VJ172 568 C~2nwD 2015 11 10.52298 03 08 19.714 +17 36 01.56 24.8w 15VJ172 568 C~2nwD 2015 11 17.36965 03 07 45.434 +17 33 46.05 24.6w 15VJ172 568 C~2nwD 2015 11 17.41626 03 07 45.183 +17 33 45.18 24.7w 15VJ172 568 C~2nwD 2015 12 06.37850 03 06 14.646 +17 27 45.19 24.6w 15VJ172 568 C~2nwD 2015 12 13.31287 03 05 44.908 +17 25 46.58 24.8w 15VJ172 568 C~2nwD 2015 12 13.37141 03 05 44.662 +17 25 45.64 24.7w 15VJ172 568 C~2nwD 2016 01 01.36607 03 04 38.755 +17 21 22.94 24.7w 15VJ172 568 C~2nwD 2016 01 07.31283 03 04 23.855 +17 20 24.03 24.9w 15VJ172 568 C~2nwD 2016 02 04.28927 03 03 58.119 +17 18 48.48 24.8w 15VJ172 568 C~2nwD 2016 02 10.27908 03 04 02.698 +17 19 09.42 25.1w 15VJ172 568 C~2nwD 2016 09 06.61138 03 17 53.620 +18 15 18.28 25.3w 15VJ172 568 C~2nwD 2016 09 26.60062 03 17 08.876 +18 12 35.19 24.9w 15VJ172 568 C~2nwD 2016 10 10.40808 03 16 19.724 +18 09 31.80 24.9w 15VJ172 568 C~2nwD 2016 10 10.46643 03 16 19.491 +18 09 30.98 24.9w 15VJ172 568 C~2nwD 2016 10 27.50259 03 15 03.895 +18 04 45.59 24.8w 15VJ172 568 C~2nwD 2016 11 03.52763 03 14 29.609 +18 02 35.16 24.8w 15VJ172 568 C~2nwD 2016 12 29.37514 03 10 19.789 +17 46 32.49 24.9w 15VJ172 568 C~2nwD 2016 12 29.38063 03 10 19.771 +17 46 32.29 24.9w 15VJ172 568 C~2nwD 2017 01 02.38235 03 10 08.144 +17 45 47.27 24.8w 15VJ172 568 C~2nwD 2017 01 02.38784 03 10 08.144 +17 45 47.31 24.9w 15VJ172 568 C~2nwD 2017 01 26.27742 03 09 28.589 +17 43 17.07 25.0w 15VJ172 568 C~2nwD 2017 12 13.37637 03 16 58.070 +18 14 34.75 24.9w 15VJ172 568 C~2nwD 2017 12 13.41395 03 16 57.914 +18 14 34.04 24.6w 15VJ172 568 C~2nwD
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 0.22 0.00 -0.09
2 0.0713 -68.26 -0.21 8.73 0.37
3 0.0874 -213.76 -0.09 10.30 0.07
4 0.1557 -1299.59 0.06 18.48 0.03
5 0.1584 -1357.68 0.00 18.72 -0.08
6 0.1586 -1361.07 0.10 18.85 0.01
7 0.2403 -3384.77 -0.02 29.07 -0.01
8 0.2404 -3387.99 -0.08 29.09 -0.02
9 0.2406 -3391.13 -0.05 29.18 0.03
10 0.2490 -3619.59 ( 0.45) 30.11 ( -0.15)
11 0.2678 -4128.33 0.11 32.63 -0.01
12 0.2679 -4132.03 -0.08 32.76 0.09
13 0.3198 -5476.95 0.08 39.38 -0.02
14 0.3388 -5919.06 0.04 41.83 -0.05
15 0.3389 -5922.70 0.03 41.89 -0.03
16 0.3909 -6902.92 -0.08 48.57 -0.13
17 0.4072 -7124.49 0.12 50.75 -0.07
18 0.4838 -7505.54 0.00 60.67 -0.02
19 0.5002 -7436.65 -0.18 62.67 -0.08
20 1.0733 4903.87 -0.14 134.62 -0.16
21 1.1281 4245.59 0.10 142.17 0.01
22 1.1659 3521.28 -0.04 147.20 -0.01
23 1.1660 3517.86 0.05 147.27 0.01
24 1.2127 2402.79 0.01 153.47 -0.02
25 1.2319 1896.69 -0.03 156.00 -0.04
26 1.3848 -1796.73 0.00 175.08 0.14
27 1.3848 -1797.03 -0.04 174.95 0.02
28 1.3958 -1969.12 -0.03 176.17 -0.02
29 1.3958 -1969.11 0.21 176.21 0.02
30 1.4612 -2553.87 -0.07 183.51 -0.01
31 2.3403 4127.90 -0.04 297.63 0.09
32 2.3404 4125.57 0.04 297.52 -0.03
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.
15VJ172 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.318 44.328 44.307 ecceobj 0.084 0.085 0.083 incobj 1.445 1.446 1.446 qmin 39.160 39.118 39.196 qmax 49.079 49.120 48.995 amean 43.966 43.976 43.956 amin 43.601 43.611 43.594 amax 44.345 44.366 44.340 emean 0.089 0.090 0.088 emin 0.071 0.072 0.069 emax 0.107 0.107 0.105 imean 1.105 1.106 1.105 imin 0.147 0.143 0.148 imax 1.733 1.735 1.733 excite_mean 0.092 0.093 0.091 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 170.3 170.2 170.3 kozaiamp 179.9 180.0 180.0