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: 15VX171 # Created Tue Apr 1 01:10:42 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 37 observations of 37 # Arc: 9.23y # First observation: 2015/08/11 # Last observation: 2024/11/01 # Chi-squared of fit: 5.05 DOF: 68 RMS: 0.07 # Min/Max residuals: -0.28 0.14 # Exact a, adot, b, bdot, g, gdot: 1.365396E-05 1.816804E-02 -1.470192E-06 -1.813519E-03 2.085604E-02 1.991966E-03 # Covariance matrix: 1.8104E-13 -6.4613E-14 2.4401E-17 6.4329E-15 8.7556E-14 -3.3227E-13 -6.4613E-14 1.4177E-13 1.0267E-14 -1.5969E-14 3.3663E-14 8.6995E-13 2.4401E-17 1.0267E-14 5.2651E-14 -1.0570E-14 6.5682E-15 6.7046E-14 6.4329E-15 -1.5969E-14 -1.0570E-14 8.5605E-15 -4.0731E-15 -1.0285E-13 8.7556E-14 3.3663E-14 6.5682E-15 -4.0731E-15 1.0458E-13 2.3914E-13 -3.3227E-13 8.6995E-13 6.7046E-14 -1.0285E-13 2.3914E-13 5.6070E-12 # lat0 lon0 xBary yBary zBary JD0 -3.162964 50.856471 1.015065 0.002377 0.040757 2457246.102289 # Heliocentric elements and errors Epoch: 2457246.5000 = 2015/08/12 Mean Anomaly: 120.84928 +/- 0.064 Argument of Peri: 78.37460 +/- 0.058 Long of Asc Node: 200.98272 +/- 0.001 Inclination: 6.57677 +/- 0.000 Eccentricity: 0.10460869 +/- 0.0001 Semi-Major Axis: 45.15754370 +/- 0.0031 Time of Perihelion: 2420038.5754 +/- 20.1 Perihelion: 40.43367218 +/- 0.0045 Aphelion: 49.88141522 +/- 0.0049 Period (y) 303.4615 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.97907789 +/- 0.0005 Ecliptic Y 36.45754723 +/- 0.0006 Ecliptic Z -2.64560914 +/- 0.0000 Ecliptic XDOT -0.00169525 +/- 0.0000 Ecliptic YDOT 0.00169152 +/- 0.0000 Ecliptic ZDOT -0.00025208 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.91502732 +/- 0.0005 Geocenter to KBO 47.94769196 +/- 0.0007 # Hcoef: 6.96
The following table shows the complete astrometric record for 15VX171. 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 (15VX171) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.60150 03 17 08.633 +14 54 59.13 24.1w 15VX171 568 C~2nwB 2015 09 06.61481 03 17 05.118 +14 52 30.74 24.1w 15VX171 568 C~2nwB 2015 09 12.50491 03 16 56.760 +14 51 29.07 24.3w 15VX171 568 C~2nwB 2015 10 07.42821 03 15 53.967 +14 45 35.74 24.0w 15VX171 568 C~2nwB 2015 10 08.44001 03 15 50.600 +14 45 18.83 24.0w 15VX171 568 C~2nwB 2015 10 08.49908 03 15 50.404 +14 45 17.91 24.1w 15VX171 568 C~2nwB 2015 11 07.34843 03 13 52.535 +14 36 14.80 23.6r 15VX171 568 C~2nwB 2015 11 07.39058 03 13 52.351 +14 36 14.02 23.6r 15VX171 568 C~2nwB 2015 11 07.43274 03 13 52.163 +14 36 13.28 23.7r 15VX171 568 C~2nwB 2015 11 10.51713 03 13 38.766 +14 35 15.90 23.8w 15VX171 568 C~2nwB 2015 11 10.54648 03 13 38.634 +14 35 15.32 23.8w 15VX171 568 C~2nwB 2015 11 17.36382 03 13 08.942 +14 33 10.48 24.0w 15VX171 568 C~2nwB 2015 11 17.41043 03 13 08.738 +14 33 09.71 23.9w 15VX171 568 C~2nwB 2015 12 06.37266 03 11 49.336 +14 27 52.84 23.8w 15VX171 568 C~2nwB 2015 12 06.52203 03 11 48.722 +14 27 50.32 23.8w 15VX171 568 C~2nwB 2015 12 13.30706 03 11 22.994 +14 26 13.91 24.0w 15VX171 568 C~2nwB 2015 12 13.36559 03 11 22.780 +14 26 13.18 24.0w 15VX171 568 C~2nwB 2016 01 01.36029 03 10 23.457 +14 22 48.81 23.9w 15VX171 568 C~2nwB 2016 01 07.30705 03 10 09.658 +14 22 07.90 24.1w 15VX171 568 C~2nwB 2016 02 04.34036 03 09 42.369 +14 21 42.89 23.9w 15VX171 568 C~2nwB 2016 02 11.22942 03 09 45.864 +14 22 19.67 24.0w 15VX171 568 C~2nwB 2016 09 06.59818 03 21 22.224 +15 02 30.23 15VX171 568 C~2nwB 2016 10 10.39652 03 20 01.587 +14 54 51.64 23.9w 15VX171 568 C~2nwB 2016 10 10.45485 03 20 01.386 +14 54 50.66 23.9w 15VX171 568 C~2nwB 2016 11 02.54312 03 18 30.914 +14 47 58.37 24.0w 15VX171 568 C~2nwB 2016 11 04.41826 03 18 22.897 +14 47 23.94 24.0w 15VX171 568 C~2nwB 2016 12 24.31885 03 15 03.020 +14 34 34.11 24.0w 15VX171 568 C~2nwB 2017 01 02.42106 03 14 37.634 +14 33 14.63 23.9w 15VX171 568 C~2nwB 2017 01 02.42405 03 14 37.621 +14 33 14.51 24.1w 15VX171 568 C~2nwB 2017 01 26.30729 03 14 00.144 +14 31 57.67 24.0w 15VX171 568 C~2nwB 2017 01 26.31474 03 14 00.141 +14 31 57.72 23.9w 15VX171 568 C~2nwB 2017 01 26.33541 03 14 00.137 +14 31 57.76 23.9w 15VX171 568 C~2nwB 2017 09 15.59463 03 25 26.976 +15 10 44.79 24.0w 15VX171 568 C~2nwB 2017 09 22.58081 03 25 12.838 +15 09 18.46 24.1w 15VX171 568 C~2nwB 2024 11 01.383680 03 53 10.429 +15 59 56.15 23.9G 15VX171 G37 C~8SY2 2024 11 01.430690 03 53 10.228 +15 59 55.35 15VX171 G37 C~8SY2 2024 11 01.478760 03 53 10.044 +15 59 54.59 15VX171 G37 C~8SY2
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 0.02 0.00 0.03
2 0.0712 0.00 -0.02 0.00 0.07
3 0.0873 0.00 0.01 0.00 0.01
4 0.1556 0.00 -0.04 0.00 -0.04
5 0.1584 0.00 -0.04 0.00 -0.04
6 0.1585 0.00 0.06 0.00 0.02
7 0.2402 0.00 0.09 0.00 -0.03
8 0.2404 0.00 0.11 0.00 -0.03
9 0.2405 0.00 0.07 0.00 0.02
10 0.2489 0.00 0.10 0.00 0.05
11 0.2490 0.00 0.06 0.00 0.02
12 0.2677 0.00 -0.05 0.00 -0.01
13 0.2678 0.00 -0.02 0.00 0.05
14 0.3197 0.00 -0.02 0.00 0.02
15 0.3201 0.00 -0.28 0.00 -0.23
16 0.3387 0.00 -0.06 0.00 -0.02
17 0.3388 0.00 0.00 0.00 0.03
18 0.3909 0.00 -0.00 0.00 0.01
19 0.4071 0.00 -0.01 0.00 0.01
20 0.4839 0.00 0.09 0.00 0.08
21 0.5027 0.00 0.00 0.00 0.00
22 1.0732 0.00 -0.09 0.00 -0.01
23 1.1658 0.00 0.01 0.00 0.01
24 1.1659 0.00 0.07 0.00 -0.00
25 1.2291 0.00 0.01 0.00 0.01
26 1.2343 0.00 -0.01 0.00 0.05
27 1.3709 0.00 -0.00 0.00 0.06
28 1.3958 0.00 0.14 0.00 0.02
29 1.3958 0.00 0.06 0.00 -0.07
30 1.4612 0.00 -0.09 0.00 -0.05
31 1.4612 0.00 -0.06 0.00 -0.00
32 1.4613 0.00 0.09 0.00 0.02
33 2.0972 0.00 -0.02 0.00 0.01
34 2.1163 0.00 -0.01 0.00 0.02
35 9.2260 0.00 -0.01 0.00 0.05
36 9.2261 0.00 -0.11 0.00 -0.02
37 9.2262 0.00 0.09 0.00 -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.
15VX171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.592 45.592 45.592 ecceobj 0.103 0.103 0.103 incobj 6.541 6.541 6.541 qmin 39.859 39.886 39.884 qmax 50.965 50.972 50.928 amean 45.270 45.270 45.270 amin 44.899 44.898 44.900 amax 45.683 45.669 45.667 emean 0.103 0.103 0.103 emin 0.090 0.090 0.090 emax 0.116 0.117 0.116 imean 7.369 7.369 7.369 imin 6.814 6.814 6.814 imax 7.839 7.837 7.841 excite_mean 0.164 0.164 0.164 fracstop 1.000 1.000 1.000 cjmean 3.084 3.084 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 178.0 178.0 178.1 kozaiamp 180.0 179.9 179.9