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: 15VL165 # Created Fri Nov 22 02:10:32 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 38 observations of 38 # Arc: 9.14y # First observation: 2014/11/17 # Last observation: 2024/01/09 # Chi-squared of fit: 4.08 DOF: 70 RMS: 0.06 # Min/Max residuals: -0.30 0.14 # Exact a, adot, b, bdot, g, gdot: 1.717174E-05 3.346016E-02 -6.945771E-06 -1.393462E-02 3.094945E-02 -1.124152E-03 # Covariance matrix: 1.6518E-13 -1.2229E-13 -4.4979E-14 4.8078E-14 -2.2348E-14 -3.5098E-13 -1.2229E-13 1.2561E-13 4.9552E-14 -5.2806E-14 1.0384E-14 3.8640E-13 -4.4979E-14 4.9552E-14 8.4485E-14 -3.5541E-14 -1.4055E-15 1.6356E-13 4.8078E-14 -5.2806E-14 -3.5541E-14 3.0792E-14 1.2772E-16 -1.7382E-13 -2.2348E-14 1.0384E-14 -1.4055E-15 1.2772E-16 1.2167E-13 -8.6773E-15 -3.5098E-13 3.8640E-13 1.6356E-13 -1.7382E-13 -8.6773E-15 1.2746E-12 # lat0 lon0 xBary yBary zBary JD0 -2.012370 48.192505 -0.107936 -0.034393 -0.982969 2456978.772168 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 350.96859 +/- 0.010 Argument of Peri: 197.69667 +/- 0.014 Long of Asc Node: 223.70302 +/- 0.000 Inclination: 22.68161 +/- 0.000 Eccentricity: 0.16072883 +/- 0.0000 Semi-Major Axis: 39.53607485 +/- 0.0024 Time of Perihelion: 2459256.4373 +/- 8.5 Perihelion: 33.18148777 +/- 0.0026 Aphelion: 45.89066193 +/- 0.0032 Period (y) 248.5985 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.09818208 +/- 0.0002 Ecliptic Y 24.87576519 +/- 0.0003 Ecliptic Z -1.13483774 +/- 0.0000 Ecliptic XDOT -0.00230570 +/- 0.0000 Ecliptic YDOT 0.00186188 +/- 0.0000 Ecliptic ZDOT -0.00122833 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.29297834 +/- 0.0003 Geocenter to KBO 32.31080554 +/- 0.0004 # Hcoef: 7.63
The following table shows the complete astrometric record for 15VL165. 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 (15VL165) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.27139 03 05 14.649 +15 18 48.14 22.6r 15VL165 568 C~2lVa 2014 11 17.38009 03 05 13.995 +15 18 44.69 22.7r 15VL165 568 C~2lVa 2014 11 17.49387 03 05 13.310 +15 18 40.98 22.9r 15VL165 568 C~2lVa 2014 11 19.28114 03 05 02.766 +15 17 43.67 22.8r 15VL165 568 C~2lVa 2014 11 23.38468 03 04 38.740 +15 15 33.89 22.9r 15VL165 568 C~2lVa 2015 08 11.60150 03 18 59.553 +15 42 16.53 23.3w 15VL165 568 C~2lVa 2015 09 06.61481 03 19 05.104 +15 37 07.69 23.0w 15VL165 568 C~2lVa 2015 09 12.50491 03 18 55.380 +15 35 16.34 23.1w 15VL165 568 C~2lVb 2015 10 07.42821 03 17 33.980 +15 25 04.37 23.1w 15VL165 568 C~2lVb 2015 10 08.44001 03 17 29.469 +15 24 35.52 23.1w 15VL165 568 C~2lVb 2015 10 08.49908 03 17 29.197 +15 24 33.81 23.0w 15VL165 568 C~2lVb 2015 11 07.34843 03 14 48.511 +15 09 06.81 22.8r 15VL165 568 C~2lVb 2015 11 07.39058 03 14 48.256 +15 09 05.48 22.9r 15VL165 568 C~2lVb 2015 11 07.43274 03 14 47.999 +15 09 04.12 22.6r 15VL165 568 C~2lVb 2015 11 10.51713 03 14 29.573 +15 07 25.35 22.9w 15VL165 568 C~2lVb 2015 11 10.54648 03 14 29.396 +15 07 24.39 22.9w 15VL165 568 C~2lVb 2015 11 17.41043 03 13 48.266 +15 03 46.67 22.9w 15VL165 568 C~2lVb 2015 12 06.37266 03 11 59.281 +14 54 25.07 22.9w 15VL165 568 C~2lVb 2015 12 06.52203 03 11 58.456 +14 54 21.06 23.1w 15VL165 568 C~2lVb 2015 12 13.30706 03 11 23.398 +14 51 23.25 23.1w 15VL165 568 C~2lVb 2015 12 13.36559 03 11 23.107 +14 51 21.79 23.0w 15VL165 568 C~2lVb 2016 01 01.36029 03 10 03.686 +14 44 38.96 23.1w 15VL165 568 C~2lVb 2016 01 07.30705 03 09 45.819 +14 43 06.15 23.1w 15VL165 568 C~2lVb 2016 02 04.34036 03 09 16.499 +14 39 52.83 23.1w 15VL165 568 C~2lVb 2016 02 11.22942 03 09 24.044 +14 40 07.92 23.2w 15VL165 568 C~2lVb 2016 09 25.60907 03 26 45.469 +15 13 14.01 23.1w 15VL165 568 C~2lVb 2016 10 10.54805 03 25 46.577 +15 06 28.18 23.1w 15VL165 568 C~2lVb 2016 10 10.59680 03 25 46.347 +15 06 26.82 23.0w 15VL165 568 C~2lVb 2016 11 02.50837 03 23 44.929 +14 54 46.17 15VL165 568 C~2lVb 2016 11 04.48449 03 23 33.341 +14 53 44.05 22.9w 15VL165 568 C~2lVb 2016 12 25.28594 03 18 53.955 +14 30 49.03 15VL165 568 C~2lVb 2016 12 28.43907 03 18 41.375 +14 29 51.06 15VL165 568 C~2lVb 2017 01 27.29257 03 17 34.427 +14 24 39.69 23.2w 15VL165 568 C~2lVb 2017 09 15.55206 03 35 37.682 +14 59 17.21 23.1w 15VL165 568 C~2lVb 2017 09 20.60085 03 35 26.456 +14 57 22.78 23.1w 15VL165 568 C~2lVb 2024 01 09.154250 04 16 40.695 +12 06 31.73 22.9G 15VL165 G37 C~7gt1 2024 01 09.268460 04 16 40.209 +12 06 31.00 15VL165 G37 C~7gt1 2024 01 09.382520 04 16 39.730 +12 06 29.86 15VL165 G37 C~7gt1
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 -0.01 0.00 -0.04
2 0.0003 0.00 0.01 0.00 -0.01
3 0.0006 0.00 0.03 0.00 -0.05
4 0.0055 0.00 0.03 0.00 -0.04
5 0.0167 0.00 -0.08 0.00 -0.02
6 0.7319 0.00 0.06 0.00 0.02
7 0.8031 0.00 -0.02 0.00 0.07
8 0.8193 0.00 0.01 0.00 0.00
9 0.8875 0.00 -0.02 0.00 -0.00
10 0.8903 0.00 -0.01 0.00 0.00
11 0.8904 0.00 -0.01 0.00 -0.03
12 0.9721 0.00 0.01 0.00 -0.09
13 0.9723 0.00 0.01 0.00 -0.08
14 0.9724 0.00 -0.01 0.00 -0.09
15 0.9808 0.00 0.02 0.00 0.03
16 0.9809 0.00 0.04 0.00 0.02
17 0.9997 0.00 0.03 0.00 0.00
18 1.0516 0.00 -0.03 0.00 0.01
19 1.0520 0.00 -0.16 0.00 0.11
20 1.0706 0.00 -0.05 0.00 -0.01
21 1.0708 0.00 0.03 0.00 -0.00
22 1.1228 0.00 0.03 0.00 -0.00
23 1.1390 0.00 0.03 0.00 -0.02
24 1.2158 0.00 0.03 0.00 0.04
25 1.2347 0.00 0.05 0.00 0.04
26 1.8572 0.00 0.00 0.00 0.05
27 1.8981 0.00 0.05 0.00 -0.00
28 1.8982 0.00 0.02 0.00 0.06
29 1.9610 0.00 0.04 0.00 0.03
30 1.9664 0.00 0.04 0.00 0.02
31 2.1054 0.00 -0.05 0.00 -0.01
32 2.1141 0.00 0.05 0.00 0.04
33 2.1958 0.00 0.04 0.00 0.01
34 2.8290 0.00 0.00 0.00 0.03
35 2.8428 0.00 -0.05 0.00 0.01
36 9.1441 0.00 -0.04 0.00 0.14
37 9.1444 0.00 -0.02 0.00 0.11
38 9.1447 0.00 0.03 0.00 -0.30
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.
15VL165 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.826 39.826 39.826 ecceobj 0.165 0.165 0.165 incobj 22.618 22.618 22.618 qmin 32.634 32.635 32.633 qmax 46.687 46.687 46.686 amean 39.456 39.456 39.456 amin 39.082 39.082 39.084 amax 39.861 39.867 39.858 emean 0.133 0.133 0.133 emin 0.097 0.097 0.097 emax 0.173 0.173 0.173 imean 23.967 23.966 23.967 imin 23.292 23.292 23.293 imax 24.663 24.665 24.661 excite_mean 0.428 0.428 0.428 fracstop 1.000 1.000 1.000 cjmean 2.836 2.836 2.836 libcent 0 180.4 180.7 179.9 libamp 0 74.7 75.0 74.2 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 179.5 179.7 179.6 kozaiamp 180.0 180.0 180.0