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: 15VL164 # Created Tue Apr 16 01:17:31 2024 # Orbit generated from Bernstein formalism # Fitting 31 observations of 31 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: 0.000144 0.041905 -0.000046 -0.008547 0.033888 0.000000 # Chi-squared of fit: 11.81 DOF: 56 RMS: 0.11 # Min/Max residuals: -0.31 0.32 # Exact a, adot, b, bdot, g, gdot: 1.900368E-05 4.246091E-02 -4.526432E-06 -8.669324E-03 3.419365E-02 2.228578E-03 # Covariance matrix: 8.8575E-13 -9.9726E-13 -1.1208E-13 1.6951E-13 -4.1200E-13 -5.7050E-12 -9.9726E-13 1.2681E-12 1.5235E-13 -2.3016E-13 5.2031E-13 7.7518E-12 -1.1208E-13 1.5235E-13 2.4877E-13 -1.4598E-13 6.4730E-14 9.9104E-13 1.6951E-13 -2.3016E-13 -1.4598E-13 1.1948E-13 -9.8649E-14 -1.4966E-12 -4.1200E-13 5.2031E-13 6.4730E-14 -9.8649E-14 3.5009E-13 3.3035E-12 -5.7050E-12 7.7518E-12 9.9104E-13 -1.4966E-12 3.3035E-12 5.0418E-11 # lat0 lon0 xBary yBary zBary JD0 -1.229261 45.960392 -0.148672 -0.020827 -0.978000 2456978.916588 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 9.73207 +/- 0.026 Argument of Peri: 169.66007 +/- 0.045 Long of Asc Node: 220.44174 +/- 0.000 Inclination: 11.60073 +/- 0.000 Eccentricity: 0.23840920 +/- 0.0001 Semi-Major Axis: 39.37756750 +/- 0.0027 Time of Perihelion: 2454530.5864 +/- 6.6 Perihelion: 29.98959298 +/- 0.0037 Aphelion: 48.76554203 +/- 0.0046 Period (y) 247.1050 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 20.89535996 +/- 0.0003 Ecliptic Y 21.82636516 +/- 0.0004 Ecliptic Z -0.62755573 +/- 0.0000 Ecliptic XDOT -0.00233459 +/- 0.0000 Ecliptic YDOT 0.00247596 +/- 0.0000 Ecliptic ZDOT -0.00069771 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.22250999 +/- 0.0004 Geocenter to KBO 29.24519236 +/- 0.0005 # Hcoef: 10.21
The following table shows the complete astrometric record for 15VL164. 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 (15VL164) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.41581 02 55 26.885 +15 26 17.19 24.8r 15VL164 568 C~2lVX 2015 08 11.62323 03 11 28.668 +16 13 35.94 25.0w 15VL164 568 C~2lVX 2015 09 07.53281 03 11 30.225 +16 10 04.51 25.1w 15VL164 568 C~2lVX 2015 09 12.52956 03 11 20.349 +16 08 45.21 25.8w 15VL164 568 C~2lVX 2015 10 08.47583 03 09 43.970 +15 59 03.56 25.5w 15VL164 568 C~2lVX 2015 10 08.53403 03 09 43.689 +15 59 01.86 25.2w 15VL164 568 C~2lVX 2015 11 06.29151 03 06 54.876 +15 44 37.60 24.5r 15VL164 568 C~2lVX 2015 11 06.35485 03 06 54.471 +15 44 35.36 24.5r 15VL164 568 C~2lVX 2015 11 06.42547 03 06 54.011 +15 44 33.26 25.4r 15VL164 568 C~2lVX 2015 11 06.49480 03 06 53.562 +15 44 30.97 24.8r 15VL164 568 C~2lVX 2015 11 07.51356 03 06 47.000 +15 43 58.73 24.9w 15VL164 568 C~2lVX 2015 11 17.27960 03 05 43.977 +15 38 51.63 24.8w 15VL164 568 C~2lVX 2015 11 17.32888 03 05 43.648 +15 38 50.20 25.0w 15VL164 568 C~2lVX 2015 12 13.34220 03 03 09.368 +15 26 33.47 25.3w 15VL164 568 C~2lVX 2015 12 13.40075 03 03 09.077 +15 26 32.05 25.3w 15VL164 568 C~2lVX 2016 01 01.39556 03 01 48.007 +15 20 07.61 25.4w 15VL164 568 C~2lVX 2016 01 07.34177 03 01 30.608 +15 18 43.66 25.3w 15VL164 568 C~2lVX 2016 09 26.58845 03 20 40.657 +16 13 13.56 25.8w 15VL164 568 C~2lVX 2016 10 10.39070 03 19 40.083 +16 07 33.91 25.7w 15VL164 568 C~2lVX 2016 10 10.44903 03 19 39.770 +16 07 32.38 25.4w 15VL164 568 C~2lVX 2016 10 27.49679 03 18 03.926 +15 59 26.86 25.6w 15VL164 568 C~2lVX 2016 11 03.52184 03 17 20.010 +15 55 54.95 25.2w 15VL164 568 C~2lVX 2016 12 24.30148 03 12 20.821 +15 33 17.84 25.2w 15VL164 568 C~2lVX 2017 01 02.40371 03 11 45.589 +15 30 45.66 15VL164 568 C~2lVX 2017 01 26.29235 03 11 00.246 +15 27 31.53 25.2w 15VL164 568 C~2lVX 2017 01 26.30729 03 11 00.252 +15 27 31.56 25.3w 15VL164 568 C~2lVX 2017 09 16.63393 03 31 12.882 +16 24 10.41 25.2w 15VL164 568 C~2lVX 2017 09 17.59434 03 31 10.629 +16 23 53.29 25.3w 15VL164 568 C~2lVX 2017 09 23.57295 03 30 54.234 +16 21 59.07 25.6w 15VL164 568 C~2lVX 2017 12 16.35926 03 23 04.784 +15 45 14.43 24.8w 15VL164 568 C~2lVX 2017 12 16.37785 03 23 04.676 +15 45 14.03 25.3w 15VL164 568 C~2lVX
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 0.13 0.00 0.11
2 0.7316 14143.67 -0.13 -1130.29 -0.31
3 0.8052 14108.37 -0.07 -1340.47 0.03
4 0.8189 13949.28 0.09 -1378.69 -0.07
5 0.8900 12448.54 -0.09 -1564.16 0.06
6 0.8901 12444.17 0.10 -1564.70 -0.13
7 0.9689 9857.50 -0.14 -1732.71 0.21
8 0.9690 9851.25 -0.10 -1733.27 -0.07
9 0.9692 9844.27 -0.03 -1733.47 0.04
10 0.9694 9837.39 0.01 -1733.89 -0.07
11 0.9722 9737.22 0.00 -1738.92 -0.06
12 0.9989 8775.79 0.13 -1784.04 -0.08
13 0.9991 8770.82 0.05 -1784.11 0.04
14 1.0703 6421.17 -0.15 -1874.58 0.02
15 1.0705 6416.73 0.10 -1874.77 -0.04
16 1.1225 5182.55 -0.18 -1916.63 0.24
17 1.1387 4917.24 -0.01 -1926.72 0.09
18 1.8595 21868.21 0.01 -3256.78 -0.08
19 1.8973 20927.36 0.21 -3359.04 -0.07
20 1.8974 20922.55 0.01 -3359.35 -0.01
21 1.9441 19448.15 -0.02 -3468.07 0.11
22 1.9633 18775.64 -0.03 -3506.58 0.05
23 2.1024 14221.27 0.05 -3667.98 -0.11
24 2.1273 13687.42 0.32 -3677.68 0.12
25 2.1927 13000.94 -0.15 -3687.93 -0.02
26 2.1927 13001.04 0.05 -3687.93 -0.01
27 2.8315 30994.65 0.14 -4938.40 -0.01
28 2.8342 30958.22 -0.17 -4947.07 0.01
29 2.8505 30695.73 0.03 -4999.95 0.03
30 3.0799 23467.55 -0.02 -5429.08 -0.04
31 3.0800 23465.92 -0.13 -5429.07 -0.01
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.
15VL164 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.735 39.748 39.723 ecceobj 0.245 0.246 0.245 incobj 11.571 11.571 11.571 qmin 27.907 27.894 27.941 qmax 51.705 51.674 51.614 amean 39.455 39.454 39.455 amin 39.034 39.031 39.027 amax 40.001 39.952 39.968 emean 0.244 0.246 0.243 emin 0.186 0.188 0.189 emax 0.293 0.293 0.292 imean 11.837 11.757 11.927 imin 8.781 8.640 8.900 imax 14.785 14.797 14.773 excite_mean 0.322 0.322 0.322 fracstop 1.000 1.000 1.000 cjmean 2.933 2.933 2.933 libcent 0 179.6 180.7 180.3 libamp 0 72.3 67.9 76.8 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 84.9 84.8 85.7 kozaiamp 76.2 76.2 76.2