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: 15VU166 # Created Thu Apr 25 01:17:40 2024 # Orbit generated from Bernstein formalism # Fitting 31 observations of 31 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000069 0.018594 -0.000002 0.001060 0.021291 0.000000 # Chi-squared of fit: 7.14 DOF: 56 RMS: 0.08 # Min/Max residuals: -0.16 0.23 # Exact a, adot, b, bdot, g, gdot: 1.326193E-05 1.843051E-02 8.125875E-07 1.050035E-03 2.120047E-02 2.447804E-04 # Covariance matrix: 1.9491E-13 8.2575E-15 -9.6981E-16 1.0033E-14 1.7006E-13 5.6342E-12 8.2575E-15 3.5717E-13 -5.6633E-15 3.1192E-14 2.6651E-13 1.7422E-11 -9.6981E-16 -5.6633E-15 1.0797E-13 -8.6003E-14 -4.7045E-15 -4.4325E-13 1.0033E-14 3.1192E-14 -8.6003E-14 1.2285E-13 3.2009E-14 2.3304E-12 1.7006E-13 2.6651E-13 -4.7045E-15 3.2009E-14 3.8311E-13 1.7918E-11 5.6342E-12 1.7422E-11 -4.4325E-13 2.3304E-12 1.7918E-11 1.3009E-09 # lat0 lon0 xBary yBary zBary JD0 -1.494149 53.085394 0.940931 -0.009499 -0.369851 2457273.121609 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 186.31123 +/- 1.134 Argument of Peri: 150.03629 +/- 1.139 Long of Asc Node: 76.56687 +/- 0.007 Inclination: 3.55531 +/- 0.001 Eccentricity: 0.08898789 +/- 0.0002 Semi-Major Axis: 43.67830412 +/- 0.0027 Time of Perihelion: 2508141.0375 +/- 332.2 Perihelion: 39.79146385 +/- 0.0101 Aphelion: 47.56514439 +/- 0.0103 Period (y) 288.6735 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 29.29151050 +/- 0.0008 Ecliptic Y 37.43050012 +/- 0.0011 Ecliptic Z -1.22987284 +/- 0.0000 Ecliptic XDOT -0.00188376 +/- 0.0000 Ecliptic YDOT 0.00145124 +/- 0.0000 Ecliptic ZDOT 0.00013479 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.54521546 +/- 0.0010 Geocenter to KBO 47.16876967 +/- 0.0014 # Hcoef: 7.79
The following table shows the complete astrometric record for 15VU166. 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 (15VU166) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62082 03 24 20.115 +17 05 52.17 24.7w 15VU166 568 C~2lVg 2015 09 12.48448 03 24 13.420 +17 05 21.37 24.7w 15VU166 568 C~2lVg 2015 10 07.52687 03 23 11.145 +17 01 06.39 24.9w 15VU166 568 C~2lVg 2015 10 07.58621 03 23 10.944 +17 01 05.66 25.1w 15VU166 568 C~2lVg 2015 10 09.56611 03 23 04.268 +17 00 39.54 24.4w 15VU166 568 C~2lVg 2015 11 06.33883 03 21 12.690 +16 53 36.83 24.4r 15VU166 568 C~2lVg 2015 11 06.40946 03 21 12.373 +16 53 35.67 24.7r 15VU166 568 C~2lVg 2015 11 06.47899 03 21 12.064 +16 53 34.44 24.5r 15VU166 568 C~2lVg 2015 11 07.49597 03 21 07.547 +16 53 17.78 24.6w 15VU166 568 C~2lVg 2015 11 17.47779 03 20 22.856 +16 50 34.23 24.7w 15VU166 568 C~2lVg 2015 11 17.56554 03 20 22.451 +16 50 32.71 24.2w 15VU166 568 C~2lVg 2015 12 06.34344 03 19 00.758 +16 45 42.19 24.7w 15VU166 568 C~2lVg 2015 12 06.48092 03 19 00.184 +16 45 40.23 24.4w 15VU166 568 C~2lVg 2015 12 31.36453 03 17 32.250 +16 40 47.31 24.7w 15VU166 568 C~2lVg 2016 01 07.39390 03 17 14.225 +16 39 53.47 24.5w 15VU166 568 C~2lVg 2016 02 11.24684 03 16 43.825 +16 39 23.05 24.8w 15VU166 568 C~2lVg 2016 09 07.57941 03 28 32.290 +17 24 56.71 24.9w 15VU166 568 C~2lVg 2016 09 27.51468 03 27 53.663 +17 22 16.81 25.0w 15VU166 568 C~2lVg 2016 09 29.49059 03 27 48.263 +17 21 55.71 24.8w 15VU166 568 C~2lVg 2016 10 05.49370 03 27 30.244 +17 20 45.81 25.0w 15VU166 568 C~2lVg 2016 10 07.49825 03 27 23.732 +17 20 20.95 25.0w 15VU166 568 C~2lVg 2016 10 07.59395 03 27 23.406 +17 20 19.67 25.0w 15VU166 568 C~2lVg 2016 10 09.49835 03 27 17.012 +17 19 55.73 24.7w 15VU166 568 C~2lVg 2016 10 09.57103 03 27 16.756 +17 19 54.57 24.9w 15VU166 568 C~2lVg 2016 11 02.49681 03 25 41.961 +17 14 03.81 24.7w 15VU166 568 C~2lVg 2016 11 04.47292 03 25 33.287 +17 13 32.51 24.6w 15VU166 568 C~2lVg 2016 12 28.46047 03 21 51.844 +17 00 53.95 25.0w 15VU166 568 C~2lVg 2016 12 29.39076 03 21 49.073 +17 00 45.22 24.9w 15VU166 568 C~2lVg 2017 01 27.29772 03 20 54.445 +16 58 25.80 24.8w 15VU166 568 C~2lVg 2017 12 13.38599 03 27 00.511 +17 23 13.36 24.9w 15VU166 568 C~2lVg 2017 12 13.42326 03 27 00.343 +17 23 13.04 25.0w 15VU166 568 C~2lVg
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 0.10 0.00 -0.01
2 0.0133 -100.64 0.08 -5.82 -0.06
3 0.0819 -1029.11 0.01 -28.73 -0.06
4 0.0820 -1032.08 0.02 -28.71 -0.02
5 0.0875 -1131.33 -0.04 -29.91 -0.02
6 0.1635 -2787.29 -0.07 -34.39 0.09
7 0.1637 -2791.99 -0.07 -34.36 0.08
8 0.1639 -2796.59 -0.04 -34.42 -0.03
9 0.1667 -2863.54 -0.13 -34.08 -0.01
10 0.1940 -3525.73 0.03 -29.05 -0.03
11 0.1942 -3531.74 -0.08 -29.04 -0.08
12 0.2456 -4740.60 0.07 -9.98 0.11
13 0.2460 -4749.08 0.11 -9.76 0.12
14 0.3142 -6046.05 -0.06 32.38 -0.06
15 0.3334 -6310.41 0.09 47.32 0.04
16 0.4288 -6740.67 0.01 131.12 -0.02
17 1.0019 3783.61 -0.04 215.54 -0.04
18 1.0565 3208.21 -0.10 196.03 0.01
19 1.0619 3128.07 0.09 194.56 0.08
20 1.0784 2860.77 -0.03 190.21 -0.13
21 1.0839 2764.26 -0.03 189.06 -0.10
22 1.0841 2759.42 -0.08 188.97 -0.16
23 1.0893 2664.77 0.17 188.30 0.23
24 1.0895 2660.94 0.09 188.08 0.03
25 1.1550 1258.51 -0.02 183.93 -0.05
26 1.1604 1130.35 -0.08 184.48 0.04
27 1.3083 -2132.98 -0.15 246.11 0.08
28 1.3108 -2173.65 0.10 247.72 -0.11
29 1.3899 -2967.15 0.04 311.64 0.07
30 2.2663 2484.50 0.12 438.08 -0.11
31 2.2664 2482.09 -0.10 438.36 0.11
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.
15VU166 quality flag:2 Type: 7:4EEE CLASSICAL 7:4EEE axisobj 44.055 44.066 44.046 ecceobj 0.080 0.080 0.080 incobj 3.548 3.548 3.549 qmin 39.353 39.350 39.214 qmax 48.415 48.488 48.513 amean 43.726 43.726 43.727 amin 43.348 43.337 43.342 amax 44.133 44.140 44.135 emean 0.086 0.073 0.087 emin 0.074 0.051 0.074 emax 0.097 0.099 0.100 imean 1.922 1.702 2.003 imin 1.119 0.786 1.156 imax 2.671 2.448 2.859 excite_mean 0.092 0.080 0.094 fracstop 1.000 1.000 1.000 cjmean 3.088 3.091 3.087 libcent 0 177.1 -180.0 177.1 libamp 0 133.7 -180.0 108.5 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 202.0 200.8 183.0 kozaiamp 179.9 180.0 180.0