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: 15VW166 # Created Fri Nov 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000080 0.023121 -0.000001 0.000609 0.023705 0.000000 # Chi-squared of fit: 12.68 DOF: 64 RMS: 0.11 # Min/Max residuals: -0.21 0.22 # Exact a, adot, b, bdot, g, gdot: 1.593457E-05 2.289611E-02 6.919042E-07 6.008538E-04 2.362285E-02 -1.566880E-03 # Covariance matrix: 1.7165E-13 -3.0996E-14 -2.7135E-16 1.4910E-15 1.0939E-13 1.2083E-12 -3.0996E-14 3.0287E-13 -2.5789E-15 1.0009E-14 1.7348E-13 8.0194E-12 -2.7135E-16 -2.5789E-15 1.0203E-13 -7.0897E-14 -1.7863E-15 -9.4516E-14 1.4910E-15 1.0009E-14 -7.0897E-14 8.2791E-14 7.4802E-15 3.6516E-13 1.0939E-13 1.7348E-13 -1.7863E-15 7.4802E-15 2.3408E-13 6.0103E-12 1.2083E-12 8.0194E-12 -9.4516E-14 3.6516E-13 6.0103E-12 2.9252E-10 # lat0 lon0 xBary yBary zBary JD0 -0.236615 51.601494 0.930977 -0.001480 -0.394341 2457273.129809 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 287.96889 +/- 0.027 Argument of Peri: 73.79366 +/- 0.082 Long of Asc Node: 59.21714 +/- 0.004 Inclination: 1.52117 +/- 0.001 Eccentricity: 0.09455778 +/- 0.0007 Semi-Major Axis: 43.64027175 +/- 0.0062 Time of Perihelion: 2478339.6602 +/- 6.5 Perihelion: 39.51374435 +/- 0.0331 Aphelion: 47.76679915 +/- 0.0333 Period (y) 288.2965 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.26372516 +/- 0.0005 Ecliptic Y 32.90621580 +/- 0.0007 Ecliptic Z -0.17478102 +/- 0.0000 Ecliptic XDOT -0.00219415 +/- 0.0000 Ecliptic YDOT 0.00149973 +/- 0.0000 Ecliptic ZDOT 0.00007044 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.73359681 +/- 0.0006 Geocenter to KBO 42.33189833 +/- 0.0009 # Hcoef: 8.97
The following table shows the complete astrometric record for 15VW166. 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 (15VW166) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62902 03 16 58.382 +17 56 08.68 25.3w 15VW166 568 C~2lVg 2015 09 12.49264 03 16 50.602 +17 55 38.87 25.3w 15VW166 568 C~2lVg 2015 10 07.53854 03 15 39.947 +17 51 09.08 25.9w 15VW166 568 C~2lVg 2015 10 07.59790 03 15 39.721 +17 51 08.07 25.1w 15VW166 568 C~2lVg 2015 10 09.57780 03 15 32.237 +17 50 39.46 25.5w 15VW166 568 C~2lVg 2015 11 07.33264 03 13 23.507 +17 42 25.17 24.7r 15VW166 568 C~2lVg 2015 11 07.37479 03 13 23.299 +17 42 24.41 25.3r 15VW166 568 C~2lVg 2015 11 07.41697 03 13 23.093 +17 42 23.49 24.9r 15VW166 568 C~2lVg 2015 11 10.49950 03 13 07.976 +17 41 25.01 25.0w 15VW166 568 C~2lVg 2015 11 17.34635 03 12 34.318 +17 39 15.39 25.5w 15VW166 568 C~2lVg 2015 11 17.39294 03 12 34.080 +17 39 14.48 25.9w 15VW166 568 C~2lVg 2015 12 06.35508 03 11 04.535 +17 33 29.24 25.3w 15VW166 568 C~2lVg 2016 01 01.34294 03 09 28.209 +17 27 19.99 25.7w 15VW166 568 C~2lVg 2016 01 08.25043 03 09 10.701 +17 26 14.05 25.3w 15VW166 568 C~2lVg 2016 02 05.28189 03 08 44.206 +17 24 46.72 25.3w 15VW166 568 C~2lVg 2016 02 10.30227 03 08 47.508 +17 25 03.63 25.5w 15VW166 568 C~2lVg 2016 09 07.57363 03 22 15.570 +18 18 15.89 25.2w 15VW166 568 C~2lVg 2016 09 27.51061 03 21 31.694 +18 15 34.51 25.4w 15VW166 568 C~2lVg 2016 09 29.48481 03 21 25.624 +18 15 11.76 25.6w 15VW166 568 C~2lVg 2016 10 05.48792 03 21 05.396 +18 13 57.31 25.4w 15VW166 568 C~2lVg 2016 10 07.58817 03 20 57.733 +18 13 28.88 24.9w 15VW166 568 C~2lVg 2016 10 09.49252 03 20 50.561 +18 13 02.44 26.3w 15VW166 568 C~2lVg 2016 10 09.56525 03 20 50.279 +18 13 01.21 25.5w 15VW166 568 C~2lVg 2016 11 02.53154 03 19 04.653 +18 06 28.74 25.6w 15VW166 568 C~2lVg 2016 11 02.53733 03 19 04.621 +18 06 28.49 25.0w 15VW166 568 C~2lVg 2016 11 04.40663 03 18 55.569 +18 05 54.97 25.5w 15VW166 568 C~2lVg 2016 11 04.41248 03 18 55.541 +18 05 54.75 25.3w 15VW166 568 C~2lVg 2016 12 24.32550 03 15 08.921 +17 51 47.64 25.6w 15VW166 568 C~2lVg 2017 01 02.42780 03 14 40.304 +17 50 01.57 25.3w 15VW166 568 C~2lVg 2017 01 26.34230 03 13 58.696 +17 47 34.18 26.1w 15VW166 568 C~2lVg 2017 09 15.58856 03 27 23.699 +18 39 13.91 25.6w 15VW166 568 C~2lVg 2017 09 22.57478 03 27 08.176 +18 38 19.19 25.8w 15VW166 568 C~2lVg 2017 12 13.39064 03 21 13.726 +18 17 02.09 26.0w 15VW166 568 C~2lVg 2017 12 13.42791 03 21 13.556 +18 17 01.24 26.1w 15VW166 568 C~2lVg 2017 12 16.34929 03 21 01.361 +18 16 17.00 25.5w 15VW166 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 -0.13 0.00 -0.06
2 0.0133 -114.96 0.10 0.06 -0.13
3 0.0819 -1159.01 -0.06 2.45 0.12
4 0.0821 -1162.39 -0.11 2.32 -0.03
5 0.0875 -1273.02 -0.10 2.64 0.01
6 0.1662 -3177.28 -0.04 9.21 0.20
7 0.1663 -3180.35 -0.02 9.26 0.22
8 0.1664 -3183.43 -0.00 9.15 0.08
9 0.1749 -3407.29 -0.04 9.89 -0.20
10 0.1936 -3905.64 0.05 12.38 -0.04
11 0.1937 -3909.16 -0.03 12.40 -0.06
12 0.2457 -5235.78 0.08 20.58 0.09
13 0.3168 -6663.49 -0.01 34.54 -0.00
14 0.3357 -6922.81 0.03 38.56 -0.17
15 0.4125 -7311.96 0.02 56.84 0.00
16 0.4262 -7261.82 0.16 60.35 0.22
17 1.0019 4711.78 -0.04 124.25 -0.01
18 1.0565 4066.07 -0.07 126.38 0.12
19 1.0619 3976.62 0.09 126.32 -0.20
20 1.0783 3678.89 0.22 127.53 0.08
21 1.0841 3566.04 0.14 127.81 -0.02
22 1.0893 3460.46 0.13 128.25 0.11
23 1.0895 3456.26 0.12 128.08 -0.09
24 1.1551 1900.23 -0.01 133.75 -0.06
25 1.1551 1899.73 -0.10 133.62 -0.18
26 1.1602 1766.38 -0.00 134.40 0.07
27 1.1603 1765.94 -0.02 134.29 -0.04
28 1.2969 -1576.47 -0.01 155.60 0.01
29 1.3218 -1998.61 -0.06 160.45 -0.15
30 1.3873 -2610.73 -0.21 174.60 -0.09
31 2.0232 9276.04 -0.16 249.72 -0.09
32 2.0423 9048.28 0.01 250.97 0.11
33 2.2663 3840.68 0.12 276.10 0.21
34 2.2664 3838.12 -0.07 275.90 -0.02
35 2.2744 3658.83 0.00 277.27 -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.
15VW166 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 44.036 44.049 44.022 ecceobj 0.092 0.093 0.090 incobj 1.517 1.517 1.517 qmin 39.044 38.993 39.108 qmax 48.818 48.829 48.717 amean 43.726 43.727 43.726 amin 43.342 43.345 43.333 amax 44.162 44.148 44.154 emean 0.093 0.094 0.092 emin 0.081 0.082 0.081 emax 0.105 0.106 0.104 imean 0.976 0.985 0.974 imin 0.048 0.077 0.000 imax 1.635 1.694 1.595 excite_mean 0.095 0.096 0.094 fracstop 1.000 1.000 1.000 cjmean 3.087 3.087 3.087 libcent 0 178.5 180.5 179.8 libamp 0 120.7 113.0 138.1 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 158.6 233.3 207.7 kozaiamp 180.0 180.0 180.0