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: 15VR166 # Created Sat Apr 27 01:17:44 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 44 observations of 44 # Arc: 8.41y # First observation: 2015/08/11 # Last observation: 2024/01/09 # Chi-squared of fit: 4.84 DOF: 82 RMS: 0.06 # Min/Max residuals: -0.16 0.19 # Exact a, adot, b, bdot, g, gdot: 1.761384E-05 3.082452E-02 -2.119266E-06 -3.690509E-03 2.753908E-02 4.048966E-04 # Covariance matrix: 1.6152E-13 -5.9932E-14 -5.3111E-15 8.5462E-15 7.5945E-14 -2.6042E-13 -5.9932E-14 9.9108E-14 8.8637E-15 -1.3352E-14 1.7841E-14 4.1558E-13 -5.3111E-15 8.8637E-15 4.7326E-14 -1.1784E-14 1.2206E-15 4.0452E-14 8.5462E-15 -1.3352E-14 -1.1784E-14 9.5317E-15 -1.3098E-15 -6.1156E-14 7.5945E-14 1.7841E-14 1.2206E-15 -1.3098E-15 8.6384E-14 4.6179E-14 -2.6042E-13 4.1558E-13 4.0452E-14 -6.1156E-14 4.6179E-14 1.9013E-12 # lat0 lon0 xBary yBary zBary JD0 -0.168552 50.204196 1.015465 0.000211 0.029196 2457246.106449 # Heliocentric elements and errors Epoch: 2457246.5000 = 2015/08/12 Mean Anomaly: 355.31306 +/- 0.013 Argument of Peri: 188.08049 +/- 0.018 Long of Asc Node: 227.19899 +/- 0.000 Inclination: 6.83941 +/- 0.000 Eccentricity: 0.16742434 +/- 0.0000 Semi-Major Axis: 43.55061740 +/- 0.0025 Time of Perihelion: 2458613.2121 +/- 9.8 Perihelion: 36.25918392 +/- 0.0027 Aphelion: 50.84205087 +/- 0.0034 Period (y) 287.4085 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 23.99905055 +/- 0.0003 Ecliptic Y 27.22707826 +/- 0.0003 Ecliptic Z -0.10686938 +/- 0.0000 Ecliptic XDOT -0.00233152 +/- 0.0000 Ecliptic YDOT 0.00198518 +/- 0.0000 Ecliptic ZDOT -0.00036696 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.29435793 +/- 0.0003 Geocenter to KBO 36.31204693 +/- 0.0004 # Hcoef: 7.93
The following table shows the complete astrometric record for 15VR166. 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 (15VR166) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.60566 03 11 14.122 +17 37 59.90 23.6w 15VR166 568 C~2lVf 2015 09 06.63576 03 11 12.353 +17 36 48.46 23.5w 15VR166 568 C~2lVf 2015 09 12.52541 03 11 01.890 +17 35 52.31 23.7w 15VR166 568 C~2lVf 2015 10 07.46582 03 09 41.229 +17 29 29.68 23.6w 15VR166 568 C~2lVf 2015 10 08.47003 03 09 36.910 +17 29 09.94 24.0w 15VR166 568 C~2lVf 2015 10 08.52822 03 09 36.650 +17 29 09.02 24.2w 15VR166 568 C~2lVf 2015 11 06.28626 03 07 10.717 +17 18 13.65 23.7r 15VR166 568 C~2lVf 2015 11 06.34963 03 07 10.371 +17 18 12.09 23.2r 15VR166 568 C~2lVf 2015 11 06.42017 03 07 09.963 +17 18 10.32 23.3r 15VR166 568 C~2lVf 2015 11 06.48956 03 07 09.578 +17 18 08.63 23.6r 15VR166 568 C~2lVf 2015 11 07.50772 03 07 03.919 +17 17 43.32 23.6w 15VR166 568 C~2lVf 2015 11 17.27378 03 06 09.553 +17 13 40.57 23.7w 15VR166 568 C~2lVf 2015 11 17.32308 03 06 09.273 +17 13 39.31 24.0w 15VR166 568 C~2lVf 2015 12 06.40182 03 04 28.290 +17 06 05.83 23.6w 15VR166 568 C~2lVf 2015 12 13.33636 03 03 55.589 +17 03 37.15 23.8w 15VR166 568 C~2lVf 2015 12 13.39494 03 03 55.324 +17 03 35.93 23.9w 15VR166 568 C~2lVf 2016 01 01.38920 03 02 43.853 +16 58 04.06 23.6w 15VR166 568 C~2lVf 2016 01 02.35555 03 02 41.059 +16 57 50.63 23.8w 15VR166 568 C~2lVf 2016 01 07.33598 03 02 28.109 +16 56 47.76 23.6w 15VR166 568 C~2lVf 2016 02 03.22261 03 02 04.395 +16 54 22.27 23.8w 15VR166 568 C~2lVf 2016 02 03.22917 03 02 04.411 +16 54 22.23 24.0w 15VR166 568 C~2lVf 2016 02 04.26610 03 02 05.121 +16 54 23.56 23.8w 15VR166 568 C~2lVf 2016 09 06.61138 03 18 39.572 +17 52 25.87 15VR166 568 C~2lVf 2016 09 26.60062 03 17 52.094 +17 48 29.07 23.7w 15VR166 568 C~2lVf 2016 10 10.40808 03 16 58.318 +17 44 25.88 23.7w 15VR166 568 C~2lVf 2016 10 10.46643 03 16 58.051 +17 44 24.75 23.9w 15VR166 568 C~2lVf 2016 10 27.49100 03 15 34.482 +17 38 19.20 23.9w 15VR166 568 C~2lVf 2016 10 27.50259 03 15 34.421 +17 38 18.92 23.9w 15VR166 568 C~2lVf 2016 11 02.59707 03 15 01.446 +17 35 56.44 23.7w 15VR166 568 C~2lVf 2016 11 02.60863 03 15 01.374 +17 35 56.19 23.6w 15VR166 568 C~2lVf 2016 11 03.51606 03 14 56.401 +17 35 34.64 23.5w 15VR166 568 C~2lVf 2016 11 03.52763 03 14 56.338 +17 35 34.36 23.5w 15VR166 568 C~2lVf 2016 12 29.37514 03 10 19.647 +17 15 36.02 15VR166 568 C~2lVf 2017 01 02.38235 03 10 07.019 +17 14 39.41 23.6w 15VR166 568 C~2lVf 2017 01 26.27742 03 09 25.984 +17 11 21.24 24.0w 15VR166 568 C~2lVf 2017 01 26.28489 03 09 25.979 +17 11 21.22 23.9w 15VR166 568 C~2lVf 2017 09 15.58856 03 25 54.432 +18 05 44.62 23.9w 15VR166 568 C~2lVf 2017 09 22.57478 03 25 37.382 +18 04 20.86 23.6w 15VR166 568 C~2lVf 2017 12 16.34929 03 18 44.135 +17 35 16.96 23.4w 15VR166 568 C~2lVf 2017 12 16.36856 03 18 44.030 +17 35 16.61 23.8w 15VR166 568 C~2lVg 2017 12 16.39181 03 18 43.932 +17 35 16.09 23.7w 15VR166 568 C~2lVg 2024 01 09.110100 04 02 46.092 +18 42 31.85 23.5G 15VR166 G37 C~7gt1 2024 01 09.222330 04 02 45.671 +18 42 30.73 15VR166 G37 C~7gt1 2024 01 09.338140 04 02 45.238 +18 42 29.45 15VR166 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 0.02 0.00 0.00
2 0.0713 0.00 -0.07 0.00 -0.05
3 0.0874 0.00 -0.02 0.00 -0.02
4 0.1557 0.00 -0.01 0.00 0.02
5 0.1584 0.00 -0.06 0.00 -0.03
6 0.1586 0.00 -0.09 0.00 0.19
7 0.2373 0.00 -0.03 0.00 0.09
8 0.2375 0.00 0.12 0.00 0.08
9 0.2377 0.00 -0.03 0.00 0.05
10 0.2379 0.00 0.07 0.00 0.08
11 0.2407 0.00 0.00 0.00 -0.02
12 0.2674 0.00 0.03 0.00 0.02
13 0.2675 0.00 -0.01 0.00 -0.03
14 0.3198 0.00 -0.02 0.00 0.08
15 0.3388 0.00 0.03 0.00 0.00
16 0.3389 0.00 0.10 0.00 -0.01
17 0.3909 0.00 -0.05 0.00 0.03
18 0.3936 0.00 -0.06 0.00 -0.03
19 0.4072 0.00 -0.03 0.00 -0.04
20 0.4808 0.00 -0.07 0.00 -0.04
21 0.4808 0.00 0.11 0.00 -0.08
22 0.4837 0.00 -0.05 0.00 -0.01
23 1.0733 0.00 0.05 0.00 -0.09
24 1.1280 0.00 0.05 0.00 -0.05
25 1.1658 0.00 0.13 0.00 0.00
26 1.1659 0.00 0.07 0.00 0.00
27 1.2126 0.00 0.03 0.00 -0.02
28 1.2126 0.00 0.05 0.00 -0.03
29 1.2293 0.00 -0.02 0.00 -0.02
30 1.2293 0.00 -0.14 0.00 0.00
31 1.2318 0.00 0.04 0.00 -0.04
32 1.2318 0.00 0.07 0.00 -0.04
33 1.3847 0.00 0.04 0.00 0.01
34 1.3957 0.00 0.06 0.00 0.03
35 1.4611 0.00 0.03 0.00 0.00
36 1.4611 0.00 0.01 0.00 0.01
37 2.0971 0.00 0.02 0.00 -0.07
38 2.1163 0.00 -0.07 0.00 0.02
39 2.3484 0.00 0.07 0.00 0.02
40 2.3484 0.00 -0.16 0.00 0.04
41 2.3485 0.00 -0.01 0.00 -0.04
42 8.4121 0.00 -0.01 0.00 0.05
43 8.4124 0.00 0.00 0.00 0.05
44 8.4127 0.00 -0.01 0.00 -0.06
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.
15VR166 quality flag:2 Type: SCATNEAR 7:4EEE SCATNEAR axisobj 44.030 44.030 44.030 ecceobj 0.175 0.175 0.176 incobj 6.814 6.814 6.814 qmin 35.525 35.475 35.597 qmax 52.561 52.620 52.536 amean 43.698 43.726 43.726 amin 43.234 43.227 43.225 amax 44.289 44.283 44.295 emean 0.158 0.173 0.171 emin 0.100 0.155 0.141 emax 0.187 0.189 0.186 imean 8.687 8.746 8.751 imin 7.271 7.357 7.590 imax 9.799 9.808 9.699 excite_mean 0.219 0.231 0.229 fracstop 1.000 1.000 1.000 cjmean 3.039 3.034 3.034 libcent 0 -180.0 177.4 -180.0 libamp 0 -180.0 168.3 -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 178.5 180.7 180.5 kozaiamp 180.0 180.0 180.0