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: 15VU164 # Created Fri Nov 22 02:10:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 33 observations of 33 # Arc: 8.39y # First observation: 2015/08/20 # Last observation: 2024/01/09 # Chi-squared of fit: 5.46 DOF: 60 RMS: 0.07 # Min/Max residuals: -0.17 0.19 # Exact a, adot, b, bdot, g, gdot: 1.223764E-05 2.021258E-02 -9.750303E-06 -1.558521E-02 2.560213E-02 4.111895E-03 # Covariance matrix: 1.6572E-13 -3.1651E-14 -1.7566E-14 3.0893E-14 8.9597E-14 -2.3078E-13 -3.1651E-14 7.3071E-14 3.8477E-14 -6.5331E-14 2.6097E-14 5.0076E-13 -1.7566E-14 3.8477E-14 8.4437E-14 -5.1732E-14 9.6164E-15 3.0278E-13 3.0893E-14 -6.5331E-14 -5.1732E-14 7.5670E-14 -1.5275E-14 -5.1496E-13 8.9597E-14 2.6097E-14 9.6164E-15 -1.5275E-14 1.0678E-13 1.2302E-13 -2.3078E-13 5.0076E-13 3.0278E-13 -5.1496E-13 1.2302E-13 3.9423E-12 # lat0 lon0 xBary yBary zBary JD0 -0.044037 53.345389 1.012355 0.000081 -0.067376 2457255.068249 # Heliocentric elements and errors Epoch: 2457254.5000 = 2015/08/20 Mean Anomaly: 78.45181 +/- 0.020 Argument of Peri: 85.89293 +/- 0.020 Long of Asc Node: 231.80967 +/- 0.000 Inclination: 37.52926 +/- 0.000 Eccentricity: 0.13700074 +/- 0.0001 Semi-Major Axis: 39.48742802 +/- 0.0026 Time of Perihelion: 2437503.5878 +/- 5.4 Perihelion: 34.07762100 +/- 0.0037 Aphelion: 44.89723503 +/- 0.0042 Period (y) 248.1398 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.16642440 +/- 0.0003 Ecliptic Y 30.78467836 +/- 0.0004 Ecliptic Z -0.03037933 +/- 0.0000 Ecliptic XDOT -0.00147431 +/- 0.0000 Ecliptic YDOT 0.00163576 +/- 0.0000 Ecliptic ZDOT -0.00166694 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.13702554 +/- 0.0004 Geocenter to KBO 39.05917052 +/- 0.0005 # Hcoef: 7.57
The following table shows the complete astrometric record for 15VU164. 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 (15VU164) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.56746 03 23 52.091 +18 34 00.68 23.7w 15VU164 568 C~2lVY 2015 09 07.61267 03 23 43.810 +18 30 43.79 23.8w 15VU164 568 C~2lVY 2015 09 12.46374 03 23 35.995 +18 29 29.78 23.4w 15VU164 568 C~2lVY 2015 10 07.51519 03 22 21.530 +18 20 59.21 23.7w 15VU164 568 C~2lVY 2015 10 07.57457 03 22 21.290 +18 20 57.76 23.7w 15VU164 568 C~2lVY 2015 10 09.55447 03 22 13.264 +18 20 09.22 23.7w 15VU164 568 C~2lVY 2015 11 06.32832 03 19 58.684 +18 07 23.78 23.6r 15VU164 568 C~2lVY 2015 11 06.39169 03 19 58.342 +18 07 21.90 23.6r 15VU164 568 C~2lVY 2015 11 06.46246 03 19 57.959 +18 07 19.83 23.5r 15VU164 568 C~2lVY 2015 11 07.48432 03 19 52.490 +18 06 49.79 23.7w 15VU164 568 C~2lVY 2015 11 17.46555 03 18 58.612 +18 01 53.01 23.6w 15VU164 568 C~2lVY 2015 11 17.55383 03 18 58.116 +18 01 50.10 23.6w 15VU164 568 C~2lVY 2015 12 31.35875 03 15 34.870 +17 42 15.13 23.7w 15VU164 568 C~2lVY 2016 01 07.38812 03 15 13.847 +17 39 52.43 23.9w 15VU164 568 C~2lVY 2016 01 07.42286 03 15 13.743 +17 39 51.72 24.0w 15VU164 568 C~2lVY 2016 01 08.24465 03 15 11.595 +17 39 36.25 23.8w 15VU164 568 C~2lVY 2016 02 04.37827 03 14 38.189 +17 33 35.86 23.5w 15VU164 568 C~2lVY 2016 02 11.24103 03 14 42.074 +17 32 53.72 23.9w 15VU164 568 C~2lVY 2016 09 07.59099 03 29 22.960 +17 55 39.35 23.8w 15VU164 568 C~2lVY 2016 10 09.58259 03 27 54.166 +17 44 46.11 15VU164 568 C~2lVY 2016 11 02.49681 03 26 01.021 +17 33 57.06 15VU164 568 C~2lVY 2016 11 04.47292 03 25 50.645 +17 33 00.17 15VU164 568 C~2lVY 2016 12 28.46047 03 21 26.465 +17 08 55.22 23.7w 15VU164 568 C~2lVY 2016 12 29.39076 03 21 23.175 +17 08 35.62 23.7w 15VU164 568 C~2lVY 2017 01 27.29772 03 20 20.031 +17 01 08.08 23.7w 15VU164 568 C~2lVY 2017 01 27.30287 03 20 20.025 +17 01 07.97 23.8w 15VU164 568 C~2lVY 2017 09 16.62789 03 34 43.936 +17 17 53.11 23.6w 15VU164 568 C~2lVY 2017 09 23.56691 03 34 27.604 +17 15 35.57 23.8w 15VU164 568 C~2lVY 2017 12 13.39528 03 28 10.531 +16 40 05.54 23.7w 15VU164 568 C~2lVY 2017 12 13.43255 03 28 10.347 +16 40 04.69 23.7w 15VU164 568 C~2lVY 2024 01 09.085630 03 58 58.762 +12 59 11.78 23.7G 15VU164 G37 C~7gt1 2024 01 09.198740 03 58 58.350 +12 59 10.63 15VU164 G37 C~7gt1 2024 01 09.314030 03 58 57.960 +12 59 09.77 15VU164 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 0.05 0.00 0.04
2 0.0494 0.00 -0.04 0.00 0.09
3 0.0627 0.00 -0.03 0.00 0.08
4 0.1313 0.00 -0.02 0.00 0.05
5 0.1314 0.00 0.01 0.00 0.04
6 0.1369 0.00 0.07 0.00 0.00
7 0.2129 0.00 0.01 0.00 -0.10
8 0.2131 0.00 0.03 0.00 -0.13
9 0.2133 0.00 0.05 0.00 -0.12
10 0.2161 0.00 0.02 0.00 0.02
11 0.2434 0.00 0.02 0.00 0.09
12 0.2436 0.00 -0.17 0.00 -0.17
13 0.3636 0.00 -0.01 0.00 -0.02
14 0.3828 0.00 0.13 0.00 0.07
15 0.3829 0.00 -0.00 0.00 0.03
16 0.3852 0.00 0.02 0.00 0.05
17 0.4594 0.00 -0.03 0.00 0.09
18 0.4782 0.00 0.02 0.00 -0.02
19 1.0514 0.00 0.01 0.00 0.04
20 1.1390 0.00 0.08 0.00 -0.01
21 1.2045 0.00 0.04 0.00 -0.00
22 1.2099 0.00 0.01 0.00 0.01
23 1.3577 0.00 -0.04 0.00 0.08
24 1.3602 0.00 0.00 0.00 -0.02
25 1.4394 0.00 -0.02 0.00 0.03
26 1.4394 0.00 -0.05 0.00 -0.03
27 2.0755 0.00 -0.03 0.00 -0.01
28 2.0945 0.00 -0.08 0.00 0.00
29 2.3158 0.00 0.08 0.00 -0.12
30 2.3159 0.00 -0.02 0.00 -0.05
31 8.3875 0.00 0.19 0.00 -0.06
32 8.3878 0.00 -0.14 0.00 -0.10
33 8.3881 0.00 -0.05 0.00 0.19
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.
15VU164 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.820 39.820 39.820 ecceobj 0.142 0.142 0.142 incobj 37.400 37.400 37.400 qmin 30.936 30.939 30.934 qmax 48.507 48.506 48.509 amean 39.454 39.454 39.454 amin 39.074 39.074 39.075 amax 39.885 39.888 39.882 emean 0.177 0.177 0.177 emin 0.123 0.123 0.123 emax 0.217 0.217 0.217 imean 37.987 37.988 37.987 imin 37.371 37.372 37.370 imax 38.656 38.656 38.656 excite_mean 0.641 0.641 0.641 fracstop 1.000 1.000 1.000 cjmean 2.537 2.537 2.537 libcent 0 180.1 180.1 180.1 libamp 0 89.8 89.9 89.7 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 178.2 178.1 178.3 kozaiamp 180.0 180.0 180.0