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: 15VK168 # Created Fri Apr 19 01:17:55 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 36 observations of 36 # Arc: 9.14y # First observation: 2014/11/17 # Last observation: 2024/01/09 # Chi-squared of fit: 5.13 DOF: 66 RMS: 0.07 # Min/Max residuals: -0.17 0.16 # Exact a, adot, b, bdot, g, gdot: 1.785437E-05 3.034543E-02 -3.627954E-06 -7.659674E-03 2.664345E-02 7.343196E-04 # Covariance matrix: 2.1520E-13 -1.5913E-13 -3.7673E-14 3.8017E-14 -4.1409E-14 -5.1332E-13 -1.5913E-13 1.5290E-13 3.8506E-14 -3.8710E-14 2.5688E-14 5.2383E-13 -3.7673E-14 3.8506E-14 8.0506E-14 -2.5341E-14 1.9911E-15 1.4104E-13 3.8017E-14 -3.8710E-14 -2.5341E-14 1.8138E-14 -3.2197E-15 -1.4125E-13 -4.1409E-14 2.5688E-14 1.9911E-15 -3.2197E-15 1.3896E-13 3.4056E-14 -5.1332E-13 5.2383E-13 1.4104E-13 -1.4125E-13 3.4056E-14 1.9156E-12 # lat0 lon0 xBary yBary zBary JD0 -2.052668 49.354731 -0.088765 -0.035148 -0.984855 2456978.818008 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 2.37319 +/- 0.004 Argument of Peri: 182.89620 +/- 0.009 Long of Asc Node: 221.61791 +/- 0.000 Inclination: 14.30344 +/- 0.000 Eccentricity: 0.34763710 +/- 0.0001 Semi-Major Axis: 58.97858545 +/- 0.0063 Time of Perihelion: 2455887.8908 +/- 1.9 Perihelion: 38.47544114 +/- 0.0055 Aphelion: 79.48172975 +/- 0.0092 Period (y) 452.9494 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.00351896 +/- 0.0003 Ecliptic Y 29.26698234 +/- 0.0004 Ecliptic Z -1.34450492 +/- 0.0000 Ecliptic XDOT -0.00233952 +/- 0.0000 Ecliptic YDOT 0.00206202 +/- 0.0000 Ecliptic ZDOT -0.00078920 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.51673209 +/- 0.0004 Geocenter to KBO 37.53270223 +/- 0.0005 # Hcoef: 7.61
The following table shows the complete astrometric record for 15VK168. 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 (15VK168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.31723 03 09 55.689 +15 35 25.77 23.1r 15VK168 568 C~2lVm 2014 11 17.42609 03 09 55.114 +15 35 23.19 23.3r 15VK168 568 C~2lVm 2014 11 17.54029 03 09 54.525 +15 35 20.33 23.3r 15VK168 568 C~2lVm 2014 11 19.33914 03 09 45.345 +15 34 35.95 23.4r 15VK168 568 C~2lVm 2015 09 07.62490 03 21 51.358 +16 02 25.29 23.8w 15VK168 568 C~2lVm 2015 09 12.48855 03 21 44.566 +16 01 20.95 23.8w 15VK168 568 C~2lVm 2015 10 07.53269 03 20 35.581 +15 53 52.74 23.6w 15VK168 568 C~2lVm 2015 10 07.59208 03 20 35.355 +15 53 51.54 23.6w 15VK168 568 C~2lVm 2015 10 09.57195 03 20 27.765 +15 53 09.10 23.6w 15VK168 568 C~2lVm 2015 11 06.34408 03 18 19.646 +15 42 13.14 23.4r 15VK168 568 C~2lVm 2015 11 06.41470 03 18 19.281 +15 42 11.46 23.3r 15VK168 568 C~2lVm 2015 11 06.48426 03 18 18.920 +15 42 09.65 23.3r 15VK168 568 C~2lVm 2015 11 07.50182 03 18 13.725 +15 41 44.59 23.6w 15VK168 568 C~2lVm 2015 11 17.48361 03 17 22.283 +15 37 40.52 23.5w 15VK168 568 C~2lVm 2015 11 17.57138 03 17 21.817 +15 37 38.26 23.6w 15VK168 568 C~2lVm 2015 12 06.34926 03 15 48.457 +15 30 30.20 23.7w 15VK168 568 C~2lVm 2015 12 06.48675 03 15 47.803 +15 30 27.38 23.6w 15VK168 568 C~2lVm 2015 12 31.37031 03 14 10.024 +15 23 15.46 23.6w 15VK168 568 C~2lVm 2016 01 07.39971 03 13 50.933 +15 21 52.96 23.8w 15VK168 568 C~2lVm 2016 02 05.29926 03 13 23.639 +15 19 53.93 23.8w 15VK168 568 C~2lVm 2016 02 11.25262 03 13 29.012 +15 20 14.56 23.7w 15VK168 568 C~2lVm 2016 09 07.58521 03 29 09.249 +16 02 54.35 23.7w 15VK168 568 C~2lVm 2016 09 29.49637 03 28 23.195 +15 57 06.14 23.7w 15VK168 568 C~2lVm 2016 10 07.50403 03 27 55.980 +15 54 26.09 23.7w 15VK168 568 C~2lVm 2016 10 07.59973 03 27 55.611 +15 54 24.17 23.7w 15VK168 568 C~2lVm 2016 10 09.50422 03 27 48.428 +15 53 44.01 23.8w 15VK168 568 C~2lVm 2016 10 09.57681 03 27 48.157 +15 53 42.57 23.7w 15VK168 568 C~2lVm 2016 11 02.49102 03 26 00.369 +15 44 34.23 23.6w 15VK168 568 C~2lVm 2016 11 04.46713 03 25 50.431 +15 43 46.83 23.6w 15VK168 568 C~2lVm 2016 12 28.44224 03 21 37.913 +15 25 22.12 23.8w 15VK168 568 C~2lVm 2016 12 28.45409 03 21 37.871 +15 25 22.01 23.8w 15VK168 568 C~2lVm 2017 01 27.30860 03 20 38.258 +15 21 33.55 23.9w 15VK168 568 C~2lVm 2017 12 13.35764 03 29 59.997 +15 30 03.59 23.6w 15VK168 568 C~2lVm 2024 01 09.131070 04 11 48.543 +15 10 08.75 23.8G 15VK168 G37 C~7gt1 2024 01 09.243760 04 11 48.135 +15 10 07.99 15VK168 G37 C~7gt1 2024 01 09.359130 04 11 47.723 +15 10 07.25 15VK168 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 0.08 0.00 -0.17
2 0.0003 0.00 -0.03 0.00 -0.06
3 0.0006 0.00 0.06 0.00 -0.08
4 0.0055 0.00 0.01 0.00 -0.08
5 0.8058 0.00 -0.08 0.00 -0.03
6 0.8191 0.00 0.04 0.00 -0.03
7 0.8877 0.00 0.02 0.00 -0.04
8 0.8878 0.00 0.06 0.00 0.03
9 0.8932 0.00 -0.00 0.00 0.04
10 0.9693 0.00 -0.07 0.00 0.01
11 0.9695 0.00 -0.06 0.00 0.05
12 0.9697 0.00 -0.05 0.00 -0.04
13 0.9724 0.00 -0.00 0.00 -0.03
14 0.9998 0.00 -0.02 0.00 0.03
15 1.0000 0.00 -0.13 0.00 -0.09
16 1.0514 0.00 -0.04 0.00 0.06
17 1.0518 0.00 -0.03 0.00 0.14
18 1.1199 0.00 -0.01 0.00 0.04
19 1.1392 0.00 0.16 0.00 0.04
20 1.2183 0.00 -0.09 0.00 0.08
21 1.2346 0.00 0.02 0.00 0.03
22 1.8077 0.00 0.03 0.00 0.03
23 1.8677 0.00 0.15 0.00 0.06
24 1.8896 0.00 0.08 0.00 -0.08
25 1.8899 0.00 -0.01 0.00 -0.00
26 1.8951 0.00 -0.12 0.00 -0.05
27 1.8953 0.00 0.10 0.00 0.06
28 1.9608 0.00 -0.03 0.00 0.07
29 1.9662 0.00 0.03 0.00 -0.00
30 2.1140 0.00 0.08 0.00 -0.01
31 2.1140 0.00 0.05 0.00 0.05
32 2.1957 0.00 0.02 0.00 -0.01
33 3.0720 0.00 -0.07 0.00 0.13
34 9.1439 0.00 0.08 0.00 -0.03
35 9.1442 0.00 -0.02 0.00 -0.05
36 9.1445 0.00 -0.09 0.00 -0.03
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.
15VK168 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 59.689 59.688 59.689 ecceobj 0.355 0.355 0.355 incobj 14.261 14.261 14.261 qmin 37.287 37.297 37.280 qmax 81.563 81.547 81.550 amean 58.877 58.877 58.877 amin 58.251 58.247 58.238 amax 59.721 59.722 59.715 emean 0.351 0.351 0.351 emin 0.338 0.338 0.338 emax 0.366 0.366 0.366 imean 14.781 14.781 14.781 imin 14.366 14.364 14.367 imax 15.181 15.185 15.182 excite_mean 0.434 0.434 0.434 fracstop 1.000 1.000 1.000 cjmean 3.044 3.044 3.044 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -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 181.1 181.1 181.1 kozaiamp 180.0 180.0 180.0