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: 15VE166 # Created Fri Nov 22 02:10:32 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 30 # Arc: 2.25y # First observation: 2015/10/07 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000175 0.029418 0.000001 0.002196 0.026438 0.000000 # Chi-squared of fit: 14.10 DOF: 52 RMS: 0.12 # Min/Max residuals: -0.55 0.25 # Exact a, adot, b, bdot, g, gdot: 1.513335E-05 2.927307E-02 1.831514E-06 2.190546E-03 2.647414E-02 2.808453E-03 # Covariance matrix: 2.5097E-13 -3.2788E-14 -7.2609E-16 6.2765E-15 1.7516E-13 1.4784E-12 -3.2788E-14 4.1720E-13 -8.7814E-15 3.6765E-14 2.1048E-13 8.3530E-12 -7.2609E-16 -8.7814E-15 1.2020E-13 -8.6139E-14 -5.0469E-15 -2.3335E-13 6.2765E-15 3.6765E-14 -8.6139E-14 1.0786E-13 2.4836E-14 9.7920E-13 1.7516E-13 2.1048E-13 -5.0469E-15 2.4836E-14 3.0163E-13 5.7028E-12 1.4784E-12 8.3530E-12 -2.3335E-13 9.7920E-13 5.7028E-12 2.2251E-10 # lat0 lon0 xBary yBary zBary JD0 -0.917876 51.895323 0.896830 -0.007296 -0.464391 2457277.997529 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 15.03306 +/- 0.091 Argument of Peri: 324.53945 +/- 0.148 Long of Asc Node: 62.56844 +/- 0.002 Inclination: 4.34718 +/- 0.001 Eccentricity: 0.21104506 +/- 0.0003 Semi-Major Axis: 47.77965030 +/- 0.0071 Time of Perihelion: 2452233.0836 +/- 30.4 Perihelion: 37.69599135 +/- 0.0139 Aphelion: 57.86330925 +/- 0.0154 Period (y) 330.2727 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.29482884 +/- 0.0005 Ecliptic Y 29.53066897 +/- 0.0006 Ecliptic Z -0.60500982 +/- 0.0000 Ecliptic XDOT -0.00220253 +/- 0.0000 Ecliptic YDOT 0.00209308 +/- 0.0000 Ecliptic ZDOT 0.00022191 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.24480560 +/- 0.0006 Geocenter to KBO 37.77270317 +/- 0.0008 # Hcoef: 9.30
The following table shows the complete astrometric record for 15VE166. 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 (15VE166) followed by the observatory code and reference code for the source of the astrometry.
2015 09 12.49674 03 18 54.205 +17 21 12.80 25.6w 15VE166 568 C~2lVd 2015 10 07.54436 03 17 39.438 +17 16 29.86 25.3w 15VE166 568 C~2lVd 2015 10 07.60373 03 17 39.175 +17 16 28.92 25.3w 15VE166 568 C~2lVd 2015 10 09.58362 03 17 31.134 +17 15 58.84 25.2w 15VE166 568 C~2lVd 2015 11 07.33788 03 15 11.500 +17 07 20.43 24.9r 15VE166 568 C~2lVd 2015 11 07.38006 03 15 11.262 +17 07 19.59 25.1r 15VE166 568 C~2lVd 2015 11 07.42224 03 15 11.039 +17 07 18.92 25.0r 15VE166 568 C~2lVd 2015 11 10.50536 03 14 54.532 +17 06 18.22 24.9w 15VE166 568 C~2lVd 2015 11 17.35218 03 14 17.815 +17 04 03.75 25.4w 15VE166 568 C~2lVd 2015 11 17.39878 03 14 17.563 +17 04 02.91 25.4w 15VE166 568 C~2lVd 2015 12 06.36096 03 12 39.776 +16 58 10.26 25.0w 15VE166 568 C~2lVd 2015 12 06.49848 03 12 39.071 +16 58 07.40 25.8w 15VE166 568 C~2lVd 2016 01 01.34872 03 10 54.982 +16 52 11.99 25.5w 15VE166 568 C~2lVd 2016 01 08.25624 03 10 36.126 +16 51 14.13 25.3w 15VE166 568 C~2lVd 2016 02 10.30807 03 10 13.275 +16 51 11.18 25.6w 15VE166 568 C~2lVd 2016 09 07.62568 03 25 39.428 +17 54 12.18 15VE166 568 C~2lVd 2016 09 26.58416 03 24 57.484 +17 51 41.50 25.6w 15VE166 568 C~2lVd 2016 10 09.54522 03 24 10.753 +17 48 54.65 25.6w 15VE166 568 C~2lVd 2016 10 09.61729 03 24 10.448 +17 48 53.64 25.3w 15VE166 568 C~2lVd 2016 11 02.49681 03 22 17.011 +17 42 10.62 25.3w 15VE166 568 C~2lVd 2016 11 02.52573 03 22 16.847 +17 42 10.13 25.1w 15VE166 568 C~2lVd 2016 11 04.40084 03 22 07.001 +17 41 35.24 25.1w 15VE166 568 C~2lVd 2016 11 04.47292 03 22 06.622 +17 41 33.90 25.1w 15VE166 568 C~2lVe 2016 12 25.28177 03 17 56.178 +17 27 10.66 25.5w 15VE166 568 C~2lVe 2016 12 28.42845 03 17 44.842 +17 26 33.90 25.1w 15VE166 568 C~2lVe 2017 01 26.34230 03 16 43.675 +17 23 47.66 25.3w 15VE166 568 C~2lVe 2017 09 16.60340 03 32 04.120 +18 24 57.28 25.4w 15VE166 568 C~2lVe 2017 09 23.54254 03 31 47.913 +18 24 02.65 25.6w 15VE166 568 C~2lVe 2017 12 13.39064 03 25 28.924 +18 02 49.33 25.4w 15VE166 568 C~2lVe 2017 12 13.42791 03 25 28.749 +18 02 48.74 25.2w 15VE166 568 C~2lVe
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 ( 0.48) 0.00 ( -0.11)
2 0.0686 -1107.45 0.14 2.83 -0.06
3 0.0687 -1111.33 -0.15 2.89 -0.02
4 0.0742 -1230.37 -0.02 3.65 0.03
5 0.1529 -3297.50 0.17 24.08 -0.02
6 0.1530 -3301.02 0.03 24.16 -0.00
7 0.1531 -3304.28 0.14 24.35 0.13
8 0.1616 -3548.62 -0.15 27.77 0.06
9 0.1803 -4092.09 0.04 36.23 -0.01
10 0.1804 -4095.80 0.09 36.37 0.05
11 0.2323 -5542.51 -0.03 66.42 -0.00
12 0.2327 -5553.03 -0.55 66.34 -0.35
13 0.3035 -7088.96 -0.03 121.12 0.05
14 0.3224 -7365.59 0.11 137.72 0.12
15 0.4129 -7682.88 0.25 222.76 0.13
16 0.9887 6106.92 -0.04 450.25 -0.15
17 1.0406 5489.00 0.01 453.39 -0.09
18 1.0761 4800.78 0.15 458.60 0.03
19 1.0763 4796.31 0.12 458.71 0.09
20 1.1417 3125.94 -0.07 476.45 -0.01
21 1.1418 3123.55 -0.19 476.57 0.07
22 1.1469 2978.57 -0.08 478.41 0.03
23 1.1471 2972.99 0.04 478.48 -0.00
24 1.2862 -710.24 0.05 559.87 0.10
25 1.2948 -876.45 -0.03 566.30 -0.16
26 1.3740 -1765.09 0.04 632.73 -0.03
27 2.0126 11885.90 -0.02 900.63 0.00
28 2.0316 11648.09 0.07 902.99 -0.10
29 2.2530 6090.35 -0.03 988.67 0.07
30 2.2531 6087.78 -0.01 988.72 0.05
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.
15VE166 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.393 48.422 48.366 ecceobj 0.221 0.222 0.221 incobj 4.337 4.337 4.336 qmin 36.648 36.801 36.813 qmax 59.532 59.444 59.421 amean 47.798 47.798 47.798 amin 47.286 47.283 47.311 amax 48.393 48.422 48.366 emean 0.214 0.206 0.213 emin 0.196 0.185 0.196 emax 0.231 0.229 0.230 imean 2.910 3.643 2.981 imin 2.577 2.780 2.742 imax 3.444 4.544 3.480 excite_mean 0.220 0.216 0.219 fracstop 1.000 1.000 1.000 cjmean 3.088 3.090 3.089 libcent 0 83.5 89.0 82.1 libamp 0 28.9 39.5 22.2 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 198.3 198.2 184.4 kozaiamp 180.0 179.9 179.9