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: 15VC166
# Created Fri Nov 22 02:10:32 2024
# Orbit generated from Bernstein formalism
# Fitting 24 observations of 24
# Arc: 2.02y
# First observation: 2015/09/12
# Last observation: 2017/09/20
Preliminary a, adot, b, bdot, g, gdot:
-0.000064 0.030943 0.000001 0.001571 0.027280 0.000000
# Chi-squared of fit: 13.08 DOF: 42 RMS: 0.13
# Min/Max residuals: -0.62 0.22
# Exact a, adot, b, bdot, g, gdot:
1.831327E-05 3.061958E-02 5.454436E-07 1.556969E-03 2.705858E-02 -2.189687E-03
# Covariance matrix:
2.7553E-13 -8.5031E-14 -8.2216E-16 3.7862E-15 2.1292E-13 1.3784E-12
-8.5031E-14 5.6796E-13 -5.5666E-15 2.7432E-14 2.1563E-13 9.8955E-12
-8.2216E-16 -5.5666E-15 1.3075E-13 -1.0626E-13 -3.6877E-15 -1.3779E-13
3.7862E-15 2.7432E-14 -1.0626E-13 1.6032E-13 1.7800E-14 6.7741E-13
2.1292E-13 2.1563E-13 -3.6877E-15 1.7800E-14 3.9714E-13 6.4387E-12
1.3784E-12 9.8955E-12 -1.3779E-13 6.7741E-13 6.4387E-12 2.4444E-10
# lat0 lon0 xBary yBary zBary JD0
0.015207 51.918618 0.897052 0.000267 -0.464022 2457277.993429
# Heliocentric elements and errors
Epoch: 2457270.5000 = 2015/09/05
Mean Anomaly: 342.29578 +/- 0.074
Argument of Peri: 29.59484 +/- 0.131
Long of Asc Node: 50.25471 +/- 0.000
Inclination: 2.92063 +/- 0.001
Eccentricity: 0.24115735 +/- 0.0003
Semi-Major Axis: 48.09759463 +/- 0.0087
Time of Perihelion: 2463262.3057 +/- 25.1
Perihelion: 36.49850620 +/- 0.0155
Aphelion: 59.69668306 +/- 0.0177
Period (y) 333.5748 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 23.78243891 +/- 0.0005
Ecliptic Y 28.90176822 +/- 0.0007
Ecliptic Z 0.00984177 +/- 0.0000
Ecliptic XDOT -0.00257718 +/- 0.0000
Ecliptic YDOT 0.00173002 +/- 0.0000
Ecliptic ZDOT 0.00015753 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.42882183 +/- 0.0006
Geocenter to KBO 36.95685618 +/- 0.0009
# Hcoef: 8.99
The following table shows the complete astrometric record for 15VC166. 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 (15VC166) followed by the observatory code and reference code for the source of the astrometry.
2015 09 12.49264 03 17 59.251 +18 15 40.01 24.9w 15VC166 568 C~2lVd 2015 10 07.53854 03 16 42.843 +18 11 11.44 25.0w 15VC166 568 C~2lVd 2015 10 07.59790 03 16 42.602 +18 11 10.49 25.1w 15VC166 568 C~2lVd 2015 10 09.57780 03 16 34.362 +18 10 40.74 25.0w 15VC166 568 C~2lVd 2015 11 07.33264 03 14 11.487 +18 01 55.34 24.7r 15VC166 568 C~2lVd 2015 11 07.37479 03 14 11.251 +18 01 54.51 24.5r 15VC166 568 C~2lVd 2015 11 07.41697 03 14 11.013 +18 01 53.76 24.8r 15VC166 568 C~2lVd 2015 11 10.49950 03 13 54.153 +18 00 50.81 24.7w 15VC166 568 C~2lVd 2015 11 17.34635 03 13 16.616 +17 58 30.52 24.9w 15VC166 568 C~2lVd 2015 11 17.39294 03 13 16.358 +17 58 29.48 25.0w 15VC166 568 C~2lVd 2015 12 06.35508 03 11 36.508 +17 52 14.20 24.9w 15VC166 568 C~2lVd 2015 12 06.49265 03 11 35.774 +17 52 11.37 25.2w 15VC166 568 C~2lVd 2016 01 08.25043 03 09 30.892 +17 44 23.82 24.8w 15VC166 568 C~2lVd 2016 09 07.57363 03 25 09.892 +18 47 53.73 15VC166 568 C~2lVd 2016 09 27.51061 03 24 24.078 +18 45 27.51 25.1w 15VC166 568 C~2lVd 2016 10 05.48792 03 23 55.576 +18 43 51.46 24.8w 15VC166 568 C~2lVd 2016 10 07.49247 03 23 47.583 +18 43 24.42 23.8w 15VC166 568 C~2lVd 2016 10 09.49252 03 23 39.377 +18 42 56.15 25.2w 15VC166 568 C~2lVd 2016 10 09.56525 03 23 39.060 +18 42 54.88 24.7w 15VC166 568 C~2lVd 2016 11 02.50259 03 21 42.372 +18 36 07.17 25.0w 15VC166 568 C~2lVd 2016 12 24.32550 03 17 18.582 +18 20 17.04 25.1w 15VC166 568 C~2lVd 2017 01 02.42780 03 16 46.733 +18 18 21.96 25.2w 15VC166 568 C~2lVd 2017 09 15.56413 03 32 05.963 +19 18 19.58 15VC166 568 C~2lVd 2017 09 20.61305 03 31 54.924 +19 17 47.23 15VC166 568 C~2lVd
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 -0.09 0.00 0.08
2 0.0686 -1121.05 0.03 22.77 0.00
3 0.0687 -1124.62 0.11 22.75 -0.09
4 0.0742 -1245.74 0.05 24.57 -0.08
5 0.1529 -3349.54 0.10 50.74 0.02
6 0.1530 -3353.01 0.07 50.82 0.05
7 0.1531 -3356.48 0.04 50.99 0.16
8 0.1616 -3605.13 -0.03 53.65 0.00
9 0.1803 -4158.88 0.17 59.78 0.05
10 0.1804 -4162.71 0.17 59.75 -0.04
11 0.2323 -5637.10 0.05 76.46 -0.02
12 0.2327 -5647.96 -0.62 76.53 -0.09
13 0.3224 -7493.41 0.00 104.16 -0.09
14 0.9886 6416.92 -0.04 317.60 -0.01
15 1.0432 5749.80 -0.12 338.16 -0.10
16 1.0650 5333.49 0.06 346.40 -0.01
17 1.0705 5216.71 -0.33 348.66 0.22
18 1.0760 5096.69 0.12 350.51 0.06
19 1.0762 5092.01 -0.00 350.41 -0.14
20 1.1417 3383.73 0.05 373.88 0.03
21 1.2836 -487.76 0.19 417.49 0.04
22 1.3085 -955.61 -0.03 424.09 0.02
23 2.0098 12596.86 0.06 649.84 -0.04
24 2.0236 12436.79 -0.01 655.81 -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.
15VC166 quality flag:2 Type: 2:1E SCATNEAR 2:1E axisobj 48.647 48.665 48.629 ecceobj 0.247 0.247 0.247 incobj 2.911 2.911 2.911 qmin 36.070 35.673 36.031 qmax 60.777 61.296 60.780 amean 47.798 47.839 47.799 amin 47.027 46.946 47.051 amax 48.694 48.750 48.677 emean 0.232 0.234 0.232 emin 0.216 0.201 0.215 emax 0.249 0.258 0.249 imean 2.094 1.817 2.146 imin 1.715 0.880 1.756 imax 2.544 2.486 2.511 excite_mean 0.235 0.236 0.235 fracstop 1.000 1.000 1.000 cjmean 3.079 3.078 3.079 libcent 0 180.1 -180.0 178.7 libamp 0 165.4 -180.0 164.6 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 164.7 158.0 203.5 kozaiamp 180.0 179.9 180.0