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: 15VD166 # Created Sun Dec 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 40 observations of 40 # Arc: 3.07y # First observation: 2014/11/17 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: 0.000332 0.039785 -0.000009 -0.001301 0.031747 0.000000 # Chi-squared of fit: 10.85 DOF: 74 RMS: 0.09 # Min/Max residuals: -0.40 0.23 # Exact a, adot, b, bdot, g, gdot: 1.953437E-05 4.073781E-02 -2.810109E-07 -1.330843E-03 3.220553E-02 6.190011E-03 # Covariance matrix: 2.5359E-13 -2.9607E-13 -3.3983E-15 7.0042E-15 -9.8514E-14 -1.8468E-12 -2.9607E-13 4.8918E-13 6.7131E-15 -1.3815E-14 1.8606E-13 3.6445E-12 -3.3983E-15 6.7131E-15 1.4244E-13 -7.7027E-14 2.8081E-15 5.6531E-14 7.0042E-15 -1.3815E-14 -7.7027E-14 5.6874E-14 -6.0648E-15 -1.1635E-13 -9.8514E-14 1.8606E-13 2.8081E-15 -6.0648E-15 1.9034E-13 1.5745E-12 -1.8468E-12 3.6445E-12 5.6531E-14 -1.1635E-13 1.5745E-12 3.0694E-11 # lat0 lon0 xBary yBary zBary JD0 -0.392531 48.576164 -0.101524 -0.006596 -0.984231 2456978.782278 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 15.28801 +/- 0.009 Argument of Peri: 157.78736 +/- 0.023 Long of Asc Node: 217.27590 +/- 0.003 Inclination: 1.90996 +/- 0.000 Eccentricity: 0.35872612 +/- 0.0001 Semi-Major Axis: 47.73659991 +/- 0.0052 Time of Perihelion: 2451854.5773 +/- 2.9 Perihelion: 30.61223449 +/- 0.0062 Aphelion: 64.86096533 +/- 0.0088 Period (y) 329.8264 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 21.11528428 +/- 0.0003 Ecliptic Y 24.08896917 +/- 0.0003 Ecliptic Z -0.21274742 +/- 0.0000 Ecliptic XDOT -0.00225346 +/- 0.0000 Ecliptic YDOT 0.00268036 +/- 0.0000 Ecliptic ZDOT -0.00011664 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.03402765 +/- 0.0003 Geocenter to KBO 31.05057045 +/- 0.0004 # Hcoef: 9.26
The following table shows the complete astrometric record for 15VD166. 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 (15VD166) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.28150 03 04 55.475 +16 58 34.44 25.2r 15VD166 568 C~2lVd 2014 11 17.39021 03 04 54.789 +16 58 31.73 24.3r 15VD166 568 C~2lVd 2014 11 17.50402 03 04 54.075 +16 58 28.75 24.4r 15VD166 568 C~2lVd 2014 11 19.29385 03 04 43.154 +16 57 42.52 24.4r 15VD166 568 C~2lVd 2014 11 23.39737 03 04 18.290 +16 55 57.76 24.5r 15VD166 568 C~2lVd 2015 09 07.62902 03 19 46.486 +17 53 52.32 24.8w 15VD166 568 C~2lVd 2015 09 12.49264 03 19 38.241 +17 53 13.74 24.2w 15VD166 568 C~2lVd 2015 10 07.53854 03 18 14.769 +17 47 20.71 24.5w 15VD166 568 C~2lVd 2015 10 07.59790 03 18 14.509 +17 47 19.54 24.0w 15VD166 568 C~2lVd 2015 10 09.57780 03 18 05.336 +17 46 42.03 24.8w 15VD166 568 C~2lVd 2015 11 07.33264 03 15 24.792 +17 35 53.01 23.8r 15VD166 568 C~2lVd 2015 11 07.37479 03 15 24.530 +17 35 51.99 24.3r 15VD166 568 C~2lVd 2015 11 07.41697 03 15 24.262 +17 35 50.94 24.4r 15VD166 568 C~2lVd 2015 11 10.49950 03 15 05.225 +17 34 34.50 24.4w 15VD166 568 C~2lVd 2015 11 17.34635 03 14 22.818 +17 31 44.30 24.3w 15VD166 568 C~2lVd 2015 11 17.39294 03 14 22.529 +17 31 43.09 24.5w 15VD166 568 C~2lVd 2015 12 06.35508 03 12 29.877 +17 24 11.43 24.5w 15VD166 568 C~2lVd 2015 12 06.49265 03 12 29.077 +17 24 08.15 23.8w 15VD166 568 C~2lVd 2016 01 01.34294 03 10 30.738 +17 16 14.57 24.5w 15VD166 568 C~2lVd 2016 01 01.34872 03 10 30.706 +17 16 14.41 24.5w 15VD166 568 C~2lVd 2016 01 07.41130 03 10 12.074 +17 15 00.41 25.1w 15VD166 568 C~2lVd 2016 01 08.25624 03 10 09.841 +17 14 51.29 24.6w 15VD166 568 C~2lVd 2016 02 05.28768 03 09 44.274 +17 13 13.43 24.3w 15VD166 568 C~2lVd 2016 02 10.30807 03 09 50.329 +17 13 38.77 24.6w 15VD166 568 C~2lVd 2016 09 07.59099 03 28 57.050 +18 23 07.89 15VD166 568 C~2lVd 2016 10 05.50531 03 27 38.580 +18 17 42.50 24.8w 15VD166 568 C~2lVd 2016 10 07.50982 03 27 29.876 +18 17 08.13 24.5w 15VD166 568 C~2lVd 2016 10 07.60551 03 27 29.429 +18 17 06.36 24.7w 15VD166 568 C~2lVd 2016 10 09.51019 03 27 20.843 +18 16 32.74 24.7w 15VD166 568 C~2lVd 2016 10 09.58259 03 27 20.512 +18 16 31.29 24.8w 15VD166 568 C~2lVd 2016 11 02.50259 03 25 11.195 +18 08 12.95 24.5w 15VD166 568 C~2lVd 2016 11 04.47870 03 24 59.261 +18 07 27.31 24.3w 15VD166 568 C~2lVd 2016 12 25.28177 03 20 10.896 +17 49 11.92 24.9w 15VD166 568 C~2lVd 2016 12 28.42845 03 19 57.961 +17 48 23.14 24.7w 15VD166 568 C~2lVd 2016 12 28.44773 03 19 57.866 +17 48 22.89 24.6w 15VD166 568 C~2lVd 2017 01 27.29772 03 18 49.227 +17 44 08.93 24.6w 15VD166 568 C~2lVd 2017 09 15.55809 03 37 52.047 +18 49 32.56 24.6w 15VD166 568 C~2lVd 2017 09 20.60688 03 37 40.999 +18 48 46.62 24.7w 15VD166 568 C~2lVd 2017 12 13.37172 03 30 23.534 +18 22 07.66 24.5w 15VD166 568 C~2lVd 2017 12 13.40930 03 30 23.328 +18 22 07.00 24.6w 15VD166 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 0.10 0.00 -0.08
2 0.0003 -10.21 0.02 0.10 0.03
3 0.0006 -20.88 -0.03 0.06 0.02
4 0.0055 -184.23 0.08 -1.25 -0.05
5 0.0167 -556.05 -0.05 -3.60 -0.02
6 0.8059 13191.77 0.03 -192.36 -0.12
7 0.8192 13067.61 -0.02 -199.47 0.06
8 0.8878 11820.49 -0.14 -233.67 0.08
9 0.8879 11816.59 0.07 -233.84 -0.04
10 0.8934 11679.88 0.03 -236.20 0.03
11 0.9721 9289.53 0.07 -265.48 0.02
12 0.9722 9285.64 0.10 -265.48 0.03
13 0.9723 9281.66 0.04 -265.49 0.03
14 0.9807 8998.38 -0.04 -267.85 -0.01
15 0.9995 8367.36 -0.04 -272.58 0.04
16 0.9996 8363.05 0.00 -272.66 -0.04
17 1.0515 6686.88 -0.05 -281.72 0.03
18 1.0519 6674.95 -0.40 -281.84 -0.07
19 1.1227 4914.18 0.20 -285.74 0.03
20 1.1227 4913.69 0.01 -285.77 0.00
21 1.1393 4636.58 -0.09 -285.40 0.17
22 1.1416 4603.30 0.14 -285.59 -0.05
23 1.2184 4224.02 -0.19 -281.32 0.06
24 1.2321 4314.43 -0.04 -280.26 0.16
25 1.8078 21286.35 0.01 -459.78 -0.01
26 1.8843 20111.70 0.09 -501.26 0.12
27 1.8897 19981.87 0.00 -504.05 -0.03
28 1.8900 19975.20 -0.19 -504.19 -0.08
29 1.8952 19847.22 -0.06 -506.63 -0.04
30 1.8954 19842.25 0.04 -506.88 -0.21
31 1.9609 17917.57 0.13 -532.58 -0.03
32 1.9663 17740.12 0.09 -534.31 -0.06
33 2.1054 13457.93 -0.13 -553.46 -0.03
34 2.1140 13266.07 0.23 -553.29 -0.08
35 2.1141 13264.69 -0.00 -553.18 0.02
36 2.1958 12248.02 0.07 -546.55 -0.01
37 2.8290 29167.43 -0.05 -737.50 0.05
38 2.8428 29000.94 -0.00 -745.75 0.04
39 3.0721 22479.09 -0.02 -820.15 -0.01
40 3.0722 22476.04 0.00 -820.07 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.
15VD166 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.320 48.340 48.300 ecceobj 0.367 0.367 0.367 incobj 1.905 1.905 1.905 qmin 29.886 29.892 29.892 qmax 66.528 66.599 66.502 amean 47.797 47.797 47.797 amin 47.274 47.297 47.255 amax 48.449 48.500 48.478 emean 0.362 0.362 0.362 emin 0.349 0.350 0.349 emax 0.374 0.374 0.374 imean 1.776 1.980 1.658 imin 1.190 1.277 0.747 imax 2.864 2.864 2.864 excite_mean 0.363 0.363 0.363 fracstop 1.000 1.000 1.000 cjmean 2.978 2.977 2.978 libcent 0 68.2 67.5 68.7 libamp 0 14.4 11.3 17.6 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 131.5 144.2 119.4 kozaiamp 180.0 180.0 179.9