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: 15VU165 # Created Sun Dec 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 2.35y # First observation: 2015/08/11 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000179 0.034218 -0.000018 0.002673 0.029732 0.000000 # Chi-squared of fit: 3.45 DOF: 68 RMS: 0.05 # Min/Max residuals: -0.13 0.12 # Exact a, adot, b, bdot, g, gdot: 1.804899E-05 3.341838E-02 1.457644E-06 2.603015E-03 2.932028E-02 -2.078239E-03 # Covariance matrix: 1.9405E-13 -5.5533E-15 1.1174E-15 8.6002E-15 1.3015E-13 2.1579E-12 -5.5533E-15 5.2467E-13 -8.7443E-15 5.3097E-14 2.8748E-13 1.3272E-11 1.1174E-15 -8.7443E-15 9.3820E-14 -8.6735E-14 -3.9343E-15 -3.1397E-13 8.6002E-15 5.3097E-14 -8.6735E-14 1.3897E-13 3.6976E-14 1.8076E-12 1.3015E-13 2.8748E-13 -3.9343E-15 3.6976E-14 2.7129E-13 9.2494E-12 2.1579E-12 1.3272E-11 -3.1397E-13 1.8076E-12 9.2494E-12 4.5177E-10 # lat0 lon0 xBary yBary zBary JD0 -2.676614 50.780243 1.015122 0.001962 0.039280 2457246.110859 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 330.04817 +/- 0.132 Argument of Peri: 9.48018 +/- 0.200 Long of Asc Node: 80.44423 +/- 0.003 Inclination: 5.13587 +/- 0.001 Eccentricity: 0.16053845 +/- 0.0004 Semi-Major Axis: 39.22224989 +/- 0.0055 Time of Perihelion: 2464705.2979 +/- 32.8 Perihelion: 32.92557049 +/- 0.0179 Aphelion: 45.51892928 +/- 0.0185 Period (y) 245.6444 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.29920514 +/- 0.0004 Ecliptic Y 25.72166109 +/- 0.0005 Ecliptic Z -1.59263173 +/- 0.0000 Ecliptic XDOT -0.00253500 +/- 0.0000 Ecliptic YDOT 0.00182536 +/- 0.0000 Ecliptic ZDOT 0.00025192 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.07924405 +/- 0.0004 Geocenter to KBO 34.10608112 +/- 0.0006 # Hcoef: 9.09
The following table shows the complete astrometric record for 15VU165. 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 (15VU165) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.61007 03 16 18.876 +15 21 58.26 24.9w 15VU165 568 C~2lVc 2015 09 06.62757 03 16 19.697 +15 20 33.87 24.1w 15VU165 568 C~2lVc 2015 09 12.51723 03 16 09.189 +15 19 35.02 24.7w 15VU165 568 C~2lVc 2015 10 07.45292 03 14 45.762 +15 13 10.22 24.2w 15VU165 568 C~2lVc 2015 10 08.45753 03 14 41.245 +15 12 50.83 24.4w 15VU165 568 C~2lVc 2015 10 08.51654 03 14 40.979 +15 12 49.77 24.6w 15VU165 568 C~2lVc 2015 11 07.36952 03 12 00.414 +15 02 05.50 24.3r 15VU165 568 C~2lVc 2015 11 07.41164 03 12 00.158 +15 02 04.60 24.2r 15VU165 568 C~2lVc 2015 11 07.45387 03 11 59.908 +15 02 03.67 24.3r 15VU165 568 C~2lVc 2015 11 10.54061 03 11 41.594 +15 00 54.18 24.6w 15VU165 568 C~2lVc 2015 11 17.38710 03 11 00.906 +14 58 22.71 24.5w 15VU165 568 C~2lVc 2015 11 17.43381 03 11 00.632 +14 58 21.71 24.6w 15VU165 568 C~2lVc 2015 12 06.39596 03 09 12.815 +14 52 01.68 24.5w 15VU165 568 C~2lVc 2015 12 13.33048 03 08 37.365 +14 50 05.69 24.5w 15VU165 568 C~2lVc 2015 12 13.38903 03 08 37.078 +14 50 04.77 24.6w 15VU165 568 C~2lVc 2016 01 01.38342 03 07 18.679 +14 46 19.49 24.6w 15VU165 568 C~2lVc 2016 01 02.34977 03 07 15.566 +14 46 11.99 24.2w 15VU165 568 C~2lVc 2016 01 07.33018 03 07 01.029 +14 45 41.21 24.2w 15VU165 568 C~2lVc 2016 02 04.30735 03 06 31.662 +14 46 36.72 25.3w 15VU165 568 C~2lVc 2016 02 04.31413 03 06 31.676 +14 46 36.91 25.1w 15VU165 568 C~2lVc 2016 02 04.32117 03 06 31.676 +14 46 36.94 25.3w 15VU165 568 C~2lVc 2016 02 04.32803 03 06 31.677 +14 46 37.06 25.1w 15VU165 568 C~2lVc 2016 02 05.26985 03 06 32.324 +14 46 45.85 25.0w 15VU165 568 C~2lVc 2016 02 05.27611 03 06 32.321 +14 46 45.79 24.9w 15VU165 568 C~2lVc 2016 02 10.29646 03 06 37.575 +14 47 40.04 24.7w 15VU165 568 C~2lVc 2016 09 07.56785 03 23 55.647 +15 59 00.09 15VU165 568 C~2lVc 2016 09 27.50655 03 23 05.361 +15 55 02.55 24.7w 15VU165 568 C~2lVc 2016 10 10.44325 03 22 12.176 +15 51 21.57 24.7w 15VU165 568 C~2lVc 2016 10 10.50202 03 22 11.893 +15 51 20.51 25.0w 15VU165 568 C~2lVc 2016 10 10.51973 03 22 11.812 +15 51 20.18 24.7w 15VU165 568 C~2lVc 2016 11 02.51417 03 20 09.184 +15 43 27.99 24.5w 15VU165 568 C~2lVc 2016 11 04.38927 03 19 58.192 +15 42 47.32 24.6w 15VU165 568 C~2lVc 2016 12 24.31885 03 15 24.060 +15 27 33.94 24.6w 15VU165 568 C~2lVc 2017 01 02.42106 03 14 49.960 +15 26 06.78 24.4w 15VU165 568 C~2lVc 2017 01 26.29235 03 14 02.301 +15 25 18.93 24.7w 15VU165 568 C~2lVc 2017 01 26.30729 03 14 02.298 +15 25 18.88 24.5w 15VU165 568 C~2lVc 2017 12 16.37785 03 23 47.019 +16 08 42.13 24.8w 15VU165 568 C~2lVc
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 -0.01 0.00 -0.01
2 0.0712 -10.55 0.05 -84.57 -0.06
3 0.0874 -172.65 -0.07 -101.72 0.08
4 0.1556 -1438.51 -0.02 -157.06 0.03
5 0.1584 -1506.69 -0.04 -158.60 -0.06
6 0.1585 -1510.69 0.09 -158.61 -0.01
7 0.2403 -3923.78 0.03 -165.92 -0.02
8 0.2404 -3927.60 0.00 -165.80 0.04
9 0.2405 -3931.34 0.07 -165.74 0.04
10 0.2490 -4205.69 0.01 -162.21 -0.05
11 0.2677 -4814.57 -0.06 -151.22 -0.03
12 0.2678 -4818.67 0.06 -151.12 -0.04
13 0.3197 -6427.30 0.07 -99.01 0.05
14 0.3387 -6954.10 -0.10 -72.48 0.08
15 0.3389 -6958.36 -0.02 -72.24 0.06
16 0.3909 -8115.46 -0.05 17.85 0.07
17 0.3935 -8161.02 -0.10 22.86 -0.09
18 0.4072 -8372.67 -0.07 50.37 0.02
19 0.4838 -8768.28 -0.06 219.50 -0.10
20 0.4838 -8768.03 0.12 219.63 -0.02
21 0.4838 -8768.02 0.06 219.66 -0.03
22 0.4838 -8767.98 0.03 219.77 0.04
23 0.4864 -8756.54 0.05 225.68 0.04
24 0.4864 -8756.60 -0.08 225.64 -0.05
25 0.5002 -8668.37 0.05 257.19 -0.04
26 1.0759 6948.55 -0.01 455.38 0.01
27 1.1304 6186.04 -0.02 408.73 -0.01
28 1.1659 5387.15 0.02 389.57 -0.02
29 1.1660 5382.93 -0.03 389.58 0.03
30 1.1661 5381.71 0.02 389.56 0.02
31 1.2290 3548.93 0.01 384.92 0.04
32 1.2342 3385.05 -0.04 386.34 0.03
33 1.3709 -677.39 0.08 531.18 0.12
34 1.3958 -1176.03 -0.01 576.33 -0.05
35 1.4611 -1853.53 -0.07 711.37 0.00
36 1.4612 -1853.59 0.01 711.34 -0.13
37 2.3484 6975.08 0.02 1050.31 -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.
15VU165 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.590 39.597 39.584 ecceobj 0.164 0.164 0.164 incobj 5.131 5.131 5.131 qmin 32.484 32.471 32.481 qmax 47.112 47.136 47.139 amean 39.458 39.458 39.458 amin 38.962 38.970 38.956 amax 40.004 39.989 40.017 emean 0.160 0.160 0.160 emin 0.142 0.141 0.141 emax 0.178 0.179 0.179 imean 3.202 3.260 3.148 imin 2.515 2.580 2.435 imax 4.027 4.020 4.069 excite_mean 0.169 0.170 0.169 fracstop 1.000 1.000 1.000 cjmean 3.019 3.019 3.020 libcent 0 179.9 179.9 179.8 libamp 0 110.1 108.6 113.4 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 184.3 177.0 191.6 kozaiamp 180.0 180.0 180.0