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: 15VH167 # Created Sat Apr 27 01:17:45 2024 # Orbit generated from Bernstein formalism # Fitting 36 observations of 36 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000118 0.028463 -0.000001 0.000325 0.026646 0.000000 # Chi-squared of fit: 5.06 DOF: 66 RMS: 0.07 # Min/Max residuals: -0.18 0.24 # Exact a, adot, b, bdot, g, gdot: 1.744784E-05 2.826108E-02 -7.385056E-08 3.233911E-04 2.659634E-02 3.441523E-03 # Covariance matrix: 1.7439E-13 -1.0666E-14 -1.9219E-16 1.2273E-15 1.2077E-13 2.1486E-12 -1.0666E-14 3.6086E-13 -1.3279E-15 5.9676E-15 2.1598E-13 1.0339E-11 -1.9219E-16 -1.3279E-15 1.0047E-13 -8.0491E-14 -9.3768E-16 -5.6422E-14 1.2273E-15 5.9676E-15 -8.0491E-14 1.0769E-13 4.6212E-15 2.4891E-13 1.2077E-13 2.1598E-13 -9.3768E-16 4.6212E-15 2.5276E-13 8.0315E-12 2.1486E-12 1.0339E-11 -5.6422E-14 2.4891E-13 8.0315E-12 4.3098E-10 # lat0 lon0 xBary yBary zBary JD0 -0.184683 52.101298 0.934381 -0.001096 -0.386206 2457273.129809 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 37.68688 +/- 0.136 Argument of Peri: 295.52344 +/- 0.210 Long of Asc Node: 66.39123 +/- 0.014 Inclination: 0.67558 +/- 0.001 Eccentricity: 0.13766526 +/- 0.0006 Semi-Major Axis: 42.24117421 +/- 0.0083 Time of Perihelion: 2446772.8991 +/- 37.7 Perihelion: 36.42603189 +/- 0.0272 Aphelion: 48.05631652 +/- 0.0279 Period (y) 274.5441 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.06627110 +/- 0.0004 Ecliptic Y 29.39982650 +/- 0.0006 Ecliptic Z -0.12118953 +/- 0.0000 Ecliptic XDOT -0.00207984 +/- 0.0000 Ecliptic YDOT 0.00206026 +/- 0.0000 Ecliptic ZDOT 0.00003220 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.99407704 +/- 0.0005 Geocenter to KBO 37.59915177 +/- 0.0007 # Hcoef: 7.83
The following table shows the complete astrometric record for 15VH167. 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 (15VH167) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62902 03 18 56.855 +18 06 54.20 24.1w 15VH167 568 C~2lVi 2015 09 12.49264 03 18 48.794 +18 06 23.05 23.4w 15VH167 568 C~2lVi 2015 10 07.53854 03 17 32.581 +18 01 31.64 23.9w 15VH167 568 C~2lVi 2015 10 07.59790 03 17 32.323 +18 01 30.70 23.9w 15VH167 568 C~2lVi 2015 10 09.57780 03 17 24.146 +18 00 59.38 23.8w 15VH167 568 C~2lVi 2015 11 07.33264 03 15 02.270 +17 51 55.06 23.7r 15VH167 568 C~2lVi 2015 11 07.37479 03 15 02.037 +17 51 54.22 23.6r 15VH167 568 C~2lVi 2015 11 07.41697 03 15 01.805 +17 51 53.32 23.5r 15VH167 568 C~2lVi 2015 11 10.49950 03 14 45.065 +17 50 48.76 23.8w 15VH167 568 C~2lVi 2015 11 17.34635 03 14 07.774 +17 48 24.99 23.8w 15VH167 568 C~2lVi 2015 11 17.39294 03 14 07.516 +17 48 24.05 23.7w 15VH167 568 C~2lVi 2015 12 06.35508 03 12 28.266 +17 42 00.26 23.7w 15VH167 568 C~2lVi 2015 12 06.49265 03 12 27.572 +17 41 57.70 23.9w 15VH167 568 C~2lVi 2016 01 01.34294 03 10 41.848 +17 35 09.17 23.9w 15VH167 568 C~2lVi 2016 01 07.40549 03 10 24.752 +17 34 03.77 23.9w 15VH167 568 C~2lVi 2016 01 08.25043 03 10 22.657 +17 33 55.89 23.9w 15VH167 568 C~2lVi 2016 02 05.28189 03 09 54.920 +17 32 18.53 23.7w 15VH167 568 C~2lVi 2016 02 10.30227 03 09 58.989 +17 32 37.18 24.0w 15VH167 568 C~2lVi 2016 09 07.57363 03 25 29.113 +18 32 21.97 15VH167 568 C~2lVi 2016 09 27.51061 03 24 43.183 +18 29 33.24 24.1w 15VH167 568 C~2lVi 2016 09 29.48481 03 24 36.662 +18 29 09.25 23.8w 15VH167 568 C~2lVi 2016 10 05.48792 03 24 14.864 +18 27 49.24 23.6w 15VH167 568 C~2lVi 2016 10 07.49247 03 24 06.953 +18 27 20.31 23.8w 15VH167 568 C~2lVi 2016 10 07.58817 03 24 06.539 +18 27 18.84 24.1w 15VH167 568 C~2lVi 2016 10 09.49252 03 23 58.781 +18 26 50.24 23.7w 15VH167 568 C~2lVi 2016 10 09.56525 03 23 58.457 +18 26 49.15 23.8w 15VH167 568 C~2lVi 2016 11 02.50259 03 22 03.031 +18 19 43.76 23.8w 15VH167 568 C~2lVi 2016 11 04.47870 03 21 52.476 +18 19 04.74 23.9w 15VH167 568 C~2lVi 2016 12 24.32550 03 17 42.189 +18 03 33.50 23.8w 15VH167 568 C~2lVi 2016 12 25.28177 03 17 38.545 +18 03 19.91 15VH167 568 C~2lVi 2016 12 28.42845 03 17 27.048 +18 02 37.22 23.9w 15VH167 568 C~2lVi 2017 01 02.42780 03 17 10.522 +18 01 35.92 23.9w 15VH167 568 C~2lVi 2017 01 26.34230 03 16 24.833 +17 58 50.73 23.9w 15VH167 568 C~2lVi 2017 01 27.27995 03 16 24.265 +17 58 48.96 24.0w 15VH167 568 C~2lVi 2017 12 13.39064 03 25 06.257 +18 32 18.33 24.0w 15VH167 568 C~2lVi 2017 12 13.42791 03 25 06.076 +18 32 17.65 23.9w 15VH167 568 C~2lVi
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 -0.13 0.00 0.05
2 0.0133 -119.07 0.09 -0.55 -0.03
3 0.0819 -1244.31 -0.02 -1.58 -0.00
4 0.0821 -1248.11 -0.18 -1.54 0.03
5 0.0875 -1368.88 -0.04 -1.58 -0.03
6 0.1662 -3465.74 0.11 0.63 0.02
7 0.1663 -3469.17 0.10 0.69 0.05
8 0.1664 -3472.60 0.09 0.69 0.03
9 0.1749 -3720.25 0.02 1.10 -0.09
10 0.1936 -4272.03 0.00 2.40 -0.01
11 0.1937 -4275.83 0.01 2.47 0.02
12 0.2457 -5745.57 -0.01 7.24 -0.01
13 0.2460 -5755.82 -0.08 7.40 0.08
14 0.3168 -7322.89 0.03 16.59 0.00
15 0.3334 -7576.27 0.01 19.07 -0.06
16 0.3357 -7607.29 0.01 19.52 0.05
17 0.4125 -8016.14 -0.04 32.22 0.01
18 0.4262 -7954.98 -0.00 34.55 0.01
19 1.0019 5791.70 -0.06 66.38 -0.01
20 1.0565 5116.50 0.04 65.58 0.01
21 1.0619 5020.63 0.10 65.49 -0.05
22 1.0783 4700.18 0.24 65.49 -0.09
23 1.0838 4583.90 0.11 65.64 0.01
24 1.0841 4577.83 -0.18 65.69 0.03
25 1.0893 4463.74 0.06 65.63 -0.04
26 1.0895 4459.00 -0.13 65.73 0.03
27 1.1550 2761.31 0.01 67.59 -0.01
28 1.1604 2606.00 -0.08 67.88 0.01
29 1.2969 -1080.40 -0.02 80.66 -0.04
30 1.2995 -1134.12 -0.04 80.98 -0.05
31 1.3081 -1303.55 -0.00 82.20 -0.02
32 1.3218 -1547.11 -0.02 84.10 -0.01
33 1.3873 -2219.48 0.04 93.98 -0.02
34 1.3899 -2227.76 0.03 94.38 -0.02
35 2.2663 5475.72 -0.01 143.71 0.08
36 2.2664 5473.06 -0.04 143.69 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.
15VH167 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.714 42.744 42.683 ecceobj 0.147 0.149 0.146 incobj 0.675 0.675 0.675 qmin 35.761 35.708 35.820 qmax 49.396 49.413 49.356 amean 42.329 42.329 42.329 amin 41.894 41.877 41.884 amax 42.821 42.833 42.832 emean 0.138 0.139 0.137 emin 0.121 0.122 0.119 emax 0.155 0.156 0.153 imean 1.451 1.542 1.491 imin 0.398 0.328 0.488 imax 2.308 2.218 2.405 excite_mean 0.140 0.142 0.140 fracstop 1.000 1.000 1.000 cjmean 3.059 3.058 3.059 libcent 0 182.0 180.1 180.7 libamp 0 96.4 100.3 98.5 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 176.9 179.6 185.8 kozaiamp 179.9 180.0 180.0