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: 15VG167 # Created Fri Nov 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000078 0.027056 -0.000010 0.002170 0.026265 0.000000 # Chi-squared of fit: 3.11 DOF: 60 RMS: 0.05 # Min/Max residuals: -0.18 0.13 # Exact a, adot, b, bdot, g, gdot: 1.649948E-05 2.659615E-02 9.162710E-07 2.124072E-03 2.602488E-02 -5.931090E-03 # Covariance matrix: 1.7473E-13 -2.3653E-14 -4.1610E-16 5.2916E-15 1.1649E-13 1.3043E-12 -2.3653E-14 3.2616E-13 -6.2400E-15 2.9499E-14 1.9083E-13 7.0853E-12 -4.1610E-16 -6.2400E-15 1.0384E-13 -7.4847E-14 -3.9049E-15 -1.9108E-13 5.2916E-15 2.9499E-14 -7.4847E-14 9.4497E-14 2.2631E-14 8.9161E-13 1.1649E-13 1.9083E-13 -3.9049E-15 2.2631E-14 2.4963E-13 5.4775E-12 1.3043E-12 7.0853E-12 -1.9108E-13 8.9161E-13 5.4775E-12 2.1403E-10 # lat0 lon0 xBary yBary zBary JD0 -1.345485 52.900834 0.939735 -0.008610 -0.372903 2457273.121609 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 302.90032 +/- 0.035 Argument of Peri: 69.28921 +/- 0.017 Long of Asc Node: 67.75173 +/- 0.002 Inclination: 4.75512 +/- 0.001 Eccentricity: 0.25580940 +/- 0.0006 Semi-Major Axis: 42.34279009 +/- 0.0130 Time of Perihelion: 2473232.9223 +/- 6.3 Perihelion: 31.51110645 +/- 0.0257 Aphelion: 53.17447374 +/- 0.0289 Period (y) 275.5354 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 24.14172977 +/- 0.0005 Ecliptic Y 30.36927348 +/- 0.0006 Ecliptic Z -0.90220828 +/- 0.0000 Ecliptic XDOT -0.00260659 +/- 0.0000 Ecliptic YDOT 0.00118795 +/- 0.0000 Ecliptic ZDOT 0.00023810 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.80631222 +/- 0.0005 Geocenter to KBO 38.42476786 +/- 0.0007 # Hcoef: 7.99
The following table shows the complete astrometric record for 15VG167. 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 (15VG167) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62082 03 23 25.897 +17 11 43.86 24.1w 15VG167 568 C~2lVi 2015 09 12.48448 03 23 18.266 +17 11 11.59 24.1w 15VG167 568 C~2lVi 2015 10 07.52687 03 22 04.776 +17 06 25.30 23.7w 15VG167 568 C~2lVi 2015 10 07.58621 03 22 04.535 +17 06 24.43 23.9w 15VG167 568 C~2lVi 2015 10 09.56611 03 21 56.573 +17 05 54.36 24.3w 15VG167 568 C~2lVi 2015 11 06.33883 03 19 42.742 +16 57 40.21 24.0r 15VG167 568 C~2lVi 2015 11 06.40946 03 19 42.372 +16 57 39.01 24.1r 15VG167 568 C~2lVi 2015 11 06.47899 03 19 41.988 +16 57 37.60 23.3r 15VG167 568 C~2lVi 2015 11 07.49597 03 19 36.567 +16 57 18.00 24.1w 15VG167 568 C~2lVi 2015 11 17.47779 03 18 42.873 +16 54 05.14 24.0w 15VG167 568 C~2lVi 2015 11 17.56554 03 18 42.399 +16 54 03.27 23.8w 15VG167 568 C~2lVi 2015 12 06.34344 03 17 04.542 +16 48 20.80 24.3w 15VG167 568 C~2lVi 2015 12 06.48092 03 17 03.851 +16 48 18.53 23.7w 15VG167 568 C~2lVi 2015 12 31.36453 03 15 19.779 +16 42 38.35 24.6w 15VG167 568 C~2lVi 2016 02 05.29346 03 14 24.237 +16 40 57.43 24.0w 15VG167 568 C~2lVi 2016 02 11.24684 03 14 28.143 +16 41 32.75 24.0w 15VG167 568 C~2lVi 2016 09 07.59099 03 29 30.680 +17 41 30.56 23.9w 15VG167 568 C~2lVi 2016 09 27.52301 03 28 46.277 +17 38 41.85 23.9w 15VG167 568 C~2lVi 2016 10 05.50531 03 28 18.547 +17 37 00.63 24.5w 15VG167 568 C~2lVi 2016 10 07.50982 03 28 10.801 +17 36 32.67 24.0w 15VG167 568 C~2lVi 2016 10 07.60551 03 28 10.408 +17 36 31.20 24.4w 15VG167 568 C~2lVi 2016 10 09.51019 03 28 02.780 +17 36 03.75 24.3w 15VG167 568 C~2lVi 2016 10 09.58259 03 28 02.477 +17 36 02.55 23.9w 15VG167 568 C~2lVi 2016 11 02.49681 03 26 08.620 +17 29 19.00 23.9w 15VG167 568 C~2lVi 2016 11 04.47292 03 25 58.155 +17 28 42.48 24.0w 15VG167 568 C~2lVi 2016 12 28.46047 03 21 31.089 +17 13 52.67 24.7w 15VG167 568 C~2lVi 2016 12 29.39076 03 21 27.765 +17 13 42.61 23.9w 15VG167 568 C~2lVi 2017 01 27.29772 03 20 24.436 +17 11 10.54 23.9w 15VG167 568 C~2lVi 2017 01 27.30287 03 20 24.430 +17 11 10.45 23.8w 15VG167 568 C~2lVi 2017 09 16.60340 03 35 29.126 +18 10 08.95 24.2w 15VG167 568 C~2lVi 2017 09 23.54254 03 35 12.953 +18 09 11.41 23.7w 15VG167 568 C~2lVi 2017 12 13.37172 03 28 48.301 +17 47 50.37 24.5w 15VG167 568 C~2lVi 2017 12 13.40930 03 28 48.110 +17 47 49.74 24.2w 15VG167 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 -0.07 0.00 0.08
2 0.0133 -113.95 -0.07 -3.76 0.03
3 0.0819 -1205.47 -0.01 -15.27 -0.01
4 0.0820 -1209.03 -0.01 -15.24 0.02
5 0.0875 -1327.08 0.02 -15.46 0.03
6 0.1635 -3309.35 -0.07 -5.05 -0.07
7 0.1637 -3314.79 0.13 -4.85 0.03
8 0.1639 -3320.48 0.01 -4.80 -0.01
9 0.1667 -3400.70 -0.01 -3.85 0.01
10 0.1940 -4195.18 0.01 7.34 -0.00
11 0.1942 -4202.23 0.04 7.28 -0.18
12 0.2456 -5648.67 0.03 38.87 -0.00
13 0.2460 -5658.85 0.01 39.25 0.07
14 0.3142 -7192.16 -0.05 99.57 -0.07
15 0.4125 -7989.85 -0.06 211.09 0.10
16 0.4288 -7926.33 0.04 230.47 0.01
17 1.0020 5501.11 0.03 440.19 0.06
18 1.0565 4844.09 0.01 431.36 -0.06
19 1.0784 4434.75 -0.01 430.21 -0.05
20 1.0839 4320.48 0.03 430.24 0.02
21 1.0841 4314.67 -0.09 430.20 -0.05
22 1.0894 4202.16 0.04 430.33 0.04
23 1.0896 4197.66 -0.00 430.23 -0.08
24 1.1550 2519.57 0.02 440.59 0.02
25 1.1604 2365.45 0.06 442.31 0.07
26 1.3083 -1559.27 -0.05 539.78 0.07
27 1.3108 -1607.89 -0.05 542.13 -0.03
28 1.3899 -2524.25 0.09 625.81 0.02
29 1.3900 -2524.35 0.04 625.75 -0.06
30 2.0260 10888.19 -0.01 883.66 -0.01
31 2.0450 10649.96 0.08 882.08 0.00
32 2.2663 5006.29 -0.01 956.35 0.03
33 2.2664 5003.49 -0.12 956.40 -0.00
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.
15VG167 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.676 42.706 42.645 ecceobj 0.253 0.254 0.251 incobj 4.743 4.743 4.743 qmin 31.068 31.040 31.091 qmax 54.104 54.130 54.034 amean 42.326 42.326 42.326 amin 41.939 41.878 41.954 amax 42.809 42.837 42.788 emean 0.252 0.252 0.251 emin 0.240 0.239 0.240 emax 0.265 0.265 0.264 imean 3.565 3.786 3.507 imin 3.252 3.236 3.255 imax 3.855 4.229 3.754 excite_mean 0.260 0.260 0.259 fracstop 1.000 1.000 1.000 cjmean 3.002 3.001 3.002 libcent 0 179.4 180.4 180.2 libamp 0 37.3 54.9 19.7 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 162.2 101.5 207.0 kozaiamp 180.0 180.0 180.0