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: 15VY167 # Created Fri Nov 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 2.27y # First observation: 2015/09/07 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000148 0.021295 -0.000002 0.014891 0.025837 0.000000 # Chi-squared of fit: 9.01 DOF: 54 RMS: 0.10 # Min/Max residuals: -0.28 0.25 # Exact a, adot, b, bdot, g, gdot: 1.312203E-05 2.111769E-02 8.488872E-06 1.477957E-02 2.579682E-02 8.506251E-04 # Covariance matrix: 2.3073E-13 -1.7866E-14 -1.6705E-14 7.8966E-14 1.7692E-13 2.8713E-12 -1.7866E-14 2.0843E-13 -3.0068E-14 1.3787E-13 1.2656E-13 4.9782E-12 -1.6705E-14 -3.0068E-14 1.1363E-13 -1.3294E-13 -3.8775E-14 -1.8374E-12 7.8966E-14 1.3787E-13 -1.3294E-13 3.5656E-13 1.8021E-13 8.3982E-12 1.7692E-13 1.2656E-13 -3.8775E-14 1.8021E-13 2.7164E-13 6.5273E-12 2.8713E-12 4.9782E-12 -1.8374E-12 8.3982E-12 6.5273E-12 3.0302E-10 # lat0 lon0 xBary yBary zBary JD0 -0.972866 51.381117 0.929424 -0.006608 -0.397930 2457273.133899 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 130.30039 +/- 1.740 Argument of Peri: 226.69796 +/- 1.739 Long of Asc Node: 51.40068 +/- 0.000 Inclination: 34.98869 +/- 0.001 Eccentricity: 0.01520741 +/- 0.0005 Semi-Major Axis: 38.78391749 +/- 0.0024 Time of Perihelion: 2425339.0124 +/- 426.5 Perihelion: 38.19411453 +/- 0.0190 Aphelion: 39.37372045 +/- 0.0190 Period (y) 241.5381 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.16145310 +/- 0.0005 Ecliptic Y 30.01343344 +/- 0.0006 Ecliptic Z -0.65784123 +/- 0.0000 Ecliptic XDOT -0.00168003 +/- 0.0000 Ecliptic YDOT 0.00148376 +/- 0.0000 Ecliptic ZDOT 0.00156687 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.17062247 +/- 0.0006 Geocenter to KBO 38.76446069 +/- 0.0008 # Hcoef: 9.16
The following table shows the complete astrometric record for 15VY167. 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 (15VY167) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.63311 03 16 52.958 +17 10 03.09 24.5w 15VY167 568 C~2lVk 2015 09 12.49674 03 16 43.041 +17 09 59.90 25.4w 15VY167 568 C~2lVk 2015 10 07.54436 03 15 18.686 +17 07 41.86 25.1w 15VY167 568 C~2lVk 2015 10 07.60373 03 15 18.423 +17 07 41.19 25.7w 15VY167 568 C~2lVk 2015 10 09.58362 03 15 09.683 +17 07 22.93 24.8w 15VY167 568 C~2lVk 2015 11 07.35377 03 12 40.803 +17 01 37.01 24.8r 15VY167 568 C~2lVk 2015 11 07.39585 03 12 40.568 +17 01 36.52 25.1r 15VY167 568 C~2lVk 2015 11 07.43803 03 12 40.326 +17 01 35.76 24.8r 15VY167 568 C~2lVk 2015 11 10.52298 03 12 22.908 +17 00 54.05 25.0w 15VY167 568 C~2lVk 2015 11 17.37547 03 11 44.214 +16 59 21.32 25.3w 15VY167 568 C~2lVk 2015 11 17.42215 03 11 43.941 +16 59 20.74 25.6w 15VY167 568 C~2lVk 2015 12 06.37850 03 10 01.006 +16 55 23.29 24.8w 15VY167 568 C~2lVk 2015 12 13.31287 03 09 26.799 +16 54 11.20 24.9w 15VY167 568 C~2lVk 2015 12 13.37141 03 09 26.503 +16 54 10.37 24.9w 15VY167 568 C~2lVk 2016 01 01.36607 03 08 09.056 +16 51 59.92 25.0w 15VY167 568 C~2lVk 2016 01 07.31283 03 07 50.832 +16 51 43.72 26.6w 15VY167 568 C~2lVk 2016 02 04.28927 03 07 12.108 +16 53 37.20 25.0w 15VY167 568 C~2lVk 2016 02 10.27908 03 07 14.566 +16 54 44.70 25.6w 15VY167 568 C~2lVk 2016 09 06.61138 03 20 52.517 +18 17 43.99 15VY167 568 C~2lVk 2016 09 26.60062 03 19 59.763 +18 17 15.94 24.9w 15VY167 568 C~2lVk 2016 11 02.53154 03 17 04.764 +18 11 32.39 25.0w 15VY167 568 C~2lVk 2016 11 02.53733 03 17 04.719 +18 11 32.25 25.0w 15VY167 568 C~2lVk 2016 11 04.40663 03 16 54.271 +18 11 08.54 25.5w 15VY167 568 C~2lVk 2016 11 04.41248 03 16 54.234 +18 11 08.47 25.6w 15VY167 568 C~2lVl 2016 12 24.30698 03 12 33.372 +18 01 30.84 25.4w 15VY167 568 C~2lVl 2017 01 02.38784 03 12 00.026 +18 00 37.31 25.8w 15VY167 568 C~2lVl 2017 01 02.40920 03 11 59.948 +18 00 37.33 26.9w 15VY167 568 C~2lVl 2017 01 26.29981 03 11 09.160 +18 00 37.26 25.1w 15VY167 568 C~2lVl 2017 09 22.59291 03 24 16.955 +19 25 15.75 25.4w 15VY167 568 C~2lVl 2017 12 16.36391 03 17 10.107 +19 11 20.19 15VY167 568 C~2lVl
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 -0.04 0.00 0.12
2 0.0133 -138.07 -0.05 33.87 0.08
3 0.0819 -1341.31 -0.01 216.09 0.04
4 0.0821 -1345.12 -0.04 216.43 -0.08
5 0.0875 -1470.82 0.05 231.62 0.10
6 0.1662 -3621.64 0.07 460.51 -0.09
7 0.1664 -3625.02 0.16 460.93 -0.04
8 0.1665 -3628.57 0.10 461.12 -0.22
9 0.1749 -3880.59 -0.19 487.18 0.00
10 0.1937 -4440.55 0.06 545.34 0.06
11 0.1938 -4444.48 -0.00 545.83 0.13
12 0.2457 -5932.08 0.06 711.85 -0.00
13 0.2647 -6424.76 0.09 774.36 0.06
14 0.2649 -6429.08 -0.16 774.70 -0.15
15 0.3169 -7535.97 0.02 949.20 0.04
16 0.3331 -7792.55 0.14 1004.50 0.12
17 0.4097 -8297.54 -0.28 1264.82 -0.05
18 0.4261 -8245.16 -0.09 1320.23 -0.03
19 0.9993 4353.24 -0.12 3044.16 -0.11
20 1.0540 3619.31 -0.10 3208.80 -0.04
21 1.1551 1121.24 0.25 3519.25 -0.02
22 1.1551 1120.58 0.06 3519.28 -0.04
23 1.1602 970.62 0.01 3535.05 -0.06
24 1.1602 970.09 -0.04 3535.12 -0.05
25 1.2968 -2771.06 0.08 3954.69 -0.04
26 1.3217 -3244.05 0.03 4029.57 0.02
27 1.3218 -3245.11 -0.03 4029.88 0.16
28 1.3872 -3943.79 0.05 4223.19 0.03
29 2.0423 8189.65 -0.01 6236.82 -0.04
30 2.2744 2126.46 -0.08 6966.93 0.10
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.
15VY167 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 39.084 39.094 39.075 ecceobj 0.016 0.017 0.016 incobj 34.862 34.862 34.862 qmin 37.651 37.642 37.712 qmax 40.190 40.227 40.140 amean 38.853 38.868 38.844 amin 38.580 38.585 38.567 amax 39.137 39.158 39.125 emean 0.017 0.017 0.016 emin 0.008 0.008 0.008 emax 0.027 0.027 0.026 imean 33.892 33.894 33.891 imin 33.557 33.561 33.560 imax 34.223 34.232 34.225 excite_mean 0.558 0.558 0.558 fracstop 1.000 1.000 1.000 cjmean 2.661 2.661 2.661 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 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 185.2 188.7 184.2 kozaiamp 179.9 180.0 180.0