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: 15VY164 # Created Sun Dec 22 02:10:32 2024 # Orbit generated from Bernstein formalism # Fitting 31 observations of 31 # Arc: 2.32y # First observation: 2015/08/20 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000251 0.038229 -0.000006 -0.000339 0.031537 0.000000 # Chi-squared of fit: 15.17 DOF: 56 RMS: 0.12 # Min/Max residuals: -0.36 0.32 # Exact a, adot, b, bdot, g, gdot: 2.043265E-05 3.747376E-02 -2.929588E-07 -3.342730E-04 3.115703E-02 2.286445E-03 # Covariance matrix: 2.1964E-13 9.3261E-15 2.4995E-15 -1.9559E-15 1.5990E-13 1.7605E-12 9.3261E-15 7.0832E-13 7.3147E-15 -1.6508E-14 3.4762E-13 1.5186E-11 2.4995E-15 7.3147E-15 9.2994E-14 -8.6755E-14 5.7281E-15 1.9211E-13 -1.9559E-15 -1.6508E-14 -8.6755E-14 1.5884E-13 -9.6023E-15 -4.6325E-13 1.5990E-13 3.4762E-13 5.7281E-15 -9.6023E-15 3.0932E-13 8.7985E-12 1.7605E-12 1.5186E-11 1.9211E-13 -4.6325E-13 8.7985E-12 4.2647E-10 # lat0 lon0 xBary yBary zBary JD0 -1.165754 52.925949 1.011821 -0.001391 -0.074915 2457255.076589 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 6.94261 +/- 0.132 Argument of Peri: 234.48298 +/- 0.199 Long of Asc Node: 166.39454 +/- 0.025 Inclination: 1.28547 +/- 0.000 Eccentricity: 0.18396293 +/- 0.0002 Semi-Major Axis: 39.34103016 +/- 0.0039 Time of Perihelion: 2455512.3511 +/- 33.1 Perihelion: 32.10373882 +/- 0.0070 Aphelion: 46.57832150 +/- 0.0078 Period (y) 246.7612 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 20.19305109 +/- 0.0004 Ecliptic Y 25.05199798 +/- 0.0005 Ecliptic Z -0.65296578 +/- 0.0000 Ecliptic XDOT -0.00250853 +/- 0.0000 Ecliptic YDOT 0.00213855 +/- 0.0000 Ecliptic ZDOT -0.00003340 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.18366479 +/- 0.0004 Geocenter to KBO 32.09548969 +/- 0.0006 # Hcoef: 9.85
The following table shows the complete astrometric record for 15VY164. 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 (15VY164) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.57580 03 23 20.657 +17 22 32.85 25.5w 15VY164 568 C~2lVY 2015 09 07.61675 03 23 15.941 +17 21 31.35 25.6w 15VY164 568 C~2lVY 2015 10 07.52101 03 21 45.053 +17 14 49.45 25.1w 15VY164 568 C~2lVY 2015 10 07.58040 03 21 44.779 +17 14 48.52 24.8w 15VY164 568 C~2lVZ 2015 10 09.56029 03 21 35.610 +17 14 10.66 25.0w 15VY164 568 C~2lVZ 2015 11 06.33360 03 19 00.426 +17 03 52.70 24.5r 15VY164 568 C~2lVZ 2015 11 06.39716 03 19 00.037 +17 03 50.77 24.3r 15VY164 568 C~2lVZ 2015 11 06.40423 03 18 59.978 +17 03 50.89 24.4r 15VY164 568 C~2lVZ 2015 11 06.47375 03 18 59.547 +17 03 49.07 25.1r 15VY164 568 C~2lVZ 2015 11 07.49015 03 18 53.249 +17 03 24.59 25.1w 15VY164 568 C~2lVZ 2015 11 17.47136 03 17 50.797 +16 59 22.86 25.2w 15VY164 568 C~2lVZ 2015 11 17.47779 03 17 50.754 +16 59 22.56 25.0w 15VY164 568 C~2lVZ 2015 11 17.56554 03 17 50.213 +16 59 20.84 24.9w 15VY164 568 C~2lVZ 2015 12 06.33759 03 15 56.845 +16 52 09.64 24.9w 15VY164 568 C~2lVZ 2015 12 06.34344 03 15 56.812 +16 52 09.44 25.1w 15VY164 568 C~2lVZ 2015 12 06.48092 03 15 56.020 +16 52 06.28 24.9w 15VY164 568 C~2lVZ 2015 12 31.36453 03 13 57.368 +16 44 53.93 25.0w 15VY164 568 C~2lVZ 2016 01 01.34872 03 13 53.800 +16 44 41.45 25.5w 15VY164 568 C~2lVZ 2016 01 07.41130 03 13 34.151 +16 43 35.02 24.8w 15VY164 568 C~2lVZ 2016 01 07.42868 03 13 34.087 +16 43 34.69 25.2w 15VY164 568 C~2lVZ 2016 01 08.25624 03 13 31.770 +16 43 26.84 25.7w 15VY164 568 C~2lVZ 2016 02 05.28768 03 13 01.210 +16 42 23.66 25.7w 15VY164 568 C~2lVZ 2016 02 10.30807 03 13 06.351 +16 42 54.87 25.4w 15VY164 568 C~2lVZ 2016 09 07.60255 03 32 03.684 +17 52 10.70 15VY164 568 C~2lVZ 2016 09 27.53124 03 31 16.441 +17 48 39.61 24.8w 15VY164 568 C~2lVZ 2016 11 02.47368 03 28 17.181 +17 37 07.36 25.4w 15VY164 568 C~2lVZ 2016 11 04.44969 03 28 05.109 +17 36 22.52 25.5w 15VY164 568 C~2lVZ 2016 12 28.46047 03 22 56.811 +17 17 58.38 25.6w 15VY164 568 C~2lVZ 2016 12 29.39076 03 22 53.023 +17 17 45.72 25.0w 15VY164 568 C~2lVZ 2017 01 27.29772 03 21 43.314 +17 14 20.18 25.1w 15VY164 568 C~2lVZ 2017 12 13.40930 03 33 06.193 +17 53 10.44 25.2w 15VY164 568 C~2lVZ
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 -0.29 0.00 0.03
2 0.0494 -80.80 -0.15 -42.56 0.08
3 0.1313 -1441.74 0.06 -103.04 -0.12
4 0.1314 -1445.78 0.14 -102.94 0.05
5 0.1369 -1582.44 -0.05 -106.29 -0.10
6 0.2129 -3891.18 0.03 -136.46 0.19
7 0.2131 -3897.07 0.07 -136.89 -0.25
8 0.2131 -3897.85 -0.06 -136.56 0.09
9 0.2133 -3904.30 0.01 -136.73 -0.08
10 0.2161 -3997.90 0.07 -137.20 -0.02
11 0.2434 -4926.11 0.05 -140.16 0.02
12 0.2434 -4926.79 -0.02 -140.29 -0.11
13 0.2436 -4934.73 0.32 -139.95 0.24
14 0.2950 -6619.06 0.14 -134.59 0.00
15 0.2951 -6619.57 0.13 -134.66 -0.08
16 0.2954 -6631.38 0.11 -134.75 -0.30
17 0.3636 -8391.23 0.16 -106.21 0.06
18 0.3663 -8444.05 -0.04 -104.77 -0.02
19 0.3828 -8734.33 -0.15 -94.58 0.22
20 0.3829 -8735.31 -0.36 -94.66 0.12
21 0.3852 -8769.55 0.00 -93.46 -0.08
22 0.4619 -9210.54 -0.11 -38.58 -0.09
23 0.4757 -9130.90 -0.11 -27.96 0.03
24 1.0514 7688.32 0.05 -113.97 -0.03
25 1.1060 6981.89 -0.01 -156.56 0.11
26 1.2044 4327.02 -0.05 -205.47 -0.01
27 1.2098 4148.62 -0.03 -206.63 0.12
28 1.3577 -399.50 0.04 -179.77 0.03
29 1.3602 -455.19 -0.01 -178.36 0.04
30 1.4393 -1473.26 0.08 -125.04 -0.06
31 2.3158 8570.40 -0.03 -269.76 -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.
15VY164 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.768 39.793 39.744 ecceobj 0.193 0.193 0.192 incobj 1.282 1.282 1.282 qmin 31.637 31.630 31.645 qmax 47.478 47.683 47.719 amean 39.454 39.456 39.456 amin 39.070 39.092 39.071 amax 39.800 39.864 39.896 emean 0.180 0.181 0.180 emin 0.167 0.166 0.166 emax 0.194 0.196 0.196 imean 1.725 1.718 1.735 imin 1.346 1.349 1.345 imax 2.199 2.197 2.208 excite_mean 0.183 0.183 0.183 fracstop 1.000 1.000 1.000 cjmean 3.014 3.014 3.014 libcent 0 180.0 180.0 179.7 libamp 0 47.4 41.1 56.2 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 179.2 177.9 181.8 kozaiamp 180.0 180.0 180.0