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: 15VK169 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 32 observations of 32 # Arc: 2.19y # First observation: 2014/11/17 # Last observation: 2017/01/26 Preliminary a, adot, b, bdot, g, gdot: 0.000066 0.019632 0.000001 0.000236 0.021997 0.000000 # Chi-squared of fit: 8.80 DOF: 58 RMS: 0.09 # Min/Max residuals: -0.22 0.25 # Exact a, adot, b, bdot, g, gdot: 1.408449E-05 1.978387E-02 3.271093E-07 2.401304E-04 2.205947E-02 2.872850E-04 # Covariance matrix: 4.2600E-13 -5.7809E-13 3.8509E-15 -6.5622E-15 -3.0337E-13 -9.2144E-12 -5.7809E-13 1.0755E-12 -8.6557E-15 1.5095E-14 6.3783E-13 2.0746E-11 3.8509E-15 -8.6557E-15 2.3264E-13 -1.5248E-13 -5.6486E-15 -1.8952E-13 -6.5622E-15 1.5095E-14 -1.5248E-13 1.2490E-13 8.8758E-15 3.3463E-13 -3.0337E-13 6.3783E-13 -5.6486E-15 8.8758E-15 5.4076E-13 1.3440E-11 -9.2144E-12 2.0746E-11 -1.8952E-13 3.3463E-13 1.3440E-11 4.5467E-10 # lat0 lon0 xBary yBary zBary JD0 -2.275538 47.146874 -0.128028 -0.038799 -0.980374 2456978.896128 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 164.52871 +/- 0.972 Argument of Peri: 121.16385 +/- 0.972 Long of Asc Node: 119.91538 +/- 0.024 Inclination: 2.33402 +/- 0.000 Eccentricity: 0.05821912 +/- 0.0002 Semi-Major Axis: 43.84158763 +/- 0.0029 Time of Perihelion: 2408512.3274 +/- 286.1 Perihelion: 41.28916888 +/- 0.0109 Aphelion: 46.39400637 +/- 0.0110 Period (y) 290.2937 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.37726692 +/- 0.0010 Ecliptic Y 34.01453403 +/- 0.0011 Ecliptic Z -1.79992589 +/- 0.0001 Ecliptic XDOT -0.00177931 +/- 0.0000 Ecliptic YDOT 0.00169200 +/- 0.0000 Ecliptic ZDOT 0.00002847 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.31156592 +/- 0.0011 Geocenter to KBO 45.33200646 +/- 0.0015 # Hcoef: 8.16
The following table shows the complete astrometric record for 15VK169. 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 (15VK169) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.39535 03 01 23.303 +14 46 14.56 24.7r 15VK169 568 C~2nw1 2014 11 19.30032 03 01 14.827 +14 45 40.01 24.9r 15VK169 568 C~2nw1 2014 11 23.40372 03 00 56.794 +14 44 27.04 24.6r 15VK169 568 C~2nw1 2015 09 12.53366 03 09 54.451 +15 23 37.65 25.2w 15VK169 568 C~2nw1 2015 10 07.47747 03 08 46.362 +15 18 08.70 24.6w 15VK169 568 C~2nw1 2015 10 08.48165 03 08 42.797 +15 17 52.64 25.2w 15VK169 568 C~2nw1 2015 10 08.55151 03 08 42.546 +15 17 51.52 24.7w 15VK169 568 C~2nw1 2015 10 08.56473 03 08 42.502 +15 17 51.34 24.6w 15VK169 568 C~2nw1 2015 11 06.29678 03 06 43.737 +15 09 20.44 24.3r 15VK169 568 C~2nw1 2015 11 06.36009 03 06 43.423 +15 09 19.58 25.4r 15VK169 568 C~2nw1 2015 11 06.43072 03 06 43.126 +15 09 17.89 25.0r 15VK169 568 C~2nw1 2015 11 06.50005 03 06 42.803 +15 09 17.05 24.6r 15VK169 568 C~2nw1 2015 11 07.51946 03 06 38.215 +15 08 57.96 24.6w 15VK169 568 C~2nw1 2015 11 17.28542 03 05 54.223 +15 05 59.03 24.8w 15VK169 568 C~2nw1 2015 11 17.33469 03 05 53.987 +15 05 58.17 24.9w 15VK169 568 C~2nw1 2015 12 06.41351 03 04 32.032 +15 00 38.86 25.0w 15VK169 568 C~2nw1 2015 12 13.34802 03 04 05.297 +14 58 59.88 25.0w 15VK169 568 C~2nw2 2015 12 13.40657 03 04 05.082 +14 58 59.16 24.9w 15VK169 568 C~2nw2 2016 01 01.40134 03 03 05.727 +14 55 35.47 24.9w 15VK169 568 C~2nw2 2016 01 07.34755 03 02 52.248 +14 54 55.53 24.8w 15VK169 568 C~2nw2 2016 02 04.27768 03 02 28.230 +14 54 42.09 25.4w 15VK169 568 C~2nw2 2016 02 10.26747 03 02 32.060 +14 55 17.59 25.3w 15VK169 568 C~2nw2 2016 09 06.61716 03 14 30.003 +15 43 08.49 15VK169 568 C~2nw2 2016 09 26.60468 03 13 47.552 +15 39 33.23 25.5w 15VK169 568 C~2nw2 2016 10 10.41386 03 13 02.344 +15 36 09.29 24.9w 15VK169 568 C~2nw2 2016 10 10.47261 03 13 02.130 +15 36 08.36 25.2w 15VK169 568 C~2nw2 2016 10 27.50838 03 11 53.495 +15 31 16.33 25.0w 15VK169 568 C~2nw2 2016 12 28.40571 03 07 41.417 +15 15 21.55 25.3w 15VK169 568 C~2nw2 2016 12 29.36323 03 07 38.745 +15 15 13.05 25.0w 15VK169 568 C~2nw2 2017 01 01.26044 03 07 31.115 +15 14 49.39 24.9w 15VK169 568 C~2nw2 2017 01 02.37026 03 07 28.333 +15 14 41.07 25.2w 15VK169 568 C~2nw2 2017 01 26.26424 03 06 52.743 +15 13 26.54 25.3w 15VK169 568 C~2nw2
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 0.02 0.00 -0.03
2 0.0052 -127.70 -0.17 1.24 0.01
3 0.0165 -399.25 0.13 4.45 -0.12
4 0.8190 7738.11 0.05 119.46 -0.02
5 0.8873 6699.63 0.01 69.81 -0.02
6 0.8900 6645.57 -0.09 68.37 0.04
7 0.8902 6641.76 -0.03 68.28 0.03
8 0.8903 6641.10 0.03 68.28 0.04
9 0.9689 4846.59 0.06 45.88 -0.14
10 0.9691 4841.98 -0.22 46.30 0.25
11 0.9693 4837.38 0.03 45.85 -0.22
12 0.9695 4832.65 0.06 46.32 0.24
13 0.9723 4763.49 -0.05 46.17 0.06
14 0.9990 4101.52 0.13 48.98 -0.04
15 0.9991 4097.99 -0.03 49.09 0.02
16 1.0514 2868.48 0.02 69.38 -0.14
17 1.0704 2468.79 0.02 81.43 0.00
18 1.0705 2465.59 0.12 81.60 0.05
19 1.1225 1582.59 -0.05 124.53 0.06
20 1.1388 1383.81 0.07 140.49 0.05
21 1.2153 1045.69 -0.22 224.50 0.01
22 1.2317 1108.90 0.10 243.13 -0.07
23 1.8049 11897.62 0.05 180.88 0.07
24 1.8596 11247.38 -0.05 136.17 -0.04
25 1.8974 10561.69 -0.07 113.63 0.06
26 1.8975 10558.46 0.01 113.56 0.05
27 1.9442 9522.24 0.10 97.57 -0.08
28 2.1136 5749.02 0.06 164.95 -0.02
29 2.1163 5709.47 -0.16 167.32 -0.03
30 2.1242 5596.70 0.05 174.72 -0.02
31 2.1272 5555.67 -0.01 177.71 0.04
32 2.1927 5039.49 0.03 246.92 -0.11
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.
15VK169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.161 44.170 44.151 ecceobj 0.053 0.053 0.053 incobj 2.335 2.335 2.335 qmin 40.699 40.681 40.713 qmax 47.204 47.227 47.204 amean 43.861 43.870 43.852 amin 43.519 43.527 43.507 amax 44.222 44.238 44.204 emean 0.052 0.052 0.052 emin 0.035 0.035 0.035 emax 0.068 0.068 0.068 imean 1.345 1.343 1.348 imin 0.613 0.613 0.611 imax 1.991 1.988 1.995 excite_mean 0.058 0.058 0.058 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 174.0 173.8 174.8 kozaiamp 180.0 179.9 179.9