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: 15VD169 # Created Fri May 3 01:17:45 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 32 observations of 32 # Arc: 7.04y # First observation: 2014/11/17 # Last observation: 2021/12/01 # Chi-squared of fit: 10.19 DOF: 58 RMS: 0.10 # Min/Max residuals: -0.29 0.38 # Exact a, adot, b, bdot, g, gdot: 1.666873E-05 2.572168E-02 2.005539E-07 -4.323407E-04 2.534578E-02 -4.309447E-04 # Covariance matrix: 2.2290E-13 -1.9166E-13 -2.2982E-15 2.8789E-15 -3.9837E-14 -9.0357E-13 -1.9166E-13 2.2117E-13 2.9800E-15 -3.5502E-15 2.8908E-14 1.1133E-12 -2.2982E-15 2.9800E-15 8.3033E-14 -2.2109E-14 -9.2827E-16 1.6314E-14 2.8789E-15 -3.5502E-15 -2.2109E-14 1.3261E-14 -3.2683E-16 -1.9050E-14 -3.9837E-14 2.8908E-14 -9.2827E-16 -3.2683E-16 1.6924E-13 1.1025E-13 -9.0357E-13 1.1133E-12 1.6314E-14 -1.9050E-14 1.1025E-13 5.9719E-12 # lat0 lon0 xBary yBary zBary JD0 -2.082231 46.364554 -0.139783 -0.035442 -0.978909 2456978.802558 # Heliocentric elements and errors Epoch: 2456978.5000 = 2014/11/17 Mean Anomaly: 345.16122 +/- 0.093 Argument of Peri: 261.42123 +/- 0.105 Long of Asc Node: 161.80980 +/- 0.006 Inclination: 2.24614 +/- 0.000 Eccentricity: 0.05738963 +/- 0.0000 Semi-Major Axis: 42.79653227 +/- 0.0032 Time of Perihelion: 2461193.5906 +/- 28.7 Perihelion: 40.34045528 +/- 0.0036 Aphelion: 45.25260927 +/- 0.0039 Period (y) 279.9762 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.77980631 +/- 0.0004 Ecliptic Y 29.34294377 +/- 0.0005 Ecliptic Z -1.43353200 +/- 0.0000 Ecliptic XDOT -0.00204844 +/- 0.0000 Ecliptic YDOT 0.00187746 +/- 0.0000 Ecliptic ZDOT -0.00004488 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.43243496 +/- 0.0005 Geocenter to KBO 39.45435010 +/- 0.0006 # Hcoef: 7.89
The following table shows the complete astrometric record for 15VD169. 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 (15VD169) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.30178 02 58 03.629 +14 44 09.16 24.0r 15VD169 568 C~2nw0 2014 11 17.41069 02 58 03.079 +14 44 06.95 24.0r 15VD169 568 C~2nw0 2014 11 17.52479 02 58 02.519 +14 44 04.55 23.7r 15VD169 568 C~2nw0 2014 11 19.31948 02 57 53.614 +14 43 26.86 24.0r 15VD169 568 C~2nw0 2014 11 23.42278 02 57 33.452 +14 42 02.52 23.8r 15VD169 568 C~2nw0 2015 09 07.53691 03 08 36.207 +15 28 46.10 24.3w 15VD169 568 C~2nw0 2015 09 12.53366 03 08 27.186 +15 27 53.73 24.2w 15VD169 568 C~2nw0 2015 10 07.47747 03 07 11.289 +15 21 37.84 24.2w 15VD169 568 C~2nw0 2015 10 08.48165 03 07 07.299 +15 21 19.39 24.0w 15VD169 568 C~2nw0 2015 11 06.29678 03 04 53.530 +15 11 30.13 23.8r 15VD169 568 C~2nw0 2015 11 06.36009 03 04 53.200 +15 11 28.84 23.7r 15VD169 568 C~2nw0 2015 11 06.43072 03 04 52.846 +15 11 27.30 23.7r 15VD169 568 C~2nw1 2015 11 06.50005 03 04 52.492 +15 11 25.80 23.9r 15VD169 568 C~2nw1 2015 11 17.28542 03 03 57.953 +15 07 37.59 24.1w 15VD169 568 C~2nw1 2015 11 17.33469 03 03 57.703 +15 07 36.58 24.0w 15VD169 568 C~2nw1 2015 12 06.41351 03 02 26.119 +15 01 28.16 24.0w 15VD169 568 C~2nw1 2015 12 13.34802 03 01 56.430 +14 59 33.75 24.1w 15VD169 568 C~2nw1 2015 12 13.40657 03 01 56.193 +14 59 32.87 24.1w 15VD169 568 C~2nw1 2016 01 07.34755 03 00 36.589 +14 54 52.39 24.3w 15VD169 568 C~2nw1 2016 02 04.27768 03 00 13.896 +14 54 38.79 24.2w 15VD169 568 C~2nw1 2016 02 10.26747 03 00 19.299 +14 55 20.10 24.2w 15VD169 568 C~2nw1 2016 09 06.61716 03 14 26.845 +15 50 49.39 15VD169 568 C~2nw1 2016 09 26.60468 03 13 40.427 +15 46 46.76 24.1w 15VD169 568 C~2nw1 2016 10 10.41386 03 12 50.067 +15 42 54.70 24.2w 15VD169 568 C~2nw1 2016 10 10.47261 03 12 49.820 +15 42 53.60 24.2w 15VD169 568 C~2nw1 2016 10 27.50838 03 11 32.858 +15 37 19.88 24.2w 15VD169 568 C~2nw1 2016 11 03.53341 03 10 58.090 +15 34 54.38 24.2w 15VD169 568 C~2nw1 2016 12 28.40571 03 06 50.670 +15 19 01.78 15VD169 568 C~2nw1 2017 01 26.26424 03 05 58.786 +15 16 49.41 24.2w 15VD169 568 C~2nw1 2021 12 01.271560 03 38 30.061 +17 11 10.37 23.8G 15VD169 G37 C~5J85 2021 12 01.321070 03 38 29.842 +17 11 09.77 15VD169 G37 C~5J85 2021 12 01.396770 03 38 29.414 +17 11 08.73 15VD169 G37 C~5J85
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 -0.10 0.00 -0.13
2 0.0003 0.00 -0.07 0.00 -0.05
3 0.0006 0.00 0.20 0.00 -0.03
4 0.0055 0.00 0.08 0.00 -0.07
5 0.0168 0.00 -0.15 0.00 0.01
6 0.8056 0.00 -0.06 0.00 0.03
7 0.8193 0.00 -0.04 0.00 0.01
8 0.8875 0.00 0.03 0.00 0.02
9 0.8903 0.00 0.02 0.00 0.03
10 0.9692 0.00 0.04 0.00 0.08
11 0.9694 0.00 -0.05 0.00 0.13
12 0.9696 0.00 0.07 0.00 0.09
13 0.9697 0.00 0.10 0.00 0.08
14 0.9993 0.00 -0.03 0.00 0.03
15 0.9994 0.00 -0.01 0.00 0.04
16 1.0516 0.00 0.08 0.00 0.04
17 1.0706 0.00 -0.04 0.00 0.01
18 1.0708 0.00 0.07 0.00 0.04
19 1.1391 0.00 0.01 0.00 0.08
20 1.2155 0.00 -0.02 0.00 0.02
21 1.2319 0.00 0.01 0.00 -0.08
22 1.8051 0.00 -0.04 0.00 0.02
23 1.8598 0.00 -0.01 0.00 -0.02
24 1.8976 0.00 0.01 0.00 0.02
25 1.8978 0.00 -0.02 0.00 -0.02
26 1.9444 0.00 0.05 0.00 -0.05
27 1.9637 0.00 0.02 0.00 0.00
28 2.1139 0.00 -0.09 0.00 -0.29
29 2.1929 0.00 0.06 0.00 -0.02
30 7.0389 0.00 -0.16 0.00 -0.21
31 7.0391 0.00 0.38 0.00 0.01
32 7.0393 0.00 -0.22 0.00 0.23
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.
15VD169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.134 43.134 43.134 ecceobj 0.063 0.063 0.063 incobj 2.241 2.241 2.241 qmin 38.709 38.707 38.695 qmax 47.146 47.146 47.138 amean 42.791 42.791 42.791 amin 42.447 42.448 42.444 amax 43.166 43.155 43.155 emean 0.069 0.069 0.069 emin 0.046 0.047 0.046 emax 0.093 0.093 0.093 imean 3.074 3.074 3.074 imin 1.814 1.814 1.813 imax 4.182 4.182 4.182 excite_mean 0.088 0.088 0.088 fracstop 1.000 1.000 1.000 cjmean 3.078 3.078 3.078 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 184.3 184.4 184.3 kozaiamp 180.0 180.0 180.0