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: 15VL169 # Created Wed Dec 25 02:10:31 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 35 observations of 35 # Arc: 6.31y # First observation: 2015/08/11 # Last observation: 2021/12/01 # Chi-squared of fit: 13.47 DOF: 64 RMS: 0.11 # Min/Max residuals: -0.39 0.36 # Exact a, adot, b, bdot, g, gdot: 1.418693E-05 1.898279E-02 1.944073E-06 2.211647E-03 2.134050E-02 -1.437411E-03 # Covariance matrix: 1.4563E-13 -3.4542E-14 4.6995E-15 -4.0097E-15 8.3564E-14 -2.8859E-13 -3.4542E-14 2.2134E-13 -1.0124E-14 2.8016E-14 1.1408E-13 2.0542E-12 4.6995E-15 -1.0124E-14 5.8639E-14 -1.7091E-14 -1.4397E-15 -1.0476E-13 -4.0097E-15 2.8016E-14 -1.7091E-14 1.7799E-14 1.3819E-14 2.7927E-13 8.3564E-14 1.1408E-13 -1.4397E-15 1.3819E-14 1.6549E-13 1.0192E-12 -2.8859E-13 2.0542E-12 -1.0476E-13 2.7927E-13 1.0192E-12 2.0470E-11 # lat0 lon0 xBary yBary zBary JD0 -2.576440 49.593127 1.015718 0.000934 0.017915 2457246.131409 # Heliocentric elements and errors Epoch: 2457246.5000 = 2015/08/12 Mean Anomaly: 251.44765 +/- 0.057 Argument of Peri: 98.40009 +/- 0.052 Long of Asc Node: 69.57570 +/- 0.001 Inclination: 7.08695 +/- 0.000 Eccentricity: 0.10840636 +/- 0.0002 Semi-Major Axis: 44.85497198 +/- 0.0029 Time of Perihelion: 2490333.0176 +/- 19.0 Perihelion: 39.99240772 +/- 0.0097 Aphelion: 49.71753625 +/- 0.0099 Period (y) 300.4167 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.10177076 +/- 0.0006 Ecliptic Y 34.97332330 +/- 0.0007 Ecliptic Z -2.10630866 +/- 0.0000 Ecliptic XDOT -0.00196765 +/- 0.0000 Ecliptic YDOT 0.00144172 +/- 0.0000 Ecliptic ZDOT 0.00029180 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.84971900 +/- 0.0006 Geocenter to KBO 46.85933970 +/- 0.0009 # Hcoef: 7.40
The following table shows the complete astrometric record for 15VL169. 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 (15VL169) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.63062 03 11 27.755 +15 08 59.07 24.0w 15VL169 568 C~2nw2 2015 08 12.57765 03 11 28.458 +15 09 00.21 24.2w 15VL169 568 C~2nw2 2015 09 07.53691 03 11 19.029 +15 07 27.57 24.7w 15VL169 568 C~2nw2 2015 09 12.53366 03 11 10.890 +15 06 45.61 24.1w 15VL169 568 C~2nw2 2015 10 07.47747 03 10 03.486 +15 01 41.31 24.1w 15VL169 568 C~2nw2 2015 10 08.48165 03 09 59.959 +15 01 26.39 24.2w 15VL169 568 C~2nw2 2015 10 08.53987 03 09 59.737 +15 01 25.35 24.4w 15VL169 568 C~2nw2 2015 10 08.55151 03 09 59.699 +15 01 25.15 24.6w 15VL169 568 C~2nw2 2015 10 08.56473 03 09 59.674 +15 01 25.05 24.7w 15VL169 568 C~2nw2 2015 11 06.29678 03 08 01.795 +14 53 29.50 23.6r 15VL169 568 C~2nw2 2015 11 06.36009 03 08 01.511 +14 53 28.43 24.0r 15VL169 568 C~2nw2 2015 11 06.43072 03 08 01.194 +14 53 27.28 23.9r 15VL169 568 C~2nw2 2015 11 06.50005 03 08 00.872 +14 53 25.99 23.8r 15VL169 568 C~2nw2 2015 11 07.51946 03 07 56.315 +14 53 08.44 24.1w 15VL169 568 C~2nw2 2015 11 17.28542 03 07 12.551 +14 50 22.85 24.1w 15VL169 568 C~2nw2 2015 11 17.33469 03 07 12.324 +14 50 22.04 24.1w 15VL169 568 C~2nw2 2015 12 13.34802 03 05 23.909 +14 44 00.92 24.5w 15VL169 568 C~2nw2 2015 12 13.40657 03 05 23.684 +14 44 00.14 24.1w 15VL169 568 C~2nw2 2016 01 01.40134 03 04 24.076 +14 41 04.01 24.3w 15VL169 568 C~2nw2 2016 01 07.34755 03 04 10.432 +14 40 32.48 24.7w 15VL169 568 C~2nw2 2016 09 06.61716 03 15 34.326 +15 32 20.40 15VL169 568 C~2nw2 2016 09 26.60468 03 14 52.185 +15 29 05.39 24.3w 15VL169 568 C~2nw2 2016 10 10.41386 03 14 07.281 +15 25 56.80 24.3w 15VL169 568 C~2nw2 2016 10 10.47261 03 14 07.065 +15 25 55.90 24.3w 15VL169 568 C~2nw2 2016 10 27.50838 03 12 58.800 +15 21 24.54 24.5w 15VL169 568 C~2nw2 2016 11 03.53341 03 12 27.998 +15 19 26.42 24.1w 15VL169 568 C~2nw2 2016 12 28.40571 03 08 46.948 +15 06 51.62 24.5w 15VL169 568 C~2nw2 2016 12 29.36323 03 08 44.268 +15 06 44.43 24.5w 15VL169 568 C~2nw2 2017 01 01.26044 03 08 36.562 +15 06 24.71 24.6w 15VL169 568 C~2nw2 2017 01 02.37026 03 08 33.756 +15 06 17.68 24.4w 15VL169 568 C~2nw2 2017 01 26.25843 03 07 57.299 +15 05 33.50 24.3w 15VL169 568 C~2nw2 2017 01 26.26424 03 07 57.293 +15 05 33.53 24.2w 15VL169 568 C~2nw2 2021 12 01.238290 03 32 19.413 +17 16 06.99 24.4G 15VL169 G37 C~5J85 2021 12 01.287390 03 32 19.192 +17 16 06.60 15VL169 G37 C~5J85 2021 12 01.338420 03 32 18.995 +17 16 05.42 15VL169 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 -0.01 0.00 -0.07
2 0.0026 0.00 -0.39 0.00 0.24
3 0.0737 0.00 -0.05 0.00 0.07
4 0.0873 0.00 0.05 0.00 -0.00
5 0.1556 0.00 0.07 0.00 -0.02
6 0.1584 0.00 0.03 0.00 0.04
7 0.1585 0.00 -0.14 0.00 -0.13
8 0.1586 0.00 -0.08 0.00 -0.15
9 0.1586 0.00 0.27 0.00 -0.05
10 0.2373 0.00 0.01 0.00 0.04
11 0.2375 0.00 0.05 0.00 0.04
12 0.2376 0.00 0.10 0.00 0.10
13 0.2378 0.00 -0.01 0.00 0.01
14 0.2406 0.00 -0.03 0.00 0.00
15 0.2674 0.00 0.02 0.00 0.01
16 0.2675 0.00 -0.04 0.00 0.01
17 0.3387 0.00 0.16 0.00 0.02
18 0.3389 0.00 0.09 0.00 -0.05
19 0.3909 0.00 -0.10 0.00 -0.03
20 0.4072 0.00 0.02 0.00 -0.08
21 1.0732 0.00 0.06 0.00 -0.04
22 1.1279 0.00 -0.01 0.00 -0.03
23 1.1657 0.00 0.06 0.00 0.03
24 1.1659 0.00 0.10 0.00 -0.00
25 1.2125 0.00 0.09 0.00 0.05
26 1.2318 0.00 0.01 0.00 0.03
27 1.3820 0.00 -0.06 0.00 -0.05
28 1.3846 0.00 -0.08 0.00 -0.07
29 1.3926 0.00 -0.00 0.00 0.12
30 1.3956 0.00 -0.03 0.00 -0.01
31 1.4610 0.00 0.02 0.00 -0.02
32 1.4610 0.00 -0.02 0.00 0.00
33 6.3069 0.00 -0.21 0.00 -0.03
34 6.3071 0.00 -0.17 0.00 0.26
35 6.3072 0.00 0.36 0.00 -0.22
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.
15VL169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.240 45.240 45.240 ecceobj 0.100 0.100 0.100 incobj 7.069 7.069 7.069 qmin 39.354 39.354 39.369 qmax 50.825 50.766 50.797 amean 44.936 44.936 44.936 amin 44.563 44.576 44.569 amax 45.348 45.328 45.339 emean 0.106 0.106 0.106 emin 0.092 0.092 0.092 emax 0.121 0.121 0.120 imean 5.607 5.607 5.607 imin 5.010 5.010 5.009 imax 6.199 6.198 6.198 excite_mean 0.144 0.144 0.144 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.088 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 186.0 186.0 186.0 kozaiamp 179.9 180.0 179.9