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: 15VB169 # Created Tue Apr 1 01:10:40 2025 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000014 0.018706 -0.000002 0.000367 0.021362 0.000000 # Chi-squared of fit: 7.63 DOF: 70 RMS: 0.08 # Min/Max residuals: -0.19 0.21 # Exact a, adot, b, bdot, g, gdot: 1.367505E-05 1.879651E-02 -1.650376E-07 3.691031E-04 2.148824E-02 1.358814E-04 # Covariance matrix: 2.8836E-13 -3.1174E-13 2.8565E-15 -4.6187E-15 -1.4983E-13 -3.9485E-12 -3.1174E-13 4.6977E-13 -5.1870E-15 8.5170E-15 2.6205E-13 7.2556E-12 2.8565E-15 -5.1870E-15 1.6793E-13 -9.1341E-14 -3.8412E-15 -9.2868E-14 -4.6187E-15 8.5170E-15 -9.1341E-14 6.4807E-14 5.2653E-15 1.5254E-13 -1.4983E-13 2.6205E-13 -3.8412E-15 5.2653E-15 2.7453E-13 4.6876E-12 -3.9485E-12 7.2556E-12 -9.2868E-14 1.5254E-13 4.6876E-12 1.2994E-10 # lat0 lon0 xBary yBary zBary JD0 -1.785806 47.622272 -0.119973 -0.030450 -0.981686 2456978.901288 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 174.43036 +/- 0.402 Argument of Peri: 127.53201 +/- 0.403 Long of Asc Node: 104.96676 +/- 0.018 Inclination: 2.08054 +/- 0.000 Eccentricity: 0.07907677 +/- 0.0001 Semi-Major Axis: 44.04869661 +/- 0.0026 Time of Perihelion: 2512013.5449 +/- 119.3 Perihelion: 40.56546817 +/- 0.0036 Aphelion: 47.53192506 +/- 0.0039 Period (y) 292.3532 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.92170530 +/- 0.0008 Ecliptic Y 35.16896620 +/- 0.0008 Ecliptic Z -1.45027456 +/- 0.0000 Ecliptic XDOT -0.00176077 +/- 0.0000 Ecliptic YDOT 0.00162309 +/- 0.0000 Ecliptic ZDOT 0.00004657 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.51794134 +/- 0.0008 Geocenter to KBO 46.53707993 +/- 0.0011 # Hcoef: 7.66
The following table shows the complete astrometric record for 15VB169. 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 (15VB169) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.40051 03 02 42.752 +15 22 24.68 24.3r 15VB169 568 C~2nw0 2014 11 17.51464 03 02 42.250 +15 22 22.60 24.2r 15VB169 568 C~2nw0 2014 11 19.30670 03 02 34.427 +15 21 50.93 24.2r 15VB169 568 C~2nw0 2014 11 23.41007 03 02 16.685 +15 20 39.45 23.6r 15VB169 568 C~2nw0 2015 08 11.62323 03 11 12.604 +16 00 28.51 24.6w 15VB169 568 C~2nw0 2015 09 07.53281 03 11 04.026 +15 58 59.29 24.4w 15VB169 568 C~2nw0 2015 09 12.52956 03 10 55.983 +15 58 17.86 24.1w 15VB169 568 C~2nw0 2015 10 07.47166 03 09 49.375 +15 53 12.24 24.8w 15VB169 568 C~2nw0 2015 11 06.29151 03 07 49.190 +15 44 47.43 24.4r 15VB169 568 C~2nw0 2015 11 06.42547 03 07 48.611 +15 44 45.38 24.2r 15VB169 568 C~2nw0 2015 11 06.49480 03 07 48.286 +15 44 43.90 24.4r 15VB169 568 C~2nw0 2015 11 07.51356 03 07 43.802 +15 44 25.67 24.7w 15VB169 568 C~2nw0 2015 11 17.27960 03 07 00.599 +15 41 31.88 24.5w 15VB169 568 C~2nw0 2015 11 17.32888 03 07 00.381 +15 41 31.05 24.5w 15VB169 568 C~2nw0 2015 12 06.40765 03 05 39.764 +15 36 17.18 24.3w 15VB169 568 C~2nw0 2015 12 13.34220 03 05 13.409 +15 34 38.39 24.2w 15VB169 568 C~2nw0 2015 12 13.40075 03 05 13.190 +15 34 37.57 24.7w 15VB169 568 C~2nw0 2016 01 01.39556 03 04 14.482 +15 31 09.72 25.2w 15VB169 568 C~2nw0 2016 01 07.34177 03 04 01.054 +15 30 27.31 24.4w 15VB169 568 C~2nw0 2016 02 04.27190 03 03 36.373 +15 29 53.82 24.8w 15VB169 568 C~2nw0 2016 02 10.26162 03 03 39.841 +15 30 23.54 23.9w 15VB169 568 C~2nw0 2016 09 07.55050 03 15 17.248 +16 17 03.01 15VB169 568 C~2nw0 2016 09 26.61279 03 14 36.905 +16 13 52.88 24.5w 15VB169 568 C~2nw0 2016 10 10.42589 03 13 52.595 +16 10 41.09 26.3w 15VB169 568 C~2nw0 2016 10 10.48430 03 13 52.390 +16 10 40.12 25.0w 15VB169 568 C~2nw0 2016 10 10.50790 03 13 52.303 +16 10 39.77 24.8w 15VB169 568 C~2nw0 2016 10 27.50838 03 12 45.137 +16 06 01.87 24.8w 15VB169 568 C~2nw0 2016 10 27.51417 03 12 45.119 +16 06 01.86 24.7w 15VB169 568 C~2nw0 2016 11 03.53341 03 12 14.794 +16 03 59.67 24.6w 15VB169 568 C~2nw0 2016 11 03.53920 03 12 14.768 +16 03 59.55 24.8w 15VB169 568 C~2nw0 2016 12 29.36878 03 08 34.571 +15 50 13.11 24.9w 15VB169 568 C~2nw0 2017 01 01.26608 03 08 27.002 +15 49 48.28 24.7w 15VB169 568 C~2nw0 2017 01 02.37586 03 08 24.228 +15 49 39.47 25.0w 15VB169 568 C~2nw0 2017 01 26.26424 03 07 48.549 +15 48 10.75 24.7w 15VB169 568 C~2nw0 2017 01 26.27054 03 07 48.545 +15 48 10.73 24.5w 15VB169 568 C~2nw0 2017 09 15.60092 03 19 19.269 +16 33 49.36 24.7w 15VB169 568 C~2nw0 2017 09 22.58685 03 19 04.007 +16 32 39.48 24.4w 15VB169 568 C~2nw0 2017 12 16.38715 03 13 31.903 +16 11 01.97 24.7w 15VB169 568 C~2nw0
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 0.03 0.00 0.09
2 0.0003 -7.55 0.10 0.02 0.03
3 0.0052 -125.05 -0.02 1.07 0.09
4 0.0165 -391.43 0.05 3.86 -0.04
5 0.7316 7710.16 -0.05 184.96 0.01
6 0.8053 7566.86 -0.04 132.18 -0.05
7 0.8190 7443.85 0.07 123.43 0.04
8 0.8873 6435.14 -0.14 87.89 -0.02
9 0.9689 4627.41 -0.19 72.32 -0.07
10 0.9693 4618.80 0.18 72.62 0.17
11 0.9695 4613.88 -0.09 72.47 -0.00
12 0.9722 4546.59 0.07 72.57 -0.01
13 0.9990 3898.76 0.07 75.56 -0.06
14 0.9991 3895.50 0.11 75.62 -0.04
15 1.0514 2689.32 0.02 92.81 -0.07
16 1.0703 2296.00 -0.01 102.54 0.01
17 1.0705 2292.73 -0.04 102.62 -0.01
18 1.1225 1419.84 -0.06 136.82 -0.15
19 1.1388 1221.59 -0.03 149.72 0.05
20 1.2153 869.51 -0.19 216.30 -0.00
21 1.2317 925.91 -0.12 230.97 -0.17
22 1.8074 11380.55 0.09 205.97 0.02
23 1.8596 10768.26 -0.05 175.92 0.15
24 1.8974 10100.31 -0.07 160.00 0.12
25 1.8976 10097.20 0.03 159.85 -0.00
26 1.8976 10095.89 0.03 159.85 0.00
27 1.9442 9086.87 -0.05 149.33 -0.05
28 1.9442 9086.62 0.07 149.39 0.01
29 1.9634 8631.95 0.02 148.28 -0.02
30 1.9634 8631.56 0.01 148.27 -0.04
31 2.1163 5346.72 0.16 207.69 0.05
32 2.1242 5234.79 0.21 213.45 -0.04
33 2.1272 5193.84 -0.08 215.84 0.03
34 2.1926 4673.90 0.01 270.52 -0.00
35 2.1927 4673.84 0.00 270.52 -0.02
36 2.8287 15019.65 -0.06 267.90 -0.02
37 2.8479 14788.39 -0.02 257.20 -0.04
38 3.0800 9817.81 -0.02 259.39 0.07
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.
15VB169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.359 44.367 44.351 ecceobj 0.073 0.073 0.073 incobj 2.082 2.082 2.082 qmin 39.982 39.994 39.960 qmax 48.378 48.365 48.347 amean 44.065 44.073 44.058 amin 43.709 43.726 43.706 amax 44.447 44.436 44.424 emean 0.073 0.073 0.073 emin 0.056 0.056 0.057 emax 0.089 0.089 0.089 imean 0.788 0.785 0.791 imin 0.020 0.020 0.020 imax 1.353 1.350 1.357 excite_mean 0.074 0.074 0.075 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.095 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 178.1 178.3 177.8 kozaiamp 180.0 180.0 180.0