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: 15VC169 # Created Sun Apr 27 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 2.85y # First observation: 2014/11/17 # Last observation: 2017/09/23 Preliminary a, adot, b, bdot, g, gdot: -0.000187 0.027052 0.000002 -0.000931 0.025944 0.000000 # Chi-squared of fit: 7.12 DOF: 60 RMS: 0.08 # Min/Max residuals: -0.22 0.26 # Exact a, adot, b, bdot, g, gdot: 1.661157E-05 2.685512E-02 -9.584499E-07 -9.264923E-04 2.598558E-02 -4.089240E-03 # Covariance matrix: 2.5952E-13 -2.9863E-13 -2.3388E-15 6.0516E-15 -1.0696E-13 -2.5983E-12 -2.9863E-13 4.9018E-13 4.7503E-15 -1.1944E-14 1.8200E-13 5.1647E-12 -2.3388E-15 4.7503E-15 1.5678E-13 -9.5151E-14 1.8823E-15 5.9449E-14 6.0516E-15 -1.1944E-14 -9.5151E-14 8.0842E-14 -6.5038E-15 -1.5285E-13 -1.0696E-13 1.8200E-13 1.8823E-15 -6.5038E-15 2.5175E-13 2.6205E-12 -2.5983E-12 5.1647E-12 5.9449E-14 -1.5285E-13 2.6205E-12 6.5730E-11 # lat0 lon0 xBary yBary zBary JD0 -1.593194 47.186316 -0.125544 -0.027140 -0.981102 2456978.792408 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 310.85207 +/- 0.023 Argument of Peri: 284.98843 +/- 0.048 Long of Asc Node: 189.06267 +/- 0.009 Inclination: 2.50525 +/- 0.000 Eccentricity: 0.17617409 +/- 0.0003 Semi-Major Axis: 43.57095898 +/- 0.0059 Time of Perihelion: 2471312.0732 +/- 6.0 Perihelion: 35.89488507 +/- 0.0138 Aphelion: 51.24703289 +/- 0.0146 Period (y) 287.6099 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.71529472 +/- 0.0005 Ecliptic Y 29.02569436 +/- 0.0006 Ecliptic Z -1.06998754 +/- 0.0000 Ecliptic XDOT -0.00237442 +/- 0.0000 Ecliptic YDOT 0.00160006 +/- 0.0000 Ecliptic ZDOT -0.00008550 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.46318257 +/- 0.0005 Geocenter to KBO 38.48287426 +/- 0.0007 # Hcoef: 8.52
The following table shows the complete astrometric record for 15VC169. 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 (15VC169) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29163 03 00 45.196 +15 26 12.41 25.0r 15VC169 568 C~2nw0 2014 11 17.40051 03 00 44.628 +15 26 10.01 24.4r 15VC169 568 C~2nw0 2014 11 17.51464 03 00 44.036 +15 26 07.54 24.7r 15VC169 568 C~2nw0 2014 11 19.30670 03 00 34.915 +15 25 28.66 24.4r 15VC169 568 C~2nw0 2014 11 23.41007 03 00 14.203 +15 24 01.20 24.6r 15VC169 568 C~2nw0 2015 08 11.62323 03 11 47.944 +16 11 42.09 24.6w 15VC169 568 C~2nw0 2015 09 07.53281 03 11 42.685 +16 09 59.51 24.4w 15VC169 568 C~2nw0 2015 09 12.52956 03 11 33.874 +16 09 10.19 24.8w 15VC169 568 C~2nw0 2015 10 07.47166 03 10 17.743 +16 03 03.29 24.7w 15VC169 568 C~2nw0 2015 10 08.47583 03 10 13.697 +16 02 45.12 24.7w 15VC169 568 C~2nw0 2015 10 08.53403 03 10 13.462 +16 02 44.02 24.8w 15VC169 568 C~2nw0 2015 11 06.29151 03 07 57.105 +15 52 51.11 24.6r 15VC169 568 C~2nw0 2015 11 06.35485 03 07 56.766 +15 52 49.92 24.2r 15VC169 568 C~2nw0 2015 11 06.42547 03 07 56.413 +15 52 48.64 24.6r 15VC169 568 C~2nw0 2015 11 06.49480 03 07 56.049 +15 52 46.74 24.0r 15VC169 568 C~2nw0 2015 11 07.51356 03 07 50.744 +15 52 24.64 24.5w 15VC169 568 C~2nw0 2015 11 17.27960 03 06 59.954 +15 48 52.77 24.5w 15VC169 568 C~2nw0 2015 11 17.32888 03 06 59.711 +15 48 51.72 24.5w 15VC169 568 C~2nw0 2015 12 13.40075 03 04 54.080 +15 40 25.37 24.5w 15VC169 568 C~2nw0 2016 01 01.39556 03 03 46.216 +15 36 09.32 24.7w 15VC169 568 C~2nw0 2016 01 07.34177 03 03 31.013 +15 35 16.32 24.7w 15VC169 568 C~2nw0 2016 02 04.27190 03 03 06.194 +15 34 29.83 24.7w 15VC169 568 C~2nw0 2016 02 10.26162 03 03 11.466 +15 35 04.75 24.5w 15VC169 568 C~2nw0 2016 09 06.59240 03 17 56.794 +16 31 18.31 15VC169 568 C~2nw0 2016 09 26.58845 03 17 10.902 +16 27 25.57 24.9w 15VC169 568 C~2nw0 2016 10 10.39070 03 16 20.021 +16 23 36.48 24.7w 15VC169 568 C~2nw0 2016 10 10.44903 03 16 19.773 +16 23 35.33 24.6w 15VC169 568 C~2nw0 2016 10 27.49679 03 15 01.124 +16 18 00.10 24.6w 15VC169 568 C~2nw0 2016 11 02.60285 03 14 30.149 +16 15 51.68 24.5w 15VC169 568 C~2nw0 2016 11 03.52184 03 14 25.426 +16 15 32.32 24.6w 15VC169 568 C~2nw0 2017 01 26.26424 03 09 13.467 +15 56 07.24 24.6w 15VC169 568 C~2nw0 2017 09 16.60944 03 23 57.805 +16 50 30.42 24.6w 15VC169 568 C~2nw0 2017 09 23.54857 03 23 40.626 +16 49 06.89 24.5w 15VC169 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 -0.06 0.00 0.08
2 0.0003 -8.56 -0.09 -0.00 0.05
3 0.0006 -17.47 -0.05 0.03 0.07
4 0.0055 -154.96 0.01 -0.29 -0.00
5 0.0168 -466.98 0.04 -0.12 -0.00
6 0.7319 9954.32 -0.01 2.45 -0.01
7 0.8056 9853.62 0.15 -76.18 -0.06
8 0.8193 9717.80 0.05 -89.69 0.03
9 0.8876 8560.11 -0.04 -148.15 -0.13
10 0.8903 8498.95 -0.03 -149.92 0.03
11 0.8905 8495.38 0.05 -150.07 -0.03
12 0.9692 6439.10 -0.03 -187.89 -0.21
13 0.9694 6434.06 -0.07 -187.70 -0.01
14 0.9696 6428.81 0.26 -187.54 0.16
15 0.9698 6423.23 0.17 -187.94 -0.22
16 0.9725 6343.49 -0.10 -188.36 0.01
17 0.9993 5579.95 -0.15 -192.16 0.04
18 0.9994 5576.29 0.08 -192.21 -0.03
19 1.0708 3692.24 -0.01 -181.01 -0.03
20 1.1228 2679.13 -0.03 -156.09 0.03
21 1.1391 2453.36 0.05 -146.13 0.01
22 1.2156 2095.90 0.06 -91.24 0.05
23 1.2320 2178.79 0.08 -78.85 0.06
24 1.8051 15406.04 -0.04 -266.36 -0.04
25 1.8598 14704.39 -0.08 -318.84 0.13
26 1.8976 13934.18 -0.05 -348.15 0.06
27 1.8978 13930.42 -0.09 -348.33 -0.04
28 1.9444 12745.11 -0.02 -373.66 0.01
29 1.9612 12279.33 -0.16 -379.58 -0.03
30 1.9637 12208.37 -0.01 -380.24 0.04
31 2.1929 7553.81 -0.02 -298.37 -0.01
32 2.8318 20756.27 0.04 -487.05 0.02
33 2.8508 20493.91 0.12 -505.39 0.00
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.
15VC169 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 43.872 43.886 43.858 ecceobj 0.175 0.176 0.175 incobj 2.495 2.495 2.495 qmin 35.421 35.689 34.958 qmax 52.178 52.372 52.497 amean 43.568 43.867 43.546 amin 43.177 43.274 43.150 amax 44.027 44.332 44.018 emean 0.148 0.138 0.156 emin 0.115 0.105 0.125 emax 0.186 0.188 0.194 imean 4.417 5.094 3.491 imin 2.741 2.731 0.127 imax 5.938 6.755 5.970 excite_mean 0.168 0.165 0.171 fracstop 1.000 1.000 1.000 cjmean 3.063 3.066 3.060 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 181.9 178.7 176.3 kozaiamp 179.9 180.0 180.0