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: 15VA169 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 46 observations of 46 # Arc: 3.08y # First observation: 2014/11/17 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000026 0.023737 -0.000001 0.000576 0.024121 0.000000 # Chi-squared of fit: 12.14 DOF: 86 RMS: 0.09 # Min/Max residuals: -0.25 0.33 # Exact a, adot, b, bdot, g, gdot: 1.523057E-05 2.384832E-02 9.762045E-07 5.796665E-04 2.422683E-02 -3.777341E-04 # Covariance matrix: 2.3900E-13 -2.6162E-13 2.8328E-15 -4.8405E-15 -1.2670E-13 -2.6881E-12 -2.6162E-13 3.9924E-13 -5.1545E-15 8.9806E-15 2.1447E-13 4.9590E-12 2.8328E-15 -5.1545E-15 1.3327E-13 -7.0308E-14 -3.2872E-15 -7.2649E-14 -4.8405E-15 8.9806E-15 -7.0308E-14 4.9028E-14 4.9864E-15 1.2819E-13 -1.2670E-13 2.1447E-13 -3.2872E-15 4.9864E-15 2.0563E-13 2.8723E-12 -2.6881E-12 4.9590E-12 -7.2649E-14 1.2819E-13 2.8723E-12 7.0527E-11 # lat0 lon0 xBary yBary zBary JD0 -1.706898 47.306895 -0.123478 -0.029095 -0.981308 2456978.792408 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 339.00913 +/- 0.435 Argument of Peri: 332.65839 +/- 0.475 Long of Asc Node: 97.52604 +/- 0.010 Inclination: 2.17450 +/- 0.000 Eccentricity: 0.04095990 +/- 0.0001 Semi-Major Axis: 43.92721479 +/- 0.0024 Time of Perihelion: 2463171.0014 +/- 128.4 Perihelion: 42.12796036 +/- 0.0066 Aphelion: 45.72646923 +/- 0.0067 Period (y) 291.1446 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.54783719 +/- 0.0005 Ecliptic Y 31.13145695 +/- 0.0006 Ecliptic Z -1.22946208 +/- 0.0000 Ecliptic XDOT -0.00201275 +/- 0.0000 Ecliptic YDOT 0.00179256 +/- 0.0000 Ecliptic ZDOT 0.00006685 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.25704908 +/- 0.0005 Geocenter to KBO 41.27654865 +/- 0.0008 # Hcoef: 8.09
The following table shows the complete astrometric record for 15VA169. 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 (15VA169) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29163 03 01 21.927 +15 21 40.99 24.4r 15VA169 568 C~2nw0 2014 11 17.40051 03 01 21.378 +15 21 39.01 24.2r 15VA169 568 C~2nw0 2014 11 17.51464 03 01 20.838 +15 21 36.75 24.4r 15VA169 568 C~2nw0 2014 11 19.30670 03 01 12.201 +15 21 01.80 24.4r 15VA169 568 C~2nw0 2014 11 23.41007 03 00 52.630 +15 19 42.89 24.2r 15VA169 568 C~2nw0 2015 08 11.62323 03 11 22.423 +16 06 45.66 24.2w 15VA169 568 C~2nw0 2015 09 07.53281 03 11 15.498 +16 05 22.57 24.4w 15VA169 568 C~2nw0 2015 09 12.52956 03 11 06.931 +16 04 38.89 24.5w 15VA169 568 C~2nw0 2015 10 07.47166 03 09 54.356 +15 59 09.94 24.8w 15VA169 568 C~2nw0 2015 10 08.47583 03 09 50.527 +15 58 53.28 24.5w 15VA169 568 C~2nw0 2015 10 08.53403 03 09 50.304 +15 58 52.27 24.4w 15VA169 568 C~2nw0 2015 11 06.29151 03 07 41.717 +15 49 56.76 23.9r 15VA169 568 C~2nw0 2015 11 06.35485 03 07 41.399 +15 49 55.65 24.2r 15VA169 568 C~2nw0 2015 11 06.42547 03 07 41.058 +15 49 54.40 24.1r 15VA169 568 C~2nw0 2015 11 06.49480 03 07 40.704 +15 49 52.80 24.3r 15VA169 568 C~2nw0 2015 11 07.51356 03 07 35.735 +15 49 32.77 24.4w 15VA169 568 C~2nw0 2015 11 17.27960 03 06 47.950 +15 46 21.37 24.3w 15VA169 568 C~2nw0 2015 11 17.32888 03 06 47.706 +15 46 20.54 24.5w 15VA169 568 C~2nw0 2015 12 06.40765 03 05 18.667 +15 40 35.19 24.6w 15VA169 568 C~2nw0 2015 12 13.34220 03 04 49.660 +15 38 46.57 24.2w 15VA169 568 C~2nw0 2015 12 13.40075 03 04 49.425 +15 38 45.79 24.5w 15VA169 568 C~2nw0 2016 01 01.39556 03 03 45.227 +15 34 59.31 24.9w 15VA169 568 C~2nw0 2016 01 07.34177 03 03 30.741 +15 34 13.79 24.5w 15VA169 568 C~2nw0 2016 02 04.27190 03 03 05.966 +15 33 47.22 24.6w 15VA169 568 C~2nw0 2016 02 10.26162 03 03 10.524 +15 34 23.38 24.5w 15VA169 568 C~2nw0 2016 09 07.55050 03 16 37.005 +16 28 37.00 15VA169 568 C~2nw0 2016 09 26.61279 03 15 53.897 +16 25 17.30 24.3w 15VA169 568 C~2nw0 2016 10 10.42589 03 15 05.484 +16 21 51.39 24.8w 15VA169 568 C~2nw0 2016 10 10.48430 03 15 05.246 +16 21 50.46 24.6w 15VA169 568 C~2nw0 2016 10 10.50790 03 15 05.146 +16 21 50.06 24.7w 15VA169 568 C~2nw0 2016 10 27.51417 03 13 51.148 +16 16 48.29 24.4w 15VA169 568 C~2nw0 2016 11 03.53920 03 13 17.600 +16 14 34.86 24.3w 15VA169 568 C~2nw0 2016 12 28.39306 03 09 16.976 +15 59 38.75 25.3w 15VA169 568 C~2nw0 2016 12 28.40104 03 09 16.960 +15 59 38.66 24.8w 15VA169 568 C~2nw0 2016 12 29.35861 03 09 14.070 +15 59 29.14 24.9w 15VA169 568 C~2nw0 2016 12 29.36878 03 09 14.051 +15 59 29.11 24.8w 15VA169 568 C~2nw0 2017 01 01.25561 03 09 05.786 +15 59 02.33 24.9w 15VA169 568 C~2nw0 2017 01 01.26608 03 09 05.764 +15 59 02.09 24.9w 15VA169 568 C~2nw0 2017 01 02.36563 03 09 02.764 +15 58 52.68 24.4w 15VA169 568 C~2nw0 2017 01 02.37586 03 09 02.738 +15 58 52.61 24.7w 15VA169 568 C~2nw0 2017 01 26.26424 03 08 24.483 +15 57 19.89 24.6w 15VA169 568 C~2nw0 2017 01 26.27054 03 08 24.489 +15 57 19.84 24.6w 15VA169 568 C~2nw0 2017 09 15.60092 03 21 47.558 +16 50 22.28 24.5w 15VA169 568 C~2nw0 2017 09 22.58685 03 21 31.351 +16 49 10.03 15VA169 568 C~2nw0 2017 12 16.38250 03 15 25.067 +16 25 46.28 24.4w 15VA169 568 C~2nw0 2017 12 16.38715 03 15 25.055 +16 25 46.14 24.3w 15VA169 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 0.07 0.00 -0.12
2 0.0003 -8.18 -0.08 0.32 0.07
3 0.0006 -16.31 0.20 0.34 -0.02
4 0.0055 -146.03 -0.02 1.74 0.12
5 0.0168 -439.91 -0.06 5.28 0.03
6 0.7319 9084.86 -0.13 225.13 -0.02
7 0.8056 8966.19 -0.03 171.82 0.09
8 0.8193 8835.28 -0.12 162.90 0.06
9 0.8876 7737.29 -0.08 127.86 0.14
10 0.8903 7679.54 -0.13 126.72 0.01
11 0.8905 7676.17 -0.06 126.62 -0.06
12 0.9692 5743.45 0.07 114.51 -0.11
13 0.9694 5738.73 0.03 114.69 0.04
14 0.9696 5733.65 0.19 114.83 0.13
15 0.9698 5728.29 -0.01 114.69 -0.05
16 0.9725 5653.78 0.04 114.96 -0.00
17 0.9993 4937.56 0.01 119.23 -0.15
18 0.9994 4933.95 0.04 119.39 -0.04
19 1.0517 3602.35 -0.08 140.13 0.04
20 1.0706 3169.57 -0.06 151.16 -0.05
21 1.0708 3166.09 0.02 151.35 0.02
22 1.1228 2212.03 -0.06 190.07 -0.09
23 1.1391 1998.29 0.07 204.35 -0.02
24 1.2156 1646.96 -0.19 278.19 -0.11
25 1.2320 1720.27 0.09 294.63 -0.04
26 1.8077 13814.36 0.01 288.43 -0.03
27 1.8599 13160.74 0.33 258.48 -0.12
28 1.8977 12431.63 0.06 243.35 -0.01
29 1.8979 12428.07 0.03 243.35 0.03
30 1.8979 12426.57 -0.04 243.35 0.03
31 1.9445 11315.78 0.05 234.25 0.02
32 1.9637 10813.17 0.08 233.98 0.04
33 2.1139 7225.48 -0.25 301.44 0.08
34 2.1139 7225.23 -0.13 301.41 0.04
35 2.1165 7182.49 -0.14 303.53 0.05
36 2.1166 7182.21 0.05 303.58 0.07
37 2.1245 7060.09 0.13 310.08 0.08
38 2.1245 7059.72 0.20 309.94 -0.09
39 2.1275 7015.48 -0.00 312.60 0.01
40 2.1275 7015.10 0.03 312.64 0.02
41 2.1929 6458.36 -0.00 373.13 -0.00
42 2.1930 6458.43 0.12 373.05 -0.09
43 2.8290 18491.64 -0.05 393.82 -0.04
44 2.8482 18246.27 -0.04 383.50 0.07
45 3.0803 12766.66 -0.10 395.89 0.04
46 3.0803 12766.46 -0.02 395.80 -0.06
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.
15VA169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.267 44.274 44.260 ecceobj 0.046 0.046 0.046 incobj 2.175 2.175 2.175 qmin 40.992 40.972 40.995 qmax 47.068 47.071 47.038 amean 43.922 43.929 43.915 amin 43.576 43.591 43.571 amax 44.279 44.287 44.268 emean 0.048 0.048 0.048 emin 0.031 0.031 0.031 emax 0.063 0.063 0.063 imean 0.814 0.812 0.816 imin 0.000 0.000 0.000 imax 1.337 1.335 1.339 excite_mean 0.050 0.050 0.050 fracstop 1.000 1.000 1.000 cjmean 3.098 3.098 3.097 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 171.7 172.0 171.9 kozaiamp 180.0 180.0 180.0