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: 15VZ168 # Created Mon Apr 28 01:10:41 2025 # Orbit generated from Bernstein formalism # Fitting 42 observations of 42 # Arc: 2.19y # First observation: 2014/11/17 # Last observation: 2017/01/26 Preliminary a, adot, b, bdot, g, gdot: -0.000033 0.016845 -0.000001 -0.001776 0.020417 0.000000 # Chi-squared of fit: 7.42 DOF: 78 RMS: 0.07 # Min/Max residuals: -0.17 0.17 # Exact a, adot, b, bdot, g, gdot: 1.349066E-05 1.686468E-02 -1.358548E-06 -1.781291E-03 2.046275E-02 -1.384993E-03 # Covariance matrix: 2.5744E-13 -3.2538E-13 -8.6300E-15 2.4109E-14 -1.8765E-13 -5.8359E-12 -3.2538E-13 6.4556E-13 2.2110E-14 -6.1170E-14 4.2112E-13 1.4860E-11 -8.6300E-15 2.2110E-14 1.6140E-13 -9.7929E-14 1.5289E-14 5.8025E-13 2.4109E-14 -6.1170E-14 -9.7929E-14 7.9400E-14 -4.3228E-14 -1.5990E-12 -1.8765E-13 4.2112E-13 1.5289E-14 -4.3228E-14 3.8417E-13 1.0418E-11 -5.8359E-12 1.4860E-11 5.8025E-13 -1.5990E-12 1.0418E-11 3.8901E-10 # lat0 lon0 xBary yBary zBary JD0 -1.538359 47.599081 -0.118470 -0.026225 -0.982006 2456978.792408 # Heliocentric elements and errors Epoch: 2456970.5000 = 2014/11/09 Mean Anomaly: 217.30718 +/- 0.344 Argument of Peri: 345.80132 +/- 0.338 Long of Asc Node: 213.73548 +/- 0.002 Inclination: 6.20952 +/- 0.001 Eccentricity: 0.15045084 +/- 0.0005 Semi-Major Axis: 44.24725864 +/- 0.0078 Time of Perihelion: 2499582.0765 +/- 102.2 Perihelion: 37.59022122 +/- 0.0225 Aphelion: 50.90429607 +/- 0.0233 Period (y) 294.3322 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.51316797 +/- 0.0010 Ecliptic Y 36.88107843 +/- 0.0011 Ecliptic Z -1.31203654 +/- 0.0000 Ecliptic XDOT -0.00179976 +/- 0.0000 Ecliptic YDOT 0.00137507 +/- 0.0000 Ecliptic ZDOT -0.00023317 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.85045450 +/- 0.0011 Geocenter to KBO 48.86928659 +/- 0.0015 # Hcoef: 7.57
The following table shows the complete astrometric record for 15VZ168. 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 (15VZ168) followed by the observatory code and reference code for the source of the astrometry.
2014 11 17.29163 03 02 20.058 +15 36 17.08 24.2r 15VZ168 568 C~2nw0 2014 11 17.40051 03 02 19.604 +15 36 15.05 24.5r 15VZ168 568 C~2nw0 2014 11 17.51464 03 02 19.116 +15 36 13.04 24.6r 15VZ168 568 C~2nw0 2014 11 19.30670 03 02 11.640 +15 35 40.38 24.3r 15VZ168 568 C~2nw0 2014 11 23.41007 03 01 54.660 +15 34 26.58 24.3r 15VZ168 568 C~2nw0 2015 08 11.62323 03 10 22.674 +16 06 37.40 24.7w 15VZ168 568 C~2nw0 2015 09 07.53281 03 10 13.652 +16 04 40.68 25.3w 15VZ168 568 C~2nw0 2015 09 12.52956 03 10 05.833 +16 03 54.91 24.2w 15VZ168 568 C~2nw0 2015 10 07.47166 03 09 01.635 +15 58 32.19 24.7w 15VZ168 568 C~2nw0 2015 10 08.47583 03 08 58.278 +15 58 16.44 24.9w 15VZ168 568 C~2nw0 2015 10 08.53403 03 08 58.078 +15 58 15.48 24.5w 15VZ168 568 C~2nw0 2015 11 06.29151 03 07 06.382 +15 49 51.35 24.7r 15VZ168 568 C~2nw0 2015 11 06.35485 03 07 06.104 +15 49 50.13 24.6r 15VZ168 568 C~2nw0 2015 11 06.42547 03 07 05.824 +15 49 48.84 24.6r 15VZ168 568 C~2nw0 2015 11 06.49480 03 07 05.522 +15 49 47.69 24.5r 15VZ168 568 C~2nw0 2015 11 07.51356 03 07 01.214 +15 49 28.68 24.6w 15VZ168 568 C~2nw0 2015 11 17.27960 03 06 19.853 +15 46 29.54 24.5w 15VZ168 568 C~2nw0 2015 11 17.32888 03 06 19.645 +15 46 28.69 24.3w 15VZ168 568 C~2nw0 2015 12 13.34220 03 04 37.332 +15 39 18.79 24.5w 15VZ168 568 C~2nw0 2015 12 13.40075 03 04 37.115 +15 39 17.96 24.8w 15VZ168 568 C~2nw0 2016 01 01.39556 03 03 40.960 +15 35 32.90 25.3w 15VZ168 568 C~2nw0 2016 01 07.34177 03 03 28.122 +15 34 44.07 24.8w 15VZ168 568 C~2nw0 2016 02 04.27190 03 03 04.440 +15 33 33.38 24.6w 15VZ168 568 C~2nw0 2016 02 10.26162 03 03 07.717 +15 33 53.67 24.6w 15VZ168 568 C~2nw0 2016 09 07.55050 03 14 10.196 +16 14 04.78 15VZ168 568 C~2nw0 2016 09 26.61279 03 13 31.061 +16 10 36.45 25.8w 15VZ168 568 C~2nw0 2016 10 10.42589 03 12 48.361 +16 07 13.85 24.9w 15VZ168 568 C~2nw0 2016 10 10.48430 03 12 48.166 +16 07 12.97 24.8w 15VZ168 568 C~2nw0 2016 10 10.50790 03 12 48.085 +16 07 12.57 24.6w 15VZ168 568 C~2nw0 2016 10 27.50838 03 11 43.578 +16 02 23.08 24.6w 15VZ168 568 C~2nw0 2016 10 27.51417 03 11 43.552 +16 02 22.98 24.7w 15VZ168 568 C~2nw0 2016 11 03.53341 03 11 14.483 +16 00 16.48 24.8w 15VZ168 568 C~2nw0 2016 11 03.53920 03 11 14.459 +16 00 16.46 24.8w 15VZ168 568 C~2nw0 2016 12 28.40571 03 07 46.276 +15 46 01.45 23.6w 15VZ168 568 C~2nw0 2016 12 29.36323 03 07 43.767 +15 45 51.66 24.9w 15VZ168 568 C~2nw0 2016 12 29.36878 03 07 43.760 +15 45 51.74 24.7w 15VZ168 568 C~2nw0 2017 01 01.26044 03 07 36.537 +15 45 24.38 24.8w 15VZ168 568 C~2nw0 2017 01 01.26608 03 07 36.530 +15 45 24.34 25.0w 15VZ168 568 C~2nw0 2017 01 02.37026 03 07 33.909 +15 45 14.49 24.9w 15VZ168 568 C~2nw0 2017 01 02.37586 03 07 33.894 +15 45 14.54 24.7w 15VZ168 568 C~2nw0 2017 01 26.26424 03 06 59.824 +15 43 20.12 24.8w 15VZ168 568 C~2nw0 2017 01 26.27054 03 06 59.818 +15 43 20.28 24.8w 15VZ168 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 -0.09 0.00 -0.00
2 0.0003 -6.86 0.03 -0.12 -0.09
3 0.0006 -14.20 0.02 -0.09 0.01
4 0.0055 -127.03 -0.01 -1.37 0.04
5 0.0168 -383.21 -0.07 -3.84 -0.02
6 0.7319 7198.89 -0.04 -156.78 -0.06
7 0.8056 7042.05 -0.09 -234.21 0.03
8 0.8193 6921.04 0.02 -247.91 -0.05
9 0.8876 5941.74 0.11 -308.52 -0.02
10 0.8903 5890.83 -0.03 -310.57 0.05
11 0.8905 5887.80 -0.05 -310.71 0.01
12 0.9692 4199.07 -0.03 -357.54 0.14
13 0.9694 4194.88 -0.15 -357.62 0.10
14 0.9696 4190.64 0.17 -357.76 0.02
15 0.9698 4186.13 0.14 -357.67 0.17
16 0.9725 4121.10 0.02 -358.98 -0.01
17 0.9993 3497.68 -0.09 -367.97 -0.04
18 0.9994 3494.56 -0.04 -367.96 -0.02
19 1.0706 1955.69 0.07 -375.10 -0.05
20 1.0708 1952.45 -0.05 -375.04 -0.00
21 1.1228 1110.59 -0.07 -367.07 -0.15
22 1.1391 918.83 0.14 -362.59 -0.01
23 1.2156 570.45 0.15 -335.56 0.01
24 1.2320 621.58 0.10 -329.22 -0.02
25 1.8077 10483.20 0.07 -601.58 0.01
26 1.8599 9882.98 0.02 -652.95 -0.01
27 1.8977 9234.63 -0.10 -684.55 0.06
28 1.8979 9231.68 0.06 -684.65 0.06
29 1.8979 9230.45 0.09 -684.72 0.03
30 1.9445 8255.40 -0.02 -715.31 -0.08
31 1.9445 8255.01 -0.05 -715.30 -0.07
32 1.9637 7816.68 0.04 -724.82 -0.07
33 1.9637 7816.34 0.07 -724.75 0.01
34 2.1139 4690.60 -0.17 -735.85 0.16
35 2.1166 4653.07 -0.15 -735.41 -0.06
36 2.1166 4652.99 -0.00 -735.30 0.04
37 2.1245 4545.15 -0.02 -733.21 -0.01
38 2.1245 4545.05 0.08 -733.23 -0.03
39 2.1275 4505.94 -0.00 -732.39 -0.09
40 2.1275 4505.74 0.00 -732.28 0.01
41 2.1929 4001.08 -0.03 -708.10 -0.07
42 2.1930 4001.04 -0.02 -707.93 0.10
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.
15VZ168 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.517 44.537 44.497 ecceobj 0.142 0.144 0.141 incobj 6.180 6.180 6.180 qmin 36.991 36.834 37.037 qmax 51.917 52.120 51.801 amean 44.268 44.313 44.246 amin 43.903 43.926 43.877 amax 44.690 44.746 44.659 emean 0.145 0.148 0.144 emin 0.128 0.131 0.126 emax 0.163 0.166 0.161 imean 7.290 7.294 7.290 imin 6.185 6.179 6.191 imax 8.254 8.253 8.250 excite_mean 0.193 0.195 0.192 fracstop 1.000 1.000 1.000 cjmean 3.060 3.059 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 174.4 174.4 174.3 kozaiamp 180.0 179.9 180.0