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: 15VZ165 # Created Sun Dec 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 2.11y # First observation: 2015/08/12 # Last observation: 2017/09/21 Preliminary a, adot, b, bdot, g, gdot: -0.000177 0.039045 -0.000016 0.001683 0.031326 0.000000 # Chi-squared of fit: 1.55 DOF: 54 RMS: 0.04 # Min/Max residuals: -0.11 0.08 # Exact a, adot, b, bdot, g, gdot: 1.946476E-05 3.861123E-02 6.895252E-07 1.663594E-03 3.105176E-02 8.513945E-03 # Covariance matrix: 1.7655E-13 -3.0658E-14 4.7312E-15 1.3799E-15 1.2553E-13 8.4651E-13 -3.0658E-14 6.1425E-13 5.4776E-15 1.7070E-14 2.8308E-13 8.9255E-12 4.7312E-15 5.4776E-15 9.4876E-14 -7.8085E-14 8.5016E-15 9.9247E-14 1.3799E-15 1.7070E-14 -7.8085E-14 1.3026E-13 9.5960E-15 3.1452E-13 1.2553E-13 2.8308E-13 8.5016E-15 9.5960E-15 2.8893E-13 5.1756E-12 8.4651E-13 8.9255E-12 9.9247E-14 3.1452E-13 5.1756E-12 1.6441E-10 # lat0 lon0 xBary yBary zBary JD0 -3.384597 49.020651 1.015735 -0.000370 -0.008353 2457247.082569 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 18.25064 +/- 0.018 Argument of Peri: 264.18400 +/- 0.048 Long of Asc Node: 102.49003 +/- 0.006 Inclination: 4.11294 +/- 0.000 Eccentricity: 0.36637344 +/- 0.0003 Semi-Major Axis: 47.59615707 +/- 0.0125 Time of Perihelion: 2451160.1028 +/- 5.5 Perihelion: 30.15818912 +/- 0.0160 Aphelion: 65.03412502 +/- 0.0220 Period (y) 328.3719 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 21.85063072 +/- 0.0004 Ecliptic Y 23.61024611 +/- 0.0004 Ecliptic Z -1.90122426 +/- 0.0000 Ecliptic XDOT -0.00207506 +/- 0.0000 Ecliptic YDOT 0.00279846 +/- 0.0000 Ecliptic ZDOT 0.00010216 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.22589701 +/- 0.0004 Geocenter to KBO 32.20429387 +/- 0.0006 # Hcoef: 7.95
The following table shows the complete astrometric record for 15VZ165. 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 (15VZ165) followed by the observatory code and reference code for the source of the astrometry.
2015 08 12.58178 03 10 04.865 +14 13 04.42 23.4w 15VZ165 568 C~2lVd 2015 08 12.58594 03 10 04.864 +14 13 04.40 23.3w 15VZ165 568 C~2lVd 2015 09 07.54100 03 10 01.240 +14 10 26.03 23.2w 15VZ165 568 C~2lVd 2015 09 12.53775 03 09 51.384 +14 09 20.72 23.3w 15VZ165 568 C~2lVd 2015 10 07.48475 03 08 23.320 +14 01 40.59 23.3w 15VZ165 568 C~2lVd 2015 10 08.48746 03 08 18.601 +14 01 18.31 23.2w 15VZ165 568 C~2lVd 2015 10 08.54568 03 08 18.322 +14 01 16.90 23.1w 15VZ165 568 C~2lVd 2015 10 08.55734 03 08 18.264 +14 01 16.77 23.2w 15VZ165 568 C~2lVd 2015 10 08.57055 03 08 18.202 +14 01 16.45 23.2w 15VZ165 568 C~2lVd 2015 11 06.30199 03 05 38.633 +13 49 41.62 23.0r 15VZ165 568 C~2lVd 2015 11 06.36535 03 05 38.244 +13 49 40.09 23.0r 15VZ165 568 C~2lVd 2015 11 06.43596 03 05 37.796 +13 49 38.27 22.9r 15VZ165 568 C~2lVd 2015 11 06.50529 03 05 37.379 +13 49 36.57 23.0r 15VZ165 568 C~2lVd 2015 11 07.52528 03 05 31.182 +13 49 11.49 23.2w 15VZ165 568 C~2lVd 2015 11 17.29127 03 04 31.833 +13 45 16.17 23.3w 15VZ165 568 C~2lVd 2015 11 17.34053 03 04 31.524 +13 45 15.06 23.2w 15VZ165 568 C~2lVd 2015 12 13.41241 03 02 06.100 +13 36 33.76 23.3w 15VZ165 568 C~2lVd 2016 01 01.40713 03 00 49.636 +13 32 59.68 23.4w 15VZ165 568 C~2lVd 2016 01 07.35336 03 00 33.119 +13 32 29.53 23.3w 15VZ165 568 C~2lVd 2016 02 10.27327 03 00 20.259 +13 35 48.92 23.4w 15VZ165 568 C~2lVd 2016 09 06.59818 03 18 45.977 +14 51 15.37 15VZ165 568 C~2lVd 2016 09 26.59251 03 17 55.226 +14 46 28.88 23.4w 15VZ165 568 C~2lVd 2016 10 10.39652 03 16 57.045 +14 41 57.01 23.4w 15VZ165 568 C~2lVd 2016 10 10.45485 03 16 56.756 +14 41 55.78 23.4w 15VZ165 568 C~2lVd 2016 11 02.54312 03 14 50.320 +14 33 06.45 23.2w 15VZ165 568 C~2lVd 2016 11 04.41826 03 14 39.100 +14 32 22.07 22.8w 15VZ165 568 C~2lVd 2017 01 02.39267 03 09 31.177 +14 15 14.50 23.5w 15VZ165 568 C~2lVd 2017 01 26.25843 03 08 48.588 +14 15 07.33 23.4w 15VZ165 568 C~2lVd 2017 09 15.57624 03 27 09.849 +15 28 32.82 23.4w 15VZ165 568 C~2lVd 2017 09 21.62152 03 26 54.601 +15 27 10.81 23.3w 15VZ165 568 C~2lVd
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 0.04 0.00 0.03
2 0.0000 -0.02 -0.06 -0.02 0.04
3 0.0711 -93.40 -0.02 -138.36 0.05
4 0.0848 -249.03 -0.01 -162.66 0.02
5 0.1531 -1606.93 0.01 -259.66 0.04
6 0.1558 -1679.08 -0.04 -262.51 0.03
7 0.1560 -1683.37 -0.01 -262.76 -0.10
8 0.1560 -1684.22 0.00 -262.66 0.04
9 0.1560 -1685.18 0.03 -262.72 0.00
10 0.2347 -4110.29 0.07 -298.79 -0.03
11 0.2349 -4116.16 0.08 -298.71 -0.01
12 0.2351 -4122.94 -0.11 -298.68 -0.04
13 0.2352 -4129.25 0.05 -298.65 -0.07
14 0.2380 -4222.97 -0.03 -298.07 0.02
15 0.2648 -5119.40 0.04 -287.28 -0.05
16 0.2649 -5124.04 -0.04 -287.11 0.00
17 0.3363 -7307.06 0.02 -203.31 -0.02
18 0.3883 -8439.19 -0.08 -99.19 0.05
19 0.4046 -8679.33 0.04 -61.03 0.00
20 0.4974 -8804.05 0.01 182.96 0.01
21 1.0705 7906.76 -0.05 207.72 0.01
22 1.1253 7120.54 0.01 122.68 -0.04
23 1.1631 6233.89 0.04 80.83 -0.01
24 1.1632 6229.52 -0.02 80.74 0.01
25 1.2265 4318.56 0.03 52.67 0.01
26 1.2316 4149.64 0.08 52.92 0.00
27 1.3930 -436.65 -0.05 257.22 -0.00
28 1.4584 -1034.77 -0.01 417.52 -0.01
29 2.0944 15556.61 0.01 509.37 0.02
30 2.1110 15321.34 -0.02 485.18 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.
15VZ165 quality flag:3 Type: 2:1E 2:1E 2:1E Type: 4:2II 4:2II 2:1EII axisobj 48.334 48.384 48.284 ecceobj 0.376 0.377 0.375 incobj 4.114 4.114 4.114 qmin 29.542 29.522 29.552 qmax 66.936 66.965 67.041 amean 47.797 47.797 47.797 amin 47.311 47.323 47.249 amax 48.466 48.466 48.526 emean 0.368 0.368 0.369 emin 0.353 0.353 0.358 emax 0.381 0.382 0.382 imean 3.107 3.212 2.231 imin 1.950 2.028 1.606 imax 5.319 5.248 3.713 excite_mean 0.372 0.373 0.372 fracstop 1.000 1.000 1.000 cjmean 2.969 2.969 2.969 libcent 0 67.2 66.8 68.3 libamp 0 10.5 5.1 18.4 libcent 1 180.7 176.2 180.0 libamp 1 137.0 129.5 176.0 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 194.4 190.2 217.6 kozaiamp 61.2 63.0 81.0