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: 15VE172 # Created Tue Apr 1 01:10:42 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.35y # First observation: 2015/08/11 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000095 0.020383 -0.000007 0.000780 0.022241 0.000000 # Chi-squared of fit: 6.22 DOF: 64 RMS: 0.07 # Min/Max residuals: -0.17 0.19 # Exact a, adot, b, bdot, g, gdot: 1.487551E-05 2.007238E-02 8.549498E-07 7.676481E-04 2.199936E-02 1.581295E-03 # Covariance matrix: 1.8898E-13 -2.1240E-14 4.3045E-15 1.4157E-15 1.2773E-13 1.7821E-12 -2.1240E-14 2.8065E-13 2.9486E-15 6.4700E-15 1.6979E-13 7.8292E-12 4.3045E-15 2.9486E-15 9.7009E-14 -6.6661E-14 6.4559E-15 1.1522E-13 1.4157E-15 6.4700E-15 -6.6661E-14 7.9600E-14 5.4065E-15 2.5169E-13 1.2773E-13 1.6979E-13 6.4559E-15 5.4065E-15 2.4069E-13 6.6176E-12 1.7821E-12 7.8292E-12 1.1522E-13 2.5169E-13 6.6176E-12 3.0457E-10 # lat0 lon0 xBary yBary zBary JD0 -3.029563 51.570705 1.014477 0.002951 0.053395 2457246.102289 # Heliocentric elements and errors Epoch: 2457240.5000 = 2015/08/06 Mean Anomaly: 121.54275 +/- 0.476 Argument of Peri: 177.19211 +/- 0.467 Long of Asc Node: 105.36882 +/- 0.010 Inclination: 3.69684 +/- 0.000 Eccentricity: 0.06542618 +/- 0.0006 Semi-Major Axis: 43.78270013 +/- 0.0050 Time of Perihelion: 2421514.9599 +/- 139.7 Perihelion: 40.91816517 +/- 0.0284 Aphelion: 46.64723510 +/- 0.0286 Period (y) 289.7090 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.97097040 +/- 0.0006 Ecliptic Y 34.88678750 +/- 0.0008 Ecliptic Z -2.40232967 +/- 0.0001 Ecliptic XDOT -0.00183367 +/- 0.0000 Ecliptic YDOT 0.00170420 +/- 0.0000 Ecliptic ZDOT 0.00008506 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.41119087 +/- 0.0007 Geocenter to KBO 45.45587706 +/- 0.0010 # Hcoef: 8.33
The following table shows the complete astrometric record for 15VE172. 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 (15VE172) followed by the observatory code and reference code for the source of the astrometry.
2015 08 11.60150 03 19 51.338 +15 13 45.65 25.7w 15VE172 568 C~2nwC 2015 09 06.61481 03 19 49.349 +15 12 01.75 25.3w 15VE172 568 C~2nwC 2015 09 12.50491 03 19 40.891 +15 11 08.88 25.0w 15VE172 568 C~2nwC 2015 10 07.42821 03 18 35.752 +15 05 47.39 25.4w 15VE172 568 C~2nwC 2015 10 08.44001 03 18 32.230 +15 05 31.56 25.0w 15VE172 568 C~2nwC 2015 10 08.49908 03 18 32.019 +15 05 30.77 25.1w 15VE172 568 C~2nwC 2015 11 07.34843 03 16 28.051 +14 56 55.66 24.6r 15VE172 568 C~2nwC 2015 11 07.39058 03 16 27.858 +14 56 54.98 25.1r 15VE172 568 C~2nwC 2015 11 07.43274 03 16 27.660 +14 56 54.09 24.8r 15VE172 568 C~2nwC 2015 11 10.51713 03 16 13.515 +14 55 59.05 25.2w 15VE172 568 C~2nwC 2015 11 17.36382 03 15 41.961 +14 53 59.02 24.9w 15VE172 568 C~2nwC 2015 11 17.41043 03 15 41.741 +14 53 58.28 24.9w 15VE172 568 C~2nwC 2015 12 06.37266 03 14 17.493 +14 48 55.29 24.6w 15VE172 568 C~2nwC 2015 12 13.30706 03 13 49.459 +14 47 21.60 24.8w 15VE172 568 C~2nwC 2015 12 13.36559 03 13 49.230 +14 47 20.72 24.8w 15VE172 568 C~2nwC 2016 01 01.36029 03 12 45.836 +14 44 11.79 24.9w 15VE172 568 C~2nwC 2016 01 07.30705 03 12 31.014 +14 43 36.29 25.5w 15VE172 568 C~2nwC 2016 02 04.34036 03 12 00.889 +14 43 42.69 25.5w 15VE172 568 C~2nwC 2016 02 11.22942 03 12 04.262 +14 44 28.69 25.4w 15VE172 568 C~2nwC 2016 09 07.56785 03 24 23.272 +15 31 59.82 15VE172 568 C~2nwC 2016 09 25.60501 03 23 47.684 +15 28 49.96 25.0w 15VE172 568 C~2nwC 2016 10 10.44325 03 23 00.838 +15 25 18.58 25.1w 15VE172 568 C~2nwC 2016 10 10.50202 03 23 00.626 +15 25 17.64 25.4w 15VE172 568 C~2nwC 2016 10 10.51973 03 23 00.557 +15 25 17.33 25.4w 15VE172 568 C~2nwC 2016 10 10.53987 03 23 00.480 +15 25 16.97 25.5w 15VE172 568 C~2nwC 2016 11 02.51417 03 21 25.780 +15 18 51.25 24.7w 15VE172 568 C~2nwC 2016 11 04.38927 03 21 17.316 +15 18 18.47 24.7w 15VE172 568 C~2nwC 2016 12 24.31885 03 17 44.698 +15 06 04.20 25.3w 15VE172 568 C~2nwC 2017 01 02.42106 03 17 17.419 +15 04 51.09 25.3w 15VE172 568 C~2nwC 2017 01 26.33541 03 16 36.546 +15 03 54.22 25.0w 15VE172 568 C~2nwC 2017 09 16.63393 03 28 45.815 +15 50 29.00 25.0w 15VE172 568 C~2nwC 2017 09 17.59434 03 28 43.986 +15 50 19.17 24.9w 15VE172 568 C~2nwC 2017 09 23.57295 03 28 30.860 +15 49 13.84 25.1w 15VE172 568 C~2nwC 2017 12 16.34460 03 22 51.754 +15 28 00.12 25.2w 15VE172 568 C~2nwC 2017 12 16.35926 03 22 51.696 +15 27 59.86 25.2w 15VE172 568 C~2nwC
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 -0.06
2 0.0712 -54.45 -0.08 -93.05 0.08
3 0.0873 -186.35 0.16 -112.77 -0.02
4 0.1556 -1180.47 -0.01 -181.04 -0.04
5 0.1584 -1233.84 -0.05 -183.19 -0.08
6 0.1585 -1237.00 -0.00 -183.17 0.05
7 0.2402 -3105.33 0.04 -215.89 0.01
8 0.2404 -3108.21 0.10 -215.82 0.07
9 0.2405 -3111.21 0.03 -215.93 -0.06
10 0.2489 -3323.52 0.18 -215.76 -0.17
11 0.2677 -3796.50 -0.02 -212.51 -0.03
12 0.2678 -3799.77 -0.03 -212.39 0.04
13 0.3197 -5058.56 -0.11 -185.36 0.04
14 0.3387 -5475.72 -0.09 -169.01 0.11
15 0.3388 -5479.16 -0.08 -168.99 -0.04
16 0.3909 -6416.75 -0.11 -109.04 0.04
17 0.4071 -6633.73 0.07 -86.48 -0.01
18 0.4839 -7053.96 0.17 35.35 0.19
19 0.5027 -6994.53 -0.04 66.77 0.02
20 1.0759 4082.35 -0.01 60.56 0.04
21 1.1253 3536.56 0.06 6.16 -0.12
22 1.1659 2827.68 -0.03 -27.52 0.05
23 1.1661 2824.47 0.03 -27.65 0.00
24 1.1661 2823.43 -0.03 -27.70 -0.02
25 1.1662 2822.26 -0.07 -27.77 -0.05
26 1.2291 1399.36 0.03 -53.51 0.01
27 1.2342 1272.59 0.02 -54.04 0.01
28 1.3709 -1890.50 0.04 26.03 -0.05
29 1.3958 -2291.07 -0.04 57.67 -0.08
30 1.4613 -2877.65 -0.08 156.34 0.04
31 2.1000 8034.05 -0.05 192.18 0.06
32 2.1026 8006.00 0.09 189.15 -0.13
33 2.1190 7806.03 -0.10 172.47 0.10
34 2.3484 2741.42 0.06 161.99 0.05
35 2.3484 2740.55 0.03 161.95 -0.03
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.
15VE172 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.199 44.217 44.182 ecceobj 0.065 0.067 0.063 incobj 3.698 3.698 3.698 qmin 40.384 40.308 40.424 qmax 47.632 47.663 47.515 amean 43.882 43.898 43.866 amin 43.539 43.546 43.521 amax 44.253 44.260 44.238 emean 0.060 0.062 0.058 emin 0.043 0.045 0.041 emax 0.077 0.078 0.075 imean 2.078 2.077 2.080 imin 1.343 1.342 1.344 imax 2.726 2.723 2.727 excite_mean 0.071 0.072 0.069 fracstop 1.000 1.000 1.000 cjmean 3.094 3.094 3.094 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 180.9 181.1 181.1 kozaiamp 180.0 180.0 180.0