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: 15VC167 # Created Fri Nov 22 02:10:33 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.05y # First observation: 2015/09/06 # Last observation: 2017/09/22 Preliminary a, adot, b, bdot, g, gdot: -0.000115 0.028568 -0.000008 -0.000734 0.026440 0.000000 # Chi-squared of fit: 5.25 DOF: 52 RMS: 0.08 # Min/Max residuals: -0.24 0.23 # Exact a, adot, b, bdot, g, gdot: 1.722862E-05 2.825295E-02 -1.549164E-06 -7.288716E-04 2.633032E-02 -1.313375E-03 # Covariance matrix: 2.5142E-13 -2.0039E-14 4.5648E-15 -4.6449E-15 1.8486E-13 2.2759E-12 -2.0039E-14 4.1742E-13 6.0507E-15 -1.4443E-14 1.9276E-13 8.0623E-12 4.5648E-15 6.0507E-15 1.0155E-13 -8.5395E-14 7.4647E-15 1.8490E-13 -4.6449E-15 -1.4443E-14 -8.5395E-14 1.4085E-13 -1.1343E-14 -4.2346E-13 1.8486E-13 1.9276E-13 7.4647E-15 -1.1343E-14 2.7866E-13 6.0034E-12 2.2759E-12 8.0623E-12 1.8490E-13 -4.2346E-13 6.0034E-12 2.3548E-10 # lat0 lon0 xBary yBary zBary JD0 -3.390106 50.140279 0.927725 -0.023652 -0.401783 2457272.132469 # Heliocentric elements and errors Epoch: 2457270.5000 = 2015/09/05 Mean Anomaly: 333.34824 +/- 0.147 Argument of Peri: 280.18248 +/- 0.208 Long of Asc Node: 163.81174 +/- 0.011 Inclination: 3.70135 +/- 0.000 Eccentricity: 0.14083313 +/- 0.0003 Semi-Major Axis: 43.67378139 +/- 0.0052 Time of Perihelion: 2465075.1422 +/- 43.0 Perihelion: 37.52306605 +/- 0.0153 Aphelion: 49.82449673 +/- 0.0158 Period (y) 288.6286 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.26456236 +/- 0.0005 Ecliptic Y 28.81644091 +/- 0.0006 Ecliptic Z -2.24590218 +/- 0.0000 Ecliptic XDOT -0.00234720 +/- 0.0000 Ecliptic YDOT 0.00176834 +/- 0.0000 Ecliptic ZDOT -0.00006753 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.38918408 +/- 0.0005 Geocenter to KBO 37.97902986 +/- 0.0008 # Hcoef: 8.42
The following table shows the complete astrometric record for 15VC167. 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 (15VC167) followed by the observatory code and reference code for the source of the astrometry.
2015 09 06.63168 03 14 32.133 +14 30 36.51 24.7w 15VC167 568 C~2lVh 2015 09 12.52133 03 14 22.416 +14 29 25.32 24.3w 15VC167 568 C~2lVh 2015 10 07.45992 03 13 07.115 +14 22 28.88 24.4w 15VC167 568 C~2lVh 2015 10 08.46335 03 13 03.076 +14 22 08.97 24.4w 15VC167 568 C~2lVh 2015 10 08.52236 03 13 02.844 +14 22 07.75 24.5w 15VC167 568 C~2lVh 2015 11 07.36952 03 10 39.983 +14 11 22.51 24.1r 15VC167 568 C~2lVh 2015 11 07.41164 03 10 39.763 +14 11 21.54 24.2r 15VC167 568 C~2lVh 2015 11 07.45387 03 10 39.544 +14 11 20.68 24.2r 15VC167 568 C~2lVh 2015 11 10.54061 03 10 23.278 +14 10 12.86 23.3w 15VC167 568 C~2lVh 2015 11 17.38710 03 09 47.249 +14 07 45.17 24.4w 15VC167 568 C~2lVh 2015 11 17.43381 03 09 46.995 +14 07 44.11 24.5w 15VC167 568 C~2lVh 2015 12 06.39596 03 08 11.560 +14 01 36.41 24.5w 15VC167 568 C~2lVh 2015 12 13.33048 03 07 40.207 +13 59 44.46 24.4w 15VC167 568 C~2lVh 2015 12 13.38903 03 07 39.944 +13 59 43.55 24.3w 15VC167 568 C~2lVh 2016 01 01.38342 03 06 30.520 +13 56 04.03 24.5w 15VC167 568 C~2lVh 2016 01 02.34977 03 06 27.768 +13 55 56.81 24.5w 15VC167 568 C~2lVh 2016 01 07.33018 03 06 14.871 +13 55 25.34 24.7w 15VC167 568 C~2lVh 2016 02 05.27611 03 05 49.164 +13 56 04.44 24.5w 15VC167 568 C~2lVh 2016 02 10.29646 03 05 53.748 +13 56 49.93 24.5w 15VC167 568 C~2lVh 2016 09 26.59251 03 20 17.229 +14 48 41.97 24.5w 15VC167 568 C~2lVh 2016 10 10.39652 03 19 26.673 +14 44 29.38 24.7w 15VC167 568 C~2lVh 2016 10 10.45485 03 19 26.425 +14 44 28.28 24.6w 15VC167 568 C~2lVh 2016 11 02.54312 03 17 36.799 +14 36 23.56 24.5w 15VC167 568 C~2lVh 2016 11 04.41826 03 17 27.060 +14 35 43.02 24.4w 15VC167 568 C~2lVh 2016 12 29.38526 03 13 07.956 +14 20 06.15 24.9w 15VC167 568 C~2lVh 2017 01 02.39267 03 12 55.626 +14 19 33.58 24.5w 15VC167 568 C~2lVh 2017 01 26.31474 03 12 13.853 +14 18 42.88 24.8w 15VC167 568 C~2lVh 2017 09 15.59463 03 27 21.236 +15 13 49.14 24.6w 15VC167 568 C~2lVh 2017 09 22.58081 03 27 05.048 +15 12 12.79 24.6w 15VC167 568 C~2lVh
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 -0.05 0.00 0.23
2 0.0161 -154.88 -0.05 -31.50 0.00
3 0.0844 -1319.92 0.01 -144.19 -0.02
4 0.0872 -1381.79 -0.02 -147.84 -0.01
5 0.0873 -1385.36 0.15 -148.12 -0.10
6 0.1690 -3559.23 -0.02 -217.41 -0.07
7 0.1691 -3562.58 0.03 -217.49 -0.13
8 0.1693 -3565.88 0.14 -217.47 -0.09
9 0.1777 -3812.03 -0.24 -219.54 0.14
10 0.1965 -4356.70 0.04 -221.41 0.03
11 0.1966 -4360.54 -0.04 -221.44 -0.02
12 0.2485 -5797.68 0.04 -201.93 0.02
13 0.2675 -6267.66 0.11 -186.43 -0.04
14 0.2676 -6271.59 0.04 -186.27 -0.05
15 0.3196 -7304.96 -0.13 -123.65 -0.02
16 0.3223 -7345.54 -0.00 -119.71 0.06
17 0.3359 -7535.03 -0.07 -98.95 0.08
18 0.4152 -7885.02 -0.05 40.62 0.02
19 0.4289 -7808.31 0.11 66.23 -0.01
20 1.0567 5118.85 0.02 -255.48 0.06
21 1.0945 4344.86 0.00 -310.61 -0.05
22 1.0947 4341.10 -0.00 -310.75 -0.01
23 1.1579 2678.59 -0.05 -366.73 -0.01
24 1.1630 2531.52 -0.01 -369.09 -0.02
25 1.3135 -1345.94 0.04 -285.06 -0.05
26 1.3245 -1527.37 0.04 -268.99 -0.04
27 1.3900 -2126.23 -0.05 -156.75 0.08
28 2.0259 11453.75 -0.06 -354.06 0.03
29 2.0450 11202.05 0.07 -388.92 0.01
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.
15VC167 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 44.123 44.133 44.112 ecceobj 0.146 0.146 0.146 incobj 3.691 3.691 3.691 qmin 37.120 37.047 37.111 qmax 50.741 50.824 50.722 amean 43.727 43.727 43.727 amin 43.324 43.327 43.322 amax 44.164 44.163 44.162 emean 0.123 0.127 0.121 emin 0.090 0.098 0.087 emax 0.150 0.151 0.149 imean 4.783 4.473 4.913 imin 3.058 2.858 3.097 imax 6.893 6.367 7.118 excite_mean 0.150 0.150 0.150 fracstop 1.000 1.000 1.000 cjmean 3.071 3.071 3.071 libcent 0 186.9 182.3 185.2 libamp 0 95.9 93.6 90.6 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 266.7 266.5 266.6 kozaiamp 52.4 48.8 54.2