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: 15VC164 # Created Sun Dec 22 02:10:32 2024 # Orbit generated from Bernstein formalism # Fitting 29 observations of 29 # Arc: 2.19y # First observation: 2015/10/07 # Last observation: 2017/12/16 Preliminary a, adot, b, bdot, g, gdot: -0.000081 0.023705 0.000009 0.011391 0.025154 0.000000 # Chi-squared of fit: 15.54 DOF: 52 RMS: 0.13 # Min/Max residuals: -0.34 0.28 # Exact a, adot, b, bdot, g, gdot: 1.482919E-05 2.380244E-02 6.129699E-06 1.146333E-02 2.538617E-02 2.714461E-03 # Covariance matrix: 1.9580E-13 -5.4354E-14 -8.2638E-15 3.8865E-14 1.3749E-13 1.9695E-12 -5.4354E-14 3.4184E-13 -3.4554E-14 1.6206E-13 1.8699E-13 8.2186E-12 -8.2638E-15 -3.4554E-14 1.3242E-13 -1.3160E-13 -3.1943E-14 -1.4215E-12 3.8865E-14 1.6206E-13 -1.3160E-13 2.7349E-13 1.4998E-13 6.6668E-12 1.3749E-13 1.8699E-13 -3.1943E-14 1.4998E-13 3.2104E-13 7.6040E-12 1.9695E-12 8.2186E-12 -1.4215E-12 6.6668E-12 7.6040E-12 3.3810E-10 # lat0 lon0 xBary yBary zBary JD0 -0.420299 51.245241 0.611051 -0.005668 -0.795690 2457303.039329 # Heliocentric elements and errors Epoch: 2457300.5000 = 2015/10/05 Mean Anomaly: 32.67258 +/- 0.151 Argument of Peri: 316.18467 +/- 0.224 Long of Asc Node: 51.23348 +/- 0.000 Inclination: 25.70080 +/- 0.001 Eccentricity: 0.14110390 +/- 0.0005 Semi-Major Axis: 45.24616179 +/- 0.0077 Time of Perihelion: 2447211.4104 +/- 46.6 Perihelion: 38.86175190 +/- 0.0250 Aphelion: 51.63057167 +/- 0.0257 Period (y) 304.3553 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.62851035 +/- 0.0006 Ecliptic Y 30.95551623 +/- 0.0007 Ecliptic Z -0.28872700 +/- 0.0000 Ecliptic XDOT -0.00181460 +/- 0.0000 Ecliptic YDOT 0.00183577 +/- 0.0000 Ecliptic ZDOT 0.00123417 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.18890259 +/- 0.0006 Geocenter to KBO 39.39152691 +/- 0.0009 # Hcoef: 9.36
The following table shows the complete astrometric record for 15VC164. 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 (15VC164) followed by the observatory code and reference code for the source of the astrometry.
2015 10 07.53854 03 15 43.746 +17 39 56.15 26.0w 15VC164 568 C~2fCN 2015 10 07.59790 03 15 43.485 +17 39 55.34 25.7w 15VC164 568 C~2fCN 2015 11 07.33264 03 13 14.286 +17 33 33.52 25.3r 15VC164 568 C~2fCO 2015 11 07.37479 03 13 14.062 +17 33 33.21 24.9r 15VC164 568 C~2fCO 2015 11 07.41697 03 13 13.826 +17 33 32.71 24.8r 15VC164 568 C~2fCO 2015 11 10.49950 03 12 57.305 +17 32 48.15 25.0w 15VC164 568 C~2fCO 2015 11 17.36965 03 12 20.423 +17 31 09.40 24.9w 15VC164 568 C~2fCO 2015 11 17.41626 03 12 20.151 +17 31 08.75 25.6w 15VC164 568 C~2fCO 2015 12 06.37850 03 10 42.307 +17 26 51.38 25.6w 15VC164 568 C~2fCO 2015 12 13.31287 03 10 09.887 +17 25 30.63 25.1w 15VC164 568 C~2fCO 2015 12 13.37141 03 10 09.603 +17 25 29.95 25.9w 15VC164 568 C~2fCO 2016 02 04.28927 03 08 05.254 +17 23 21.30 27.2w 15VC164 568 C~2fCO 2016 02 10.27908 03 08 08.389 +17 24 15.04 25.2w 15VC164 568 C~2fCO 2016 09 07.57363 03 21 56.384 +18 40 48.51 15VC164 568 C~2fCO 2016 09 27.51061 03 21 06.804 +18 40 00.90 26.1w 15VC164 568 C~2fCO 2016 10 07.49247 03 20 29.601 +18 38 50.50 25.9w 15VC164 568 C~2fCO 2016 10 07.58817 03 20 29.182 +18 38 49.80 25.3w 15VC164 568 C~2fCO 2016 10 09.49252 03 20 21.277 +18 38 33.32 25.7w 15VC164 568 C~2fCO 2016 10 09.56525 03 20 20.945 +18 38 32.76 25.6w 15VC164 568 C~2fCO 2016 11 02.53154 03 18 25.216 +18 33 59.91 25.6w 15VC164 568 C~2fCO 2016 11 02.53733 03 18 25.175 +18 33 59.94 25.8w 15VC164 568 C~2fCO 2016 11 04.40663 03 18 15.300 +18 33 35.13 26.0w 15VC164 568 C~2fCO 2016 12 24.30698 03 14 07.894 +18 23 10.51 26.3w 15VC164 568 C~2fCO 2016 12 24.32550 03 14 07.826 +18 23 10.24 25.4w 15VC164 568 C~2fCO 2017 01 02.40920 03 13 36.402 +18 22 04.33 25.8w 15VC164 568 C~2fCO 2017 01 02.42780 03 13 36.351 +18 22 04.17 25.5w 15VC164 568 C~2fCO 2017 01 26.29981 03 12 49.510 +18 21 24.80 25.7w 15VC164 568 C~2fCO 2017 09 15.60695 03 26 29.797 +19 38 27.74 25.5w 15VC164 568 C~2fCO 2017 12 16.36391 03 19 30.383 +19 23 21.82 25.1w 15VC164 568 C~2fCO
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 -0.00 0.00 0.21
2 0.0002 -3.81 -0.24 0.19 0.03
3 0.0843 -2162.31 0.11 192.64 -0.09
4 0.0844 -2165.48 0.25 193.19 0.16
5 0.0845 -2168.87 0.18 193.60 0.28
6 0.0930 -2408.55 0.01 213.17 -0.09
7 0.1118 -2943.46 0.16 257.89 -0.06
8 0.1119 -2947.39 -0.08 258.30 0.02
9 0.1638 -4365.64 -0.18 383.59 -0.17
10 0.1828 -4834.50 0.14 430.18 -0.04
11 0.1830 -4838.60 -0.08 430.62 -0.01
12 0.3279 -6588.53 -0.15 786.96 0.04
13 0.3443 -6530.72 -0.19 826.55 -0.18
14 0.9200 6073.55 -0.01 2163.74 0.03
15 0.9746 5379.42 0.09 2296.40 -0.10
16 1.0019 4849.85 0.17 2362.92 -0.19
17 1.0022 4843.91 -0.07 2363.76 -0.02
18 1.0074 4731.01 -0.11 2376.48 0.05
19 1.0076 4726.30 -0.34 2377.14 0.20
20 1.0732 3065.44 0.05 2535.34 -0.16
21 1.0732 3064.89 -0.06 2535.52 -0.02
22 1.0784 2922.78 0.19 2547.75 0.02
23 1.2150 -638.69 0.04 2862.37 0.06
24 1.2150 -639.70 0.07 2862.36 -0.06
25 1.2399 -1088.62 0.01 2916.79 0.05
26 1.2399 -1089.36 0.10 2916.83 -0.02
27 1.3053 -1742.95 -0.03 3055.38 -0.09
28 1.9413 10698.56 -0.05 4548.87 -0.07
29 2.1925 4721.45 0.00 5161.86 0.22
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.
15VC164 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.739 45.767 45.712 ecceobj 0.151 0.152 0.149 incobj 25.609 25.609 25.608 qmin 38.061 38.006 38.074 qmax 53.083 53.134 52.905 amean 45.364 45.392 45.338 amin 44.994 45.015 44.965 amax 45.787 45.817 45.743 emean 0.144 0.145 0.142 emin 0.131 0.132 0.130 emax 0.159 0.160 0.157 imean 24.663 24.664 24.662 imin 24.290 24.294 24.293 imax 24.988 25.005 24.984 excite_mean 0.441 0.442 0.441 fracstop 1.000 1.000 1.000 cjmean 2.872 2.872 2.872 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 170.1 170.5 170.3 kozaiamp 179.9 180.0 179.9