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: 15VX166
# Created Sun Dec 22 02:10:34 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 31
# Arc: 2.04y
# First observation: 2015/09/07
# Last observation: 2017/09/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000065 0.018245 0.000001 0.000966 0.021126 0.000000
# Chi-squared of fit: 8.26 DOF: 54 RMS: 0.09
# Min/Max residuals: -0.30 0.32
# Exact a, adot, b, bdot, g, gdot:
1.383145E-05 1.808164E-02 6.204083E-07 9.595631E-04 2.104223E-02 -1.021947E-03
# Covariance matrix:
2.1888E-13 -5.9779E-14 -1.3359E-15 4.5134E-15 1.5299E-13 2.5945E-12
-5.9779E-14 2.9892E-13 -3.3305E-15 1.4300E-14 1.3881E-13 8.3112E-12
-1.3359E-15 -3.3305E-15 1.1399E-13 -9.5296E-14 -3.6307E-15 -1.7621E-13
4.5134E-15 1.4300E-14 -9.5296E-14 1.3862E-13 1.4047E-14 7.4676E-13
1.5299E-13 1.3881E-13 -3.6307E-15 1.4047E-14 2.7409E-13 8.1278E-12
2.5945E-12 8.3112E-12 -1.7621E-13 7.4676E-13 8.1278E-12 4.3379E-10
# lat0 lon0 xBary yBary zBary JD0
0.376098 52.122532 0.934524 0.002682 -0.385852 2457273.129809
# Heliocentric elements and errors
Epoch: 2457270.5000 = 2015/09/05
Mean Anomaly: 222.42717 +/- 0.386
Argument of Peri: 153.27190 +/- 0.381
Long of Asc Node: 44.05158 +/- 0.003
Inclination: 3.07705 +/- 0.001
Eccentricity: 0.12680557 +/- 0.0006
Semi-Major Axis: 43.56092217 +/- 0.0068
Time of Perihelion: 2497400.9665 +/- 112.4
Perihelion: 38.03715469 +/- 0.0268
Aphelion: 49.08468966 +/- 0.0272
Period (y) 287.5106 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 30.14805606 +/- 0.0007
Ecliptic Y 37.24126151 +/- 0.0009
Ecliptic Z 0.31198583 +/- 0.0000
Ecliptic XDOT -0.00194101 +/- 0.0000
Ecliptic YDOT 0.00133245 +/- 0.0000
Ecliptic ZDOT 0.00012403 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.91569866 +/- 0.0009
Geocenter to KBO 47.52348644 +/- 0.0012
# Hcoef: 8.34
The following table shows the complete astrometric record for 15VX166. 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 (15VX166) followed by the observatory code and reference code for the source of the astrometry.
2015 09 07.62902 03 18 25.533 +18 39 44.65 25.4w 15VX166 568 C~2lVg 2015 09 12.49264 03 18 18.245 +18 39 21.93 25.3w 15VX166 568 C~2lVg 2015 10 07.53854 03 17 13.339 +18 35 38.89 25.7w 15VX166 568 C~2lVg 2015 10 07.59790 03 17 13.124 +18 35 38.19 26.0w 15VX166 568 C~2lVg 2015 10 09.57780 03 17 06.291 +18 35 13.70 25.4w 15VX166 568 C~2lVg 2015 11 07.33264 03 15 08.874 +18 28 04.20 24.8r 15VX166 568 C~2lVg 2015 11 07.37479 03 15 08.686 +18 28 03.61 25.1r 15VX166 568 C~2lVg 2015 11 07.41697 03 15 08.492 +18 28 02.86 25.3r 15VX166 568 C~2lVg 2015 11 10.49950 03 14 54.702 +18 27 11.40 25.8w 15VX166 568 C~2lVg 2015 11 17.34635 03 14 23.956 +18 25 16.25 25.2w 15VX166 568 C~2lVg 2015 11 17.39294 03 14 23.744 +18 25 15.51 25.6w 15VX166 568 C~2lVg 2015 12 06.35508 03 13 01.708 +18 20 04.27 25.1w 15VX166 568 C~2lVg 2015 12 06.49265 03 13 01.168 +18 20 02.22 24.9w 15VX166 568 C~2lVg 2016 01 01.34294 03 11 32.419 +18 14 20.04 25.5w 15VX166 568 C~2lVg 2016 01 07.40549 03 11 17.678 +18 13 22.37 25.8w 15VX166 568 C~2lVg 2016 01 08.25043 03 11 15.852 +18 13 15.44 25.4w 15VX166 568 C~2lVg 2016 02 10.30227 03 10 50.603 +18 11 37.56 25.1w 15VX166 568 C~2lVg 2016 09 07.57363 03 22 34.996 +18 58 44.30 25.6w 15VX166 568 C~2lVg 2016 09 27.51061 03 21 54.038 +18 56 33.52 25.4w 15VX166 568 C~2lVg 2016 09 29.48481 03 21 48.438 +18 56 14.58 25.3w 15VX166 568 C~2lVg 2016 10 05.48792 03 21 29.835 +18 55 11.23 25.3w 15VX166 568 C~2lVg 2016 10 07.49247 03 21 23.142 +18 54 48.66 25.0w 15VX166 568 C~2lVg 2016 10 07.58817 03 21 22.795 +18 54 47.12 25.2w 15VX166 568 C~2lVg 2016 10 09.49252 03 21 16.231 +18 54 24.45 25.1w 15VX166 568 C~2lVg 2016 10 09.56525 03 21 15.959 +18 54 23.55 25.5w 15VX166 568 C~2lVg 2016 11 04.40663 03 19 31.217 +18 48 11.70 25.4w 15VX166 568 C~2lVg 2017 01 02.40920 03 15 37.350 +18 33 42.45 25.8w 15VX166 568 C~2lVg 2017 01 02.42780 03 15 37.294 +18 33 41.98 25.7w 15VX166 568 C~2lVg 2017 01 27.27995 03 14 56.826 +18 31 06.21 25.1w 15VX166 568 C~2lVg 2017 09 15.60695 03 26 34.884 +19 16 53.60 23.8w 15VX166 568 C~2lVg 2017 09 22.59291 03 26 20.244 +19 16 08.50 25.5w 15VX166 568 C~2lVg
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 0.02
2 0.0133 -105.93 0.02 4.76 0.02
3 0.0819 -1054.83 0.05 27.96 0.04
4 0.0821 -1057.97 -0.07 28.07 0.09
5 0.0875 -1158.14 -0.03 29.63 -0.03
6 0.1662 -2882.51 0.02 50.65 -0.07
7 0.1663 -2885.25 0.09 50.78 0.02
8 0.1664 -2888.11 0.03 50.78 -0.03
9 0.1749 -3090.98 0.10 52.60 -0.09
10 0.1936 -3543.50 0.02 56.49 0.04
11 0.1937 -3546.61 0.03 56.57 0.08
12 0.2457 -4755.62 0.00 64.78 0.02
13 0.2460 -4763.58 ( 0.44) 64.84 ( 0.01)
14 0.3168 -6073.98 -0.08 71.19 0.01
15 0.3334 -6291.96 -0.08 71.72 -0.30
16 0.3357 -6318.91 -0.02 71.99 -0.09
17 0.4262 -6692.12 -0.02 73.96 0.21
18 1.0019 3715.78 -0.09 198.98 0.02
19 1.0565 3120.39 -0.10 219.20 -0.00
20 1.0619 3038.71 0.05 220.98 -0.11
21 1.0783 2767.26 0.05 226.58 -0.13
22 1.0838 2669.65 0.20 228.85 0.32
23 1.0841 2664.50 -0.10 228.61 -0.03
24 1.0893 2568.63 0.02 230.32 0.01
25 1.0895 2564.67 -0.13 230.43 0.04
26 1.1602 1032.06 -0.01 250.18 -0.06
27 1.3218 -2402.96 0.15 271.05 0.16
28 1.3218 -2403.85 -0.01 270.80 -0.08
29 1.3899 -3000.18 -0.07 271.27 -0.02
30 2.0232 7282.24 0.02 406.29 0.02
31 2.0423 7069.98 0.00 413.73 -0.07
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.
15VX166 quality flag:2 Type: 7:4EEE 7:4EEE SCATNEAR axisobj 43.913 43.930 43.897 ecceobj 0.117 0.119 0.116 incobj 3.062 3.062 3.062 qmin 37.588 37.539 37.354 qmax 50.421 50.458 50.673 amean 43.726 43.726 43.749 amin 43.282 43.282 43.264 amax 44.215 44.225 44.222 emean 0.125 0.128 0.111 emin 0.110 0.116 0.082 emax 0.140 0.141 0.146 imean 1.889 1.985 1.958 imin 0.804 1.025 0.462 imax 2.831 2.898 2.882 excite_mean 0.130 0.133 0.117 fracstop 1.000 1.000 1.000 cjmean 3.078 3.077 3.081 libcent 0 177.2 181.3 -180.0 libamp 0 154.1 134.3 -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 156.7 186.7 186.7 kozaiamp 180.0 179.9 179.9