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: 15VU169 # Created Mon Apr 28 01:10:42 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 2.32y # First observation: 2015/08/20 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000108 0.023602 -0.000000 0.000654 0.024099 0.000000 # Chi-squared of fit: 3.26 DOF: 64 RMS: 0.05 # Min/Max residuals: -0.14 0.19 # Exact a, adot, b, bdot, g, gdot: 1.511012E-05 2.326193E-02 4.093284E-07 6.448531E-04 2.386125E-02 1.142018E-03 # Covariance matrix: 1.6550E-13 -1.1402E-14 -3.7370E-16 1.9754E-15 1.1364E-13 1.4823E-12 -1.1402E-14 3.3394E-13 -2.7269E-15 1.1535E-14 1.8535E-13 8.5279E-12 -3.7370E-16 -2.7269E-15 8.4119E-14 -6.0866E-14 -1.8523E-15 -9.3970E-14 1.9754E-15 1.1535E-14 -6.0866E-14 8.5710E-14 8.2589E-15 3.9633E-13 1.1364E-13 1.8535E-13 -1.8523E-15 8.2589E-15 2.2062E-13 6.1294E-12 1.4823E-12 8.5279E-12 -9.3970E-14 3.9633E-13 6.1294E-12 2.9296E-10 # lat0 lon0 xBary yBary zBary JD0 -0.118755 53.904605 1.012994 0.000012 -0.057101 2457255.045359 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 60.94510 +/- 0.599 Argument of Peri: 292.16027 +/- 0.679 Long of Asc Node: 56.79860 +/- 0.002 Inclination: 1.59032 +/- 0.001 Eccentricity: 0.02560008 +/- 0.0007 Semi-Major Axis: 42.48191287 +/- 0.0033 Time of Perihelion: 2440129.0396 +/- 168.3 Perihelion: 41.39437264 +/- 0.0291 Aphelion: 43.56945310 +/- 0.0291 Period (y) 276.8945 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.53795311 +/- 0.0005 Ecliptic Y 33.31312936 +/- 0.0007 Ecliptic Z -0.08682150 +/- 0.0000 Ecliptic XDOT -0.00208142 +/- 0.0000 Ecliptic YDOT 0.00167208 +/- 0.0000 Ecliptic ZDOT 0.00007377 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.97569743 +/- 0.0006 Geocenter to KBO 41.90895250 +/- 0.0008 # Hcoef: 7.57
The following table shows the complete astrometric record for 15VU169. 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 (15VU169) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.54457 03 26 13.952 +18 38 01.26 24.1w 15VU169 568 C~2nw3 2015 08 20.55007 03 26 13.957 +18 38 01.25 24.2w 15VU169 568 C~2nw3 2015 09 07.60044 03 26 07.617 +18 37 42.01 24.2w 15VU169 568 C~2nw3 2015 09 12.44733 03 26 00.691 +18 37 17.83 24.3w 15VU169 568 C~2nw3 2015 10 07.49766 03 24 52.887 +18 33 16.90 24.0w 15VU169 568 C~2nw3 2015 10 07.55607 03 24 52.668 +18 33 16.10 23.9w 15VU169 568 C~2nw3 2015 10 09.53675 03 24 45.288 +18 32 49.65 24.1w 15VU169 568 C~2nw3 2015 11 06.31257 03 22 40.809 +18 25 19.67 23.7r 15VU169 568 C~2nw3 2015 11 06.37589 03 22 40.490 +18 25 18.59 23.9r 15VU169 568 C~2nw3 2015 11 06.44667 03 22 40.117 +18 25 17.22 23.8r 15VU169 568 C~2nw3 2015 11 07.46686 03 22 35.051 +18 24 58.92 24.1w 15VU169 568 C~2nw3 2015 11 17.44798 03 21 44.894 +18 21 56.17 24.0w 15VU169 568 C~2nw3 2015 11 17.49527 03 21 44.650 +18 21 55.30 24.0w 15VU169 568 C~2nw3 2015 12 06.31417 03 20 12.674 +18 16 18.58 24.0w 15VU169 568 C~2nw3 2015 12 06.44064 03 20 12.065 +18 16 16.65 23.6w 15VU169 568 C~2nw3 2015 12 06.44787 03 20 12.043 +18 16 16.27 24.2w 15VU169 568 C~2nw3 2015 12 31.33561 03 18 33.509 +18 10 15.63 24.0w 15VU169 568 C~2nw3 2016 01 07.36493 03 18 13.452 +18 09 03.02 24.0w 15VU169 568 C~2nw3 2016 01 07.38230 03 18 13.399 +18 09 02.83 24.2w 15VU169 568 C~2nw3 2016 01 07.41708 03 18 13.311 +18 09 02.51 23.8w 15VU169 568 C~2nw3 2016 02 04.34615 03 17 38.242 +18 07 03.51 24.0w 15VU169 568 C~2nw3 2016 02 11.23523 03 17 41.416 +18 07 19.26 24.1w 15VU169 568 C~2nw3 2016 09 07.61412 03 31 33.806 +18 59 24.33 15VU169 568 C~2nw3 2016 09 27.53935 03 30 52.892 +18 57 06.04 24.1w 15VU169 568 C~2nw3 2016 10 09.53365 03 30 12.688 +18 54 47.79 24.0w 15VU169 568 C~2nw3 2016 10 09.60571 03 30 12.408 +18 54 46.81 24.0w 15VU169 568 C~2nw3 2016 11 02.47946 03 28 27.239 +18 48 40.72 23.9w 15VU169 568 C~2nw3 2016 11 04.45547 03 28 17.542 +18 48 06.69 23.9w 15VU169 568 C~2nw3 2016 12 24.34518 03 24 23.158 +18 34 17.61 23.9w 15VU169 568 C~2nw3 2016 12 29.39711 03 24 05.330 +18 33 14.48 23.7w 15VU169 568 C~2nw3 2017 01 27.31434 03 23 04.466 +18 29 43.69 24.1w 15VU169 568 C~2nw3 2017 09 15.55809 03 36 50.749 +19 19 56.47 24.1w 15VU169 568 C~2nw3 2017 09 20.60688 03 36 40.763 +19 19 24.34 24.1w 15VU169 568 C~2nw3 2017 12 13.36234 03 30 39.254 +18 59 05.07 23.9w 15VU169 568 C~2nw3 2017 12 13.40466 03 30 39.062 +18 59 04.34 24.2w 15VU169 568 C~2nw3
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 0.06 0.00 0.00
2 0.0000 0.07 0.09 -0.03 -0.03
3 0.0494 -92.01 -0.05 3.62 -0.00
4 0.0627 -193.38 -0.07 4.56 -0.03
5 0.1313 -1187.03 -0.01 10.61 0.03
6 0.1314 -1190.25 -0.02 10.61 0.00
7 0.1369 -1298.48 0.03 11.15 0.01
8 0.2129 -3125.81 0.10 19.48 -0.09
9 0.2131 -3130.48 0.10 19.57 -0.04
10 0.2133 -3135.96 -0.14 19.59 -0.08
11 0.2161 -3210.36 -0.02 20.06 0.02
12 0.2434 -3947.52 -0.02 23.70 0.02
13 0.2435 -3951.10 -0.04 23.73 0.03
14 0.2951 -5304.08 0.05 31.21 -0.07
15 0.2954 -5312.97 -0.07 31.56 0.19
16 0.2954 -5313.37 0.03 31.27 -0.10
17 0.3636 -6764.05 0.02 42.73 -0.06
18 0.3828 -7059.31 0.07 46.27 0.01
19 0.3829 -7060.09 -0.03 46.28 0.01
20 0.3830 -7061.38 0.01 46.29 0.01
21 0.4594 -7575.71 -0.02 60.50 0.05
22 0.4783 -7527.86 -0.04 64.01 0.04
23 1.0515 4718.08 0.03 137.72 0.03
24 1.1061 4121.21 -0.01 143.07 0.01
25 1.1389 3534.07 0.01 146.63 0.03
26 1.1391 3529.97 -0.03 146.64 0.01
27 1.2045 1992.66 -0.01 154.42 0.04
28 1.2099 1850.82 -0.01 155.07 0.01
29 1.3465 -1581.27 0.05 174.86 -0.04
30 1.3603 -1842.53 -0.12 177.11 -0.01
31 1.4395 -2733.50 0.00 190.24 0.05
32 2.0726 9378.45 -0.05 273.64 0.00
33 2.0864 9233.21 -0.01 275.29 0.02
34 2.3157 3962.10 0.06 305.27 -0.01
35 2.3158 3959.28 0.05 305.22 -0.09
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.
15VU169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.886 42.899 42.873 ecceobj 0.034 0.036 0.033 incobj 1.585 1.585 1.586 qmin 40.010 39.956 40.039 qmax 45.340 45.358 45.293 amean 42.563 42.576 42.551 amin 42.236 42.250 42.224 amax 42.914 42.921 42.897 emean 0.036 0.037 0.035 emin 0.010 0.012 0.009 emax 0.057 0.058 0.056 imean 1.353 1.350 1.356 imin 0.570 0.563 0.576 imax 1.883 1.881 1.884 excite_mean 0.044 0.045 0.043 fracstop 1.000 1.000 1.000 cjmean 3.082 3.082 3.082 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 193.0 192.2 194.7 kozaiamp 180.0 180.0 179.9