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: 15OS192 # Created Sun Apr 27 01:10:31 2025 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 7.05d # First observation: 2015/07/15 # Last observation: 2015/07/22 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.024626 0.000000 -0.002083 0.024600 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # Chi-squared of fit: 3.67 DOF: 17 RMS: 0.10 # Min/Max residuals: -0.16 0.26 # Exact a, adot, b, bdot, g, gdot: 1.489824E-05 2.318096E-02 -8.339818E-07 -1.843415E-03 2.424178E-02 5.095510E-03 # Covariance matrix: 1.4963E-11 2.2831E-08 -2.6017E-12 -3.8500E-09 5.1019E-09 -4.4888E-08 2.2831E-08 3.6011E-05 -4.0987E-09 -6.0654E-06 8.0374E-06 -7.1468E-05 -2.6017E-12 -4.0987E-09 9.2073E-13 6.6456E-10 -9.1487E-10 8.0703E-09 -3.8500E-09 -6.0654E-06 6.6456E-10 1.0237E-06 -1.3538E-06 1.2063E-05 5.1019E-09 8.0374E-06 -9.1487E-10 -1.3538E-06 1.7940E-06 -1.5714E-05 -4.4888E-08 -7.1468E-05 8.0703E-09 1.2063E-05 -1.5714E-05 8.3803E-04 # lat0 lon0 xBary yBary zBary JD0 10.096294 -20.276225 0.745340 0.121539 -0.682042 2457218.953199 # Heliocentric elements and errors Epoch: 2457210.5000 = 2015/07/07 Mean Anomaly: 73.01727 +/- 128.696 Argument of Peri: 17.45176 +/- 97.339 Long of Asc Node: 225.00403 +/- 7.240 Inclination: 10.82214 +/- 0.571 Eccentricity: 0.19837125 +/- 1.2208 Semi-Major Axis: 42.77103682 +/- 21.3438 Time of Perihelion: 2436487.8081 +/- 33067.3 Perihelion: 34.28649266 +/- 54.9471 Aphelion: 51.25558098 +/- 58.1435 Period (y) 279.7260 +/- 209.38 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 38.48398637 +/- 2.1048 Ecliptic Y -15.01299895 +/- 0.7777 Ecliptic Z 7.23146819 +/- 0.3996 Ecliptic XDOT 0.00147069 +/- 0.0030 Ecliptic YDOT 0.00224053 +/- 0.0014 Ecliptic ZDOT -0.00010402 +/- 0.0006 # Distances at JD0 (AU) Heliocenter to KBO 41.93687490 +/- 1.9527 Geocenter to KBO 41.25109200 +/- 2.2792 # Hcoef: 8.62
The following table shows the complete astrometric record for 15OS192. 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 (15OS192) followed by the observatory code and reference code for the source of the astrometry.
2015 07 15.45241 22 29 57.09 +01 26 22.7 25.0r 15OS192 T09 C~8nco 2015 07 15.46937 22 29 57.03 +01 26 22.7 25.0r 15OS192 T09 C~8nco 2015 07 15.55122 22 29 56.78 +01 26 22.0 25.1r 15OS192 T09 C~8nco 2015 07 21.45521 22 29 37.98 +01 25 27.9 24.6i 15OS192 T09 C~8nco 2015 07 21.51429 22 29 37.78 +01 25 27.2 24.8i 15OS192 T09 C~8nco 2015 07 21.57675 22 29 37.56 +01 25 26.3 24.7i 15OS192 T09 C~8nco 2015 07 21.60639 22 29 37.47 +01 25 26.2 24.7i 15OS192 T09 C~8nco 2015 07 22.43822 22 29 34.66 +01 25 16.8 24.7z 15OS192 T09 C~8nco 2015 07 22.45439 22 29 34.61 +01 25 16.9 24.8z 15OS192 T09 C~8nco 2015 07 22.47331 22 29 34.53 +01 25 16.8 24.1z 15OS192 T09 C~8nco 2015 07 22.50032 22 29 34.44 +01 25 16.1 24.3z 15OS192 T09 C~8nco
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 -0.08
2 0.0000 -0.83 -0.02 0.34 0.09
3 0.0003 -4.57 -0.01 1.09 -0.01
4 0.0164 -286.30 -0.01 56.12 0.10
5 0.0166 -289.35 0.01 56.59 0.02
6 0.0168 -292.74 -0.14 56.99 -0.16
7 0.0168 -294.03 0.11 57.40 -0.02
8 0.0191 -336.63 -0.03 64.41 -0.15
9 0.0192 -337.29 0.16 64.78 0.07
10 0.0192 -338.44 0.01 65.14 0.26
11 0.0193 -339.96 -0.08 64.99 -0.13
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.
15OS192 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0