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: 15OU194 # Created Wed May 21 01:10:34 2025 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 8.10d # First observation: 2015/07/12 # Last observation: 2015/07/20 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.072144 -0.000001 -0.001549 0.048865 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 4.72 DOF: 17 RMS: 0.12 # Min/Max residuals: -0.21 0.21 # Exact a, adot, b, bdot, g, gdot: 2.054338E-05 6.273975E-02 -9.762388E-07 1.650243E-04 4.669412E-02 -1.383757E-02 # Covariance matrix: 1.8384E-12 5.0851E-09 -4.6180E-13 -9.4447E-10 1.1367E-09 5.8975E-08 5.0851E-09 1.6595E-05 -1.4842E-09 -3.0797E-06 3.6856E-06 1.7192E-04 -4.6180E-13 -1.4842E-09 3.8398E-13 2.6243E-10 -3.3082E-10 -1.6973E-08 -9.4447E-10 -3.0797E-06 2.6243E-10 5.7304E-07 -6.8370E-07 -3.1464E-05 1.1367E-09 3.6856E-06 -3.3082E-10 -6.8370E-07 8.1951E-07 3.9412E-05 5.8975E-08 1.7192E-04 -1.6973E-08 -3.1464E-05 3.9412E-05 3.4597E-03 # lat0 lon0 xBary yBary zBary JD0 12.387119 -25.108332 0.721225 0.154069 -0.701071 2457215.937109 # Heliocentric elements and errors Epoch: 2457210.5000 = 2015/07/07 Mean Anomaly: 297.18295 +/- 62.228 Argument of Peri: 179.49047 +/- 20.959 Long of Asc Node: 245.19363 +/- 2.467 Inclination: 11.99217 +/- 0.026 Eccentricity: 0.25355628 +/- 0.9311 Semi-Major Axis: 23.47334995 +/- 9.5671 Time of Perihelion: 2464458.7991 +/- 5649.8 Perihelion: 17.52153454 +/- 22.9931 Aphelion: 29.42516535 +/- 24.9302 Period (y) 113.7289 +/- 69.53 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 19.28154399 +/- 0.3672 Ecliptic Y -9.83344650 +/- 0.1721 Ecliptic Z 4.59410448 +/- 0.0891 Ecliptic XDOT 0.00083921 +/- 0.0031 Ecliptic YDOT 0.00366193 +/- 0.0013 Ecliptic ZDOT -0.00016453 +/- 0.0007 # Distances at JD0 (AU) Heliocenter to KBO 22.12646390 +/- 0.3295 Geocenter to KBO 21.41597437 +/- 0.4152 # Hcoef: 11.64
The following table shows the complete astrometric record for 15OU194. 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 (15OU194) followed by the observatory code and reference code for the source of the astrometry.
2015 07 12.43632 22 08 56.80 +01 49 52.2 24.8z 15OU194 T09 C~8suy 2015 07 12.44709 22 08 56.73 +01 49 52.0 24.8z 15OU194 T09 C~8suy 2015 07 12.46334 22 08 56.64 +01 49 51.7 24.5z 15OU194 T09 C~8suy 2015 07 12.46603 22 08 56.62 +01 49 51.7 25.1z 15OU194 T09 C~8suy 2015 07 12.49036 22 08 56.50 +01 49 51.5 24.1z 15OU194 T09 C~8suy 2015 07 15.48896 22 08 39.32 +01 49 30.2 25.5r 15OU194 T09 C~8suy 2015 07 15.50627 22 08 39.23 +01 49 30.4 25.7r 15OU194 T09 C~8suy 2015 07 20.43527 22 08 08.85 +01 48 33.9 24.6i 15OU194 T09 C~8suy 2015 07 20.45573 22 08 08.71 +01 48 33.4 24.9i 15OU194 T09 C~8suy 2015 07 20.49397 22 08 08.46 +01 48 33.1 25.4i 15OU194 T09 C~8suy 2015 07 20.53526 22 08 08.19 +01 48 32.4 25.3i 15OU194 T09 C~8suy
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 0.14 0.00 0.21
2 0.0000 -1.05 -0.03 0.19 0.13
3 0.0001 -2.42 -0.08 0.40 -0.08
4 0.0001 -2.70 -0.14 0.51 -0.04
5 0.0001 -4.45 0.10 0.97 -0.21
6 0.0084 -252.38 -0.16 73.93 -0.13
7 0.0084 -253.57 0.17 74.60 0.12
8 0.0219 -698.79 0.07 186.07 0.05
9 0.0220 -700.93 -0.09 186.36 -0.12
10 0.0221 -704.54 0.02 187.43 0.10
11 0.0222 -708.56 0.01 188.24 -0.02
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.
15OU194 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