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: 12UU177 # Created Fri Nov 1 01:09:09 2024 # Orbit generated from Bernstein formalism # Fitting 7 observations of 7 # Arc: 1.99d # First observation: 2012/10/19 # Last observation: 2012/10/21 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # Chi-squared of fit: 3.24 DOF: 10 RMS: 0.12 # Min/Max residuals: -0.26 0.27 # Exact a, adot, b, bdot, g, gdot: 1.484187E-05 2.133127E-02 -1.748002E-06 -2.177491E-03 2.267127E-02 0.000000E+00 # Covariance matrix: 2.9064E-11 4.0064E-08 -9.8141E-13 -1.2504E-09 6.4310E-09 0.0000E+00 4.0064E-08 5.7503E-05 -1.4009E-09 -1.7846E-06 9.1787E-06 0.0000E+00 -9.8141E-13 -1.4009E-09 8.9780E-13 -1.4406E-10 -2.2382E-10 0.0000E+00 -1.2504E-09 -1.7846E-06 -1.4406E-10 1.0925E-07 -2.8514E-07 0.0000E+00 6.4310E-09 9.1787E-06 -2.2382E-10 -2.8514E-07 1.4665E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.5334E-04 # lat0 lon0 xBary yBary zBary JD0 15.413671 35.007326 0.150865 0.260998 -0.946480 2456220.015118 # Heliocentric elements and errors Epoch: 2456220.5000 = 2012/10/20 Mean Anomaly: 350.98666 +/- 190.447 Argument of Peri: 119.85314 +/- 258.496 Long of Asc Node: 283.68038 +/- 5.247 Inclination: 16.11312 +/- 0.559 Eccentricity: 0.02528592 +/- 0.5600 Semi-Major Axis: 46.21217128 +/- 24.0962 Time of Perihelion: 2459093.3732 +/- 404930.3 Perihelion: 45.04365419 +/- 34.9486 Aphelion: 47.38068836 +/- 35.7790 Period (y) 314.1541 +/- 245.71 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.72111745 +/- 1.8605 Ecliptic Y 24.83673001 +/- 1.3029 Ecliptic Z 11.72338750 +/- 0.6262 Ecliptic XDOT -0.00142655 +/- 0.0013 Ecliptic YDOT 0.00215218 +/- 0.0010 Ecliptic ZDOT -0.00025337 +/- 0.0004 # Distances at JD0 (AU) Heliocenter to KBO 45.05884158 +/- 1.6486 Geocenter to KBO 44.10868872 +/- 2.3561 # Hcoef: 8.47
The following table shows the complete astrometric record for 12UU177. 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 (12UU177) followed by the observatory code and reference code for the source of the astrometry.
2012 10 19.51434 01 47 51.101 +27 38 07.44 24.5r 12UU177 568 C~1CL9 2012 10 20.42535 01 47 46.732 +27 37 45.76 24.8r 12UU177 568 C~1CL9 2012 10 21.40942 01 47 42.003 +27 37 22.16 25.2r 12UU177 568 C~1CL9 2012 10 21.44796 01 47 41.817 +27 37 21.56 24.8r 12UU177 568 C~1CL9 2012 10 21.48638 01 47 41.627 +27 37 20.05 24.7r 12UU177 568 C~1CL9 2012 10 21.50363 01 47 41.534 +27 37 19.97 25.3r 12UU177 568 C~1CL9 2012 10 21.50789 01 47 41.515 +27 37 19.72 25.0r 12UU177 568 C~1CL9
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 0.01 0.00 0.05
2 0.0025 -61.96 -0.02 1.20 -0.09
3 0.0052 -129.09 0.02 2.38 -0.03
4 0.0053 -131.61 0.17 2.73 0.27
5 0.0054 -134.51 -0.06 2.26 -0.26
6 0.0054 -135.69 -0.04 2.64 0.11
7 0.0055 -136.02 -0.07 2.50 -0.04
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.
12UU177 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