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: MA55494 # Created Wed Jun 4 01:12:15 2025 # Orbit generated from Bernstein formalism # Fitting 2 observations of 2 # Arc: 2.84h # First observation: 2006/12/21 # Last observation: 2006/12/21 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # Chi-squared of fit: 0.00 DOF: 0 RMS: 0.00 # Min/Max residuals: -0.00 0.00 # Exact a, adot, b, bdot, g, gdot: 2.539841E-05 1.049728E-01 -6.600321E-08 -2.728247E-04 6.535384E-02 0.000000E+00 # Covariance matrix: 1.6505E-10 6.7108E-07 1.7787E-12 7.3761E-09 1.0570E-07 0.0000E+00 6.7108E-07 2.7529E-03 7.2484E-09 3.0061E-05 4.3073E-04 0.0000E+00 1.7787E-12 7.2484E-09 9.3417E-13 2.3299E-09 1.1453E-09 0.0000E+00 7.3761E-09 3.0061E-05 2.3299E-09 2.8395E-05 4.7494E-06 0.0000E+00 1.0570E-07 4.3073E-04 1.1453E-09 4.7494E-06 6.8059E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 3.6731E-03 # lat0 lon0 xBary yBary zBary JD0 -24.803221 90.958452 0.032762 -0.414111 -0.896353 2454090.816164 # Heliocentric elements and errors Epoch: 2454090.5000 = 2006/12/21 Mean Anomaly: 357.34672 +/- 194.810 Argument of Peri: 272.46733 +/- 263.847 Long of Asc Node: 181.38989 +/- 7.672 Inclination: 23.34492 +/- 0.179 Eccentricity: 0.05624339 +/- 0.6670 Semi-Major Axis: 17.16342530 +/- 10.1180 Time of Perihelion: 2454281.9190 +/- 40026.0 Perihelion: 16.19809608 +/- 14.9083 Aphelion: 18.12875453 +/- 15.6617 Period (y) 71.1073 +/- 62.88 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -0.21890052 +/- 0.0292 Ecliptic Y 14.87161329 +/- 1.7531 Ecliptic Z -6.41895887 +/- 0.8103 Ecliptic XDOT -0.00439162 +/- 0.0016 Ecliptic YDOT -0.00008235 +/- 0.0023 Ecliptic ZDOT -0.00001044 +/- 0.0011 # Distances at JD0 (AU) Heliocenter to KBO 16.19925406 +/- 1.6411 Geocenter to KBO 15.30131981 +/- 1.9315 # Hcoef: 8.33
The following table shows the complete astrometric record for MA55494. 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 (MA55494) followed by the observatory code and reference code for the source of the astrometry.
2006 12 21.31541 06 03 28.867 -01 22 00.57 20.1R MA55494 695 2006 12 21.43359 06 03 27.454 -01 22 00.75 MA55494 695
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 0.00 0.00 -0.00
2 0.0003 -21.19 -0.00 -0.32 0.00
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.
MA55494 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