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: 01QU297 # Created Sun Dec 22 02:08:17 2024 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 23.17d # First observation: 2001/08/20 # Last observation: 2001/09/12 Preliminary a, adot, b, bdot, g, gdot: 0.000001 0.043226 -0.000000 -0.001290 0.026868 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # Chi-squared of fit: 2.56 DOF: 7 RMS: 0.12 # Min/Max residuals: -0.17 0.22 # Exact a, adot, b, bdot, g, gdot: 1.605141E-05 2.394723E-02 -1.176469E-06 -1.149035E-03 2.370992E-02 5.961146E-03 # Covariance matrix: 3.6541E-11 5.1345E-08 1.5593E-13 -3.7828E-10 8.4727E-09 -7.2364E-08 5.1345E-08 7.2969E-05 2.2149E-10 -5.3732E-07 1.2035E-05 -1.0617E-04 1.5593E-13 2.2149E-10 3.7775E-13 -7.7974E-12 3.6539E-11 -3.1731E-10 -3.7828E-10 -5.3732E-07 -7.7974E-12 4.2460E-09 -8.8643E-08 7.6839E-07 8.4727E-09 1.2035E-05 3.6539E-11 -8.8643E-08 1.9855E-06 -1.7245E-05 -7.2364E-08 -1.0617E-04 -3.1731E-10 7.6839E-07 -1.7245E-05 3.6519E-04 # lat0 lon0 xBary yBary zBary JD0 -1.745695 -34.525135 -0.023719 -0.030943 -1.011880 2452141.630443 # Heliocentric elements and errors Epoch: 2452140.5000 = 2001/08/19 Mean Anomaly: 38.64603 +/- 68.426 Argument of Peri: 144.41428 +/- 161.405 Long of Asc Node: 113.84173 +/- 7.928 Inclination: 3.24441 +/- 0.731 Eccentricity: 0.29838180 +/- 0.6730 Semi-Major Axis: 52.86712258 +/- 26.9044 Time of Perihelion: 2437068.2088 +/- 24079.2 Perihelion: 37.09253554 +/- 40.2755 Aphelion: 68.64170963 +/- 49.8602 Period (y) 384.4030 +/- 293.44 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.58267423 +/- 2.0640 Ecliptic Y -24.44129545 +/- 1.4201 Ecliptic Z -1.28489475 +/- 0.0764 Ecliptic XDOT 0.00212215 +/- 0.0016 Ecliptic YDOT 0.00189191 +/- 0.0018 Ecliptic ZDOT -0.00015338 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 43.18743548 +/- 1.8809 Geocenter to KBO 42.17643898 +/- 2.5065 # Hcoef: 6.03
The following table shows the complete astrometric record for 01QU297. 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 (01QU297) followed by the observatory code and reference code for the source of the astrometry.
2001 08 20.12970 21 53 23.62 -14 40 20.7 22.1R 01QU297 807 Cd7926 2001 08 20.20833 21 53 23.28 -14 40 22.7 01QU297 807 Cd7926 2001 08 21.14449 21 53 19.05 -14 40 45.1 01QU297 807 Cd7926 2001 08 21.21817 21 53 18.71 -14 40 47.1 01QU297 807 Cd7926 2001 09 12.24807 21 51 43.46 -14 49 03.8 21.9R 01QU297 695 Ch1433 2001 09 12.29536 21 51 43.26 -14 49 05.0 01QU297 695 Ch1433
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 -0.02 0.00 0.08
2 0.0002 -5.32 0.22 -0.21 -0.11
3 0.0028 -70.66 -0.06 -0.50 0.11
4 0.0030 -75.98 -0.17 -0.71 -0.09
5 0.0633 -1544.25 0.08 -1.40 0.10
6 0.0634 -1547.38 -0.08 -1.55 -0.10
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.
01QU297 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