The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 03QW90 # Created Fri May 2 02:36:52 2008 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 3.05y # First observation: 2002/09/11 # Last observation: 2005/09/29 Preliminary a, adot, b, bdot, g, gdot: -0.000056 0.021178 -0.000010 0.003634 0.022769 0.000000 # Chi-squared of fit: 48.57 DOF: 24 RMS: 0.32 # Min/Max residuals: -0.88 0.52 # Exact a, adot, b, bdot, g, gdot: 1.492424E-05 2.108849E-02 -2.655019E-08 3.620779E-03 2.296812E-02 -1.556462E-03 # Covariance matrix: 6.8465E-13 -8.7872E-13 6.6412E-14 -1.2743E-13 -4.5497E-13 -1.0080E-11 -8.7872E-13 1.5236E-12 -1.2742E-13 2.4451E-13 8.7063E-13 1.9340E-11 6.6412E-14 -1.2742E-13 3.0511E-13 -1.5043E-13 -8.2329E-14 -1.7159E-12 -1.2743E-13 2.4451E-13 -1.5043E-13 1.2608E-13 1.5481E-13 3.2906E-12 -4.5497E-13 8.7063E-13 -8.2329E-14 1.5481E-13 1.6152E-12 1.2427E-11 -1.0080E-11 1.9340E-11 -1.7159E-12 3.2906E-12 1.2427E-11 2.6040E-10 # lat0 lon0 xBary yBary zBary JD0 -3.637030 -1.879923 0.175690 -0.063039 -0.990908 2452528.806743 # Heliocentric elements and errors Epoch: 2452520.5000 = 2002/09/03 Mean Anomaly: 261.78574 +/- 0.195 Argument of Peri: 87.04892 +/- 0.170 Long of Asc Node: 17.76068 +/- 0.001 Inclination: 10.36634 +/- 0.001 Eccentricity: 0.08105863 +/- 0.0007 Semi-Major Axis: 43.74857229 +/- 0.0096 Time of Perihelion: 2481355.2577 +/- 56.6 Perihelion: 40.20237317 +/- 0.0324 Aphelion: 47.29477142 +/- 0.0328 Period (y) 289.3703 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.41362701 +/- 0.0024 Ecliptic Y -1.62775432 +/- 0.0001 Ecliptic Z -2.76187003 +/- 0.0002 Ecliptic XDOT -0.00008287 +/- 0.0000 Ecliptic YDOT 0.00251474 +/- 0.0000 Ecliptic ZDOT 0.00044271 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.52917891 +/- 0.0024 Geocenter to KBO 43.53860053 +/- 0.0024 # Hcoef: 4.61
The following table shows the complete astrometric record for 03QW90. 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 (03QW90) followed by the observatory code and reference code for the source of the astrometry.
2002 09 11.30600 23 58 53.77 -04 05 03.4 20.9R 03QW90 644 Ci6964 2002 09 13.30601 23 58 45.33 -04 05 55.6 21.3R 03QW90 644 Ci6964 2003 08 23.33636 00 04 15.67 -03 16 40.8 19.9R 03QW90 807 Ci4137 2003 08 25.29373 00 04 08.62 -03 17 27.4 03QW90 807 Ci4137 2003 08 25.39370 00 04 08.24 -03 17 29.7 03QW90 807 Ci4137 2003 09 03.04640 00 03 35.14 -03 21 03.7 21.6R 03QW90 621 Ci4587 2003 09 04.03354 00 03 31.17 -03 21 29.8 21.2R 03QW90 621 Ci4587 2003 10 01.47911 00 01 34.97 -03 33 12.3 19.8R 03QW90 568 Ci6964 2003 10 02.47043 00 01 30.81 -03 33 37.5 20.6R 03QW90 568 Ci6964 2003 10 02.50978 00 01 30.60 -03 33 38.4 03QW90 568 Ci6964 2005 08 09.18521 00 13 10.79 -01 50 53.0 20.0R 03QW90 807 Co3932 2005 08 10.16987 00 13 08.11 -01 51 11.6 03QW90 807 Co3932 2005 08 10.30462 00 13 07.71 -01 51 14.1 03QW90 807 Co3932 2005 09 29.28476 00 09 56.27 -02 11 17.6 21.2R 03QW90 688 Co3932 2005 09 29.35631 00 09 55.97 -02 11 19.4 03QW90 688 Co3932
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 -0.08 0.00 0.52 2 0.0055 -136.62 -0.04 2.45 0.30 3 0.9474 5578.08 0.03 737.38 0.31 4 0.9527 5462.59 0.20 736.89 0.07 5 0.9530 5456.45 0.13 737.06 0.20 6 0.9767 4916.22 0.29 739.08 0.05 7 0.9794 4851.26 -0.52 738.92 -0.75 8 1.0545 2974.96 -0.17 790.00 0.32 9 1.0573 2907.78 0.38 791.76 -0.88 10 1.0574 2904.54 -0.15 792.19 -0.58 11 2.9100 15013.30 -0.14 2243.51 0.21 12 2.9127 14968.80 0.13 2242.59 -0.03 13 2.9131 14962.27 -0.08 2242.71 0.13 14 3.0499 11837.35 -0.08 2290.90 0.11 15 3.0501 11832.49 0.11 2291.05 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.
03QW90 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.086 44.086 44.086 ecceobj 0.079 0.079 0.079 incobj 10.330 10.330 10.330 qmin 39.518 39.553 39.485 qmax 48.418 48.373 48.436 amean 43.836 43.836 43.836 amin 43.493 43.480 43.485 amax 44.210 44.206 44.212 emean 0.081 0.081 0.081 emin 0.068 0.068 0.068 emax 0.096 0.095 0.096 imean 10.043 10.043 10.043 imin 9.408 9.407 9.410 imax 10.564 10.564 10.565 fracstop 1.000 1.000 1.000 cjmean 3.055 3.055 3.054 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 183.3 183.2 183.1 kozaiamp 180.0 180.0 180.0