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: 03QD112 # Created Fri May 2 02:36:52 2008 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 5.23y # First observation: 2002/08/20 # Last observation: 2007/11/11 Preliminary a, adot, b, bdot, g, gdot: 0.021649 0.157365 0.006786 0.039459 0.088197 0.000000 # Chi-squared of fit: 51.57 DOF: 20 RMS: 0.35 # Min/Max residuals: -0.79 0.61 # Exact a, adot, b, bdot, g, gdot: 3.323531E-05 2.127976E-01 1.213385E-05 5.503745E-02 1.048976E-01 1.083804E-01 # Covariance matrix: 4.8511E-13 -4.7740E-13 6.4026E-14 -1.2010E-13 3.7981E-14 -5.4068E-13 -4.7740E-13 1.2469E-12 -1.6518E-13 3.0545E-13 6.4940E-13 1.3317E-12 6.4026E-14 -1.6518E-13 2.6415E-13 -1.2101E-13 -7.0641E-14 -1.9218E-13 -1.2010E-13 3.0545E-13 -1.2101E-13 1.3984E-13 1.2664E-13 3.5680E-13 3.7981E-14 6.4940E-13 -7.0641E-14 1.2664E-13 9.5496E-13 5.1227E-13 -5.4068E-13 1.3317E-12 -1.9218E-13 3.5680E-13 5.1227E-13 1.5699E-12 # lat0 lon0 xBary yBary zBary JD0 -4.344513 -12.971632 0.347660 -0.072288 -0.950791 2452506.957063 # Heliocentric elements and errors Epoch: 2452500.5000 = 2002/08/14 Mean Anomaly: 18.35746 +/- 0.002 Argument of Peri: 274.00988 +/- 0.002 Long of Asc Node: 0.61832 +/- 0.000 Inclination: 14.50926 +/- 0.000 Eccentricity: 0.58080533 +/- 0.0000 Semi-Major Axis: 18.96513406 +/- 0.0013 Time of Perihelion: 2450962.1952 +/- 0.0 Perihelion: 7.95008303 +/- 0.0007 Aphelion: 29.98018508 +/- 0.0021 Period (y) 82.5928 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 10.11401978 +/- 0.0001 Ecliptic Y -2.68102496 +/- 0.0000 Ecliptic Z -0.72202763 +/- 0.0000 Ecliptic XDOT 0.00409369 +/- 0.0000 Ecliptic YDOT 0.00475207 +/- 0.0000 Ecliptic ZDOT 0.00121828 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 10.48821314 +/- 0.0001 Geocenter to KBO 9.53310740 +/- 0.0001 # Hcoef: 10.74
The following table shows the complete astrometric record for 03QD112. 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 (03QD112) followed by the observatory code and reference code for the source of the astrometry.
2002 08 20.45632 23 19 06.68 -09 07 18.6 20.2R 03QD112 644 Ck9589 2002 08 29.49175 23 16 48.46 -09 17 52.7 20.2R 03QD112 644 Ck9589 2002 09 15.44024 23 12 15.04 -09 37 13.5 20.6R 03QD112 644 Ck9589 2003 08 26.29534 23 53 52.95 -02 12 15.2 20.3R 03QD112 807 Ci4592 2003 08 26.40006 23 53 51.56 -02 12 21.4 03QD112 807 Ci4592 2003 09 03.13917 23 52 05.71 -02 20 33.3 21.3R 03QD112 304 Ci4592 2003 09 03.26274 23 52 03.91 -02 20 42.3 03QD112 304 Ci4592 2003 10 22.15454 23 40 35.22 -03 11 33.7 21.5R 03QD112 695 Cj4700 2003 10 22.24844 23 40 34.13 -03 11 37.6 03QD112 695 Cj4700 2003 12 17.21507 23 37 28.00 -03 03 49.7 22.0R 03QD112 568 Ck9589 2003 12 17.25579 23 37 28.20 -03 03 47.2 03QD112 568 Ck9589 2007 11 11.26234 01 14 23.00 +14 39 52.8 22.4R 03QD112 688 Cw6790 2007 11 11.32366 01 14 22.32 +14 39 49.9 03QD112 688 Cw6790
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 -0.24 0.00 -0.79 2 0.0247 -2131.45 -0.24 218.58 0.54 3 0.0711 -6311.48 0.50 725.93 0.14 4 1.0153 38981.37 -0.37 10468.37 -0.17 5 1.0156 38959.03 -0.15 10471.13 -0.11 6 1.0368 37251.96 0.61 10661.80 0.29 7 1.0371 37222.70 0.11 10664.44 -0.40 8 1.1710 26285.69 0.04 12015.49 0.30 9 1.1712 26268.89 -0.05 12018.45 0.39 10 1.3245 23869.23 -0.05 13573.67 -0.06 11 1.3246 23873.04 -0.19 13574.79 -0.07 12 5.2260 150091.49 0.05 44113.81 -0.65 13 5.2262 150075.70 -0.03 44114.14 0.60
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.
03QD112 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 19.100 19.100 19.100 ecceobj 0.583 0.583 0.583 incobj 14.492 14.492 14.492 qmin 7.934 7.737 7.779 qmax 32.340 32.629 30.240 amean 19.612 18.593 17.781 amin 18.934 15.961 16.295 amax 20.324 20.395 19.100 emean 0.586 0.569 0.552 emin 0.578 0.510 0.522 emax 0.591 0.600 0.583 imean 15.677 14.616 15.771 imin 14.846 12.715 14.846 imax 16.094 15.995 16.426 fracstop 0.001 0.003 0.001 cjmean 2.792 2.872 2.927 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 284.9 297.9 279.3 kozaiamp 10.4 179.5 4.9