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: 127546
# Created Fri May 2 02:36:21 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 33 observations of 33
# Arc: 3.15y
# First observation: 2002/12/04
# Last observation: 2006/01/28
# Chi-squared of fit: 217.14 DOF: 60 RMS: 0.45
# Min/Max residuals: -0.76 1.37
# Exact a, adot, b, bdot, g, gdot:
6.104284E-06 1.714020E-02 2.689294E-05 7.902844E-02 4.750603E-02 -1.544322E-02
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
0.701832 91.322340 0.327291 0.011324 -0.925140 2452612.870803
# Heliocentric elements and errors
Epoch: 2452610.5000 = 2002/12/02
Mean Anomaly: 356.24336 +/- 0.000
Argument of Peri: 27.91498 +/- 0.000
Long of Asc Node: 90.32719 +/- 0.000
Inclination: 77.84546 +/- 0.000
Eccentricity: 0.68878811 +/- 0.0000
Semi-Major Axis: 67.44315299 +/- 0.0000
Time of Perihelion: 2454721.5703 +/- 0.0
Perihelion: 20.98911127 +/- 0.0000
Aphelion: 113.89719470 +/- 0.0000
Period (y) 553.8791 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -0.18117482 +/- 0.0000
Ecliptic Y 21.98017085 +/- 0.0000
Ecliptic Z 0.25840538 +/- 0.0000
Ecliptic XDOT -0.00097303 +/- 0.0000
Ecliptic YDOT -0.00097202 +/- 0.0000
Ecliptic ZDOT 0.00454350 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 21.98254637 +/- 0.0000
Geocenter to KBO 21.05010343 +/- 0.0000
# Hcoef: 7.93
The following table shows the complete astrometric record for 127546. 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 (127546) followed by the observatory code and reference code for the source of the astrometry.
2002 12 04.37006 06 05 47.74 +24 08 04.1 20.8R 127546 695 Ch0145 2002 12 04.47819 06 05 46.52 +24 08 09.3 127546 695 Ch0145 2002 12 05.36248 06 05 36.71 +24 08 50.7 127546 695 Ch0145 2003 01 03.19013 05 59 59.98 +24 30 46.3 21.0R 127546 688 Ch0145 2003 01 03.30213 05 59 58.69 +24 30 51.1 127546 688 Ch0145 2003 01 30.17579 05 55 17.82 +24 49 51.2 21.1R 127546 688 Ch1705 2003 01 30.25700 05 55 17.08 +24 49 54.6 127546 688 Ch1705 2003 03 01.78552 05 52 08.78 +25 09 56.9 21.2R 127546 230 Ch4226 2003 03 01.81881 05 52 08.69 +25 09 58.0 20.9R 127546 230 Ch4226 2003 03 06.15277 05 51 56.71 +25 12 44.5 21.1R 127546 662 Ch6164 2003 03 06.20488 05 51 56.60 +25 12 46.6 127546 662 Ch6164 2003 10 01.58522 06 17 32.78 +27 41 22.0 21.5R 127546 568 Ci6926 2003 10 02.52623 06 17 32.52 +27 42 15.1 127546 568 Ci6926 2003 10 02.56138 06 17 32.49 +27 42 16.7 127546 568 Ci6926 2003 11 20.45451 06 13 07.77 +28 29 43.0 20.2R 127546 695 Cj3701 2003 11 20.51402 06 13 07.20 +28 29 46.3 127546 695 Cj3701 2004 12 14.24993 06 13 46.82 +33 34 34.3 21.5R 127546 918 Cq3767 2004 12 14.32021 06 13 46.03 +33 34 38.8 21.1R 127546 918 Cq3767 2005 02 04.20299 06 03 16.01 +34 09 23.6 20.6R 127546 709 Cm6367 2005 02 04.23454 06 03 15.74 +34 09 24.8 20.8R 127546 709 Cm6760 2005 02 04.26611 06 03 15.40 +34 09 25.2 21.1R 127546 709 Cm6367 2005 02 04.29769 06 03 15.07 +34 09 25.1 21.3R 127546 709 Cm6367 2005 02 04.78452 06 03 10.57 +34 09 37.5 127546 621 Cm6760 2005 02 04.81962 06 03 10.29 +34 09 37.7 22. R 127546 621 Cm6760 2005 02 05.80454 06 03 01.32 +34 10 01.6 127546 621 Cm6760 2005 02 08.81069 06 02 35.21 +34 11 12.7 127546 621 Cm6760 2005 02 08.84776 06 02 34.88 +34 11 13.5 21. R 127546 621 Cm6760 2005 02 09.13905 06 02 32.52 +34 11 19.7 20.2R 127546 688 Cm6760 2005 02 09.25223 06 02 31.53 +34 11 22.4 127546 688 Cm6760 2005 02 14.17219 06 01 53.12 +34 13 08.5 21.0R 127546 709 Cm6760 2005 02 14.20377 06 01 52.87 +34 13 09.6 20.7R 127546 709 Cm6760 2006 01 28.17144 06 09 46.73 +38 53 41.2 21.2R 127546 688 Cq1751 2006 01 28.23847 06 09 45.98 +38 53 42.5 127546 688 Cq1751
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 -0.48 0.00 0.93 2 0.0003 0.00 -0.05 0.00 0.02 3 0.0027 0.00 0.13 0.00 -0.01 4 0.0816 0.00 0.15 0.00 0.12 5 0.0819 0.00 0.55 0.00 -0.04 6 0.1555 0.00 0.09 0.00 -0.17 7 0.1557 0.00 -0.04 0.00 -0.08 8 0.2393 0.00 -0.07 0.00 -0.22 9 0.2394 0.00 0.25 0.00 -0.40 10 0.2513 0.00 -0.29 0.00 0.41 11 0.2514 0.00 -0.03 0.00 0.54 12 0.8247 0.00 -0.15 0.00 -0.17 13 0.8273 0.00 0.07 0.00 -0.06 14 0.8274 0.00 -0.09 0.00 -0.47 15 0.9612 0.00 -0.11 0.00 -0.04 16 0.9614 0.00 0.30 0.00 -0.12 17 2.0284 0.00 -0.73 0.00 0.26 18 2.0286 0.00 1.23 0.00 0.78 19 2.1707 0.00 0.96 0.00 0.30 20 2.1707 0.00 1.37 0.00 0.72 21 2.1708 0.00 0.73 0.00 0.36 22 2.1709 0.00 0.22 0.00 -0.50 23 2.1723 0.00 -0.53 0.00 -0.03 24 2.1723 0.00 0.15 0.00 -0.70 25 2.1750 0.00 -0.57 0.00 -0.75 26 2.1833 0.00 -0.55 0.00 0.03 27 2.1834 0.00 -0.76 0.00 -0.02 28 2.1842 0.00 0.28 0.00 -0.52 29 2.1845 0.00 -0.15 0.00 -0.35 30 2.1980 0.00 0.44 0.00 -0.03 31 2.1980 0.00 0.24 0.00 0.43 32 3.1507 0.00 -0.29 0.00 0.08 33 3.1509 0.00 0.10 0.00 -0.14
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.
127546 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 67.101 67.100 67.102 ecceobj 0.687 0.687 0.687 incobj 77.869 77.869 77.869 qmin 15.353 15.389 15.351 qmax 120.144 125.114 118.398 amean 66.957 67.174 66.190 amin 65.906 65.763 64.551 amax 68.844 70.468 67.866 emean 0.700 0.700 0.695 emin 0.671 0.670 0.668 emax 0.767 0.776 0.768 imean 76.084 76.039 76.190 imin 74.267 73.943 74.281 imax 77.102 77.142 77.162 fracstop 0.452 0.484 0.467 cjmean 0.962 0.964 0.965 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 240.6 245.3 236.8 kozaiamp 180.0 180.0 180.0