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: 87269 # Created Fri May 2 02:36:19 2008 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 34 # Arc: 4.07y # First observation: 2000/07/29 # Last observation: 2004/08/23 # Chi-squared of fit: 66.51 DOF: 52 RMS: 0.27 # Min/Max residuals: -0.51 0.65 # Exact a, adot, b, bdot, g, gdot: 2.710348E-05 8.391459E-02 -1.008830E-05 -3.017978E-02 4.807178E-02 -1.715033E-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 -2.848396 -29.054876 0.427342 -0.045933 -0.919812 2451754.785333 # Heliocentric elements and errors Epoch: 2451755.5000 = 2000/07/30 Mean Anomaly: 359.89731 +/- 0.000 Argument of Peri: 212.50379 +/- 0.000 Long of Asc Node: 142.34143 +/- 0.000 Inclination: 20.06479 +/- 0.000 Eccentricity: 0.96809803 +/- 0.0000 Semi-Major Axis: 650.88162400 +/- 0.0000 Time of Perihelion: 2453485.5843 +/- 0.0 Perihelion: 20.76440314 +/- 0.0000 Aphelion: 1280.99884487 +/- 0.0000 Period (y) 16605.8541 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 18.76551145 +/- 0.0000 Ecliptic Y -10.90621308 +/- 0.0000 Ecliptic Z -1.03395549 +/- 0.0000 Ecliptic XDOT 0.00138644 +/- 0.0000 Ecliptic YDOT 0.00469863 +/- 0.0000 Ecliptic ZDOT -0.00166803 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 21.72934837 +/- 0.0000 Geocenter to KBO 20.80238022 +/- 0.0000 # Hcoef: 9.11
The following table shows the complete astrometric record for 87269. 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 (87269) followed by the observatory code and reference code for the source of the astrometry.
2000 07 29.28459 22 16 07.28 -13 48 00.0 22.1R 87269 807 Cc0956 2000 07 29.39321 22 16 06.56 -13 48 06.1 87269 807 Cc0956 2000 08 01.31959 22 15 47.83 -13 50 54.6 22.3R 87269 807 Cc0956 2000 08 01.39458 22 15 47.29 -13 50 58.9 87269 807 Cc0956 2000 08 26.17752 22 12 50.17 -14 15 31.8 22.0R 87269 807 Cc0956 2000 08 26.23134 22 12 49.76 -14 15 34.8 87269 807 Cc0956 2000 08 27.12379 22 12 43.14 -14 16 27.4 22.1R 87269 807 Cc0956 2000 08 27.19393 22 12 42.60 -14 16 31.6 87269 807 Cc0956 2000 09 19.17813 22 10 01.49 -14 37 18.1 22.1R 87269 695 Cc2364 2000 09 19.27423 22 10 00.91 -14 37 23.0 87269 695 Cc2364 2000 11 27.08742 22 08 17.34 -14 57 55.2 22.5R 87269 695 Cc2364 2000 11 28.07493 22 08 21.72 -14 57 38.6 22.6R 87269 695 Cc2364 2000 11 28.13522 22 08 22.00 -14 57 37.5 22.5R 87269 695 Cc2364 2000 11 29.12890 22 08 26.63 -14 57 20.3 22.6R 87269 695 Cc2364 2001 08 13.44975 22 35 54.17 -13 53 22.2 87269 568 Cd2824 2001 08 13.49015 22 35 53.89 -13 53 24.9 87269 568 Cd2824 2001 08 14.46817 22 35 47.06 -13 54 26.5 87269 568 Cd2824 2001 08 14.47136 22 35 47.05 -13 54 26.7 87269 568 Cd2824 2001 08 14.47364 22 35 47.03 -13 54 26.7 87269 568 Cd2824 2001 08 14.47723 22 35 46.99 -13 54 27.1 87269 568 Cd2824 2001 08 14.48135 22 35 46.95 -13 54 27.1 87269 568 Cd2824 2001 10 11.05014 22 29 21.76 -14 45 44.1 22.2 87269 304 Ce8850 2001 10 11.07903 22 29 21.61 -14 45 45.2 87269 304 Ce8850 2002 11 30.22701 22 50 03.77 -14 38 42.1 22.5R 87269 568 Cg7741 2002 11 30.26844 22 50 03.89 -14 38 41.1 87269 568 Cg7741 2002 12 01.21935 22 50 06.86 -14 38 20.3 87269 568 Cg7741 2004 05 27.34872 23 42 20.91 -11 46 58.7 22.5R 87269 304 Ck8646 2004 05 27.38536 23 42 21.17 -11 46 58.4 87269 304 Ck8646 2004 08 23.16130 23 42 00.61 -12 51 24.2 21.9R 87269 304 l5129 2004 08 23.29451 23 41 59.74 -12 51 33.5 87269 304 l5129 2006 07 25.17864 00 28 36.619 -10 53 28.36 21.8R 87269 500 2006 07 25.18304 00 28 36.614 -10 53 28.67 87269 500 2006 07 25.19657 00 28 36.603 -10 53 29.45 87269 500 2006 07 25.20097 00 28 36.598 -10 53 29.71 87269 500
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 ( -0.04) 0.00 ( -2.38) 2 0.0003 0.00 -0.16 0.00 0.18 3 0.0083 0.00 0.56 0.00 0.10 4 0.0085 0.00 -0.05 0.00 0.13 5 0.0764 0.00 0.03 0.00 -0.30 6 0.0765 0.00 0.01 0.00 -0.14 7 0.0790 0.00 -0.13 0.00 -0.33 8 0.0791 0.00 -0.26 0.00 -0.41 9 0.1421 0.00 -0.20 0.00 0.33 10 0.1423 0.00 0.41 0.00 0.07 11 0.3307 0.00 0.41 0.00 -0.24 12 0.3334 0.00 -0.08 0.00 -0.14 13 0.3336 0.00 0.12 0.00 -0.09 14 0.3363 0.00 0.17 0.00 -0.51 15 1.0408 0.00 -0.05 0.00 0.38 16 1.0409 0.00 0.08 0.00 0.23 17 1.0436 0.00 0.08 0.00 0.42 18 1.0436 0.00 0.27 0.00 0.42 19 1.0436 0.00 0.22 0.00 0.57 20 1.0436 0.00 0.00 0.00 0.39 21 1.0437 0.00 -0.15 0.00 0.65 22 1.2013 0.00 -0.14 0.00 -0.21 23 1.2014 0.00 -0.36 0.00 -0.34 24 2.3380 0.00 -0.06 0.00 -0.26 25 2.3381 0.00 -0.02 0.00 -0.15 26 2.3407 0.00 0.39 0.00 0.00 27 3.8277 0.00 -0.25 0.00 -0.13 28 3.8278 0.00 -0.12 0.00 0.18 29 4.0681 0.00 0.13 0.00 -0.14 30 4.0685 0.00 0.20 0.00 -0.01 31 5.9874 0.00 ( -2.05) 0.00 ( 1.26) 32 5.9874 0.00 ( -2.07) 0.00 ( 1.20) 33 5.9874 0.00 ( -2.06) 0.00 ( 1.19) 34 5.9875 0.00 ( -2.07) 0.00 ( 1.18)
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.
87269 quality flag:3 Type: CENTAURS CENTAURS CENTAURS axisobj 684.574 684.478 684.670 ecceobj 0.970 0.970 0.970 incobj 20.056 20.056 20.056 qmin 17.309 17.435 16.387 qmax 1357.685 1348.186 1720.724 amean 488.477 424.233 623.490 amin 376.782 330.242 482.483 amax 689.285 684.477 870.807 emean 0.957 0.950 0.966 emin 0.941 0.933 0.952 emax 0.971 0.970 0.978 imean 19.388 19.446 19.169 imin 17.594 17.568 17.475 imax 21.110 21.336 21.102 fracstop 1.000 1.000 1.000 cjmean 2.261 2.269 2.257 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 223.3 225.5 219.4 kozaiamp 13.8 15.6 9.8