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: 138537 # Created Fri May 2 02:36:23 2008 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 38 observations of 38 # Arc: 6.16y # First observation: 2000/07/29 # Last observation: 2006/09/25 # Chi-squared of fit: 98.32 DOF: 70 RMS: 0.28 # Min/Max residuals: -0.95 0.70 # Exact a, adot, b, bdot, g, gdot: 1.655831E-05 2.597714E-02 -1.968966E-08 1.843669E-03 2.504096E-02 -1.522662E-03 # 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 -2.818503 -29.278483 0.423806 -0.045534 -0.921468 2451754.781433 # Heliocentric elements and errors Epoch: 2451755.5000 = 2000/07/30 Mean Anomaly: 334.45197 +/- 0.000 Argument of Peri: 359.58256 +/- 0.000 Long of Asc Node: 4.43293 +/- 0.000 Inclination: 4.88046 +/- 0.000 Eccentricity: 0.14361223 +/- 0.0000 Semi-Major Axis: 46.69052163 +/- 0.0000 Time of Perihelion: 2460025.3258 +/- 0.0 Perihelion: 39.98519167 +/- 0.0000 Aphelion: 53.39585160 +/- 0.0000 Period (y) 319.0445 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.39452915 +/- 0.0000 Ecliptic Y -20.32269044 +/- 0.0000 Ecliptic Z -1.96368815 +/- 0.0000 Ecliptic XDOT 0.00124551 +/- 0.0000 Ecliptic YDOT 0.00255945 +/- 0.0000 Ecliptic ZDOT 0.00020967 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.86128176 +/- 0.0000 Geocenter to KBO 39.93465159 +/- 0.0000 # Hcoef: 5.71
The following table shows the complete astrometric record for 138537. 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 (138537) followed by the observatory code and reference code for the source of the astrometry.
2000 07 29.28069 22 15 13.09 -13 51 07.1 21.8R 138537 807 Cc0956 2000 07 29.38920 22 15 12.62 -13 51 09.7 138537 807 Cc0956 2000 08 01.31959 22 15 00.20 -13 52 20.7 21.7R 138537 807 Cc0956 2000 08 01.39458 22 14 59.89 -13 52 22.6 138537 807 Cc0956 2000 08 26.17752 22 13 05.88 -14 02 45.3 21.5R 138537 807 Cc0956 2000 08 26.23134 22 13 05.61 -14 02 46.6 138537 807 Cc0956 2000 08 27.12379 22 13 01.39 -14 03 08.7 21.2R 138537 807 Cc0956 2000 08 27.19393 22 13 01.05 -14 03 10.6 138537 807 Cc0956 2000 09 19.18236 22 11 17.12 -14 11 50.2 21.9R 138537 695 Cc2364 2000 09 19.27848 22 11 16.71 -14 11 52.0 138537 695 Cc2364 2000 11 26.07139 22 09 20.00 -14 17 04.0 21.6R 138537 695 Cc2364 2000 11 27.07137 22 09 21.35 -14 16 51.5 22.1R 138537 695 Cc2364 2000 11 27.13704 22 09 21.45 -14 16 50.6 22.1R 138537 695 Cc2364 2001 05 19.55504 22 22 41.14 -12 59 20.6 22.2R 138537 568 Ce6494 2001 05 20.53877 22 22 42.53 -12 59 15.8 138537 568 Ce6494 2001 06 26.51347 22 22 30.32 -13 02 16.8 138537 568 Cd2337 2001 06 26.54873 22 22 30.24 -13 02 17.3 138537 568 Cd2337 2001 06 26.56619 22 22 30.22 -13 02 17.2 138537 568 Cd2337 2001 06 27.52323 22 22 28.27 -13 02 30.9 138537 568 Cd2337 2001 07 20.45494 22 21 22.236 -13 09 31.61 138537 568 Cl5584 2001 07 21.47628 22 21 18.429 -13 09 54.12 138537 568 Cl5584 2001 10 11.01355 22 15 32.71 -13 40 05.0 19.5 138537 304 Ce8850 2001 10 11.06377 22 15 32.56 -13 40 05.4 138537 304 Ce8850 2002 07 11.19122 22 27 25.09 -12 27 41.0 22.0R 138537 304 Cf9760 2002 07 11.36389 22 27 24.57 -12 27 44.4 138537 304 Cf9760 2003 07 06.59345 22 33 07.86 -11 47 13.7 22.2R 138537 568 Ci2628 2003 07 07.55250 22 33 05.49 -11 47 29.5 138537 568 Ci2628 2003 07 08.50539 22 33 03.04 -11 47 45.8 138537 568 Ci2628 2003 07 09.40831 22 33 00.65 -11 48 01.3 138537 568 Ci2628 2003 07 09.54945 22 33 00.30 -11 48 04.2 138537 568 Ci2628 2005 09 30.14307 22 38 17.00 -11 01 29.5 21.9R 138537 688 Co3359 2005 09 30.23305 22 38 16.60 -11 01 31.6 138537 688 Co3359 2006 08 21.18903 22 46 49.63 -10 04 11.1 20.3R 138537 807 Cs2437 2006 08 22.21960 22 46 44.93 -10 04 38.7 138537 807 Cs2437 2006 08 23.14697 22 46 40.68 -10 05 03.7 138537 807 Cs2437 2006 08 23.21392 22 46 40.38 -10 05 05.6 138537 807 Cs2437 2006 09 25.18472 22 44 09.60 -10 19 15.2 21.8R 138537 688 Cs0756 2006 09 25.28728 22 44 09.17 -10 19 17.2 138537 688 Cs0756
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 -0.18 0.00 -0.95 2 0.0003 0.00 -0.20 0.00 0.23 3 0.0083 0.00 -0.23 0.00 0.30 4 0.0085 0.00 0.03 0.00 0.22 5 0.0764 0.00 0.07 0.00 0.07 6 0.0765 0.00 -0.09 0.00 0.10 7 0.0790 0.00 -0.13 0.00 0.10 8 0.0792 0.00 -0.17 0.00 -0.07 9 0.1421 0.00 -0.16 0.00 -0.38 10 0.1424 0.00 -0.20 0.00 -0.28 11 0.3280 0.00 0.45 0.00 0.23 12 0.3307 0.00 -0.04 0.00 -0.33 13 0.3309 0.00 0.12 0.00 -0.32 14 0.8057 0.00 0.11 0.00 0.14 15 0.8084 0.00 0.27 0.00 0.20 16 0.9096 0.00 0.57 0.00 -0.15 17 0.9097 0.00 0.44 0.00 -0.17 18 0.9097 0.00 0.68 0.00 0.18 19 0.9124 0.00 0.07 0.00 -0.21 20 0.9752 0.00 0.70 0.00 0.01 21 0.9779 0.00 -0.17 0.00 0.10 22 1.2012 0.00 -0.12 0.00 0.00 23 1.2013 0.00 -0.06 0.00 0.22 24 1.9491 0.00 0.14 0.00 0.20 25 1.9496 0.00 0.14 0.00 0.06 26 2.9358 0.00 -0.68 0.00 -0.14 27 2.9385 0.00 -0.30 0.00 -0.02 28 2.9411 0.00 -0.35 0.00 -0.15 29 2.9435 0.00 -0.53 0.00 -0.02 30 2.9439 0.00 0.04 0.00 -0.43 31 5.1714 0.00 0.61 0.00 0.49 32 5.1717 0.00 0.07 0.00 0.22 33 6.0614 0.00 0.11 0.00 -0.13 34 6.0642 0.00 0.14 0.00 -0.03 35 6.0667 0.00 0.00 0.00 -0.06 36 6.0669 0.00 0.19 0.00 -0.15 37 6.1572 0.00 -0.11 0.00 -0.04 38 6.1574 0.00 0.09 0.00 0.29
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.
138537 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.791 46.791 46.791 ecceobj 0.145 0.145 0.145 incobj 4.877 4.877 4.877 qmin 39.301 39.297 39.307 qmax 54.182 54.218 54.251 amean 46.563 46.562 46.564 amin 46.160 46.166 46.168 amax 47.029 47.016 47.009 emean 0.140 0.140 0.140 emin 0.126 0.127 0.127 emax 0.153 0.154 0.154 imean 4.998 4.997 5.001 imin 4.466 4.467 4.468 imax 5.505 5.505 5.505 fracstop 1.000 1.000 1.000 cjmean 3.100 3.100 3.100 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 176.5 176.6 176.4 kozaiamp 179.9 180.0 180.0