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: 60458
# Created Fri May 2 02:36:18 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 13 observations of 17
# Arc: 3.07y
# First observation: 2000/02/05
# Last observation: 2003/03/03
# Chi-squared of fit: 18.55 DOF: 20 RMS: 0.21
# Min/Max residuals: -0.36 0.63
# Exact a, adot, b, bdot, g, gdot:
1.538090E-05 2.191799E-02 -4.806660E-06 -7.853667E-03 2.317517E-02 -7.926173E-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
0.002658 132.244090 -0.065924 -0.000163 -0.986587 2451579.672633
# Heliocentric elements and errors
Epoch: 2451580.5000 = 2000/02/06
Mean Anomaly: 327.40219 +/- 0.000
Argument of Peri: 251.22235 +/- 0.000
Long of Asc Node: 312.32773 +/- 0.000
Inclination: 19.70723 +/- 0.000
Eccentricity: 0.40033637 +/- 0.0000
Semi-Major Axis: 59.32759429 +/- 0.0000
Time of Perihelion: 2466694.1513 +/- 0.0
Perihelion: 35.57660032 +/- 0.0000
Aphelion: 83.07858826 +/- 0.0000
Period (y) 456.9759 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.71470449 +/- 0.0000
Ecliptic Y 32.63176914 +/- 0.0000
Ecliptic Z 0.00180084 +/- 0.0000
Ecliptic XDOT -0.00129303 +/- 0.0000
Ecliptic YDOT -0.00242680 +/- 0.0000
Ecliptic ZDOT -0.00092775 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.13407169 +/- 0.0000
Geocenter to KBO 43.14988820 +/- 0.0000
# Hcoef: 6.70
The following table shows the complete astrometric record for 60458. 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 (60458) followed by the observatory code and reference code for the source of the astrometry.
2000 02 05.17189 08 58 49.88 +17 07 41.8 22.8R 60458 695 Cb4132 2000 02 05.28382 08 58 49.33 +17 07 43.3 60458 695 Cb4132 2000 03 30.16035 08 55 20.78 +17 18 01.0 23.5R 60458 695 Cb4132 2000 03 30.24751 08 55 20.58 +17 18 01.3 60458 695 Cb4132 2000 12 27.41163 09 06 16.215 +16 10 47.42 22.2R 60458 568 Cl5056 2000 12 28.40486 09 06 12.572 +16 10 58.13 22.5R 60458 568 Cl5056 2001 03 24.20123 09 00 06.02 +16 30 32.7 22.8R 60458 695 f4565 2001 03 24.30328 09 00 05.72 +16 30 33.5 60458 695 f4565 2002 02 06.19144 09 07 49.76 +15 31 49.1 22.4R 60458 695 Ce8743 2002 02 06.28058 09 07 49.33 +15 31 50.4 60458 695 Ce8743 2002 02 07.26681 09 07 44.53 +15 32 06.7 60458 695 Ce8743 2003 03 03.31846 09 10 31.48 +14 48 45.7 60458 568 Ch5665 2003 03 03.36878 09 10 31.26 +14 48 46.5 60458 568 Ch5665 2006 01 19.27742 09 27 57.267 +12 00 25.42 23.1R 60458 500 2006 01 19.28182 09 27 57.243 +12 00 25.50 60458 500 2006 01 19.28622 09 27 57.224 +12 00 25.58 60458 500 2006 01 19.29062 09 27 57.203 +12 00 25.64 60458 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 -0.19 0.00 0.63 2 0.0003 0.00 -0.08 0.00 -0.36 3 0.1478 0.00 -0.02 0.00 0.16 4 0.1481 0.00 -0.03 0.00 0.07 5 0.8932 0.00 0.24 0.00 0.18 6 0.8959 0.00 0.31 0.00 0.05 7 1.1308 0.00 0.28 0.00 -0.10 8 1.1311 0.00 0.15 0.00 -0.07 9 2.0042 0.00 -0.13 0.00 0.25 10 2.0044 0.00 0.00 0.00 0.06 11 2.0071 0.00 -0.33 0.00 0.03 12 3.0723 0.00 0.11 0.00 -0.16 13 3.0724 0.00 0.09 0.00 -0.12 14 5.9551 0.00 ( 3.84) 0.00 ( -2.18) 15 5.9551 0.00 ( 3.78) 0.00 ( -2.17) 16 5.9551 0.00 ( 3.79) 0.00 ( -2.16) 17 5.9552 0.00 ( 3.78) 0.00 ( -2.16)
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.
60458 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 59.303 59.302 59.303 ecceobj 0.400 0.400 0.400 incobj 19.710 19.710 19.710 qmin 34.900 34.895 34.903 qmax 85.346 85.330 85.350 amean 59.456 59.441 59.545 amin 58.756 58.739 58.889 amax 60.387 60.388 60.474 emean 0.394 0.394 0.395 emin 0.375 0.374 0.376 emax 0.413 0.413 0.413 imean 21.729 21.717 21.713 imin 21.024 21.023 21.027 imax 22.673 22.639 22.671 fracstop 1.000 1.000 1.000 cjmean 2.905 2.905 2.905 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 177.8 178.0 178.0 kozaiamp 180.0 180.0 180.0