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: 160091
# Created Fri May 2 02:36:24 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 15 observations of 15
# Arc: 6.95y
# First observation: 2000/07/29
# Last observation: 2007/07/12
# Chi-squared of fit: 15.83 DOF: 24 RMS: 0.18
# Min/Max residuals: -0.47 0.46
# Exact a, adot, b, bdot, g, gdot:
1.524848E-05 2.397455E-02 4.666342E-09 8.065370E-04 2.417554E-02 2.450348E-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
0.457402 -23.585302 0.512754 0.006830 -0.876243 2451754.813763
# Heliocentric elements and errors
Epoch: 2451755.5000 = 2000/07/30
Mean Anomaly: 47.75124 +/- 0.000
Argument of Peri: 315.22749 +/- 0.000
Long of Asc Node: 322.69576 +/- 0.000
Inclination: 1.98509 +/- 0.000
Eccentricity: 0.10844025 +/- 0.0000
Semi-Major Axis: 45.21920560 +/- 0.0000
Time of Perihelion: 2437023.3892 +/- 0.0
Perihelion: 40.31562365 +/- 0.0000
Aphelion: 50.12278754 +/- 0.0000
Period (y) 304.0833 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 38.51156970 +/- 0.0000
Ecliptic Y -17.36561691 +/- 0.0000
Ecliptic Z 0.33019892 +/- 0.0000
Ecliptic XDOT 0.00133287 +/- 0.0000
Ecliptic YDOT 0.00238314 +/- 0.0000
Ecliptic ZDOT 0.00009370 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.24701091 +/- 0.0000
Geocenter to KBO 41.36409956 +/- 0.0000
# Hcoef: 6.58
The following table shows the complete astrometric record for 160091. 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 (160091) followed by the observatory code and reference code for the source of the astrometry.
2000 07 29.31302 22 32 00.04 -08 43 58.1 22.6R 160091 807 Cc0956 2000 07 29.42109 22 31 59.62 -08 44 00.6 160091 807 Cc0956 2000 08 25.18432 22 30 06.49 -08 54 46.2 23.0R 160091 807 Cc0956 2000 08 25.24361 22 30 06.21 -08 54 48.1 160091 807 Cc0956 2000 09 19.18728 22 28 16.58 -09 05 19.6 22.8R 160091 695 Cc2364 2000 09 19.28280 22 28 16.18 -09 05 21.6 160091 695 Cc2364 2001 08 21.18017 22 35 31.61 -08 19 52.9 21.8R 160091 807 Cg3073 2001 08 21.25576 22 35 31.26 -08 19 54.7 160091 807 Cg3073 2002 08 11.33940 22 41 18.14 -07 42 34.0 22.2R 160091 807 Cg3073 2002 08 12.30468 22 41 14.14 -07 42 56.8 160091 807 Cg3073 2002 08 12.38292 22 41 13.80 -07 42 58.6 160091 807 Cg3073 2007 07 11.32760 23 07 33.58 -04 47 24.6 160091 304 Cv1967 2007 07 11.42412 23 07 33.38 -04 47 25.8 160091 304 Cv1967 2007 07 12.23520 23 07 31.78 -04 47 34.8 160091 304 Cv1967 2007 07 12.41740 23 07 31.40 -04 47 36.8 160091 304 Cv1967
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 -0.09 0.00 -0.47 2 0.0003 0.00 0.02 0.00 -0.05 3 0.0736 0.00 0.16 0.00 -0.02 4 0.0737 0.00 0.03 0.00 -0.39 5 0.1420 0.00 0.06 0.00 -0.12 6 0.1423 0.00 0.08 0.00 0.16 7 1.0619 0.00 0.13 0.00 -0.10 8 1.0621 0.00 -0.02 0.00 0.04 9 2.0343 0.00 -0.02 0.00 -0.13 10 2.0369 0.00 0.02 0.00 0.37 11 2.0372 0.00 -0.11 0.00 0.46 12 6.9487 0.00 -0.05 0.00 0.03 13 6.9490 0.00 -0.09 0.00 -0.11 14 6.9512 0.00 0.12 0.00 -0.07 15 6.9517 0.00 0.20 0.00 0.01
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.
160091 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.311 45.311 45.311 ecceobj 0.110 0.110 0.110 incobj 1.982 1.982 1.982 qmin 39.617 39.610 39.619 qmax 51.047 50.996 51.024 amean 45.156 45.157 45.154 amin 44.786 44.786 44.786 amax 45.556 45.572 45.555 emean 0.106 0.106 0.106 emin 0.090 0.090 0.091 emax 0.121 0.120 0.120 imean 3.484 3.484 3.484 imin 2.834 2.834 2.834 imax 4.007 4.006 4.003 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 177.0 177.0 177.0 kozaiamp 180.0 180.0 180.0