The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 08QB43
# Created Thu May 24 01:37:49 2012
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 14
# Arc: 9.72y
# First observation: 1999/10/16
# Last observation: 2009/07/04
Preliminary a, adot, b, bdot, g, gdot:
0.000070 0.023954 0.000004 0.011446 0.027991 0.000000
# Chi-squared of fit: 159.82 DOF: 22 RMS: 0.60
# Min/Max residuals: -1.23 0.87
# Exact a, adot, b, bdot, g, gdot:
1.256687E-05 2.232264E-02 5.527217E-06 1.061156E-02 2.501962E-02 -5.697120E-03
# Covariance matrix:
7.3362E-13 -1.2840E-13 1.7385E-15 -2.2568E-14 -4.5913E-14 -2.1592E-13
-1.2840E-13 7.5752E-13 -3.1908E-14 3.6640E-13 1.1916E-12 3.5187E-12
1.7385E-15 -3.1908E-14 7.3015E-13 -9.6196E-14 -5.6183E-14 -1.5198E-13
-2.2568E-14 3.6640E-13 -9.6196E-14 1.9028E-13 6.0074E-13 1.7305E-12
-4.5913E-14 1.1916E-12 -5.6183E-14 6.0074E-13 2.4224E-12 5.7828E-12
-2.1592E-13 3.5187E-12 -1.5198E-13 1.7305E-12 5.7828E-12 1.6623E-11
# lat0 lon0 xBary yBary zBary JD0
8.412971 -23.433713 -0.711390 0.100345 -0.680000 2451467.808733
# Heliocentric elements and errors
Epoch: 2451460.5000 = 1999/10/09
Mean Anomaly: 298.91934 +/- 0.033
Argument of Peri: 104.72671 +/- 0.030
Long of Asc Node: 320.53558 +/- 0.000
Inclination: 26.36401 +/- 0.000
Eccentricity: 0.22118444 +/- 0.0002
Semi-Major Axis: 43.44025084 +/- 0.0118
Time of Perihelion: 2469203.9532 +/- 6.3
Perihelion: 33.83194332 +/- 0.0128
Aphelion: 53.04855836 +/- 0.0170
Period (y) 286.3167 +/- 0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.19870497 +/- 0.0023
Ecliptic Y -15.34196404 +/- 0.0010
Ecliptic Z 5.84791870 +/- 0.0004
Ecliptic XDOT 0.00024513 +/- 0.0000
Ecliptic YDOT 0.00256215 +/- 0.0000
Ecliptic ZDOT 0.00105757 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.66100915 +/- 0.0021
Geocenter to KBO 39.96863040 +/- 0.0025
# Hcoef: 5.84
The following table shows the complete astrometric record for 08QB43. 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 (08QB43) followed by the observatory code and reference code for the source of the astrometry.
1999 10 16.307990 22 20 51.113 -01 16 30.77 21.5V 08QB43 645 C~0Abb 1999 10 16.311462 22 20 51.087 -01 16 31.71 22.8 08QB43 645 C~0Abb 2008 08 25.26396 23 01 42.283 +08 52 17.33 21.7R 08QB43 675 C~0Abb 2008 08 25.31084 23 01 42.070 +08 52 16.82 21.6R 08QB43 675 C~0Abb 2008 08 26.23269 23 01 37.524 +08 51 59.63 21.1R 08QB43 675 C~0Abb 2008 08 26.27638 23 01 37.222 +08 51 58.42 21.7R 08QB43 675 C~0Abb 2008 09 19.13023 22 59 37.31 +08 42 29.2 08QB43 675 C~0Abb 2008 09 19.23726 22 59 36.80 +08 42 26.6 08QB43 675 C~0Abb 2008 09 19.29176 22 59 36.49 +08 42 24.9 08QB43 675 C~0Abb 2008 10 17.14491 22 57 34.61 +08 28 16.9 08QB43 675 C~0Abb 2008 10 17.19910 22 57 34.38 +08 28 15.4 08QB43 675 C~0Abb 2008 10 17.25372 22 57 34.19 +08 28 13.5 08QB43 675 C~0Abb 2009 07 03.44431 23 09 21.66 +10 00 33.7 08QB43 675 C~0Abb 2009 07 04.44110 23 09 19.95 +10 00 51.9 08QB43 675 C~0Abb
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 0.32 0.00 0.24 2 0.0000 -0.71 -0.22 -0.73 -0.48 3 8.8596 48395.16 -0.09 21235.57 0.39 4 8.8597 48391.84 0.36 21236.19 0.59 5 8.8622 48318.68 0.38 21243.41 0.16 6 8.8623 48313.80 -0.98 21243.82 0.19 7 8.9276 46343.13 -0.99 21322.66 -0.14 8 8.9279 46334.69 -0.48 21322.82 0.13 9 8.9281 46329.52 -1.09 21322.81 0.17 10 9.0043 44230.41 0.87 21144.21 0.26 11 9.0045 44226.49 0.51 21143.97 0.59 12 9.0046 44223.00 0.61 21143.14 0.32 13 9.7143 56770.95 0.22 22848.19 -1.23 14 9.7170 56752.65 0.59 22875.09 -1.21
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.
08QB43 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.414 43.450 43.379 ecceobj 0.221 0.222 0.221 incobj 26.374 26.374 26.375 qmin 33.690 33.368 32.496 qmax 52.628 53.011 53.806 amean 43.122 43.162 43.126 amin 43.003 42.985 42.983 amax 43.254 43.286 43.276 emean 0.198 0.206 0.226 emin 0.180 0.185 0.214 emax 0.219 0.226 0.247 imean 27.998 27.916 27.393 imin 27.420 27.243 26.801 imax 28.418 28.510 27.791 excite_mean 0.509 0.512 0.513 fracstop 1.000 1.000 1.000 cjmean 2.769 2.767 2.768 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 184.9 178.7 183.4 kozaiamp 179.9 179.9 180.0