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: 03QK91
# Created Fri May 2 02:36:52 2008
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 4.05y
# First observation: 2003/08/25
# Last observation: 2007/09/11
Preliminary a, adot, b, bdot, g, gdot:
-0.000153 0.029685 -0.000015 0.001696 0.024840 0.000000
# Chi-squared of fit: 90.38 DOF: 26 RMS: 0.42
# Min/Max residuals: -1.19 0.61
# Exact a, adot, b, bdot, g, gdot:
2.083562E-05 2.907717E-02 1.820324E-06 1.666728E-03 2.531179E-02 -5.410247E-03
# Covariance matrix:
2.9457E-13 -5.0200E-13 8.0027E-15 -2.1728E-14 6.1700E-14 -3.6309E-12
-5.0200E-13 2.0830E-12 -3.7999E-14 1.0184E-13 -3.5529E-13 1.7028E-11
8.0027E-15 -3.7999E-14 2.0292E-13 -7.1540E-14 7.6258E-15 -3.1568E-13
-2.1728E-14 1.0184E-13 -7.1540E-14 4.8682E-14 -1.5082E-14 8.5441E-13
6.1700E-14 -3.5529E-13 7.6258E-15 -1.5082E-14 3.2222E-13 -2.5593E-12
-3.6309E-12 1.7028E-11 -3.1568E-13 8.5441E-13 -2.5593E-12 1.4280E-10
# lat0 lon0 xBary yBary zBary JD0
2.411353 -48.510067 -0.345365 0.040211 -0.953778 2452876.630013
# Heliocentric elements and errors
Epoch: 2452870.5000 = 2003/08/19
Mean Anomaly: 347.19456 +/- 0.024
Argument of Peri: 70.01056 +/- 0.072
Long of Asc Node: 276.13898 +/- 0.004
Inclination: 4.01709 +/- 0.000
Eccentricity: 0.42803302 +/- 0.0002
Semi-Major Axis: 67.08908595 +/- 0.0127
Time of Perihelion: 2460010.0097 +/- 13.1
Perihelion: 38.37274174 +/- 0.0149
Aphelion: 95.80543015 +/- 0.0223
Period (y) 549.5232 +/- 0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 27.03887219 +/- 0.0006
Ecliptic Y -30.04971782 +/- 0.0007
Ecliptic Z 1.66228059 +/- 0.0000
Ecliptic XDOT 0.00195831 +/- 0.0000
Ecliptic YDOT 0.00252154 +/- 0.0000
Ecliptic ZDOT 0.00015567 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.45799460 +/- 0.0006
Geocenter to KBO 39.50728709 +/- 0.0009
# Hcoef: 6.63
The following table shows the complete astrometric record for 03QK91. 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 (03QK91) followed by the observatory code and reference code for the source of the astrometry.
2003 08 25.12927 20 53 02.29 -15 00 59.6 21.8R 03QK91 807 Ci4137 2003 08 26.02489 20 52 58.36 -15 01 15.9 03QK91 807 Ci4137 2003 08 26.12384 20 52 57.92 -15 01 17.7 03QK91 807 Ci4137 2003 10 01.22477 20 50 56.45 -15 10 26.5 23.1R 03QK91 568 Ci6964 2003 10 01.30181 20 50 56.29 -15 10 27.5 03QK91 568 Ci6964 2003 10 02.22040 20 50 54.47 -15 10 37.4 03QK91 568 Ci6964 2004 08 12.11446 21 00 31.29 -14 23 42.2 21.8R 03QK91 807 Cn7007 2004 08 12.21694 21 00 30.79 -14 23 44.3 03QK91 807 Cn7007 2005 06 09.24825 21 11 17.32 -13 33 29.0 22.5R 03QK91 304 Cn7007 2005 06 09.28043 21 11 17.27 -13 33 29.3 03QK91 304 Cn7007 2006 06 17.26905 21 17 31.784 -12 58 46.56 22.5R 03QK91 500 2006 06 17.33169 21 17 31.623 -12 58 47.00 03QK91 500 2006 06 17.33608 21 17 31.612 -12 58 47.05 03QK91 500 2006 06 17.34048 21 17 31.601 -12 58 47.06 03QK91 500 2007 09 11.23039 21 18 10.00 -12 47 47.6 22.5r 03QK91 695 Cv8575 2007 09 11.29715 21 18 09.73 -12 47 48.9 22.6r 03QK91 695 Cv8575
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 -0.55 0.00 -0.16 2 0.0025 -59.22 -0.32 -0.15 0.07 3 0.0027 -65.85 -0.28 -0.14 0.10 4 0.1016 -1907.99 0.24 -50.42 0.18 5 0.1018 -1910.49 0.25 -50.76 -0.01 6 0.1043 -1938.54 0.33 -53.16 -0.36 7 0.9664 6881.68 0.61 346.55 0.07 8 0.9667 6874.11 0.54 346.57 0.03 9 1.7909 16788.56 -1.19 542.21 0.13 10 1.7910 16787.77 -0.97 542.13 -0.08 11 2.8122 22680.36 0.57 923.82 0.03 12 2.8123 22677.95 0.55 924.11 0.07 13 2.8123 22677.78 0.55 924.11 0.05 14 2.8124 22677.62 0.56 924.14 0.07 15 4.0468 23419.35 -0.43 1389.54 -0.11 16 4.0470 23415.14 -0.45 1389.47 -0.08
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.
03QK91 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 68.129 68.129 68.130 ecceobj 0.436 0.436 0.436 incobj 4.015 4.015 4.015 qmin 37.737 37.739 37.765 qmax 99.586 99.580 99.569 amean 67.849 67.848 67.848 amin 66.953 66.954 66.967 amax 69.006 69.003 69.046 emean 0.432 0.432 0.432 emin 0.422 0.422 0.422 emax 0.443 0.443 0.443 imean 5.752 5.752 5.752 imin 5.455 5.455 5.455 imax 6.104 6.104 6.100 fracstop 1.000 1.000 1.000 cjmean 3.138 3.138 3.138 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 187.1 187.1 187.3 kozaiamp 180.0 179.9 179.9