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: 03QW113
# Created Thu May 24 01:37:17 2012
# Orbit generated from Bernstein formalism
# Fitting 18 observations of 19
# Arc: 4.96y
# First observation: 2003/06/23
# Last observation: 2008/06/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000394 0.029150 0.000073 -0.003427 0.027642 0.000000
# Chi-squared of fit: 31.30 DOF: 30 RMS: 0.23
# Min/Max residuals: -0.44 0.42
# Exact a, adot, b, bdot, g, gdot:
1.651793E-05 2.747080E-02 -2.611261E-06 -3.225557E-03 2.659484E-02 -1.232100E-02
# Covariance matrix:
4.2439E-13 -1.3735E-13 -6.1565E-15 6.0142E-15 3.6624E-13 -3.5346E-13
-1.3735E-13 1.9519E-13 1.0941E-14 -2.0098E-14 4.5252E-14 1.2885E-12
-6.1565E-15 1.0941E-14 1.8075E-13 -5.6686E-14 1.5822E-15 8.4122E-14
6.0142E-15 -2.0098E-14 -5.6686E-14 3.2149E-14 -1.3005E-14 -1.6192E-13
3.6624E-13 4.5252E-14 1.5822E-15 -1.3005E-14 7.5363E-13 8.9498E-13
-3.5346E-13 1.2885E-12 8.4122E-14 -1.6192E-13 8.9498E-13 1.0425E-11
# lat0 lon0 xBary yBary zBary JD0
1.605017 -31.556996 0.853016 0.015679 -0.559856 2452814.014743
# Heliocentric elements and errors
Epoch: 2452810.5000 = 2003/06/20
Mean Anomaly: 324.67749 +/- 0.014
Argument of Peri: 254.50363 +/- 0.012
Long of Asc Node: 160.28129 +/- 0.001
Inclination: 6.93581 +/- 0.000
Eccentricity: 0.48368745 +/- 0.0001
Semi-Major Axis: 50.78455091 +/- 0.0129
Time of Perihelion: 2465780.6470 +/- 1.3
Perihelion: 26.22070115 +/- 0.0096
Aphelion: 75.34840066 +/- 0.0204
Period (y) 361.9142 +/- 0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 32.05691213 +/- 0.0010
Ecliptic Y -20.68626791 +/- 0.0007
Ecliptic Z 1.05311988 +/- 0.0000
Ecliptic XDOT 0.00040179 +/- 0.0000
Ecliptic YDOT 0.00306321 +/- 0.0000
Ecliptic ZDOT -0.00036727 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.16642971 +/- 0.0009
Geocenter to KBO 37.60127852 +/- 0.0012
# Hcoef: 7.65
The following table shows the complete astrometric record for 03QW113. 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 (03QW113) followed by the observatory code and reference code for the source of the astrometry.
2003 06 23.51400 22 00 08.05 -10 30 33.6 23.8i 03QW113 568 Cq9889 2003 06 23.56540 22 00 07.95 -10 30 34.3 23.4i 03QW113 568 Cq9889 2003 06 23.61406 22 00 07.85 -10 30 34.8 23.5i 03QW113 568 Cq9889 2003 08 31.32283 21 55 20.38 -10 57 23.6 23.6g 03QW113 568 Cq9889 2003 08 31.35679 21 55 20.21 -10 57 24.7 23.4g 03QW113 568 Cq9889 2003 08 31.38376 21 55 20.06 -10 57 25.4 23.0g 03QW113 568 Cq9889 2004 08 12.40035 22 03 13.74 -10 26 17.6 23.1r 03QW113 568 Cq9889 2004 08 12.43057 22 03 13.60 -10 26 18.0 23.2r 03QW113 568 Cq9889 2004 08 12.46510 22 03 13.44 -10 26 19.1 22.9r 03QW113 568 Cq9889 2005 07 08.57313 22 12 15.51 -09 48 13.0 22.5r 03QW113 568 Cq9889 2005 07 08.60678 22 12 15.41 -09 48 13.7 22.7r 03QW113 568 Cq9889 2005 07 09.53811 22 12 12.36 -09 48 31.2 22.5r 03QW113 568 Cq9889 2006 07 30.31276 22 17 33.01 -09 31 37.1 22.2R 03QW113 250 S~06Ad 2006 07 30.36765 22 17 32.76 -09 31 38.6 03QW113 250 S~06Ad 2006 07 30.37204 22 17 32.74 -09 31 38.7 03QW113 250 S~06Ad 2006 07 30.37644 22 17 32.72 -09 31 38.8 03QW113 250 S~06Ad 2008 06 07.36117 22 33 30.23 -08 25 07.4 03QW113 807 Cz1375 2008 06 08.26699 22 33 30.23 -08 25 08.7 03QW113 807 Cz1375 2008 06 08.33606 22 33 30.21 -08 25 08.8 03QW113 807 Cz1375
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 -0.04 0.00 0.14 2 0.0001 -1.63 0.20 -0.15 -0.04 3 0.0003 -3.18 0.42 -0.11 -0.04 4 0.1884 -4535.31 0.08 -58.56 -0.17 5 0.1885 -4538.04 0.02 -58.74 -0.28 6 0.1886 -4540.36 -0.17 -58.64 -0.14 7 1.1386 2658.58 -0.44 -707.22 0.03 8 1.1387 2656.51 -0.10 -706.87 0.41 9 1.1388 2653.91 0.06 -707.09 0.23 10 2.0426 10962.34 -0.40 -1370.92 0.24 11 2.0427 10960.70 -0.26 -1371.05 0.11 12 2.0452 10912.21 -0.33 -1371.48 0.25 13 3.1014 15725.16 0.35 -2111.07 -0.25 14 3.1016 15721.15 0.27 -2111.15 -0.26 15 3.1016 15720.83 0.28 -2111.14 -0.24 16 3.1016 15720.52 0.28 -2111.13 -0.22 17 4.9578 30582.80 ( 1.00) -3550.96 ( 0.29) 18 4.9603 30582.31 0.00 -3552.18 0.08 19 4.9605 30581.99 -0.23 -3552.17 0.15
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.
03QW113 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 51.459 51.497 51.420 ecceobj 0.488 0.488 0.488 incobj 6.908 6.908 6.908 qmin 26.071 26.119 26.042 qmax 79.430 76.987 76.746 amean 50.676 50.359 50.669 amin 49.859 48.784 49.413 amax 52.945 51.663 51.546 emean 0.483 0.479 0.483 emin 0.476 0.464 0.473 emax 0.500 0.490 0.490 imean 5.211 5.739 4.999 imin 4.923 5.389 4.588 imax 6.107 6.124 6.102 excite_mean 0.491 0.489 0.491 fracstop 0.020 0.016 0.015 cjmean 2.859 2.860 2.859 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 281.5 272.6 273.7 kozaiamp 23.8 20.4 20.6