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: 03QT90 # Created Sun Dec 22 02:08:30 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 12 observations of 12 # Arc: 13.20y # First observation: 2003/08/23 # Last observation: 2016/11/05 # Chi-squared of fit: 15.15 DOF: 18 RMS: 0.20 # Min/Max residuals: -0.43 0.54 # Exact a, adot, b, bdot, g, gdot: 1.411610E-05 2.000115E-02 -9.925078E-07 -7.672370E-04 2.217318E-02 -5.283110E-04 # Covariance matrix: 6.0102E-13 9.8346E-14 -4.3437E-16 -4.7270E-15 5.0696E-13 4.5138E-13 9.8346E-14 3.6853E-13 1.3769E-15 -1.4575E-14 3.8508E-13 1.4283E-12 -4.3437E-16 1.3769E-15 3.7184E-13 -2.9283E-14 -3.9432E-16 5.6244E-15 -4.7270E-15 -1.4575E-14 -2.9283E-14 4.0818E-15 -1.4636E-14 -5.7124E-14 5.0696E-13 3.8508E-13 -3.9432E-16 -1.4636E-14 1.1574E-12 1.4103E-12 4.5138E-13 1.4283E-12 5.6244E-15 -5.7124E-14 1.4103E-12 5.6009E-12 # lat0 lon0 xBary yBary zBary JD0 -1.034105 -13.812655 0.291484 -0.017511 -0.972757 2452874.682813 # Heliocentric elements and errors Epoch: 2452874.5000 = 2003/08/23 Mean Anomaly: 214.52665 +/- 0.120 Argument of Peri: 353.99528 +/- 0.110 Long of Asc Node: 141.19450 +/- 0.002 Inclination: 2.42759 +/- 0.000 Eccentricity: 0.06351266 +/- 0.0001 Semi-Major Axis: 43.72898600 +/- 0.0067 Time of Perihelion: 2495555.3915 +/- 38.2 Perihelion: 40.95164195 +/- 0.0077 Aphelion: 46.50633006 +/- 0.0085 Period (y) 289.1760 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.66071645 +/- 0.0021 Ecliptic Y -11.27675104 +/- 0.0005 Ecliptic Z -0.81398987 +/- 0.0000 Ecliptic XDOT 0.00051936 +/- 0.0000 Ecliptic YDOT 0.00240851 +/- 0.0000 Ecliptic ZDOT -0.00009337 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.06961371 +/- 0.0021 Geocenter to KBO 45.09957646 +/- 0.0022 # Hcoef: 6.74
The following table shows the complete astrometric record for 03QT90. 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 (03QT90) followed by the observatory code and reference code for the source of the astrometry.
2003 08 23.18207 23 10 46.15 -06 24 08.8 22.1R 03QT90 807 Ci4137 2003 08 23.25045 23 10 45.85 -06 24 10.1 03QT90 807 Ci4137 2003 08 24.27753 23 10 41.85 -06 24 37.0 03QT90 807 Ci4137 2003 10 23.17487 23 06 56.02 -06 48 18.8 23.0R 03QT90 304 Ci9429 2003 10 23.19823 23 06 55.95 -06 48 19.1 03QT90 304 Ci9429 2014 10 23.19731 23 54 18.53 -02 14 55.5 23.6r 03QT90 W84 C~3cWO 2015 11 07.05344 23 57 52.42 -01 54 03.9 23.9r 03QT90 W84 C~3cWO 2016 09 11.23186 00 05 42.84 -01 05 50.6 23.0i 03QT90 W84 C~3cWO 2016 09 22.10524 00 04 58.41 -01 10 46.5 23.2r 03QT90 W84 C~3cWO 2016 10 05.15688 00 04 04.71 -01 16 37.8 23.4r 03QT90 W84 C~3cWO 2016 11 05.05885 00 02 14.70 -01 28 11.5 23.3r 03QT90 W84 C~3cWO 2016 11 05.06023 00 02 14.70 -01 28 11.7 23.0i 03QT90 W84 C~3cWO
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 -0.01 0.00 0.10
2 0.0002 0.00 -0.43 0.00 0.54
3 0.0030 0.00 0.03 0.00 -0.14
4 0.1670 0.00 0.24 0.00 -0.28
5 0.1671 0.00 0.18 0.00 -0.20
6 11.1677 0.00 0.23 0.00 -0.04
7 12.2077 0.00 -0.17 0.00 -0.10
8 13.0542 0.00 0.08 0.00 0.04
9 13.0840 0.00 0.12 0.00 0.20
10 13.1197 0.00 -0.09 0.00 0.01
11 13.2043 0.00 -0.08 0.00 0.04
12 13.2043 0.00 -0.02 0.00 -0.14
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.
03QT90 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.142 44.142 44.142 ecceobj 0.056 0.056 0.056 incobj 2.420 2.420 2.420 qmin 40.275 40.277 40.276 qmax 47.833 47.835 47.827 amean 43.958 43.958 43.958 amin 43.612 43.607 43.611 amax 44.324 44.320 44.328 emean 0.064 0.064 0.064 emin 0.047 0.047 0.047 emax 0.080 0.080 0.080 imean 1.978 1.978 1.978 imin 1.164 1.163 1.164 imax 2.708 2.708 2.708 excite_mean 0.073 0.073 0.073 fracstop 1.000 1.000 1.000 cjmean 3.095 3.095 3.095 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 187.4 187.4 187.5 kozaiamp 179.9 179.9 179.9