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: 04LA33
# Created Tue Jan 21 02:08:46 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 9 observations of 11
# Arc: 63.88d
# First observation: 2004/06/09
# Last observation: 2004/08/12
# Chi-squared of fit: 1.47 DOF: 12 RMS: 0.07
# Min/Max residuals: -0.13 0.09
# Exact a, adot, b, bdot, g, gdot:
1.507979E-05 2.629705E-02 -1.700241E-06 -3.171305E-03 2.725458E-02 2.249159E-04
# Covariance matrix:
7.0177E-13 4.2963E-10 -9.4812E-14 6.7609E-12 6.2869E-11 -3.8283E-09
4.2963E-10 9.3557E-07 -2.0839E-10 1.4928E-08 1.3405E-07 -8.7780E-06
-9.4812E-14 -2.0839E-10 4.9442E-13 -6.0921E-12 -2.9833E-11 1.9616E-09
6.7609E-12 1.4928E-08 -6.0921E-12 2.6300E-10 2.1365E-09 -1.4065E-07
6.2869E-11 1.3405E-07 -2.9833E-11 2.1365E-09 1.9222E-08 -1.2539E-06
-3.8283E-09 -8.7780E-06 1.9616E-09 -1.4065E-07 -1.2539E-06 8.3329E-05
# lat0 lon0 xBary yBary zBary JD0
1.750675 -88.819986 0.211103 0.030411 -0.993598 2453166.030263
# Heliocentric elements and errors
Epoch: 2453166.5000 = 2004/06/10
Mean Anomaly: 176.52750 +/- 239.974
Argument of Peri: 348.89508 +/- 0.254
Long of Asc Node: 104.71269 +/- 0.497
Inclination: 7.08187 +/- 0.260
Eccentricity: 0.10022068 +/- 0.2885
Semi-Major Axis: 34.25556381 +/- 9999.9999
Time of Perihelion: 2417257.3622 +/- 9999999.9
Perihelion: 30.82244801 +/- 8997.7986
Aphelion: 37.68867961 +/- 9999.9999
Period (y) 200.4956 +/- 87794.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 0.56124975 +/- 0.0038
Ecliptic Y -37.66260866 +/- 0.1868
Ecliptic Z 1.12090166 +/- 0.0057
Ecliptic XDOT 0.00263926 +/- 0.0001
Ecliptic YDOT 0.00001512 +/- 0.0009
Ecliptic ZDOT -0.00031761 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.68346160 +/- 0.1867
Geocenter to KBO 36.69109829 +/- 0.1869
# Hcoef: 8.56
The following table shows the complete astrometric record for 04LA33. 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 (04LA33) followed by the observatory code and reference code for the source of the astrometry.
2004 06 09.52952 18 05 04.63 -21 41 00.3 24.0R 04LA33 568 C~3z1g 2004 06 09.60307 18 05 04.21 -21 41 00.3 23.8R 04LA33 568 C~3z1g 2004 06 10.53725 18 04 58.96 -21 41 02.2 23.8R 04LA33 568 C~3z1g 2004 07 17.38262 18 01 32.29 -21 42 36.7 23.8R 04LA33 568 C~3z1g 2004 07 17.47083 18 01 31.83 -21 42 36.9 24.4R 04LA33 568 C~3z1g 2004 08 12.301658 17 59 41.78 -21 44 08.7 04LA33 568 C~5V9o 2004 08 12.303730 17 59 41.78 -21 44 08.6 04LA33 568 C~5V9o 2004 08 12.305816 17 59 41.77 -21 44 08.6 04LA33 568 C~5V9o 2004 08 12.404799 17 59 41.43 -21 44 08.9 04LA33 568 C~5V9o 2004 08 12.406892 17 59 41.42 -21 44 09.0 04LA33 568 C~5V9o 2004 08 12.408983 17 59 41.42 -21 44 08.9 04LA33 568 C~5V9o
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 -0.03
2 0.0002 0.00 0.01 0.00 0.08
3 0.0028 0.00 -0.13 0.00 -0.06
4 0.1036 0.00 ( -4.85) 0.00 ( -0.36)
5 0.1039 0.00 ( -4.86) 0.00 ( -0.29)
6 0.1746 0.00 -0.02 0.00 -0.12
7 0.1746 0.00 0.09 0.00 -0.01
8 0.1746 0.00 0.04 0.00 0.00
9 0.1749 0.00 -0.09 0.00 0.07
10 0.1749 0.00 -0.13 0.00 -0.02
11 0.1749 0.00 -0.03 0.00 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.
04LA33 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 34.176 34.176 34.176 ecceobj 0.102 0.102 0.102 incobj 7.080 7.080 7.080 qmin 30.088 29.698 30.127 qmax 37.728 71.654 37.728 amean 32.967 42.208 32.880 amin 31.411 32.922 31.399 amax 34.421 51.766 34.267 emean 0.068 0.252 0.070 emin 0.024 0.059 0.037 emax 0.102 0.387 0.102 imean 4.850 3.713 4.488 imin 4.152 1.421 4.137 imax 5.504 5.902 5.504 excite_mean 0.109 0.263 0.105 fracstop 0.003 0.144 0.005 cjmean 2.993 2.994 2.993 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 82.9 169.9 74.0 kozaiamp 179.1 180.0 164.9