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: 38083
# Created Sun Nov 22 02:36:58 2009
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 28 observations of 28
# Arc: 9.14y
# First observation: 1999/04/17
# Last observation: 2008/06/07
# Chi-squared of fit: 112.34 DOF: 50 RMS: 0.35
# Min/Max residuals: -0.91 1.70
# Exact a, adot, b, bdot, g, gdot:
1.504417E-05 2.650689E-02 -4.832896E-06 -5.928170E-03 2.676556E-02 3.901744E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
1.739652 -178.157983 -0.422310 0.027661 -0.918477 2451285.639553
# Heliocentric elements and errors
Epoch: 2451285.5000 = 1999/04/17
Mean Anomaly: 76.31483 +/- 0.000
Argument of Peri: 78.23314 +/- 0.000
Long of Asc Node: 9.97633 +/- 0.000
Inclination: 12.79240 +/- 0.000
Eccentricity: 0.15472725 +/- 0.0000
Semi-Major Axis: 38.78153970 +/- 0.0000
Time of Perihelion: 2432585.4645 +/- 0.0
Perihelion: 32.78097864 +/- 0.0000
Aphelion: 44.78210076 +/- 0.0000
Period (y) 241.5159 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.22160327 +/- 0.0000
Ecliptic Y -1.65191944 +/- 0.0000
Ecliptic Z 1.13405219 +/- 0.0000
Ecliptic XDOT -0.00033241 +/- 0.0000
Ecliptic YDOT -0.00271464 +/- 0.0000
Ecliptic ZDOT -0.00059398 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.27399595 +/- 0.0000
Geocenter to KBO 37.36138957 +/- 0.0000
# Hcoef: 6.76
The following table shows the complete astrometric record for 38083. 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 (38083) followed by the observatory code and reference code for the source of the astrometry.
1999 04 17.13881 12 09 31.63 +00 51 49.1 22.4R 38083 695 Ca4930 1999 04 17.18654 12 09 31.39 +00 51 50.3 38083 695 Ca4930 1999 04 17.26738 12 09 30.98 +00 51 52.0 38083 695 Ca4930 1999 04 18.17345 12 09 26.97 +00 52 13.9 38083 695 Ca4930 1999 05 05.88205 12 08 16.39 +00 58 18.2 38083 950 Ca4930 1999 05 05.94278 12 08 16.18 +00 58 18.4 38083 950 Ca4930 1999 05 06.00443 12 08 15.94 +00 58 20.2 38083 950 Ca4930 1999 05 07.01150 12 08 12.64 +00 58 36.6 38083 950 Ca4930 1999 05 07.04517 12 08 12.43 +00 58 37.4 38083 950 Ca4930 2000 06 23.88846 12 11 59.83 +00 07 23.0 38083 950 Cb6477 2000 06 24.89813 12 12 00.62 +00 07 12.4 38083 950 Cb6477 2000 06 25.89070 12 12 01.47 +00 07 01.2 38083 950 Cb6477 2001 02 16.16225 12 24 05.58 -01 23 31.8 22.5R 38083 950 Cc6426 2001 02 16.20072 12 24 05.44 -01 23 31.0 23.1R 38083 950 Cc6426 2001 03 24.11944 12 21 23.41 -01 07 47.6 20.8 38083 304 Cf1478 2001 03 24.15373 12 21 23.23 -01 07 46.8 38083 304 Cf1478 2001 05 19.28213 12 17 28.44 -00 46 31.6 22.6R 38083 568 Ce6450 2001 05 20.27983 12 17 25.88 -00 46 19.9 38083 568 Ce6450 2001 05 20.36542 12 17 25.66 -00 46 19.0 38083 568 Ce6450 2002 02 06.54211 12 29 31.10 -02 19 57.6 22.9R 38083 568 Cf1478 2002 02 06.60974 12 29 30.89 -02 19 56.7 38083 568 Cf1478 2004 01 25.20698 12 39 37.99 -04 07 03.9 22.7V 38083 J86 Cj8325 2004 01 25.21757 12 39 38.01 -04 07 04.1 23.1V 38083 J86 Cj8325 2004 01 25.22106 12 39 37.96 -04 07 04.0 23.4V 38083 J86 Cj8325 2004 01 28.29015 12 39 32.98 -04 06 41.6 38083 809 Cj8325 2004 01 28.33801 12 39 32.90 -04 06 41.3 38083 809 Cj8325 2008 06 07.00761 12 50 23.77 -06 46 11.1 38083 807 Cz1541 2008 06 07.10413 12 50 23.58 -06 46 10.7 38083 807 Cz1541
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 -0.08 0.00 0.41 2 0.0001 0.00 -0.05 0.00 0.22 3 0.0004 0.00 -0.65 0.00 -0.04 4 0.0028 0.00 -0.09 0.00 -0.01 5 0.0513 0.00 0.02 0.00 0.16 6 0.0515 0.00 0.09 0.00 -0.66 7 0.0517 0.00 -0.25 0.00 0.12 8 0.0544 0.00 1.70 0.00 -0.02 9 0.0545 0.00 0.29 0.00 0.23 10 1.1875 0.00 -0.33 0.00 -0.06 11 1.1903 0.00 -0.14 0.00 0.23 12 1.1930 0.00 -0.27 0.00 0.34 13 1.8372 0.00 -0.04 0.00 -0.02 14 1.8373 0.00 0.02 0.00 -0.04 15 1.9356 0.00 0.12 0.00 0.16 16 1.9357 0.00 0.02 0.00 -0.03 17 2.0894 0.00 0.16 0.00 0.01 18 2.0921 0.00 0.10 0.00 0.15 19 2.0923 0.00 0.15 0.00 0.08 20 2.8101 0.00 -0.15 0.00 -0.74 21 2.8103 0.00 -0.32 0.00 -0.91 22 4.7750 0.00 -0.24 0.00 0.11 23 4.7750 0.00 0.31 0.00 -0.16 24 4.7750 0.00 -0.36 0.00 -0.08 25 4.7834 0.00 0.11 0.00 0.11 26 4.7836 0.00 0.25 0.00 0.03 27 9.1413 0.00 0.20 0.00 0.43 28 9.1416 0.00 0.04 0.00 -0.10
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.
38083 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 38.827 38.828 38.827 ecceobj 0.156 0.156 0.156 incobj 12.787 12.787 12.787 qmin 32.750 32.837 32.834 qmax 45.690 45.662 45.665 amean 39.120 39.107 39.103 amin 39.013 39.012 39.013 amax 39.350 39.351 39.332 emean 0.128 0.109 0.099 emin 0.095 0.068 0.037 emax 0.165 0.163 0.163 imean 17.048 17.095 17.096 imin 13.037 13.037 13.037 imax 19.419 19.394 19.333 excite_mean 0.321 0.315 0.313 fracstop 1.000 1.000 1.000 cjmean 2.925 2.931 2.933 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 180.3 180.5 180.9 kozaiamp 180.0 179.9 180.0