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: 11SR250
# Created Thu May 24 01:37:55 2012
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 14 observations of 14
# Arc: 38.03d
# First observation: 2011/09/20
# Last observation: 2011/10/28
# Chi-squared of fit: 52.66 DOF: 22 RMS: 0.34
# Min/Max residuals: -1.74 0.20
# Exact a, adot, b, bdot, g, gdot:
4.004882E-05 3.843767E-01 5.398521E-06 5.177717E-02 1.511731E-01 7.485699E-02
# Covariance matrix:
1.4067E-12 1.1068E-08 -2.5746E-13 5.1863E-10 1.8326E-09 -4.7672E-08
1.1068E-08 1.1949E-04 -2.7287E-09 5.5136E-06 1.9563E-05 -5.4225E-04
-2.5746E-13 -2.7287E-09 3.1227E-13 -1.2862E-10 -4.4748E-10 1.2293E-08
5.1863E-10 5.5136E-06 -1.2862E-10 2.5493E-07 9.0393E-07 -2.4869E-05
1.8326E-09 1.9563E-05 -4.4748E-10 9.0393E-07 3.2062E-06 -8.8390E-05
-4.7672E-08 -5.4225E-04 1.2293E-08 -2.4869E-05 -8.8390E-05 2.5111E-03
# lat0 lon0 xBary yBary zBary JD0
5.026930 -16.790488 -0.235246 0.085212 -0.969066 2455824.837246
# Heliocentric elements and errors
Epoch: 2455824.5000 = 2011/09/20
Mean Anomaly: 21.49072 +/- 334.682
Argument of Peri: 341.79055 +/- 2.780
Long of Asc Node: 315.57155 +/- 0.752
Inclination: 8.85763 +/- 0.143
Eccentricity: 0.37594037 +/- 0.1481
Semi-Major Axis: 11.06748993 +/- 22.9121
Time of Perihelion: 2455021.6755 +/- 12748.8
Perihelion: 6.90677367 +/- 14.3922
Aphelion: 15.22820619 +/- 31.5683
Period (y) 36.8198 +/- 114.34
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 7.31155826 +/- 0.0615
Ecliptic Y -1.95825202 +/- 0.0185
Ecliptic Z 0.57968497 +/- 0.0056
Ecliptic XDOT 0.00322186 +/- 0.0007
Ecliptic YDOT 0.00630345 +/- 0.0003
Ecliptic ZDOT 0.00105297 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 7.59136250 +/- 0.0594
Geocenter to KBO 6.61492462 +/- 0.0644
# Hcoef: 12.61
The following table shows the complete astrometric record for 11SR250. 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 (11SR250) followed by the observatory code and reference code for the source of the astrometry.
2011 09 20.33648 22 50 23.944 -01 57 09.14 22.0w 11SR250 F51 C~0a05 2011 09 20.35158 22 50 23.642 -01 57 10.71 21.8w 11SR250 F51 C~0a05 2011 09 20.36677 22 50 23.352 -01 57 12.19 21.7w 11SR250 F51 C~0a05 2011 09 20.38199 22 50 23.048 -01 57 13.71 22.0w 11SR250 F51 C~0a05 2011 09 21.515122 22 50 01.668 -01 59 04.55 20.7R 11SR250 568 C~0a05 2011 09 21.570922 22 50 00.609 -01 59 09.84 20.5R 11SR250 568 C~0a05 2011 10 28.231113 22 42 06.533 -02 45 43.11 21.2R 11SR250 568 C~0a05 2011 10 28.237070 22 42 06.500 -02 45 43.33 21.2R 11SR250 568 C~0a05 2011 10 28.238320 22 42 06.494 -02 45 43.40 21.2R 11SR250 568 C~0a05 2011 10 28.239575 22 42 06.484 -02 45 43.48 21.1R 11SR250 568 C~0a05 2011 10 28.290906 22 42 06.179 -02 45 45.69 21.2R 11SR250 568 C~0a05 2011 10 28.366672 22 42 05.728 -02 45 48.78 21.0R 11SR250 568 C~0a05 2011 10 28.367921 22 42 05.716 -02 45 48.84 21.1R 11SR250 568 C~0a05 2011 10 28.369174 22 42 05.717 -02 45 48.91 21.2R 11SR250 568 C~0a05
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 -0.24 0.00 -1.74 2 0.0000 0.00 0.12 0.00 0.00 3 0.0001 0.00 0.20 0.00 0.01 4 0.0001 0.00 0.08 0.00 -0.02 5 0.0032 0.00 0.15 0.00 -0.01 6 0.0034 0.00 0.15 0.00 0.14 7 0.1037 0.00 -0.02 0.00 -0.01 8 0.1038 0.00 0.02 0.00 0.02 9 0.1038 0.00 0.05 0.00 0.01 10 0.1038 0.00 0.01 0.00 -0.02 11 0.1039 0.00 0.03 0.00 -0.06 12 0.1041 0.00 0.00 0.00 0.02 13 0.1041 0.00 -0.07 0.00 0.01 14 0.1041 0.00 0.05 0.00 -0.01
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.
11SR250 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 10.821 10.821 10.821 ecceobj 0.362 0.362 0.362 incobj 8.843 8.843 8.843 qmin 6.903 6.903 6.903 qmax 15.544 15.033 14.990 amean 11.070 10.597 10.828 amin 10.599 10.106 10.541 amax 12.128 11.041 11.050 emean 0.308 0.306 0.335 emin 0.263 0.249 0.278 emax 0.362 0.362 0.362 imean 12.881 11.767 11.639 imin 10.039 10.044 10.033 imax 16.842 14.037 15.100 excite_mean 0.383 0.369 0.393 fracstop 0.002 0.002 0.001 cjmean 3.849 3.949 3.889 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 50.0 58.0 59.5 kozaiamp 167.7 167.8 167.6