Orbit Fit and Astrometric record for 87269

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: 87269     
# Created Sat Nov 22 02:37:08 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   33 observations of   34
# Arc:   5.99y
# First observation: 2000/07/29
#  Last observation: 2006/07/25
# Chi-squared of fit:   127.32 DOF:   60 RMS:  0.35
# Min/Max residuals:    -0.74    0.67
# Exact a, adot, b, bdot, g, gdot:
  2.670490E-05  8.391665E-02 -1.061612E-05 -3.017950E-02  4.807251E-02 -1.714485E-02
# 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
   -2.848396  -29.054876    0.427342   -0.045933   -0.919812  2451754.785333
# Heliocentric elements and errors
Epoch:              2451754.5000  =  2000/07/29
Mean Anomaly:          359.89702 +/-     0.000
Argument of Peri:      212.49753 +/-     0.000
Long of Asc Node:      142.34106 +/-     0.000
Inclination:            20.06417 +/-     0.000
Eccentricity:         0.96804384 +/-    0.0000
Semi-Major Axis:    649.78506721 +/-    0.0000
Time of Perihelion: 2453485.1427 +/-       0.0
Perihelion:          20.76463643 +/-    0.0000
Aphelion:          1278.80549799 +/-    0.0000
Period (y)            16563.9073 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           18.76522932 +/-    0.0000
Ecliptic Y          -10.90606583 +/-    0.0000
Ecliptic Z           -1.03395065 +/-    0.0000
Ecliptic XDOT         0.00138675 +/-    0.0000
Ecliptic YDOT         0.00469851 +/-    0.0000
Ecliptic ZDOT        -0.00166800 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   21.72903054 +/-    0.0000
Geocenter to KBO     20.80206220 +/-    0.0000
# Hcoef:  9.11

The following table shows the complete astrometric record for 87269. 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 (87269) followed by the observatory code and reference code for the source of the astrometry.

2000 07  29.28459  22 16 07.28   -13 48 00.0   22.1R 87269     807  Cc0956      
2000 07  29.39321  22 16 06.56   -13 48 06.1         87269     807  Cc0956      
2000 08  01.31959  22 15 47.83   -13 50 54.6   22.3R 87269     807  Cc0956      
2000 08  01.39458  22 15 47.29   -13 50 58.9         87269     807  Cc0956      
2000 08  26.17752  22 12 50.17   -14 15 31.8   22.0R 87269     807  Cc0956      
2000 08  26.23134  22 12 49.76   -14 15 34.8         87269     807  Cc0956      
2000 08  27.12379  22 12 43.14   -14 16 27.4   22.1R 87269     807  Cc0956      
2000 08  27.19393  22 12 42.60   -14 16 31.6         87269     807  Cc0956      
2000 09  19.17813  22 10 01.49   -14 37 18.1   22.1R 87269     695  Cc2364      
2000 09  19.27423  22 10 00.91   -14 37 23.0         87269     695  Cc2364      
2000 11  27.08742  22 08 17.34   -14 57 55.2   22.5R 87269     695  Cc2364      
2000 11  28.07493  22 08 21.72   -14 57 38.6   22.6R 87269     695  Cc2364      
2000 11  28.13522  22 08 22.00   -14 57 37.5   22.5R 87269     695  Cc2364      
2000 11  29.12890  22 08 26.63   -14 57 20.3   22.6R 87269     695  Cc2364      
2001 08  13.44975  22 35 54.17   -13 53 22.2         87269     568  Cd2824      
2001 08  13.49015  22 35 53.89   -13 53 24.9         87269     568  Cd2824      
2001 08  14.46817  22 35 47.06   -13 54 26.5         87269     568  Cd2824      
2001 08  14.47136  22 35 47.05   -13 54 26.7         87269     568  Cd2824      
2001 08  14.47364  22 35 47.03   -13 54 26.7         87269     568  Cd2824      
2001 08  14.47723  22 35 46.99   -13 54 27.1         87269     568  Cd2824      
2001 08  14.48135  22 35 46.95   -13 54 27.1         87269     568  Cd2824      
2001 10  11.05014  22 29 21.76   -14 45 44.1   22.2  87269     304  Ce8850      
2001 10  11.07903  22 29 21.61   -14 45 45.2         87269     304  Ce8850      
2002 11  30.22701  22 50 03.77   -14 38 42.1   22.5R 87269     568  Cg7741      
2002 11  30.26844  22 50 03.89   -14 38 41.1         87269     568  Cg7741      
2002 12  01.21935  22 50 06.86   -14 38 20.3         87269     568  Cg7741      
2004 05  27.34872  23 42 20.91   -11 46 58.7   22.5R 87269     304  Ck8646      
2004 05  27.38536  23 42 21.17   -11 46 58.4         87269     304  Ck8646      
2004 08  23.16130  23 42 00.61   -12 51 24.2   21.9R 87269     304   l5129      
2004 08  23.29451  23 41 59.74   -12 51 33.5         87269     304   l5129      
2006 07  25.17864  00 28 36.62   -10 53 28.4   21.8R 87269     250  S~06GV      
2006 07  25.18304  00 28 36.61   -10 53 28.7         87269     250  S~06GV      
2006 07  25.19657  00 28 36.60   -10 53 29.5         87269     250  S~06GV      
2006 07  25.20097  00 28 36.60   -10 53 29.7         87269     250  S~06GV      

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 (  -2.38)
  2   0.0003      0.00    -0.12       0.00     0.31
  3   0.0083      0.00     0.60       0.00     0.23
  4   0.0085      0.00     0.00       0.00     0.26
  5   0.0764      0.00     0.11       0.00    -0.16
  6   0.0765      0.00     0.09       0.00     0.01
  7   0.0790      0.00    -0.05       0.00    -0.19
  8   0.0791      0.00    -0.18       0.00    -0.27
  9   0.1421      0.00    -0.09       0.00     0.48
 10   0.1423      0.00     0.52       0.00     0.22
 11   0.3307      0.00     0.52       0.00    -0.12
 12   0.3334      0.00     0.03       0.00    -0.02
 13   0.3336      0.00     0.23       0.00     0.03
 14   0.3363      0.00     0.28       0.00    -0.39
 15   1.0408      0.00    -0.23       0.00     0.32
 16   1.0409      0.00    -0.11       0.00     0.17
 17   1.0436      0.00    -0.11       0.00     0.36
 18   1.0436      0.00     0.09       0.00     0.36
 19   1.0436      0.00     0.03       0.00     0.51
 20   1.0436      0.00    -0.18       0.00     0.33
 21   1.0437      0.00    -0.34       0.00     0.59
 22   1.2013      0.00    -0.27       0.00    -0.28
 23   1.2014      0.00    -0.49       0.00    -0.41
 24   2.3380      0.00    -0.19       0.00    -0.56
 25   2.3381      0.00    -0.16       0.00    -0.45
 26   2.3407      0.00     0.26       0.00    -0.30
 27   3.8277      0.00     0.11       0.00    -0.64
 28   3.8278      0.00     0.24       0.00    -0.34
 29   4.0681      0.00     0.60       0.00    -0.74
 30   4.0685      0.00     0.67       0.00    -0.62
 31   5.9874      0.00    -0.07       0.00     0.53
 32   5.9874      0.00    -0.16       0.00     0.48
 33   5.9874      0.00    -0.13       0.00     0.45
 34   5.9875      0.00    -0.07       0.00     0.50

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.

87269    quality flag:3

Type:       CENTAURS  CENTAURS  CENTAURS

axisobj       683.343   683.247   683.438
ecceobj         0.970     0.970     0.970
incobj         20.055    20.055    20.055
qmin           17.531    17.319    17.076
qmax         1345.913  1416.750  1379.222
amean         444.039   543.991   514.670
amin          347.963   483.058   397.493
amax          683.340   718.816   700.088
emean           0.952     0.961     0.959
emin            0.938     0.951     0.944
emax            0.970     0.971     0.972
imean          19.695    19.325    19.200
imin           17.535    17.529    17.394
imax           21.684    21.141    20.846
excite_mean     1.010     1.017     1.014
fracstop        1.000     1.000     1.000
cjmean          2.264     2.258     2.262

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       224.6     221.6     222.8
kozaiamp         14.6      11.7      13.0