Orbit Fit and Astrometric record for 88268

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: 88268     
# Created Sun Oct 22 01:36:26 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   41 observations of   41
# Arc:   3.01y
# First observation: 2001/05/24
#  Last observation: 2004/05/28
# Chi-squared of fit:    55.01 DOF:   76 RMS:  0.20
# Min/Max residuals:    -0.43    1.00
# Exact a, adot, b, bdot, g, gdot:
  1.486357E-05  2.351367E-02  2.381079E-07 -7.322995E-04  2.425479E-02 -3.241254E-04
# 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
    0.633693 -112.052387    0.087497    0.011103   -1.015273  2452053.678343
# Heliocentric elements and errors
Epoch:              2452054.5000  =  2001/05/25
Mean Anomaly:          271.50401 +/-     0.000
Argument of Peri:      251.14910 +/-     0.000
Long of Asc Node:       86.94149 +/-     0.000
Inclination:             1.88880 +/-     0.000
Eccentricity:         0.01544551 +/-    0.0000
Semi-Major Axis:     42.24507732 +/-    0.0000
Time of Perihelion: 2476708.2908 +/-       0.0
Perihelion:          41.59258068 +/-    0.0000
Aphelion:            42.89757395 +/-    0.0000
Period (y)              274.5822 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.93693509 +/-    0.0000
Ecliptic Y          -39.11342404 +/-    0.0000
Ecliptic Z            0.45599208 +/-    0.0000
Ecliptic XDOT         0.00246500 +/-    0.0000
Ecliptic YDOT        -0.00096119 +/-    0.0000
Ecliptic ZDOT        -0.00008287 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.23807037 +/-    0.0000
Geocenter to KBO     41.22901107 +/-    0.0000
# Hcoef:  6.30

The following table shows the complete astrometric record for 88268. 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 (88268) followed by the observatory code and reference code for the source of the astrometry.

2001 05  24.17760  16 25 08.75   -21 00 30.6   21.9R 88268     807  Cd1817      
2001 05  24.23982  16 25 08.42   -21 00 29.7         88268     807  Cd1817      
2001 06  10.04828  16 23 44.00   -20 57 24.5   22.6R 88268     304  Cd1817      
2001 06  10.12318  16 23 43.63   -20 57 23.8         88268     304  Cd1817      
2001 08  19.05290  16 20 15.12   -20 50 27.4   21.2R 88268     807  Ce6595      
2001 08  20.06310  16 20 15.05   -20 50 28.9         88268     807  Ce6595      
2001 08  21.06696  16 20 15.09   -20 50 29.7         88268     807  Ce6595      
2002 04  11.41877  16 33 51.45   -21 21 55.4   21.7R 88268     695  Cg5781      
2002 04  11.46412  16 33 51.31   -21 21 55.2         88268     695  Cg5781      
2002 04  11.54235  16 33 51.10   -21 21 54.7   22.0R 88268     568  Cf7160      
2002 04  11.61652  16 33 50.86   -21 21 54.2         88268     568  Cf7160      
2002 05  13.05928  16 31 44.67   -21 17 28.7         88268     950  Cf7160      
2002 05  13.12864  16 31 44.32   -21 17 28.0         88268     950  Cf7160      
2002 05  13.15942  16 31 44.17   -21 17 27.7         88268     950  Cf7160      
2002 07  09.99552  16 27 11.47   -21 08 09.8   21.7R 88268     304  Cf9823      
2002 07  10.16081  16 27 10.85   -21 08 08.7         88268     304  Cf9823      
2002 07  12.03462  16 27 04.08   -21 07 55.5         88268     304  Cf9823      
2002 07  12.05354  16 27 04.05   -21 07 55.3         88268     304  Cf9823      
2002 07  12.99742  16 27 00.69   -21 07 48.7         88268     304  Cf9823      
2002 07  13.05354  16 27 00.49   -21 07 48.5         88268     304  Cf9823      
2003 05  31.49144  16 35 55.59   -21 28 44.6   23.1R 88268     568  Ci1422      
2003 06  01.45366  16 35 50.73   -21 28 35.0         88268     568  Ci1422      
2004 04  22.50461  16 44 33.95   -21 47 44.4   22.7R 88268     568  Ck9562      
2004 04  22.59615  16 44 33.61   -21 47 43.8         88268     568  Ck9562      
2004 05  25.20473  16 42 06.98   -21 43 18.5   22.7R 88268     304  Ck8652      
2004 05  25.20641  16 42 06.96   -21 43 18.4         88268     304  Ck8652      
2004 05  25.20803  16 42 06.96   -21 43 18.4         88268     304  Ck8652      
2004 05  25.20926  16 42 06.96   -21 43 18.5         88268     304  Ck8652      
2004 05  25.21047  16 42 06.94   -21 43 18.5         88268     304  Ck8652      
2004 05  25.21205  16 42 06.94   -21 43 18.4         88268     304  Ck8652      
2004 05  25.21373  16 42 06.93   -21 43 18.4         88268     304  Ck8652      
2004 05  25.21541  16 42 06.92   -21 43 18.5         88268     304  Ck8652      
2004 05  25.21708  16 42 06.91   -21 43 18.4         88268     304  Ck8652      
2004 05  25.21887  16 42 06.89   -21 43 18.2         88268     304  Ck8652      
2004 05  25.22054  16 42 06.91   -21 43 18.4         88268     304  Ck8652      
2004 05  28.02954  16 41 52.68   -21 42 52.7   22.5R 88268     304  Ck8652      
2004 05  28.05155  16 41 52.57   -21 42 52.5         88268     304  Ck8652      
2004 05  28.07413  16 41 52.46   -21 42 52.3         88268     304  Ck8652      
2004 05  28.09696  16 41 52.34   -21 42 52.3         88268     304  Ck8652      
2004 05  28.12025  16 41 52.24   -21 42 51.9         88268     304  Ck8652      
2004 05  28.17352  16 41 51.95   -21 42 51.4         88268     304  Ck8652      

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    -0.21       0.00     0.38
  2   0.0002      0.00    -0.04       0.00     0.04
  3   0.0462      0.00     0.01       0.00     0.02
  4   0.0464      0.00     0.08       0.00    -0.07
  5   0.2379      0.00    -0.16       0.00    -0.07
  6   0.2406      0.00    -0.10       0.00    -0.43
  7   0.2434      0.00     0.09       0.00     0.13
  8   0.8822      0.00    -0.00       0.00     0.06
  9   0.8824      0.00    -0.02       0.00    -0.03
 10   0.8826      0.00     0.27       0.00    -0.06
 11   0.8828      0.00     0.09       0.00    -0.04
 12   0.9689      0.00     0.16       0.00    -0.08
 13   0.9691      0.00    -0.02       0.00    -0.07
 14   0.9691      0.00    -0.02       0.00    -0.08
 15   1.1275      0.00     0.04       0.00     0.03
 16   1.1279      0.00     0.08       0.00    -0.06
 17   1.1331      0.00     0.04       0.00    -0.08
 18   1.1331      0.00     0.62       0.00    -0.01
 19   1.1357      0.00    -0.01       0.00     0.13
 20   1.1359      0.00    -0.00       0.00    -0.04
 21   2.0187      0.00    -0.32       0.00     0.86
 22   2.0213      0.00     0.15       0.00     1.00
 23   2.9140      0.00     0.08       0.00     0.10
 24   2.9142      0.00     0.12       0.00     0.09
 25   3.0035      0.00     0.15       0.00    -0.10
 26   3.0035      0.00    -0.02       0.00    -0.01
 27   3.0035      0.00     0.10       0.00    -0.03
 28   3.0035      0.00     0.20       0.00    -0.14
 29   3.0035      0.00    -0.01       0.00    -0.15
 30   3.0035      0.00     0.11       0.00    -0.06
 31   3.0035      0.00     0.09       0.00    -0.08
 32   3.0035      0.00     0.07       0.00    -0.19
 33   3.0035      0.00     0.05       0.00    -0.11
 34   3.0035      0.00    -0.11       0.00     0.08
 35   3.0035      0.00     0.31       0.00    -0.14
 36   3.0112      0.00    -0.14       0.00    -0.06
 37   3.0113      0.00    -0.10       0.00    -0.06
 38   3.0114      0.00    -0.01       0.00    -0.06
 39   3.0114      0.00    -0.05       0.00    -0.26
 40   3.0115      0.00     0.24       0.00    -0.06
 41   3.0116      0.00     0.01       0.00    -0.04

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.

88268    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.273    42.272    42.273
ecceobj         0.018     0.018     0.018
incobj          1.889     1.889     1.889
qmin           40.651    40.640    40.669
qmax           44.598    44.556    44.625
amean          42.532    42.532    42.532
amin           42.204    42.204    42.204
amax           42.867    42.866    42.868
emean           0.023     0.023     0.023
emin            0.000     0.001     0.000
emax            0.041     0.040     0.041
imean           1.189     1.189     1.189
imin            0.518     0.518     0.518
imax            1.780     1.781     1.781
excite_mean     0.032     0.032     0.032
fracstop        1.000     1.000     1.000
cjmean          3.083     3.083     3.083

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       185.9     185.9     185.7
kozaiamp        179.9     179.9     180.0