Orbit Fit and Astrometric record for 08CL94

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: 08CL94    
# Created Thu May 24 01:37:48 2012
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   36 observations of   37
# Arc:   1.10y
# First observation: 2008/02/08
#  Last observation: 2009/03/17
# Chi-squared of fit:   214.40 DOF:   66 RMS:  0.43
# Min/Max residuals:    -0.73    0.78
# Exact a, adot, b, bdot, g, gdot:
  4.171125E-05  5.709619E-01 -6.071805E-06 -6.120914E-02  2.105092E-01  9.521429E-02
# Covariance matrix:
  1.8838E-13  5.3630E-12  2.6224E-14 -6.1167E-13  1.2720E-12  9.3644E-12
  5.3630E-12  1.0098E-09  5.1706E-12 -1.1371E-10  2.0092E-10  1.7408E-09
  2.6224E-14  5.1706E-12  1.1286E-13 -6.6608E-13  1.0246E-12  8.9154E-12
 -6.1167E-13 -1.1371E-10 -6.6608E-13  1.2946E-11 -2.2622E-11 -1.9604E-10
  1.2720E-12  2.0092E-10  1.0246E-12 -2.2622E-11  4.0469E-11  3.4634E-10
  9.3644E-12  1.7408E-09  8.9154E-12 -1.9604E-10  3.4634E-10  3.0014E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.647323  167.970602    0.484374    0.114922   -0.855462  2454504.897894
# Heliocentric elements and errors
Epoch:              2454504.5000  =  2008/02/08
Mean Anomaly:           37.44467 +/-     0.008
Argument of Peri:       82.35608 +/-     0.016
Long of Asc Node:       33.48288 +/-     0.001
Inclination:             8.34460 +/-     0.000
Eccentricity:         0.11998462 +/-    0.0001
Semi-Major Axis:      6.17643126 +/-    0.0003
Time of Perihelion: 2453921.3338 +/-       0.1
Perihelion:           5.43535450 +/-    0.0006
Aphelion:             6.91750802 +/-    0.0007
Period (y)               15.3502 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -5.34794604 +/-    0.0001
Ecliptic Y            1.62970390 +/-    0.0000
Ecliptic Z            0.63213676 +/-    0.0000
Ecliptic XDOT        -0.00284518 +/-    0.0000
Ecliptic YDOT        -0.00698519 +/-    0.0000
Ecliptic ZDOT        -0.00062432 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    5.62635540 +/-    0.0001
Geocenter to KBO      4.75038594 +/-    0.0001
# Hcoef: 12.32

The following table shows the complete astrometric record for 08CL94. 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 (08CL94) followed by the observatory code and reference code for the source of the astrometry.

2008 02  08.39714  11 27 55.15   +11 47 10.0   20.8V 08CL94    G96  Cx7769      
2008 02  08.40454  11 27 55.00   +11 47 11.8   20.7V 08CL94    G96  Cx7769      
2008 02  08.41196  11 27 54.82   +11 47 12.5   20.6V 08CL94    G96  Cx7769      
2008 02  08.41936  11 27 54.64   +11 47 13.8   20.2V 08CL94    G96  Cx7769      
2008 02  10.34879  11 27 14.04   +11 52 00.3   20.3V 08CL94    691  Cx7769      
2008 02  10.36642  11 27 13.64   +11 52 02.9   20.2V 08CL94    691  Cx7769      
2008 02  10.38407  11 27 13.22   +11 52 05.9   20.2V 08CL94    691  Cx7769      
2008 03  05.29645  11 16 57.10   +12 53 03.0   20.0V 08CL94    G96  Cy4097      
2008 03  05.30161  11 16 56.96   +12 53 03.9   19.5V 08CL94    G96  Cy4097      
2008 03  05.30669  11 16 56.82   +12 53 04.9   19.3V 08CL94    G96  Cy4097      
2008 03  05.31177  11 16 56.67   +12 53 05.4   19.5V 08CL94    G96  Cy4097      
2008 03  12.29298  11 13 39.10   +13 08 56.3   20.1V 08CL94    G96  Cy4097      
2008 03  12.29991  11 13 38.89   +13 08 57.5   20.1V 08CL94    G96  Cy4097      
2008 03  12.30682  11 13 38.67   +13 08 58.5   20.0V 08CL94    G96  Cy4097      
2008 03  12.31377  11 13 38.49   +13 08 59.2   20.1V 08CL94    G96  Cy4098      
2008 04  04.24796  11 03 54.18   +13 43 33.3   20.2V 08CL94    G96  Cy5819      
2008 04  04.25461  11 03 54.03   +13 43 33.8   20.2V 08CL94    G96  Cy5819      
2008 04  04.26127  11 03 53.85   +13 43 34.0   20.1V 08CL94    G96  Cy5819      
2008 04  04.26791  11 03 53.71   +13 43 33.7   20.2V 08CL94    G96  Cy5819      
2009 02  20.45793  13 10 40.94   -03 29 27.3   19.9V 08CL94    691  C~05Gv      
2009 02  20.47603  13 10 40.75   -03 29 26.6   20.0V 08CL94    691  C~05Gv      
2009 02  20.49438  13 10 40.44   -03 29 24.5   19.9V 08CL94    691  C~05Gv      
2009 02  24.42272  13 09 46.59   -03 24 33.9         08CL94    691  C~05Gv      
2009 02  24.44080  13 09 46.35   -03 24 32.4         08CL94    691  C~05Gv      
2009 02  24.45913  13 09 46.07   -03 24 31.0         08CL94    691  C~05Gv      
2009 03  17.40185  13 02 46.24   -02 48 08.1   20.1V 08CL94    G96  C~05Gv      
2009 03  17.40808  13 02 45.99   -02 48 06.9   19.3V 08CL94    G96  C~05Gv      
2009 03  17.41428  13 02 45.92   -02 48 06.6   19.8V 08CL94    G96  C~05Gv      
2009 03  17.42040  13 02 45.78   -02 48 05.6   19.6V 08CL94    G96  C~05Gv      
2009 03  17.47154  13 02 44.48   -02 47 58.4   19.3V 08CL94    G96  C~05Gv      
2009 03  17.47378  13 02 44.44   -02 47 58.7   19.5V 08CL94    G96  C~05Gv      
2009 03  17.47465  13 02 44.41   -02 47 58.0   19.4V 08CL94    G96  C~05Gv      
2009 03  17.47692  13 02 44.34   -02 47 58.4   19.4V 08CL94    G96  C~05Gv      
2009 03  17.47778  13 02 44.33   -02 47 57.4   19.3V 08CL94    G96  C~05Gv      
2009 03  17.48002  13 02 44.30   -02 47 58.5   19.9V 08CL94    G96  C~05Gv      
2009 03  17.48089  13 02 44.26   -02 47 57.8   19.3V 08CL94    G96  C~05Gv      
2009 03  17.48314  13 02 44.16   -02 47 57.5   19.2V 08CL94    G96  C~05Gv      

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 (  -1.03)      0.00 (   5.12)
  2   0.0000      0.00     0.70       0.00     0.78
  3   0.0000      0.00     0.37       0.00     0.38
  4   0.0001      0.00     0.03       0.00     0.59
  5   0.0053      0.00     0.40       0.00    -0.38
  6   0.0054      0.00     0.27       0.00    -0.44
  7   0.0054      0.00    -0.14       0.00    -0.09
  8   0.0709      0.00     0.39       0.00    -0.67
  9   0.0709      0.00     0.53       0.00    -0.51
 10   0.0709      0.00     0.64       0.00    -0.24
 11   0.0710      0.00     0.59       0.00    -0.47
 12   0.0901      0.00     0.48       0.00    -0.58
 13   0.0901      0.00     0.32       0.00    -0.27
 14   0.0901      0.00     0.01       0.00    -0.15
 15   0.0901      0.00     0.32       0.00    -0.34
 16   0.1529      0.00     0.32       0.00     0.22
 17   0.1529      0.00     0.27       0.00     0.41
 18   0.1529      0.00    -0.24       0.00     0.30
 19   0.1530      0.00    -0.14       0.00    -0.31
 20   1.0351      0.00    -0.08       0.00     0.27
 21   1.0351      0.00     0.64       0.00    -0.27
 22   1.0352      0.00    -0.39       0.00     0.58
 23   1.0459      0.00    -0.35       0.00    -0.01
 24   1.0460      0.00     0.24       0.00     0.04
 25   1.0460      0.00     0.30       0.00    -0.02
 26   1.1034      0.00     0.73       0.00    -0.71
 27   1.1034      0.00    -0.69       0.00    -0.27
 28   1.1034      0.00     0.57       0.00    -0.73
 29   1.1034      0.00     0.76       0.00    -0.48
 30   1.1036      0.00     0.33       0.00     0.44
 31   1.1036      0.00     0.56       0.00    -0.14
 32   1.1036      0.00     0.43       0.00     0.46
 33   1.1036      0.00     0.23       0.00    -0.22
 34   1.1036      0.00     0.40       0.00     0.67
 35   1.1036      0.00     0.78       0.00    -0.70
 36   1.1036      0.00     0.50       0.00    -0.11
 37   1.1036      0.00    -0.16       0.00    -0.09

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.

08CL94    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj         6.213     6.213     6.213
ecceobj         0.120     0.120     0.120
incobj          8.333     8.333     8.333
qmin            5.452     5.452     5.452
qmax            6.955     6.955     6.955
amean           6.204     6.204     6.204
amin            6.204     6.204     6.204
amax            6.204     6.204     6.204
emean           0.121     0.121     0.121
emin            0.121     0.121     0.121
emax            0.121     0.121     0.121
imean           8.047     8.047     8.047
imin            8.047     8.047     8.047
imax            8.047     8.047     8.047
excite_mean     0.185     0.185     0.185
fracstop        0.000     0.000     0.000
cjmean          5.743     5.743     5.743

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        81.5      81.5      81.5
kozaiamp          0.0       0.0       0.0