Orbit Fit and Astrometric record for 09KO30

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: 09KO30    
# Created Mon Dec 18 02:37:33 2017
# Orbit generated from Bernstein formalism
# Fitting   38 observations of   38
# Arc:   2.02y
# First observation: 2009/05/25
#  Last observation: 2011/06/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000010   0.019127   0.000001  -0.003052   0.021577   0.000000
# Chi-squared of fit:    17.46 DOF:   70 RMS:  0.12
# Min/Max residuals:    -0.36    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.419164E-05  1.914580E-02 -2.261958E-06 -3.047311E-03  2.178997E-02 -7.127687E-04
# Covariance matrix:
  7.2157E-14 -5.8408E-14 -4.8991E-16  3.0973E-15  7.1593E-14 -7.0736E-13
 -5.8408E-14  7.6143E-13  6.9828E-15 -1.1438E-13  3.0837E-13  2.7232E-11
 -4.8991E-16  6.9828E-15  5.7034E-14 -5.2088E-14  1.4610E-15  3.1673E-13
  3.0973E-15 -1.1438E-13 -5.2088E-14  1.6296E-13 -4.8506E-14 -5.0671E-12
  7.1593E-14  3.0837E-13  1.4610E-15 -4.8506E-14  5.2948E-13  1.1699E-11
 -7.0736E-13  2.7232E-11  3.1673E-13 -5.0671E-12  1.1699E-11  1.2057E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.526460 -110.781653    0.090978   -0.044403   -1.005554  2454977.015284
# Heliocentric elements and errors
Epoch:              2454970.5000  =  2009/05/19
Mean Anomaly:          218.59943 +/-     1.145
Argument of Peri:      341.36134 +/-     1.141
Long of Asc Node:       53.94916 +/-     0.002
Inclination:             9.37234 +/-     0.001
Eccentricity:         0.06908321 +/-    0.0010
Semi-Major Axis:     44.42688094 +/-    0.0067
Time of Perihelion: 2497453.5645 +/-     343.9
Perihelion:          41.35772919 +/-    0.0439
Aphelion:            47.49603270 +/-    0.0441
Period (y)              296.1263 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.70594183 +/-    0.0005
Ecliptic Y          -43.77817446 +/-    0.0014
Ecliptic Z           -2.02303941 +/-    0.0001
Ecliptic XDOT         0.00229174 +/-    0.0000
Ecliptic YDOT        -0.00074998 +/-    0.0000
Ecliptic ZDOT        -0.00037867 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.90106331 +/-    0.0013
Geocenter to KBO     45.89268385 +/-    0.0015
# Hcoef:  8.71

The following table shows the complete astrometric record for 09KO30. 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 (09KO30) followed by the observatory code and reference code for the source of the astrometry.

2009 05  25.514518 16 28 25.71   -24 19 45.24  25.0R 09KO30    568  C~07fN      
2009 05  25.517041 16 28 25.69   -24 19 45.10  24.4R 09KO30    568  C~07fN      
2009 05  25.519597 16 28 25.69   -24 19 45.27  24.6R 09KO30    568  C~07fN      
2009 05  25.522212 16 28 25.68   -24 19 45.11  25.3R 09KO30    568  C~07fN      
2009 05  25.524866 16 28 25.67   -24 19 45.24  25.4R 09KO30    568  C~07fN      
2009 05  25.527423 16 28 25.66   -24 19 45.19  24.8R 09KO30    568  C~07fN      
2009 05  25.532619 16 28 25.64   -24 19 45.14  24.8R 09KO30    568  C~07fN      
2009 05  26.540061 16 28 20.85   -24 19 36.89  25.6R 09KO30    568  C~07fN      
2009 05  26.553535 16 28 20.79   -24 19 36.63  25.1R 09KO30    568  C~07fN      
2009 05  26.559042 16 28 20.75   -24 19 36.46  25.8R 09KO30    568  C~07fN      
2009 05  26.561672 16 28 20.74   -24 19 37.01  25.2R 09KO30    568  C~07fN      
2009 05  26.564366 16 28 20.71   -24 19 36.74  24.8R 09KO30    568  C~07fN      
2009 05  27.367988 16 28 16.94   -24 19 30.25  24.1R 09KO30    568  C~07fN      
2009 05  27.499944 16 28 16.32   -24 19 29.26  24.8R 09KO30    568  C~07fN      
2009 05  27.502480 16 28 16.29   -24 19 29.09  25.0R 09KO30    568  C~07fN      
2009 05  27.505047 16 28 16.28   -24 19 28.99  25.2R 09KO30    568  C~07fN      
2009 05  27.507654 16 28 16.27   -24 19 29.08  24.6R 09KO30    568  C~07fN      
2009 05  27.558348 16 28 16.03   -24 19 28.51  24.6R 09KO30    568  C~07fN      
2009 05  27.560926 16 28 16.01   -24 19 28.59  24.9R 09KO30    568  C~07fN      
2009 05  27.563465 16 28 16.01   -24 19 28.67  24.7R 09KO30    568  C~07fN      
2009 05  27.566071 16 28 15.99   -24 19 28.54  25.1R 09KO30    568  C~07fN      
2009 07  17.36181  16 24 44.38   -24 12 12.7   24.9i 09KO30    568  C~08CW      
2009 07  17.36550  16 24 44.36   -24 12 12.7   25.0i 09KO30    568  C~08CW      
2009 07  17.36714  16 24 44.35   -24 12 12.5   25.6i 09KO30    568  C~08CW      
2009 07  17.36970  16 24 44.35   -24 12 12.6   24.9i 09KO30    568  C~08CW      
2009 08  22.25207  16 23 48.92   -24 09 23.6   25.3R 09KO30    568  C~08eG      
2009 08  22.31259  16 23 48.88   -24 09 23.4   24.6R 09KO30    568  C~08eG      
2010 06  11.26830  16 31 46.89   -24 37 50.6   24.8  09KO30    568  C~0Oqh      
2010 06  11.26934  16 31 46.87   -24 37 50.4         09KO30    568  C~0Oqh      
2010 06  11.27037  16 31 46.86   -24 37 50.7         09KO30    568  C~0Oqh      
2010 06  11.27140  16 31 46.85   -24 37 50.6         09KO30    568  C~0Oqh      
2010 06  11.27243  16 31 46.87   -24 37 50.5         09KO30    568  C~0Oqh      
2010 06  11.41251  16 31 46.20   -24 37 49.3         09KO30    568  C~0Oqh      
2010 06  11.41364  16 31 46.19   -24 37 49.4         09KO30    568  C~0Oqh      
2010 06  11.41466  16 31 46.19   -24 37 49.2         09KO30    568  C~0Oqh      
2010 06  11.41577  16 31 46.19   -24 37 49.3         09KO30    568  C~0Oqh      
2010 06  11.41681  16 31 46.18   -24 37 49.3         09KO30    568  C~0Oqh      
2011 06  03.51184  16 37 05.52   -24 58 49.2   25.4r 09KO30    568  C~0Wc3      

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    -0.06       0.00     0.01
  2   0.0000     -0.29    -0.19       0.10     0.11
  3   0.0000     -0.27     0.01      -0.07    -0.05
  4   0.0000     -0.43     0.02       0.06     0.09
  5   0.0000     -0.54     0.08      -0.08    -0.05
  6   0.0000     -0.68     0.11      -0.06    -0.02
  7   0.0000     -0.96     0.18      -0.05    -0.00
  8   0.0028    -66.92    -0.06      -2.04     0.03
  9   0.0028    -67.77    -0.02      -1.91     0.19
 10   0.0029    -68.34    -0.22      -1.83     0.28
 11   0.0029    -68.38    -0.09      -2.40    -0.28
 12   0.0029    -68.83    -0.36      -2.19    -0.07
 13   0.0051   -120.74     0.01      -3.77    -0.09
 14   0.0054   -129.27     0.25      -4.11    -0.14
 15   0.0054   -129.70    -0.01      -4.01    -0.03
 16   0.0054   -129.85     0.01      -3.93     0.05
 17   0.0055   -129.97     0.06      -4.04    -0.06
 18   0.0056   -133.30     0.09      -3.98     0.09
 19   0.0056   -133.56     0.01      -4.11    -0.03
 20   0.0056   -133.55     0.19      -4.18    -0.10
 21   0.0056   -133.84     0.07      -4.10    -0.01
 22   0.1447  -3060.31     0.04     -31.85     0.00
 23   0.1447  -3060.58    -0.07     -31.89    -0.04
 24   0.1447  -3060.75    -0.17     -31.71     0.13
 25   0.1447  -3060.73    -0.05     -31.81     0.03
 26   0.2430  -3836.82     0.35      11.90    -0.03
 27   0.2431  -3837.39    -0.16      12.00    -0.02
 28   1.0452   2879.61     0.12    -655.62    -0.03
 29   1.0452   2879.31    -0.11    -655.47     0.13
 30   1.0452   2879.22    -0.14    -655.78    -0.19
 31   1.0452   2879.07    -0.22    -655.71    -0.11
 32   1.0452   2879.33     0.10    -655.57     0.03
 33   1.0456   2870.11     0.04    -655.74     0.05
 34   1.0456   2869.99    -0.01    -655.86    -0.06
 35   1.0456   2869.96     0.03    -655.66     0.13
 36   1.0456   2869.98     0.11    -655.76     0.04
 37   1.0456   2869.84     0.05    -655.78     0.02
 38   2.0233   7357.18     0.01   -1276.36    -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.

09KO30    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.038    44.057    44.020
ecceobj         0.076     0.078     0.075
incobj          9.408     9.407     9.408
qmin           40.182    40.164    40.262
qmax           48.642    48.721    48.557
amean          44.318    44.339    44.302
amin           43.969    43.984    43.942
amax           44.695    44.717    44.680
emean           0.076     0.077     0.074
emin            0.062     0.064     0.061
emax            0.089     0.090     0.087
imean           8.021     8.018     8.023
imin            7.476     7.471     7.480
imax            8.566     8.566     8.566
excite_mean     0.159     0.160     0.158
fracstop        1.000     1.000     1.000
cjmean          3.075     3.075     3.075

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       172.7     173.3     172.6
kozaiamp        180.0     180.0     180.0