Orbit Fit and Astrometric record for 11HF103

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: 11HF103   
# Created Thu Dec 14 02:37:41 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   5.17y
# First observation: 2011/04/29
#  Last observation: 2016/06/30
Preliminary a, adot, b, bdot, g, gdot:
   0.000004   0.022948  -0.000001  -0.000700   0.023914   0.000000
# Chi-squared of fit:     7.47 DOF:   54 RMS:  0.09
# Min/Max residuals:    -0.22    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.554006E-05  2.273514E-02 -6.775825E-07 -6.946023E-04  2.366401E-02  1.591520E-03
# Covariance matrix:
  2.0438E-13  1.6800E-14 -3.6267E-15 -9.2769E-16  2.4082E-13  2.1602E-13
  1.6800E-14  2.3078E-13 -7.9863E-16 -6.5204E-15  1.6014E-13  2.4238E-12
 -3.6267E-15 -7.9863E-16  6.7377E-14 -1.9787E-14 -6.2893E-15 -3.7118E-15
 -9.2769E-16 -6.5204E-15 -1.9787E-14  2.0706E-14 -4.6278E-15 -7.5487E-14
  2.4082E-13  1.6014E-13 -6.2893E-15 -4.6278E-15  4.6882E-13  1.5104E-12
  2.1602E-13  2.4238E-12 -3.7118E-15 -7.5487E-14  1.5104E-12  2.8264E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.576148  -82.797961    0.863989    0.023498   -0.522848  2455680.864786
# Heliocentric elements and errors
Epoch:              2455680.5000  =  2011/04/29
Mean Anomaly:           81.09641 +/-     0.082
Argument of Peri:       37.00660 +/-     0.090
Long of Asc Node:      152.45807 +/-     0.006
Inclination:             3.05324 +/-     0.000
Eccentricity:         0.04777026 +/-    0.0002
Semi-Major Axis:     43.01147410 +/-    0.0045
Time of Perihelion: 2432470.5576 +/-      23.3
Perihelion:          40.95680491 +/-    0.0109
Aphelion:            45.06614329 +/-    0.0111
Period (y)              282.0881 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            4.50561026 +/-    0.0001
Ecliptic Y          -42.50995949 +/-    0.0012
Ecliptic Z            1.89937075 +/-    0.0001
Ecliptic XDOT         0.00263124 +/-    0.0000
Ecliptic YDOT         0.00014963 +/-    0.0000
Ecliptic ZDOT        -0.00007197 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.79024175 +/-    0.0012
Geocenter to KBO     42.25826049 +/-    0.0012
# Hcoef:  8.45

The following table shows the complete astrometric record for 11HF103. 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 (11HF103) followed by the observatory code and reference code for the source of the astrometry.

2011 04  29.36402  18 30 46.24   -20 40 15.7         11HF103   268  C~0rTt      
2011 04  29.36469  18 30 46.24   -20 40 15.7         11HF103   268  C~0rTt      
2011 05  01.21102  18 30 42.22   -20 40 13.7         11HF103   268  C~0rTt      
2011 05  01.33730  18 30 41.91   -20 40 13.5   24.5R 11HF103   268  C~0rTt      
2011 05  01.34453  18 30 41.91   -20 40 13.4         11HF103   268  C~0rTt      
2011 05  29.61134  18 29 07.22   -20 40 20.9         11HF103   266  C~0rTt      
2011 05  30.45604  18 29 03.63   -20 40 22.2         11HF103   266  C~0rTt      
2011 05  31.40909  18 28 59.53   -20 40 23.9         11HF103   266  C~0rTt      
2011 05  31.46823  18 28 59.27   -20 40 24.0         11HF103   266  C~0rTt      
2011 05  31.54711  18 28 58.91   -20 40 24.0         11HF103   266  C~0rTt      
2011 06  01.45454  18 28 54.95   -20 40 25.5         11HF103   266  C~0rTt      
2011 07  02.08197  18 26 26.93   -20 41 53.7         11HF103   269  C~0rTt      
2011 07  02.08254  18 26 26.93   -20 41 53.7         11HF103   269  C~0rTt      
2011 07  02.19156  18 26 26.37   -20 41 54.2         11HF103   269  C~0rTt      
2011 07  02.19262  18 26 26.37   -20 41 54.2         11HF103   269  C~0rTt      
2011 07  02.27869  18 26 25.95   -20 41 54.6         11HF103   266  C~0rTt      
2011 07  02.30292  18 26 25.80   -20 41 54.5         11HF103   269  C~0rTt      
2011 07  02.30411  18 26 25.80   -20 41 54.6         11HF103   269  C~0rTt      
2011 07  02.34060  18 26 25.63   -20 41 54.9         11HF103   266  C~0rTt      
2011 07  02.40298  18 26 25.31   -20 41 55.1         11HF103   266  C~0rTt      
2011 07  02.52936  18 26 24.66   -20 41 55.8         11HF103   266  C~0rTt      
2012 07  18.28255  18 30 41.72   -20 41 38.0         11HF103   267  C~0rTt      
2012 07  18.35833  18 30 41.35   -20 41 38.4         11HF103   267  C~0rTt      
2012 07  18.44885  18 30 40.91   -20 41 39.0         11HF103   267  C~0rTt      
2014 06  25.36615  18 43 48.636  -20 34 25.51        11HF103   266  C~2Gt6      
2014 06  25.38912  18 43 48.520  -20 34 25.67        11HF103   266  C~2Gt6      
2014 06  25.45518  18 43 48.183  -20 34 25.98        11HF103   266  C~2Gt6      
2014 06  27.36210  18 43 38.724  -20 34 36.19        11HF103   266  C~2Gt6      
2016 06  30.39261  18 54 29.545  -20 26 59.52        11HF103   266  C~2Gt6      
2016 06  30.40107  18 54 29.507  -20 26 59.51        11HF103   266  C~2Gt6      

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    -0.07       0.00     0.04
  2   0.0000      0.00    -0.05       0.00     0.04
  3   0.0051    -56.23     0.05       5.00    -0.16
  4   0.0054    -60.57    -0.15       5.43    -0.06
  5   0.0054    -60.56     0.10       5.53     0.02
  6   0.0828  -1388.08    -0.14      67.11    -0.09
  7   0.0851  -1438.47    -0.05      68.37    -0.06
  8   0.0877  -1496.02     0.11      69.59    -0.20
  9   0.0879  -1499.67     0.13      69.67    -0.19
 10   0.0881  -1504.72    -0.01      69.93    -0.05
 11   0.0906  -1560.30    -0.05      71.23     0.02
 12   0.1745  -3639.64     0.06      83.99     0.10
 13   0.1745  -3639.64     0.10      83.99     0.10
 14   0.1748  -3647.52     0.02      83.85     0.04
 15   0.1748  -3647.52     0.10      83.85     0.04
 16   0.1750  -3653.42     0.10      83.73     0.11
 17   0.1751  -3655.52    -0.03      83.93     0.16
 18   0.1751  -3655.53     0.05      83.83     0.06
 19   0.1752  -3657.92     0.01      83.64     0.07
 20   0.1753  -3662.42    -0.02      83.65     0.12
 21   0.1757  -3671.57    -0.12      83.37    -0.10
 22   1.2209    -67.72     0.02     -78.81     0.03
 23   1.2211    -72.93    -0.10     -78.93     0.04
 24   1.2213    -79.13    -0.22     -79.20    -0.10
 25   3.1567  10994.28     0.07    -346.27     0.02
 26   3.1568  10992.64     0.06    -346.31    -0.02
 27   3.1570  10987.88     0.01    -346.27     0.03
 28   3.1622  10854.28     0.08    -346.73    -0.01
 29   5.1719  20057.23    -0.07    -636.87    -0.04
 30   5.1719  20056.70    -0.00    -636.81     0.02

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.

11HF103    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.831    42.844    42.817
ecceobj         0.047     0.047     0.046
incobj          3.054     3.054     3.054
qmin           40.201    40.202    40.159
qmax           46.131    46.142    46.074
amean          43.060    43.073    43.046
amin           42.730    42.745    42.714
amax           43.409    43.414    43.388
emean           0.043     0.044     0.043
emin            0.024     0.025     0.024
emax            0.063     0.063     0.063
imean           3.084     3.079     3.089
imin            2.050     2.051     2.048
imax            3.932     3.924     3.941
excite_mean     0.070     0.070     0.070
fracstop        1.000     1.000     1.000
cjmean          3.084     3.085     3.084

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       182.8     182.6     182.9
kozaiamp        180.0     180.0     180.0