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 Sat Mar 30 01:14:06 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     45 observations of     45
# Arc:   9.30y
# First observation: 2011/04/29
#  Last observation: 2020/08/15
# Chi-squared of fit:    11.79 DOF:     84 RMS:  0.09
# Min/Max residuals:    -0.21    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.560783E-05  2.273504E-02 -5.932119E-07 -6.947420E-04  2.366405E-02  1.591409E-03
# Covariance matrix:
  1.5705E-13  6.9119E-15 -2.6270E-15 -2.0867E-16  1.6370E-13  3.7533E-14
  6.9119E-15  4.1747E-14 -2.9510E-16 -1.1799E-15  5.9499E-14  2.0667E-13
 -2.6270E-15 -2.9510E-16  5.8654E-14 -7.9768E-15 -4.2717E-15 -4.4771E-16
 -2.0867E-16 -1.1799E-15 -7.9768E-15  2.4301E-15 -1.4223E-15 -6.3008E-15
  1.6370E-13  5.9499E-14 -4.2717E-15 -1.4223E-15  3.0468E-13  2.5062E-13
  3.7533E-14  2.0667E-13 -4.4771E-16 -6.3008E-15  2.5062E-13  1.1032E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.576148  -82.797961    0.863990    0.023498   -0.522848  2455680.864786
# Heliocentric elements and errors
Epoch:              2455680.5000  =  2011/04/29
Mean Anomaly:           81.11275 +/-     0.064
Argument of Peri:       36.99638 +/-     0.075
Long of Asc Node:      152.45249 +/-     0.002
Inclination:             3.05344 +/-     0.000
Eccentricity:         0.04776426 +/-    0.0000
Semi-Major Axis:     43.01080652 +/-    0.0036
Time of Perihelion: 2432466.4237 +/-      18.7
Perihelion:          40.95642717 +/-    0.0039
Aphelion:            45.06518587 +/-    0.0042
Period (y)              282.0815 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            4.50560515 +/-    0.0001
Ecliptic Y          -42.50989619 +/-    0.0010
Ecliptic Z            1.89937146 +/-    0.0000
Ecliptic XDOT         0.00263122 +/-    0.0000
Ecliptic YDOT         0.00014964 +/-    0.0000
Ecliptic ZDOT        -0.00007199 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.79014789 +/-    0.0010
Geocenter to KBO     42.25818474 +/-    0.0010
# Hcoef:  7.23

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      
2017 07  20.25325  18 58 26.362  -20 24 34.80  23.3r 11HF103   266  C~7ued      
2017 07  20.39364  18 58 25.680  -20 24 35.95  23.3r 11HF103   266  C~7ued      
2017 07  20.53088  18 58 25.014  -20 24 37.03  23.3r 11HF103   266  C~7ued      
2017 07  21.24888  18 58 21.618  -20 24 42.81  23.5r 11HF103   266  C~7ued      
2017 07  21.40287  18 58 20.875  -20 24 44.08  23.5r 11HF103   266  C~7ued      
2017 07  21.50353  18 58 20.389  -20 24 44.87  23.5r 11HF103   266  C~7ued      
2020 06  20.45583  19 17 23.947  -20 01 51.27  23.5r 11HF103   266  C~7ued      
2020 06  20.52860  19 17 23.606  -20 01 51.86  23.5r 11HF103   266  C~7ued      
2020 06  20.62233  19 17 23.167  -20 01 52.59  23.5r 11HF103   266  C~7ued      
2020 06  25.44823  19 17 00.611  -20 02 32.80  23.5r 11HF103   266  C~7ued      
2020 06  25.52513  19 17 00.240  -20 02 33.45  23.5r 11HF103   266  C~7ued      
2020 06  25.60088  19 16 59.874  -20 02 34.09  23.5r 11HF103   266  C~7ued      
2020 08  15.24331  19 13 05.797  -20 10 34.18  23.2r 11HF103   266  C~7ued      
2020 08  15.33985  19 13 05.423  -20 10 35.07  23.2r 11HF103   266  C~7ued      
2020 08  15.42111  19 13 05.109  -20 10 35.79  23.2r 11HF103   266  C~7ued      

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    -0.09       0.00     0.02
     2   0.0000      0.00    -0.07       0.00     0.02
     3   0.0051      0.00     0.05       0.00    -0.18
     4   0.0054      0.00    -0.17       0.00    -0.09
     5   0.0054      0.00     0.09       0.00     0.01
     6   0.0828      0.00    -0.15       0.00    -0.11
     7   0.0851      0.00    -0.05       0.00    -0.07
     8   0.0877      0.00     0.12       0.00    -0.21
     9   0.0879      0.00     0.14       0.00    -0.20
    10   0.0881      0.00    -0.01       0.00    -0.07
    11   0.0906      0.00    -0.06       0.00     0.01
    12   0.1745      0.00     0.06       0.00     0.09
    13   0.1745      0.00     0.10       0.00     0.10
    14   0.1748      0.00     0.02       0.00     0.03
    15   0.1748      0.00     0.10       0.00     0.03
    16   0.1750      0.00     0.09       0.00     0.10
    17   0.1751      0.00    -0.04       0.00     0.14
    18   0.1751      0.00     0.05       0.00     0.05
    19   0.1752      0.00     0.01       0.00     0.06
    20   0.1753      0.00    -0.03       0.00     0.11
    21   0.1757      0.00    -0.13       0.00    -0.12
    22   1.2209      0.00     0.05       0.00     0.05
    23   1.2211      0.00    -0.08       0.00     0.05
    24   1.2213      0.00    -0.20       0.00    -0.09
    25   3.1567      0.00     0.15       0.00     0.10
    26   3.1568      0.00     0.15       0.00     0.07
    27   3.1570      0.00     0.09       0.00     0.11
    28   3.1622      0.00     0.17       0.00     0.07
    29   5.1719      0.00     0.06       0.00     0.10
    30   5.1719      0.00     0.13       0.00     0.17
    31   6.2256      0.00    -0.11       0.00    -0.05
    32   6.2260      0.00    -0.12       0.00    -0.05
    33   6.2263      0.00    -0.13       0.00    -0.04
    34   6.2283      0.00    -0.10       0.00    -0.03
    35   6.2287      0.00    -0.09       0.00    -0.04
    36   6.2290      0.00    -0.09       0.00    -0.03
    37   9.1447      0.00    -0.02       0.00    -0.03
    38   9.1449      0.00    -0.02       0.00    -0.03
    39   9.1451      0.00    -0.03       0.00    -0.02
    40   9.1583      0.00     0.00       0.00    -0.02
    41   9.1586      0.00     0.01       0.00    -0.02
    42   9.1588      0.00    -0.01       0.00    -0.03
    43   9.2974      0.00     0.05       0.00     0.01
    44   9.2977      0.00     0.04       0.00     0.00
    45   9.2979      0.00     0.04       0.00     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.

11HF103    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.830    42.830    42.830
ecceobj         0.047     0.047     0.047
incobj          3.054     3.054     3.054
qmin           40.198    40.196    40.199
qmax           46.141    46.141    46.142
amean          43.059    43.059    43.059
amin           42.721    42.721    42.725
amax           43.408    43.407    43.407
emean           0.043     0.043     0.043
emin            0.024     0.024     0.024
emax            0.063     0.063     0.063
imean           3.084     3.084     3.084
imin            2.049     2.049     2.050
imax            3.932     3.932     3.932
excite_mean     0.070     0.070     0.070
fracstop        1.000     1.000     1.000
cjmean          3.084     3.084     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       183.1     183.2     183.1
kozaiamp        180.0     179.9     180.0