Orbit Fit and Astrometric record for 06HC123

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: 06HC123   
# Created Fri Dec  3 02:10:26 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     14 observations of     14
# Arc:   8.83y
# First observation: 2004/07/08
#  Last observation: 2013/05/08
# Chi-squared of fit:    14.76 DOF:     22 RMS:  0.18
# Min/Max residuals:    -0.27    0.69
# Exact a, adot, b, bdot, g, gdot:
  1.473628E-05  2.306209E-02 -2.481384E-06 -5.123951E-03  2.521959E-02  1.720471E-03
# Covariance matrix:
  4.6369E-13 -2.5699E-13 -4.7731E-14  4.5414E-14 -5.1925E-14 -9.1929E-13
 -2.5699E-13  3.3847E-13  6.5983E-14 -6.2469E-14 -2.0866E-13  1.2554E-12
 -4.7731E-14  6.5983E-14  2.3695E-13 -4.7127E-14 -3.5593E-14  2.5488E-13
  4.5414E-14 -6.2469E-14 -4.7127E-14  2.2617E-14  3.3209E-14 -2.4147E-13
 -5.1925E-14 -2.0866E-13 -3.5593E-14  3.3209E-14  5.5342E-13 -6.5300E-13
 -9.1929E-13  1.2554E-12  2.5488E-13 -2.4147E-13 -6.5300E-13  4.8578E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.943100 -128.164437   -0.832483    0.009729   -0.588148  2453194.797954
# Heliocentric elements and errors
Epoch:              2453194.5000  =  2004/07/08
Mean Anomaly:          130.64200 +/-     0.065
Argument of Peri:       34.45744 +/-     0.053
Long of Asc Node:       57.18005 +/-     0.000
Inclination:            12.58796 +/-     0.000
Eccentricity:         0.13672162 +/-    0.0001
Semi-Major Axis:     36.64133508 +/-    0.0049
Time of Perihelion: 2423795.2878 +/-      15.9
Perihelion:          31.63167241 +/-    0.0047
Aphelion:            41.65099775 +/-    0.0059
Period (y)              221.8018 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.21081756 +/-    0.0007
Ecliptic Y          -32.14727433 +/-    0.0009
Ecliptic Z            0.65258616 +/-    0.0000
Ecliptic XDOT         0.00184517 +/-    0.0000
Ecliptic YDOT        -0.00170806 +/-    0.0000
Ecliptic ZDOT        -0.00055300 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.24962477 +/-    0.0009
Geocenter to KBO     39.65172165 +/-    0.0012
# Hcoef:  7.32

The following table shows the complete astrometric record for 06HC123. 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 (06HC123) followed by the observatory code and reference code for the source of the astrometry.

2004 07  08.297211 15 18 41.32   -17 18 49.7   22.5I 06HC123   568  C~5FpU      
2004 07  08.358987 15 18 41.15   -17 18 49.4   22.7I 06HC123   568  C~5FpU      
2004 07  08.420271 15 18 40.99   -17 18 49.1         06HC123   568  C~5FpU      
2006 04  28.24836  15 34 17.61   -18 48 03.3   22.0R 06HC123   807  Cr3609      
2006 04  28.30820  15 34 17.32   -18 48 02.6         06HC123   807  Cr3609      
2006 05  01.37825  15 34 01.99   -18 47 17.7   23.8R 06HC123   695  Cr3609      
2006 05  01.45083  15 34 01.64   -18 47 17.2         06HC123   695  Cr3609      
2006 07  28.01709  15 28 09.49   -18 31 18.5   23.5R 06HC123   304  Cr5556      
2006 07  28.12370  15 28 09.36   -18 31 18.3         06HC123   304  Cr5556      
2007 04  21.22080  15 40 01.00   -19 25 14.5   22.5R 06HC123   807  C~5FpU      
2007 04  21.31409  15 40 00.55   -19 25 13.2         06HC123   807  C~5FpU      
2013 05  08.26404  16 09 45.252  -22 40 41.41  24.0r 06HC123   807  C~5FpU      
2013 05  08.33315  16 09 44.888  -22 40 40.70        06HC123   807  C~5FpU      
2013 05  08.38256  16 09 44.622  -22 40 40.21        06HC123   807  C~5FpU      

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    -0.10       0.00    -0.13
     2   0.0002      0.00    -0.13       0.00    -0.20
     3   0.0003      0.00    -0.06       0.00    -0.27
     4   1.8041      0.00    -0.02       0.00     0.06
     5   1.8043      0.00     0.14       0.00    -0.10
     6   1.8127      0.00    -0.12       0.00     0.69
     7   1.8129      0.00     0.19       0.00     0.12
     8   2.0526      0.00     0.09       0.00     0.06
     9   2.0529      0.00     0.07       0.00     0.17
    10   2.7842      0.00     0.06       0.00    -0.21
    11   2.7844      0.00    -0.13       0.00    -0.06
    12   8.8322      0.00     0.10       0.00    -0.07
    13   8.8324      0.00     0.01       0.00    -0.03
    14   8.8325      0.00    -0.15       0.00    -0.03

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.

06HC123    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.350    36.350    36.350
ecceobj         0.141     0.141     0.141
incobj         12.639    12.639    12.639
qmin           30.729    30.720    30.751
qmax           42.546    42.599    42.624
amean          36.477    36.477    36.477
amin           36.111    36.112    36.112
amax           36.877    36.886    36.890
emean           0.137     0.137     0.136
emin            0.112     0.112     0.112
emax            0.157     0.157     0.157
imean           8.958     8.963     8.816
imin            7.056     7.064     6.942
imax           11.795    11.795    11.795
excite_mean     0.208     0.208     0.206
fracstop        1.000     1.000     1.000
cjmean          2.980     2.980     2.981

libcent 0       179.2     180.6     178.9
libamp  0        75.7      77.0      75.4
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       176.9     177.4     176.9
kozaiamp        180.0     180.0     180.0