Orbit Fit and Astrometric record for 06HZ122

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: 06HZ122   
# Created Tue Dec 12 02:37:30 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   12
# Arc:   8.17y
# First observation: 2006/04/27
#  Last observation: 2014/06/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000064   0.023958  -0.000213   0.013927   0.025507   0.000000
# Chi-squared of fit:     6.59 DOF:   16 RMS:  0.14
# Min/Max residuals:    -0.23    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.491286E-05  2.319445E-02  8.006736E-06  1.340795E-02  2.542676E-02 -2.996716E-03
# Covariance matrix:
  4.6805E-13  4.3620E-15 -5.2610E-15  8.6671E-15  4.0219E-13  6.7946E-14
  4.3620E-15  8.4359E-13 -1.6816E-13  5.3914E-13  4.4580E-13  4.6118E-12
 -5.2610E-15 -1.6816E-13  2.1579E-13 -1.3507E-13 -8.9163E-14 -9.3462E-13
  8.6671E-15  5.3914E-13 -1.3507E-13  3.6414E-13  2.7476E-13  2.9993E-12
  4.0219E-13  4.4580E-13 -8.9163E-14  2.7476E-13  7.6175E-13  2.3419E-12
  6.7946E-14  4.6118E-12 -9.3462E-13  2.9993E-12  2.3419E-12  2.5658E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.862727 -120.069858    0.393885   -0.029836   -0.920877  2453852.781904
# Heliocentric elements and errors
Epoch:              2453850.5000  =  2006/04/25
Mean Anomaly:          328.84154 +/-     0.035
Argument of Peri:       41.48797 +/-     0.056
Long of Asc Node:      242.51670 +/-     0.000
Inclination:            30.03945 +/-     0.000
Eccentricity:         0.19018015 +/-    0.0001
Semi-Major Axis:     47.37080738 +/-    0.0070
Time of Perihelion: 2464157.6367 +/-      11.3
Perihelion:          38.36182014 +/-    0.0091
Aphelion:            56.37979462 +/-    0.0110
Period (y)              326.0426 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.50094256 +/-    0.0007
Ecliptic Y          -34.62082462 +/-    0.0012
Ecliptic Z           -1.27805930 +/-    0.0000
Ecliptic XDOT         0.00230325 +/-    0.0000
Ecliptic YDOT        -0.00101860 +/-    0.0000
Ecliptic ZDOT         0.00145341 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.25572728 +/-    0.0011
Geocenter to KBO     39.32863682 +/-    0.0013
# Hcoef:  7.57

The following table shows the complete astrometric record for 06HZ122. 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 (06HZ122) followed by the observatory code and reference code for the source of the astrometry.

2006 04  27.28115  15 49 16.74   -21 57 19.1   22.6R 06HZ122   807  Cr3609      
2006 04  28.12384  15 49 12.75   -21 57 01.6         06HZ122   807  Cr3609      
2006 04  28.19093  15 49 12.44   -21 56 59.9         06HZ122   807  Cr3609      
2006 06  20.04613  15 44 48.91   -21 36 21.5   23.5R 06HZ122   304  Cr4858      
2006 06  20.13175  15 44 48.53   -21 36 19.6         06HZ122   304  Cr4858      
2006 08  21.10814  15 42 51.67   -21 19 56.7   22.8R 06HZ122   807  Cs2782      
2006 08  22.10304  15 42 52.79   -21 19 50.1         06HZ122   807  Cs2782      
2006 08  23.10562  15 42 54.00   -21 19 43.5         06HZ122   807  Cs2782      
2007 07  12.17350  15 49 45.229  -21 01 12.64  23.8R 06HZ122   304              
2007 07  12.22219  15 49 45.086  -21 01 11.76        06HZ122   304              
2014 06  28.22971  16 34 26.566  -17 22 29.53  23.8R 06HZ122   G37              
2014 06  28.28731  16 34 26.264  -17 22 28.70        06HZ122   G37              

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     0.07
  2   0.0023    -57.97    -0.06       5.16    -0.23
  3   0.0025    -62.55     0.08       5.89     0.10
  4   0.1472  -3915.72     0.10     412.39    -0.15
  5   0.1474  -3921.31     0.11     413.07    -0.20
  6   0.3171  -5732.02    -0.08    1006.82     0.14
  7   0.3198  -5718.25    -0.03    1016.78     0.32
  8   0.3226  -5703.25 (  -0.34)   1027.01 (   0.71)
  9   1.2071   -333.83    -0.04    3373.69    -0.02
 10   1.2072   -335.98     0.01    3374.12    -0.02
 11   8.1696  35121.93     0.23   23455.16     0.04
 12   8.1698  35117.37    -0.23   23455.30    -0.04

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.

06HZ122    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.807    46.827    46.788
ecceobj         0.184     0.185     0.184
incobj         30.183    30.183    30.183
qmin           37.316    37.271    37.296
qmax           57.361    57.430    57.341
amean          47.131    47.151    47.111
amin           46.739    46.748    46.705
amax           47.592    47.638    47.593
emean           0.190     0.190     0.189
emin            0.173     0.173     0.173
emax            0.206     0.207     0.205
imean          31.245    31.243    31.246
imin           31.049    31.046    31.047
imax           31.477    31.458    31.452
excite_mean     0.552     0.552     0.552
fracstop        1.000     1.000     1.000
cjmean          2.739     2.739     2.739

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       188.1     188.6     187.6
kozaiamp        179.9     179.9     179.9