Orbit Fit and Astrometric record for 06HT122

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: 06HT122   
# Created Fri Oct 19 01:08:46 2018
# Orbit generated from Bernstein formalism
# Fitting    8 observations of    8
# Arc: 118.80d
# First observation: 2006/04/26
#  Last observation: 2006/08/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000003   0.030402  -0.000015   0.002624   0.027078   0.000000
# Chi-squared of fit:    13.00 DOF:   10 RMS:  0.23
# Min/Max residuals:    -0.57    0.59
# Exact a, adot, b, bdot, g, gdot:
  1.588485E-05  2.693480E-02  2.052902E-07  2.166517E-03  2.663624E-02 -2.357421E-03
# Covariance matrix:
  5.0974E-13 -3.4323E-12  1.3688E-14 -3.0200E-13  7.4639E-13  2.2334E-10
 -3.4323E-12  3.5051E-09 -1.5400E-11  4.7884E-10  7.0937E-11 -1.6958E-07
  1.3688E-14 -1.5400E-11  4.9203E-13 -3.6329E-12 -2.6382E-13  7.5528E-10
 -3.0200E-13  4.7884E-10 -3.6329E-12  7.5459E-11  9.3469E-12 -2.3294E-08
  7.4639E-13  7.0937E-11 -2.6382E-13  9.3469E-12  8.7070E-12 -2.2330E-09
  2.2334E-10 -1.6958E-07  7.5528E-10 -2.3294E-08 -2.2330E-09  8.4287E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.675307 -138.260271    0.104377    0.098640   -0.991407  2453851.734594
# Heliocentric elements and errors
Epoch:              2453850.5000  =  2006/04/25
Mean Anomaly:          286.01380 +/-     5.750
Argument of Peri:      134.68300 +/-     4.583
Long of Asc Node:      171.38086 +/-     0.061
Inclination:             7.17968 +/-     0.006
Eccentricity:         0.09087032 +/-    0.1082
Semi-Major Axis:     39.21323726 +/-    0.9191
Time of Perihelion: 2472283.4865 +/-    1277.5
Perihelion:          35.64991797 +/-    4.3233
Aphelion:            42.77655656 +/-    4.3587
Period (y)              245.5598 +/-      8.63
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.69228709 +/-    0.0031
Ecliptic Y          -25.46029899 +/-    0.0027
Ecliptic Z            3.71265352 +/-    0.0004
Ecliptic XDOT         0.00204330 +/-    0.0002
Ecliptic YDOT        -0.00189635 +/-    0.0002
Ecliptic ZDOT         0.00019761 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.53904461 +/-    0.0029
Geocenter to KBO     37.54283415 +/-    0.0042
# Hcoef:  7.16

The following table shows the complete astrometric record for 06HT122. 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 (06HT122) followed by the observatory code and reference code for the source of the astrometry.

2006 04  26.23384  14 44 17.83   -09 57 00.4   22.4R 06HT122   807  Cr3609      
2006 04  26.31833  14 44 17.40   -09 56 58.6         06HT122   807  Cr3609      
2006 04  28.09587  14 44 08.51   -09 56 12.9         06HT122   807  Cr3609      
2006 06  20.01100  14 40 12.41   -09 39 30.5   23.5R 06HT122   304  Cr4858      
2006 06  20.10534  14 40 12.10   -09 39 29.6         06HT122   304  Cr4858      
2006 08  21.03029  14 39 48.70   -09 45 17.5   22.3R 06HT122   807  Cs2782      
2006 08  22.02907  14 39 51.32   -09 45 37.9         06HT122   807  Cs2782      
2006 08  23.03145  14 39 54.06   -09 45 57.1         06HT122   807  Cs2782      

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     0.02       0.00     0.22
  2   0.0002     -6.60     0.11      -0.20    -0.15
  3   0.0051   -145.61    -0.14       3.79    -0.12
  4   0.1500  -3775.56     0.04     -97.82     0.04
  5   0.1502  -3780.21    -0.04     -98.36     0.05
  6   0.3198  -4003.95     0.01    -535.14    -0.06
  7   0.3225  -3960.83     0.09    -542.78    -0.57
  8   0.3253  -3916.39    -0.10    -548.73     0.59

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.

06HT122    quality flag:1

Type:      CLASSICAL  CENTAURR CLASSICAL

axisobj        38.740    46.520    38.268
ecceobj         0.091     0.407     0.012
incobj          7.204     7.190     7.203
qmin           34.148    27.566    36.486
qmax           44.343    65.547    40.767
amean          39.056    46.578    38.534
amin           38.715    46.520    38.245
amax           39.471    46.636    38.826
emean           0.100     0.406     0.024
emin            0.078     0.406     0.000
emax            0.125     0.407     0.051
imean           5.614     6.637     5.202
imin            3.989     6.629     3.111
imax            6.988     6.645     6.894
excite_mean     0.141     0.423     0.095
fracstop        1.000     0.000     1.000
cjmean          3.027     2.908     3.034

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       180.4     139.1     177.0
kozaiamp        180.0       0.3     180.0