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 Wed Oct 18 01:37:39 2017
# Orbit generated from Bernstein formalism
# Fitting   12 observations of   12
# Arc:  10.09y
# First observation: 2006/04/26
#  Last observation: 2016/05/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000050   0.026167  -0.000001   0.002112   0.025923   0.000000
# Chi-squared of fit:    25.83 DOF:   18 RMS:  0.26
# Min/Max residuals:    -0.93    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.608401E-05  2.678825E-02  6.252956E-08  2.153071E-03  2.663191E-02  4.427236E-03
# Covariance matrix:
  4.8899E-13  5.8629E-14  2.6491E-14  4.6083E-15  5.2550E-13  3.0815E-13
  5.8629E-14  1.3939E-12  5.3509E-15  1.1381E-13  8.3641E-13  5.4166E-12
  2.6491E-14  5.3509E-15  1.6605E-13 -1.8546E-14  4.2320E-14  2.1348E-14
  4.6083E-15  1.1381E-13 -1.8546E-14  1.8807E-14  6.6131E-14  4.4525E-13
  5.2550E-13  8.3641E-13  4.2320E-14  6.6131E-14  1.2197E-12  3.2799E-12
  3.0815E-13  5.4166E-12  2.1348E-14  4.4525E-13  3.2799E-12  2.1192E-11
#      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:           71.51182 +/-     0.030
Argument of Peri:      320.27446 +/-     0.034
Long of Asc Node:      171.56633 +/-     0.001
Inclination:             7.19894 +/-     0.000
Eccentricity:         0.16172667 +/-    0.0002
Semi-Major Axis:     39.58409877 +/-    0.0054
Time of Perihelion: 2435780.6343 +/-       6.7
Perihelion:          33.18229444 +/-    0.0080
Aphelion:            45.98590310 +/-    0.0091
Period (y)              249.0516 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.69681284 +/-    0.0012
Ecliptic Y          -25.46434707 +/-    0.0010
Ecliptic Z            3.71325156 +/-    0.0002
Ecliptic XDOT         0.00151560 +/-    0.0000
Ecliptic YDOT        -0.00234758 +/-    0.0000
Ecliptic ZDOT         0.00026524 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.54514594 +/-    0.0011
Geocenter to KBO     37.54893553 +/-    0.0016
# Hcoef:  7.41

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      
2007 07  12.00372  14 45 22.949  -09 58 33.15  23.4R 06HT122   304              
2007 07  12.08828  14 45 22.822  -09 58 33.21        06HT122   304              
2016 05  29.35065  15 40 33.097  -12 43 31.41  23.5R 06HT122   G37              
2016 05  29.40397  15 40 32.811  -12 43 30.70        06HT122   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    -0.04       0.00     0.25
  2   0.0002     -6.60     0.06      -0.20    -0.12
  3   0.0051   -145.61    -0.08       3.79    -0.07
  4   0.1500  -3775.56    -0.05     -97.82     0.36
  5   0.1502  -3780.21    -0.14     -98.36     0.36
  6   0.3198  -4003.95     0.01    -535.14    -0.40
  7   0.3225  -3960.83     0.20    -542.78    -0.93
  8   0.3253  -3916.39     0.12    -548.73     0.21
  9   1.2095    945.37    -0.06     201.09     0.16
 10   1.2097    943.60    -0.02     200.46     0.18
 11  10.0920  51484.90     0.14    4346.87     0.09
 12  10.0922  51480.41    -0.14    4346.47    -0.11

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:3

Type:           3:2E      3:2E      3:2E

axisobj        39.094    39.110    39.078
ecceobj         0.160     0.160     0.160
incobj          7.222     7.222     7.222
qmin           32.390    32.388    32.334
qmax           46.900    46.965    47.040
amean          39.456    39.457    39.457
amin           39.070    39.083    39.055
amax           39.897    39.864    39.927
emean           0.161     0.161     0.161
emin            0.143     0.142     0.142
emax            0.177     0.179     0.179
imean           6.984     6.973     6.995
imin            6.401     6.372     6.430
imax            7.742     7.734     7.754
excite_mean     0.202     0.201     0.202
fracstop        1.000     1.000     1.000
cjmean          3.006     3.006     3.006

libcent 0       179.1     179.4     178.8
libamp  0        60.1      51.3      67.3
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       181.2     178.6     182.2
kozaiamp        180.0     180.0     180.0