Orbit Fit and Astrometric record for 06HX122

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: 06HX122   
# Created Tue Dec 23 02:37:40 2014
# Orbit generated from Bernstein formalism
# Fitting   10 observations of   11
# Arc:   1.22y
# First observation: 2006/04/27
#  Last observation: 2007/07/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000042   0.016914  -0.000001   0.003731   0.019404   0.000000
# Chi-squared of fit:     4.69 DOF:   14 RMS:  0.12
# Min/Max residuals:    -0.21    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.373209E-05  1.715597E-02  3.628822E-06  3.780628E-03  1.974831E-02  8.078256E-03
# Covariance matrix:
  4.8780E-13  1.5243E-13 -2.4188E-14  1.9119E-13  6.3856E-13  4.0046E-11
  1.5243E-13  2.7522E-12 -1.5399E-13  1.5802E-12  2.4620E-12  3.2927E-10
 -2.4188E-14 -1.5399E-13  2.8309E-13 -4.0091E-13 -1.7154E-13 -2.5478E-11
  1.9119E-13  1.5802E-12 -4.0091E-13  1.9500E-12  1.6996E-12  2.7346E-10
  6.3856E-13  2.4620E-12 -1.7154E-13  1.6996E-12  3.0112E-12  3.5437E-10
  4.0046E-11  3.2927E-10 -2.5478E-11  2.7346E-10  3.5437E-10  5.6937E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.718798 -125.356456    0.307522   -0.061741   -0.951664  2453852.769434
# Heliocentric elements and errors
Epoch:              2453850.5000  =  2006/04/25
Mean Anomaly:           34.11799 +/-     0.949
Argument of Peri:      258.76556 +/-     0.147
Long of Asc Node:      250.56002 +/-     0.003
Inclination:            12.83342 +/-     0.003
Eccentricity:         0.47538072 +/-    0.0140
Semi-Major Axis:     69.65040992 +/-    1.2036
Time of Perihelion: 2433728.7890 +/-     202.6
Perihelion:          36.53994789 +/-    1.1640
Aphelion:           102.76087194 +/-    2.0272
Period (y)              581.2912 +/-     15.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.04572446 +/-    0.0026
Ecliptic Y          -41.81430063 +/-    0.0036
Ecliptic Z           -3.28413122 +/-    0.0003
Ecliptic XDOT         0.00127722 +/-    0.0000
Ecliptic YDOT        -0.00232122 +/-    0.0000
Ecliptic ZDOT         0.00045037 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   51.59425175 +/-    0.0033
Geocenter to KBO     50.63724961 +/-    0.0044
# Hcoef:  5.87

The following table shows the complete astrometric record for 06HX122. 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 (06HX122) followed by the observatory code and reference code for the source of the astrometry.

2006 04  27.26868  15 25 13.18   -22 32 04.0   22.0R 06HX122   807  Cr3609      
2006 04  27.34068  15 25 12.89   -22 32 02.5         06HX122   807  Cr3609      
2006 04  28.24437  15 25 09.36   -22 31 49.5         06HX122   807  Cr3609      
2006 06  20.02220  15 21 44.37   -22 17 00.7   23.0R 06HX122   304  Cr4858      
2006 06  20.11619  15 21 44.06   -22 16 59.1         06HX122   304  Cr4858      
2006 08  21.06094  15 20 32.76   -22 06 25.7   23.1R 06HX122   807  Cs2782      
2006 08  22.05630  15 20 34.01   -22 06 23.5         06HX122   807  Cs2782      
2006 08  23.05962  15 20 35.30   -22 06 22.5         06HX122   807  Cs2782      
2007 06  16.01531  15 26 18.80   -22 20 32.1         06HX122   304  Cz0452      
2007 06  16.08909  15 26 18.55   -22 20 30.7         06HX122   304  Cz0452      
2007 07  16.07986  15 25 00.08   -22 13 19.9         06HX122   568  Cz0452      

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     0.00       0.00    -0.12
  2   0.0002     -4.26    -0.15       0.45     0.28
  3   0.0027    -54.87     0.16       0.85     0.02
  4   0.1472  -3030.02     0.04     144.42    -0.13
  5   0.1474  -3034.59    -0.04     144.87    -0.08
  6   0.3170  -4154.26    -0.07     504.01     0.21
  7   0.3197  -4138.03 (   0.21)    510.60 (   0.53)
  8   0.3225  -4120.95     0.07     516.16    -0.21
  9   1.1355    709.48    -0.03     896.16    -0.08
 10   1.1357    705.77     0.01     896.65     0.14
 11   1.2178   -456.29     0.02    1043.28    -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.

06HX122    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        68.249    68.250    68.248
ecceobj         0.469     0.469     0.469
incobj         12.900    12.900    12.900
qmin           35.247    35.261    35.272
qmax          104.832   104.647   104.624
amean          69.052    69.046    69.045
amin           68.084    68.077    68.078
amax           70.449    70.410    70.444
emean           0.471     0.471     0.471
emin            0.455     0.455     0.456
emax            0.490     0.488     0.489
imean          14.327    14.329    14.321
imin           13.028    13.035    13.038
imax           15.603    15.593    15.557
excite_mean     0.532     0.532     0.532
fracstop        1.000     1.000     1.000
cjmean          3.024     3.024     3.024

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       192.4     190.0     189.7
kozaiamp        180.0     180.0     179.9