Orbit Fit and Astrometric record for 06HR122

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: 06HR122   
# Created Sat Oct 21 01:37:38 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:   1.22y
# First observation: 2006/04/26
#  Last observation: 2007/07/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000024   0.029409   0.000000  -0.001728   0.025386   0.000000
# Chi-squared of fit:     5.67 DOF:   16 RMS:  0.13
# Min/Max residuals:    -0.21    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.700139E-05  3.001141E-02 -3.027507E-07 -1.767842E-03  2.590860E-02  2.919779E-03
# Covariance matrix:
  4.9954E-13  9.1003E-13  1.3938E-14 -1.2241E-13  9.5620E-13  5.0545E-11
  9.1003E-13  7.1673E-11  9.4860E-13 -1.0289E-11  3.4089E-11  4.1600E-09
  1.3938E-14  9.4860E-13  2.7390E-13 -3.8138E-13  4.5157E-13  5.5541E-11
 -1.2241E-13 -1.0289E-11 -3.8138E-13  1.9770E-12 -4.8453E-12 -6.0466E-10
  9.5620E-13  3.4089E-11  4.5157E-13 -4.8453E-12  1.7065E-11  1.9609E-09
  5.0545E-11  4.1600E-09  5.5541E-11 -6.0466E-10  1.9609E-09  2.4438E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.865962 -143.711151    0.009569    0.015255   -1.001588  2453851.717004
# Heliocentric elements and errors
Epoch:              2453850.5000  =  2006/04/25
Mean Anomaly:            8.49518 +/-     1.257
Argument of Peri:      145.68227 +/-     3.134
Long of Asc Node:       50.35150 +/-     0.006
Inclination:             3.46625 +/-     0.002
Eccentricity:         0.38005547 +/-    0.0078
Semi-Major Axis:     62.79814945 +/-    0.4350
Time of Perihelion: 2449561.1743 +/-     633.0
Perihelion:          38.93136916 +/-    0.5609
Aphelion:            86.66492975 +/-    0.7760
Period (y)              497.6551 +/-      5.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.92368478 +/-    0.0050
Ecliptic Y          -23.42998640 +/-    0.0036
Ecliptic Z            0.58332021 +/-    0.0001
Ecliptic XDOT         0.00162987 +/-    0.0000
Ecliptic YDOT        -0.00274627 +/-    0.0000
Ecliptic ZDOT        -0.00018216 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.60336065 +/-    0.0045
Geocenter to KBO     38.59722440 +/-    0.0062
# Hcoef:  7.62

The following table shows the complete astrometric record for 06HR122. 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 (06HR122) followed by the observatory code and reference code for the source of the astrometry.

2006 04  26.21625  14 17 02.50   -12 47 56.9   22.6R 06HR122   807  Cr3609      
2006 04  26.30280  14 17 02.05   -12 47 54.5         06HR122   807  Cr3609      
2006 04  27.22204  14 16 57.63   -12 47 32.9         06HR122   807  Cr3609      
2006 06  19.99053  14 13 23.04   -12 30 42.0   23.8R 06HR122   304  Cr4858      
2006 06  20.08400  14 13 22.80   -12 30 41.1         06HR122   304  Cr4858      
2006 07  28.00082  14 12 53.72   -12 29 38.0   23.5R 06HR122   304  Cr5556      
2006 07  28.10749  14 12 53.82   -12 29 38.9         06HR122   304  Cr5556      
2007 07  11.99772  14 19 14.45   -13 07 42.3         06HR122   304  Cy6786      
2007 07  12.08093  14 19 14.38   -13 07 42.2         06HR122   304  Cy6786      
2007 07  14.99305  14 19 12.74   -13 07 39.9         06HR122   304  Cy6786      
2007 07  16.02292  14 19 12.36   -13 07 40.4         06HR122   304  Cy6786      

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     0.27       0.00    -0.16
  2   0.0002     -7.01    -0.20       0.10     0.05
  3   0.0028    -75.17    -0.07      -0.76     0.06
  4   0.1500  -3373.77    -0.00     -84.63    -0.05
  5   0.1502  -3377.38    -0.03     -84.95    -0.14
  6   0.2540  -3800.13     0.00    -166.97     0.20
  7   0.2543  -3798.45     0.03    -167.33     0.09
  8   1.2095   2210.88     0.14    -487.70    -0.10
  9   1.2098   2209.88     0.08    -487.94    -0.14
 10   1.2177   2186.49    -0.21    -493.60     0.18
 11   1.2206   2181.40    -0.01    -495.88     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.

06HR122    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        61.423    63.006    60.484
ecceobj         0.367     0.395     0.348
incobj          3.480     3.483     3.477
qmin           38.202    37.463    38.799
qmax           87.658    91.202    84.657
amean          62.169    63.696    61.156
amin           61.423    62.879    60.484
amax           63.242    64.670    62.053
emean           0.372     0.400     0.354
emin            0.362     0.391     0.345
emax            0.386     0.410     0.364
imean           2.657     2.767     2.751
imin            2.375     2.501     2.534
imax            3.009     3.018     2.957
excite_mean     0.375     0.403     0.357
fracstop        1.000     1.000     1.000
cjmean          3.148     3.135     3.155

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       187.9     181.3     183.8
kozaiamp        180.0     180.0     179.9