Orbit Fit and Astrometric record for 06WF206

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: 06WF206   
# Created Wed Dec 13 02:37:29 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   21
# Arc:   6.30y
# First observation: 2006/11/23
#  Last observation: 2013/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000194   0.021534   0.000002   0.000271   0.022694   0.000000
# Chi-squared of fit:    14.96 DOF:   34 RMS:  0.15
# Min/Max residuals:    -0.32    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.606382E-05  2.125389E-02 -5.156026E-07  2.651168E-04  2.274811E-02 -5.209115E-04
# Covariance matrix:
  2.3544E-13 -8.6543E-14 -6.7320E-16 -1.8501E-15  1.5079E-13 -8.8326E-13
 -8.6543E-14  1.9348E-13 -1.7524E-15  3.2619E-15  5.3157E-14  1.7577E-12
 -6.7320E-16 -1.7524E-15  1.1084E-13 -2.8254E-14 -2.5713E-15 -1.4323E-14
 -1.8501E-15  3.2619E-15 -2.8254E-14  2.0697E-14 -2.0200E-16  3.5242E-14
  1.5079E-13  5.3157E-14 -2.5713E-15 -2.0200E-16  2.8756E-13  7.3903E-14
 -8.8326E-13  1.7577E-12 -1.4323E-14  3.5242E-14  7.3903E-14  1.8676E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.929973  127.764831    0.912129    0.013274   -0.390323  2454063.001234
# Heliocentric elements and errors
Epoch:              2454060.5000  =  2006/11/21
Mean Anomaly:          250.50023 +/-     0.088
Argument of Peri:      183.30204 +/-     0.082
Long of Asc Node:       58.20970 +/-     0.010
Inclination:             2.05718 +/-     0.000
Eccentricity:         0.05127974 +/-    0.0002
Semi-Major Axis:     43.51422124 +/-    0.0038
Time of Perihelion: 2485950.6046 +/-      25.2
Perihelion:          41.28282325 +/-    0.0094
Aphelion:            45.74561922 +/-    0.0095
Period (y)              287.0483 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.42784167 +/-    0.0006
Ecliptic Y           35.59475605 +/-    0.0008
Ecliptic Z            1.48043885 +/-    0.0000
Ecliptic XDOT        -0.00197802 +/-    0.0000
Ecliptic YDOT        -0.00162119 +/-    0.0000
Ecliptic ZDOT         0.00002971 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.35774085 +/-    0.0008
Geocenter to KBO     43.95969620 +/-    0.0010
# Hcoef:  6.89

The following table shows the complete astrometric record for 06WF206. 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 (06WF206) followed by the observatory code and reference code for the source of the astrometry.

2006 11  23.50048  08 42 49.07   +20 11 33.1   23.3i 06WF206   568  C~0VEQ      
2006 11  24.49147  08 42 47.65   +20 11 40.9   22.7i 06WF206   568  C~0VEQ      
2006 11  24.54300  08 42 47.60   +20 11 41.2   23.2i 06WF206   568  C~0VEQ      
2006 11  24.59500  08 42 47.49   +20 11 41.6   22.9i 06WF206   568  C~0VEQ      
2007 01  19.31674  08 39 32.29   +20 25 35.2         06WF206   568  C~0VEQ      
2007 01  19.35945  08 39 32.09   +20 25 36.0   23.2g 06WF206   568  C~0VEQ      
2007 01  19.39213  08 39 31.92   +20 25 36.7   23.3g 06WF206   568  C~0VEQ      
2007 01  20.38005  08 39 27.16   +20 25 54.9         06WF206   568  C~0VEQ      
2007 02  21.32921  08 36 55.92   +20 35 02.5         06WF206   675  C~0VEQ      
2007 02  21.37504  08 36 55.71   +20 35 03.1   21.9R 06WF206   675  C~0VEQ      
2007 05  15.18866  08 35 10.61   +20 38 23.7         06WF206   675  C~0VEQ      
2007 05  15.19322  08 35 10.66   +20 38 23.5         06WF206   675  C~0VEQ      
2007 11  08.41603  08 47 58.74   +19 51 54.6   22.3r 06WF206   695  C~0VEQ      
2007 11  09.40812  08 47 58.85   +19 51 57.0   22.2r 06WF206   695  C~0VEQ      
2009 01  26.47605  08 49 06.31   +19 51 01.7   23.0r 06WF206   568  C~0VER      
2009 01  26.49295  08 49 06.22   +19 51 02.0   22.8r 06WF206   568  C~0VER      
2009 01  26.50972  08 49 06.14   +19 51 02.2   23.3r 06WF206   568  C~0VER      
2009 01  27.40222  08 49 01.83   +19 51 19.6   23.3r 06WF206   568  C~0VER      
2009 01  27.41770  08 49 01.76   +19 51 19.8   23.3r 06WF206   568  C~0VER      
2013 03  13.13655  09 05 59.24   +18 44 23.1   23.3R 06WF206   G37  C~0qSk      
2013 03  13.18520  09 05 59.07   +18 44 23.8         06WF206   G37  C~0qSk      

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     0.14
  2   0.0027    -21.33    -0.09       2.34    -0.15
  3   0.0029    -22.09     0.36       2.45    -0.18
  4   0.0030    -23.69    -0.02       2.44    -0.32
  5   0.1556  -2891.84    -0.19     101.90     0.05
  6   0.1557  -2894.76    -0.08     101.96     0.07
  7   0.1558  -2897.25    -0.24     102.02     0.12
  8   0.1585  -2966.60    -0.22     102.58     0.10
  9   0.2459  -5161.71     0.30      95.31     0.11
 10   0.2461  -5164.72     0.21      95.15     0.01
 11   0.4728  -6644.88     0.05     -78.99     0.07
 12   0.4728  -6644.15 (   0.62)    -79.01 (   0.06)
 13   0.9580   4521.13     0.26      12.13     0.18
 14   0.9607   4521.99     0.15      14.86     0.07
 15   2.1765   5454.31    -0.05     216.53    -0.03
 16   2.1766   5453.00    -0.13     216.48    -0.08
 17   2.1766   5451.86    -0.06     216.36    -0.19
 18   2.1791   5388.57    -0.05     216.79     0.02
 19   2.1791   5387.56     0.06     216.72    -0.05
 20   6.3015  20405.00    -0.04     401.04    -0.00
 21   6.3017  20402.46     0.05     401.00     0.06

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.

06WF206    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.584    43.596    43.573
ecceobj         0.045     0.045     0.045
incobj          2.053     2.053     2.053
qmin           40.908    40.924    40.879
qmax           46.478    46.421    46.403
amean          43.562    43.574    43.551
amin           43.217    43.240    43.214
amax           43.924    43.926    43.899
emean           0.040     0.039     0.040
emin            0.022     0.022     0.023
emax            0.058     0.057     0.058
imean           1.062     1.064     1.060
imin            0.166     0.170     0.158
imax            1.661     1.659     1.663
excite_mean     0.044     0.044     0.044
fracstop        1.000     1.000     1.000
cjmean          3.094     3.094     3.094

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       180.8     181.2     180.5
kozaiamp        180.0     180.0     180.0