Orbit Fit and Astrometric record for 06SF415

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: 06SF415   
# Created Tue Oct 17 01:37:39 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   1.95y
# First observation: 2006/09/18
#  Last observation: 2008/08/31
Preliminary a, adot, b, bdot, g, gdot:
  -0.000020   0.025458   0.000004   0.001728   0.025417   0.000000
# Chi-squared of fit:    11.10 DOF:   26 RMS:  0.15
# Min/Max residuals:    -0.38    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.594789E-05  2.538924E-02  1.383459E-06  1.716519E-03  2.515179E-02 -1.410685E-03
# Covariance matrix:
  4.8809E-13 -7.0762E-13  8.0630E-15 -3.0508E-14 -2.9259E-13 -8.7530E-12
 -7.0762E-13  1.9809E-12 -2.2237E-14  1.1976E-13  1.5833E-12  3.3979E-11
  8.0630E-15 -2.2237E-14  3.4798E-13 -2.3963E-13 -2.1193E-15 -3.8630E-13
 -3.0508E-14  1.1976E-13 -2.3963E-13  2.3052E-13  1.2001E-13  2.3434E-12
 -2.9259E-13  1.5833E-12 -2.1193E-15  1.2001E-13  2.5177E-12  3.3236E-11
 -8.7530E-12  3.3979E-11 -3.8630E-13  2.3434E-12  3.3236E-11  6.6293E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.638503  -15.193033   -0.186745    0.266969   -0.953340  2453996.920044
# Heliocentric elements and errors
Epoch:              2453990.5000  =  2006/09/12
Mean Anomaly:          321.46840 +/-     0.457
Argument of Peri:      120.77226 +/-     0.563
Long of Asc Node:      269.04699 +/-     0.004
Inclination:            15.70630 +/-     0.000
Eccentricity:         0.07463678 +/-    0.0008
Semi-Major Axis:     43.12855731 +/-    0.0123
Time of Perihelion: 2465063.3754 +/-     131.2
Perihelion:          39.90958048 +/-    0.0362
Aphelion:            46.34753413 +/-    0.0369
Period (y)              283.2407 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.95024056 +/-    0.0023
Ecliptic Y          -10.11617271 +/-    0.0006
Ecliptic Z           10.71767427 +/-    0.0007
Ecliptic XDOT         0.00053770 +/-    0.0000
Ecliptic YDOT         0.00271433 +/-    0.0000
Ecliptic ZDOT         0.00013849 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.71150022 +/-    0.0022
Geocenter to KBO     39.75860521 +/-    0.0025
# Hcoef:  7.94

The following table shows the complete astrometric record for 06SF415. 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 (06SF415) followed by the observatory code and reference code for the source of the astrometry.

2006 09  18.41929  22 39 53.12   +08 26 57.8   24.0r 06SF415   568  C~1Q3U      
2006 09  18.45237  22 39 52.97   +08 26 56.7   23.9r 06SF415   568  C~1Q3U      
2006 09  18.48747  22 39 52.82   +08 26 55.5   23.7r 06SF415   568  C~1Q3U      
2007 09  14.27362  22 45 29.89   +09 08 24.3   23.7r 06SF415   568  C~1Q3U      
2007 09  14.27626  22 45 29.88   +09 08 23.8   23.8r 06SF415   568  C~1Q3U      
2007 09  14.30445  22 45 29.74   +09 08 23.4   23.8r 06SF415   568  C~1Q3U      
2007 09  14.30709  22 45 29.74   +09 08 23.2   23.8r 06SF415   568  C~1Q3U      
2007 09  14.32851  22 45 29.62   +09 08 22.3   23.6r 06SF415   568  C~1Q3U      
2007 09  14.33116  22 45 29.63   +09 08 22.2   23.5r 06SF415   568  C~1Q3U      
2007 11  08.11890  22 42 30.49   +08 37 58.8   24.9r 06SF415   695  C~1Q3U      
2007 11  08.18279  22 42 30.41   +08 37 57.1   24.3r 06SF415   695  C~1Q3U      
2007 11  09.14603  22 42 29.17   +08 37 28.4   24.2r 06SF415   695  C~1Q3U      
2008 08  30.33389  22 51 55.37   +09 53 53.1   23.5r 06SF415   568  C~1Q3U      
2008 08  30.36464  22 51 55.22   +09 53 52.4   23.6r 06SF415   568  C~1Q3U      
2008 08  30.39566  22 51 55.08   +09 53 51.7   23.6r 06SF415   568  C~1Q3U      
2008 08  31.31616  22 51 50.79   +09 53 28.8         06SF415   568  C~1Q3U      

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    -0.06
  2   0.0001     -2.48    -0.03      -0.15    -0.10
  3   0.0002     -4.99     0.05      -0.39    -0.22
  4   0.9880   5566.52     0.10     364.61     0.23
  5   0.9880   5566.19    -0.03     364.21    -0.17
  6   0.9880   5564.12     0.01     364.63     0.30
  7   0.9881   5564.05     0.14     364.45     0.12
  8   0.9881   5562.06    -0.24     364.30     0.00
  9   0.9881   5562.16     0.05     364.15    -0.14
 10   1.1381   2408.29    -0.08    -294.72     0.08
 11   1.1383   2406.54     0.13    -295.83     0.22
 12   1.1409   2378.49    -0.13    -315.19     0.24
 13   1.9491  11891.02     0.04     705.20    -0.07
 14   1.9492  11888.70    -0.01     705.40    -0.01
 15   1.9493  11886.51     0.11     705.54    -0.01
 16   1.9518  11818.95    -0.11     708.47    -0.38

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.

06SF415    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.456    43.494    43.420
ecceobj         0.082     0.084     0.080
incobj         15.722    15.722    15.722
qmin           39.224    39.139    39.220
qmax           47.578    47.736    47.402
amean          43.264    43.300    43.227
amin           42.928    42.962    42.887
amax           43.623    43.657    43.583
emean           0.078     0.080     0.075
emin            0.065     0.068     0.063
emax            0.091     0.093     0.088
imean          17.420    17.418    17.421
imin           16.939    16.934    16.937
imax           17.837    17.835    17.837
excite_mean     0.309     0.310     0.309
fracstop        1.000     1.000     1.000
cjmean          2.976     2.976     2.976

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       180.0     180.0     180.0
kozaiamp        180.0     180.0     180.0