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 Fri Dec  3 02:10:30 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     18 observations of     18
# Arc:  12.96y
# First observation: 2006/09/18
#  Last observation: 2019/09/04
# Chi-squared of fit:    20.38 DOF:     30 RMS:  0.19
# Min/Max residuals:    -0.42    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.507479E-05  2.539284E-02  1.126077E-06  1.716978E-03  2.515542E-02 -1.338493E-03
# Covariance matrix:
  3.9043E-13 -3.0602E-13  2.1746E-14 -1.9911E-14  1.1019E-13 -7.7491E-13
 -3.0602E-13  3.1597E-13 -2.2509E-14  2.1114E-14 -9.3410E-14  8.2370E-13
  2.1746E-14 -2.2509E-14  1.1568E-13 -1.4500E-14  2.5847E-14 -5.8357E-14
 -1.9911E-14  2.1114E-14 -1.4500E-14  6.4807E-15 -6.6972E-15  5.5914E-14
  1.1019E-13 -9.3410E-14  2.5847E-14 -6.6972E-15  8.2594E-13 -1.9414E-13
 -7.7491E-13  8.2370E-13 -5.8357E-14  5.5914E-14 -1.9414E-13  2.1857E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.638503  -15.193033   -0.186744    0.266969   -0.953340  2453996.920044
# Heliocentric elements and errors
Epoch:              2453996.5000  =  2006/09/18
Mean Anomaly:          322.76481 +/-     0.076
Argument of Peri:      119.16104 +/-     0.089
Long of Asc Node:      269.05278 +/-     0.001
Inclination:            15.70661 +/-     0.000
Eccentricity:         0.07243974 +/-    0.0001
Semi-Major Axis:     43.10117096 +/-    0.0073
Time of Perihelion: 2464686.6320 +/-      32.1
Perihelion:          39.97893330 +/-    0.0077
Aphelion:            46.22340863 +/-    0.0087
Period (y)              282.9709 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.94489301 +/-    0.0013
Ecliptic Y          -10.11475658 +/-    0.0004
Ecliptic Z           10.71611513 +/-    0.0004
Ecliptic XDOT         0.00054501 +/-    0.0000
Ecliptic YDOT         0.00271233 +/-    0.0000
Ecliptic ZDOT         0.00014063 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.70578253 +/-    0.0013
Geocenter to KBO     39.75293330 +/-    0.0014
# Hcoef:  7.82

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      
2019 09  04.374920 23 52 28.560  +16 40 35.23  23.3G 06SF415   G37  C~3cZh      
2019 09  04.474440 23 52 28.085  +16 40 33.33        06SF415   G37  C~3cZh      

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     0.17       0.00     0.06
     2   0.0001      0.00     0.16       0.00     0.01
     3   0.0002      0.00     0.28       0.00    -0.07
     4   0.9880      0.00    -0.19       0.00     0.15
     5   0.9880      0.00    -0.16       0.00    -0.27
     6   0.9880      0.00    -0.30       0.00     0.18
     7   0.9881      0.00    -0.12       0.00     0.06
     8   0.9881      0.00    -0.42       0.00    -0.19
     9   0.9881      0.00    -0.09       0.00    -0.21
    10   1.1381      0.00    -0.08       0.00     0.08
    11   1.1383      0.00     0.06       0.00     0.29
    12   1.1409      0.00    -0.18       0.00     0.22
    13   1.9491      0.00     0.23       0.00    -0.02
    14   1.9492      0.00     0.16       0.00     0.02
    15   1.9493      0.00     0.27       0.00     0.06
    16   1.9518      0.00     0.21       0.00    -0.36
    17  12.9609      0.00     0.10       0.00    -0.02
    18  12.9611      0.00    -0.12       0.00     0.05

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        43.426    43.426    43.426
ecceobj         0.080     0.080     0.080
incobj         15.722    15.722    15.722
qmin           39.234    39.283    39.217
qmax           47.398    47.401    47.440
amean          43.233    43.233    43.233
amin           42.903    42.898    42.898
amax           43.589    43.588    43.589
emean           0.075     0.075     0.075
emin            0.063     0.063     0.063
emax            0.088     0.088     0.089
imean          17.421    17.421    17.421
imin           16.939    16.937    16.940
imax           17.841    17.835    17.845
excite_mean     0.309     0.309     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       180.2     180.0     180.2
kozaiamp        180.0     180.0     180.0