Orbit Fit and Astrometric record for 06SH415

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: 06SH415   
# Created Sat Oct 21 01:37:40 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   26
# Arc:   7.05y
# First observation: 2006/09/18
#  Last observation: 2013/10/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000926   0.029334  -0.000338   0.010812   0.026511   0.000000
# WARNING -- MRQMIN stopped after  17 iterations
# Chi-squared of fit:    49.09 DOF:   44 RMS:  0.25
# Min/Max residuals:    -0.77    0.47
# Exact a, adot, b, bdot, g, gdot:
  1.781880E-05  2.829985E-02  5.465230E-06  1.044471E-02  2.685959E-02 -3.234550E-03
# Covariance matrix:
  2.5347E-13 -1.7055E-13  4.2871E-14 -5.1661E-14 -3.6584E-14 -6.3533E-13
 -1.7055E-13  1.8320E-13 -5.1207E-14  6.1802E-14  4.9337E-14  7.5954E-13
  4.2871E-14 -5.1207E-14  1.4484E-13 -4.1321E-14 -1.9760E-14 -2.2277E-13
 -5.1661E-14  6.1802E-14 -4.1321E-14  2.9529E-14  3.1494E-14  2.7108E-13
 -3.6584E-14  4.9337E-14 -1.9760E-14  3.1494E-14  4.7470E-13  3.4706E-13
 -6.3533E-13  7.5954E-13 -2.2277E-13  2.7108E-13  3.4706E-13  3.3200E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.617708  -14.310553   -0.171583    0.267361   -0.956074  2453996.926384
# Heliocentric elements and errors
Epoch:              2453990.5000  =  2006/09/12
Mean Anomaly:          342.20061 +/-     0.011
Argument of Peri:       68.47822 +/-     0.018
Long of Asc Node:      310.34956 +/-     0.000
Inclination:            25.04595 +/-     0.000
Eccentricity:         0.25161383 +/-    0.0001
Semi-Major Axis:     49.63614886 +/-    0.0073
Time of Perihelion: 2460305.8600 +/-       3.6
Perihelion:          37.14700745 +/-    0.0070
Aphelion:            62.12529027 +/-    0.0102
Period (y)              349.7078 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.74504696 +/-    0.0009
Ecliptic Y           -8.94494101 +/-    0.0002
Ecliptic Z           10.02334845 +/-    0.0003
Ecliptic XDOT         0.00013234 +/-    0.0000
Ecliptic YDOT         0.00293975 +/-    0.0000
Ecliptic ZDOT         0.00093653 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.18622613 +/-    0.0008
Geocenter to KBO     37.23064338 +/-    0.0010
# Hcoef:  7.98

The following table shows the complete astrometric record for 06SH415. 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 (06SH415) followed by the observatory code and reference code for the source of the astrometry.

2006 09  18.42563  22 43 05.12   +08 45 39.1   23.5r 06SH415   568  C~1QdF      
2006 09  18.45610  22 43 04.97   +08 45 38.2   23.6r 06SH415   568  C~1QdF      
2006 09  18.49118  22 43 04.80   +08 45 37.5   23.7r 06SH415   568  C~1QdF      
2006 09  20.26311  22 42 56.30   +08 44 45.2   23.4r 06SH415   568  C~1QdF      
2007 09  14.27098  22 48 34.71   +09 58 45.5   23.5r 06SH415   568  C~1QdF      
2007 09  14.30181  22 48 34.53   +09 58 44.8   23.4r 06SH415   568  C~1QdF      
2007 09  14.32586  22 48 34.42   +09 58 44.0   23.3r 06SH415   568  C~1QdF      
2007 09  16.29054  22 48 24.63   +09 57 49.1   23.5R 06SH415   675  C~1QdF      
2007 09  16.35622  22 48 24.29   +09 57 47.4         06SH415   675  C~1QdF      
2007 11  08.17188  22 45 15.04   +09 30 01.7   24.4r 06SH415   695  C~1QdF      
2007 11  09.13680  22 45 13.57   +09 29 34.7   24.2r 06SH415   695  C~1QdF      
2008 08  30.32714  22 54 59.43   +11 15 38.9   23.4r 06SH415   568  C~1QdF      
2008 08  30.35793  22 54 59.27   +11 15 38.4   23.5r 06SH415   568  C~1QdF      
2008 08  30.38894  22 54 59.11   +11 15 37.7   23.5r 06SH415   568  C~1QdF      
2008 08  31.30935  22 54 54.43   +11 15 18.4         06SH415   568  C~1QdF      
2009 09  13.29166  22 59 06.69   +12 21 31.3         06SH415   568  C~1QdF      
2009 09  15.31521  22 58 56.43   +12 20 35.0         06SH415   568  C~1QdF      
2009 09  16.25480  22 58 51.69   +12 20 08.8         06SH415   568  C~1QdF      
2013 07  08.53625  23 25 30.55   +17 06 26.6         06SH415   568  C~1QdF      
2013 07  15.61457  23 25 16.23   +17 09 14.2         06SH415   568  C~1QdF      
2013 07  16.51048  23 25 14.11   +17 09 32.6         06SH415   568  C~1QdF      
2013 08  08.48634  23 23 57.49   +17 13 44.9         06SH415   568  C~1QdF      
2013 09  03.34414  23 21 54.50   +17 10 01.7         06SH415   568  C~1QdF      
2013 09  06.31062  23 21 39.05   +17 09 04.0         06SH415   568  C~1QdF      
2013 10  02.37462  23 19 24.63   +16 56 58.3         06SH415   568  C~1QdF      
2013 10  06.32860  23 19 05.70   +16 54 40.8         06SH415   568  C~1QdF      

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    -0.24       0.00     0.14
  2   0.0001     -2.40    -0.24       0.04     0.13
  3   0.0002     -4.99    -0.09       0.38     0.41
  4   0.0050   -141.43    -0.27       1.37     0.05
  5   0.9879   6200.20     0.46    2149.39     0.06
  6   0.9880   6197.47     0.19    2149.77     0.33
  7   0.9881   6195.66     0.30    2149.66     0.13
  8   0.9935   6040.91     0.13    2154.89     0.27
  9   0.9936   6035.61     0.06    2155.27     0.47
 10   1.1383   2809.10     0.15    1703.63    -0.77
 11   1.1409   2778.56     0.15    1687.20    -0.56
 12   1.9491  13226.75    -0.19    4236.16    -0.20
 13   1.9492  13224.37    -0.16    4236.60    -0.08
 14   1.9492  13221.92    -0.18    4236.85    -0.15
 15   1.9518  13150.61    -0.29    4245.26    -0.37
 16   2.9866  18118.71 (   0.25)   6526.02 (   0.82)
 17   2.9922  17956.95     0.12    6530.56    -0.15
 18   2.9947  17882.15     0.24    6532.49    -0.06
 19   6.8039  46531.60    -0.07   14274.30     0.01
 20   6.8232  46393.05     0.16   14509.13    -0.07
 21   6.8257  46370.13     0.21   14537.69    -0.12
 22   6.8886  45387.48    -0.23   15171.14     0.20
 23   6.9594  43578.31     0.13   15583.19     0.29
 24   6.9675  43340.26    -0.15   15606.62     0.04
 25   7.0389  41188.27    -0.23   15598.71     0.19
 26   7.0497  40872.35     0.06   15564.25    -0.20

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.

06SH415    quality flag:2

Type:       SCATEXTD  SCATNEAR  SCATNEAR

axisobj        50.184    50.205    50.162
ecceobj         0.260     0.261     0.260
incobj         25.041    25.041    25.041
qmin           36.469    36.465    36.427
qmax           63.718    63.869    63.688
amean          49.833    49.863    49.813
amin           49.389    49.409    49.345
amax           50.367    50.408    50.364
emean           0.249     0.250     0.249
emin            0.232     0.233     0.231
emax            0.266     0.267     0.266
imean          26.617    26.616    26.610
imin           26.351    26.346    26.318
imax           26.925    26.904    26.955
excite_mean     0.513     0.513     0.512
fracstop        1.000     1.000     1.000
cjmean          2.832     2.832     2.832

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       181.7     182.8     180.2
kozaiamp        180.0     180.0     179.9