Orbit Fit and Astrometric record for 434709

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: 434709    
# Created Sat Dec 16 02:36:47 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   28 observations of   28
# Arc:  10.19y
# First observation: 2005/02/04
#  Last observation: 2015/04/15
# Chi-squared of fit:    84.49 DOF:   50 RMS:  0.31
# Min/Max residuals:    -0.62    0.78
# Exact a, adot, b, bdot, g, gdot:
  1.636032E-05  3.078768E-02  7.222262E-06  9.948708E-03  2.893280E-02 -5.525189E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.803391  132.778544   -0.042268    0.013872   -0.981783  2453405.714849
# Heliocentric elements and errors
Epoch:              2453406.5000  =  2005/02/05
Mean Anomaly:          323.98256 +/-     0.000
Argument of Peri:       58.59795 +/-     0.000
Long of Asc Node:      130.43050 +/-     0.000
Inclination:            17.88912 +/-     0.000
Eccentricity:         0.23297888 +/-    0.0000
Semi-Major Axis:     42.47811072 +/-    0.0000
Time of Perihelion: 2463523.6112 +/-       0.0
Perihelion:          32.58160821 +/-    0.0000
Aphelion:            52.37461323 +/-    0.0000
Period (y)              276.8573 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.17422841 +/-    0.0000
Ecliptic Y           26.05773457 +/-    0.0000
Ecliptic Z            0.48486911 +/-    0.0000
Ecliptic XDOT        -0.00177459 +/-    0.0000
Ecliptic YDOT        -0.00237927 +/-    0.0000
Ecliptic ZDOT         0.00093407 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.54773361 +/-    0.0000
Geocenter to KBO     34.56298796 +/-    0.0000
# Hcoef:  7.79

The following table shows the complete astrometric record for 434709. 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 (434709) followed by the observatory code and reference code for the source of the astrometry.

2005 02  04.214106 09 01 55.63   +17 44 45.6   22.4V 434709    645  C~1S6u      
2005 02  04.214935 09 01 55.62   +17 44 45.6   22.0V 434709    645  C~1S6u      
2005 02  04.217423 09 01 55.61   +17 44 45.7   24.0V 434709    645  C~1S6u      
2005 02  10.29754  09 01 21.10   +17 47 46.3   23.9g 434709    568  C~0WzS      
2005 02  10.38053  09 01 20.62   +17 47 49.2   23.7g 434709    568  C~0WzS      
2005 02  10.41998  09 01 20.40   +17 47 50.1   23.4g 434709    568  C~0WzS      
2005 04  11.28159  08 57 27.46   +18 08 53.5   23.4i 434709    568  C~0WzS      
2005 04  11.30756  08 57 27.42   +18 08 53.6   23.5i 434709    568  C~0WzS      
2005 04  11.33716  08 57 27.39   +18 08 53.8   23.3i 434709    568  C~0WzS      
2006 02  03.46124  09 09 51.58   +17 46 24.9   22.2r 434709    568  C~0D42      
2006 02  06.31183  09 09 35.31   +17 47 53.0   22.5r 434709    568  C~0D42      
2006 02  06.35104  09 09 35.09   +17 47 54.1   23.1r 434709    568  C~0D42      
2006 02  06.39104  09 09 34.86   +17 47 55.3   22.9r 434709    568  C~0D42      
2006 11  23.49146  09 22 13.36   +17 17 25.7         434709    695  C~0WzS      
2006 11  24.49089  09 22 12.99   +17 17 36.7         434709    695  C~0WzS      
2007 02  14.48107  09 16 45.32   +17 53 06.9   22.8r 434709    568  C~0WzS      
2007 02  14.51467  09 16 45.13   +17 53 08.0   22.7r 434709    568  C~0WzS      
2007 02  14.54775  09 16 44.93   +17 53 08.9         434709    568  C~0WzS      
2007 02  15.49201  09 16 39.59   +17 53 37.7   22.9r 434709    568  C~0WzS      
2010 03  19.14502  09 38 05.97   +18 05 45.6         434709    675  C~0WzS      
2010 03  20.13767  09 38 01.68   +18 06 08.1         434709    675  C~0WzS      
2010 03  20.16850  09 38 01.54   +18 06 08.8         434709    675  C~0WzS      
2015 03  23.13538  10 19 32.56   +17 37 36.1   22.3R 434709    695  C~1Q3P      
2015 03  23.19935  10 19 32.25   +17 37 37.9         434709    695  C~1Q3P      
2015 03  23.26284  10 19 31.94   +17 37 39.5         434709    695  C~1Q3P      
2015 04  15.18266  10 18 01.46   +17 44 58.6   22.1R 434709    695  C~1RHb      
2015 04  15.25488  10 18 01.25   +17 44 59.5         434709    695  C~1RHb      
2015 04  15.33374  10 18 01.01   +17 45 00.4         434709    695  C~1RHb      

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    -0.13       0.00     0.48
  2   0.0000      0.00    -0.03       0.00    -0.43
  3   0.0000      0.00     0.04       0.00    -0.40
  4   0.0167      0.00     0.25       0.00    -0.31
  5   0.0169      0.00     0.18       0.00     0.13
  6   0.0170      0.00     0.28       0.00    -0.13
  7   0.1809      0.00     0.22       0.00     0.78
  8   0.1810      0.00     0.13       0.00     0.65
  9   0.1810      0.00     0.27       0.00     0.58
 10   0.9973      0.00    -0.35       0.00    -0.48
 11   1.0051      0.00    -0.30       0.00    -0.46
 12   1.0052      0.00    -0.19       0.00    -0.58
 13   1.0053      0.00    -0.15       0.00    -0.62
 14   1.7995      0.00     0.25       0.00     0.37
 15   1.8023      0.00     0.28       0.00     0.52
 16   2.0267      0.00     0.02       0.00     0.10
 17   2.0268      0.00     0.07       0.00     0.17
 18   2.0269      0.00    -0.09       0.00     0.06
 19   2.0295      0.00    -0.40       0.00    -0.26
 20   5.1169      0.00     0.09       0.00     0.48
 21   5.1196      0.00     0.33       0.00     0.18
 22   5.1197      0.00     0.26       0.00     0.18
 23  10.1271      0.00     0.02       0.00    -0.13
 24  10.1273      0.00     0.07       0.00    -0.01
 25  10.1274      0.00     0.09       0.00    -0.06
 26  10.1902      0.00    -0.13       0.00    -0.15
 27  10.1904      0.00     0.03       0.00    -0.10
 28  10.1906      0.00     0.01       0.00    -0.10

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.

434709    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.199    42.199    42.200
ecceobj         0.226     0.226     0.226
incobj         17.922    17.922    17.922
qmin           31.146    31.149    30.761
qmax           54.010    54.008    54.543
amean          42.326    42.326    42.326
amin           41.886    41.887    41.885
amax           42.839    42.839    42.852
emean           0.232     0.232     0.245
emin            0.196     0.196     0.196
emax            0.263     0.263     0.273
imean          16.649    16.671    15.944
imin           15.579    15.583    14.962
imax           17.873    17.926    17.861
excite_mean     0.369     0.369     0.369
fracstop        1.000     1.000     1.000
cjmean          2.920     2.920     2.921

libcent 0       178.1     178.5     177.6
libamp  0        76.5      76.2      74.7
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       227.2     227.1     256.6
kozaiamp        180.0     180.0     180.0