Orbit Fit and Astrometric record for 05EW318

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: 05EW318   
# Created Sun Oct 22 01:37:35 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   24
# Arc:  10.24y
# First observation: 2002/12/14
#  Last observation: 2013/03/12
Preliminary a, adot, b, bdot, g, gdot:
   0.000140   0.019109  -0.000008   0.000322   0.021976   0.000000
# Chi-squared of fit:    42.99 DOF:   42 RMS:  0.24
# Min/Max residuals:    -0.64    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.326437E-05  1.875236E-02  4.517287E-07  3.171397E-04  2.125465E-02  9.673475E-04
# Covariance matrix:
  2.8097E-13  8.3427E-15 -6.4702E-16  1.9704E-16  2.0340E-13  7.9310E-14
  8.3427E-15  2.8454E-13 -6.8947E-15  4.5139E-15  4.6921E-13  1.3987E-12
 -6.4702E-16 -6.8947E-15  1.2842E-13 -2.4585E-14 -1.1562E-14 -3.5081E-14
  1.9704E-16  4.5139E-15 -2.4585E-14  8.9172E-15  7.3448E-15  2.3100E-14
  2.0340E-13  4.6921E-13 -1.1562E-14  7.3448E-15  9.4484E-13  2.2940E-12
  7.9310E-14  1.3987E-12 -3.5081E-14  2.3100E-14  2.2940E-12  7.1472E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.418553  152.732469    0.923919    0.002364   -0.325870  2452622.984513
# Heliocentric elements and errors
Epoch:              2452620.5000  =  2002/12/12
Mean Anomaly:          147.68202 +/-     0.081
Argument of Peri:      231.53172 +/-     0.079
Long of Asc Node:      128.58466 +/-     0.007
Inclination:             1.06238 +/-     0.000
Eccentricity:         0.06661571 +/-    0.0001
Semi-Major Axis:     44.81151392 +/-    0.0051
Time of Perihelion: 2407672.7482 +/-      23.3
Perihelion:          41.82636306 +/-    0.0072
Aphelion:            47.79666479 +/-    0.0077
Period (y)              299.9802 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -41.68713367 +/-    0.0019
Ecliptic Y           22.52936375 +/-    0.0010
Ecliptic Z            0.34372268 +/-    0.0000
Ecliptic XDOT        -0.00122439 +/-    0.0000
Ecliptic YDOT        -0.00209400 +/-    0.0000
Ecliptic ZDOT         0.00004197 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.38678602 +/-    0.0017
Geocenter to KBO     47.04852498 +/-    0.0022
# Hcoef:  6.33

The following table shows the complete astrometric record for 05EW318. 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 (05EW318) followed by the observatory code and reference code for the source of the astrometry.

2002 12  14.483770 10 19 22.63   +10 53 26.8         05EW318   645  C~1GH2      
2002 12  14.484599 10 19 22.63   +10 53 26.8         05EW318   645  C~1GH2      
2002 12  14.487087 10 19 22.62   +10 53 26.8         05EW318   645  C~1GH2      
2003 01  28.294752 10 17 29.26   +11 04 38.1   22.8V 05EW318   645  C~2JxC      
2003 01  28.295581 10 17 29.26   +11 04 38.1   22.2V 05EW318   645  C~2JxC      
2003 01  28.298069 10 17 29.25   +11 04 38.1   23.8V 05EW318   645  C~2JxC      
2005 03  08.23878  10 23 08.64   +10 34 55.9   22.7R 05EW318   675  Cn3361      
2005 03  08.28082  10 23 08.45   +10 34 57.1   23.1R 05EW318   675  Cn3361      
2005 03  09.21648  10 23 04.66   +10 35 18.8   22.9R 05EW318   675  Cn3361      
2005 03  09.25802  10 23 04.50   +10 35 19.7   22.9R 05EW318   675  Cn3361      
2005 03  10.21478  10 23 00.65   +10 35 42.0   22.9R 05EW318   675  Cn3361      
2005 03  10.25626  10 23 00.52   +10 35 42.9   24.1R 05EW318   675  Cn3361      
2005 06  08.96747  10 20 46.15   +10 48 03.5   22.7R 05EW318   304  Cn7066      
2005 06  09.03300  10 20 46.28   +10 48 02.6         05EW318   304  Cn7066      
2006 03  02.37572  10 27 42.89   +10 09 42.7   22.4R 05EW318   695  Cr3594      
2006 03  02.42785  10 27 42.66   +10 09 44.0         05EW318   695  Cr3594      
2006 03  02.48023  10 27 42.45   +10 09 44.9         05EW318   695  Cr3594      
2006 04  27.05357  10 24 46.44   +10 26 34.0   21.8R 05EW318   807  Cr3594      
2006 04  28.03607  10 24 44.90   +10 26 42.2         05EW318   807  Cr3594      
2006 04  28.10994  10 24 44.79   +10 26 42.9         05EW318   807  Cr3594      
2006 06  21.96015  10 25 17.28   +10 23 11.0   22.9R 05EW318   304  Cr4849      
2006 06  21.97752  10 25 17.32   +10 23 10.6         05EW318   304  Cr4849      
2013 03  12.16888  10 55 38.52   +07 30 22.6   22.5R 05EW318   695  C~0udE      
2013 03  12.23003  10 55 38.23   +07 30 23.2         05EW318   695  C~0udE      

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     0.14       0.00    -0.04
  2   0.0000      0.00     0.16       0.00    -0.04
  3   0.0000     -0.14     0.06      -0.05    -0.10
  4   0.1227  -1799.16     0.04      26.60     0.08
  5   0.1227  -1799.16     0.09      26.60     0.08
  6   0.1227  -1799.30     0.11      26.55     0.03
  7   2.2307   3507.47    -0.10     168.31    -0.32
  8   2.2308   3504.43    -0.41     168.41    -0.21
  9   2.2334   3444.46    -0.52     168.35    -0.31
 10   2.2335   3441.94    -0.36     168.33    -0.32
 11   2.2361   3380.93    -0.49     168.52    -0.16
 12   2.2362   3378.82     0.07     168.66    -0.00
 13   2.4846   1264.24    -0.18     142.13     0.18
 14   2.4847   1266.35     0.07     141.99     0.09
 15   3.2139   7830.58     0.12     234.70     0.19
 16   3.2141   7826.94    -0.04     234.66     0.17
 17   3.2142   7823.72     0.22     234.37    -0.11
 18   3.3664   5034.28     0.13     225.11     0.32
 19   3.3691   5010.13     0.10     224.47     0.06
 20   3.3693   5008.36     0.17     224.53     0.18
 21   3.5194   5532.28     0.35     201.81     0.31
 22   3.5195   5532.97     0.32     201.65     0.16
 23  10.2414  34756.57     0.08     702.20     0.45
 24  10.2416  34752.24    -0.11     701.08    -0.64

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.

05EW318    quality flag:2

Type:      CLASSICAL CLASSICAL   9:5EEEE

axisobj        44.466    44.481    44.452
ecceobj         0.075     0.074     0.075
incobj          1.063     1.063     1.063
qmin           40.321    40.465    40.731
qmax           49.033    48.968    48.636
amean          44.552    44.595    44.554
amin           44.178    44.234    44.196
amax           44.945    44.974    44.932
emean           0.075     0.073     0.071
emin            0.054     0.058     0.060
emax            0.092     0.089     0.083
imean           1.184     1.251     1.222
imin            0.458     0.631     0.589
imax            1.793     1.770     1.735
excite_mean     0.078     0.077     0.074
fracstop        1.000     1.000     1.000
cjmean          3.101     3.102     3.102

libcent 0      -180.0    -180.0     179.4
libamp  0      -180.0    -180.0     133.4
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       187.2     190.4     178.4
kozaiamp        180.0     179.9     180.0