Orbit Fit and Astrometric record for 05EC318

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: 05EC318   
# Created Sun Oct 22 01:37:35 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   8.27y
# First observation: 2003/12/21
#  Last observation: 2012/03/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000009   0.021581  -0.000005   0.000694   0.023016   0.000000
# Chi-squared of fit:    45.67 DOF:   28 RMS:  0.29
# Min/Max residuals:    -0.80    0.63
# Exact a, adot, b, bdot, g, gdot:
  1.494821E-05  2.136952E-02  1.882134E-06  6.869018E-04  2.280679E-02  1.117319E-03
# Covariance matrix:
  4.2267E-13 -5.0133E-14  1.3541E-15 -1.8529E-15  2.1012E-13 -2.4851E-13
 -5.0133E-14  3.4920E-13 -1.3376E-14  1.1339E-14  4.0545E-13  1.9584E-12
  1.3541E-15 -1.3376E-14  1.8144E-13 -3.7625E-14 -1.5423E-14 -7.8873E-14
 -1.8529E-15  1.1339E-14 -3.7625E-14  1.4917E-14  1.2414E-14  6.7363E-14
  2.1012E-13  4.0545E-13 -1.5423E-14  1.2414E-14  7.0257E-13  2.2110E-12
 -2.4851E-13  1.9584E-12 -7.8873E-14  6.7363E-14  2.2110E-12  1.1584E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.720231  152.637033    0.879868    0.013077   -0.433560  2452994.935140
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:           97.53190 +/-     0.122
Argument of Peri:      301.04212 +/-     0.111
Long of Asc Node:      109.21416 +/-     0.005
Inclination:             2.53029 +/-     0.000
Eccentricity:         0.03296942 +/-    0.0002
Semi-Major Axis:     44.05575537 +/-    0.0043
Time of Perihelion: 2424053.9617 +/-      35.8
Perihelion:          42.60326279 +/-    0.0080
Aphelion:            45.50824794 +/-    0.0082
Period (y)              292.4234 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.90766311 +/-    0.0014
Ecliptic Y           21.12706046 +/-    0.0008
Ecliptic Z            1.31632504 +/-    0.0001
Ecliptic XDOT        -0.00130022 +/-    0.0000
Ecliptic YDOT        -0.00222411 +/-    0.0000
Ecliptic ZDOT         0.00008660 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.29324603 +/-    0.0013
Geocenter to KBO     43.84659905 +/-    0.0016
# Hcoef:  6.29

The following table shows the complete astrometric record for 05EC318. 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 (05EC318) followed by the observatory code and reference code for the source of the astrometry.

2003 12  21.434397 10 20 55.83   +12 08 21.3   22.9V 05EC318   645  C~2JxC      
2003 12  21.435226 10 20 55.84   +12 08 21.4   22.6V 05EC318   645  C~2JxC      
2003 12  21.437714 10 20 55.83   +12 08 21.3   23.5V 05EC318   645  C~2JxC      
2005 03  11.21948  10 20 49.40   +12 13 23.2   22.4R 05EC318   695  Cn0852      
2005 03  11.27935  10 20 49.14   +12 13 24.6         05EC318   695  Cn0852      
2005 03  12.27645  10 20 44.92   +12 13 48.2         05EC318   695  Cn0852      
2005 06  08.96178  10 18 36.83   +12 23 22.6   22.5R 05EC318   304  Cn7066      
2005 06  09.01921  10 18 36.95   +12 23 21.6         05EC318   304  Cn7066      
2006 03  02.37189  10 26 15.87   +11 44 49.5   22.3R 05EC318   695  Cr3594      
2006 03  02.42405  10 26 15.65   +11 44 50.9         05EC318   695  Cr3594      
2006 04  26.03429  10 23 11.31   +12 01 29.3   21.7R 05EC318   807  Cr3594      
2006 04  26.11970  10 23 11.14   +12 01 29.9         05EC318   807  Cr3594      
2006 04  27.05742  10 23 09.59   +12 01 37.1         05EC318   807  Cr3594      
2008 04  05.17697  10 33 28.57   +11 07 26.5   22.8R 05EC318   688  Cy5742      
2008 04  05.23843  10 33 28.41   +11 07 27.7         05EC318   688  Cy5742      
2012 03  29.23271  10 52 33.29   +09 22 36.7   22.7R 05EC318   688  C~0fDi      
2012 03  29.28269  10 52 33.13   +09 22 36.6         05EC318   688  C~0fDi      

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    -0.03       0.00    -0.29
  2   0.0000      0.10     0.09       0.15    -0.15
  3   0.0000      0.00     0.06       0.00    -0.30
  4   1.2205   -196.99    -0.02     247.44    -0.21
  5   1.2207   -201.05    -0.04     247.37    -0.24
  6   1.2234   -267.26    -0.27     247.03    -0.19
  7   1.4662  -2225.40     0.25     106.56     0.17
  8   1.4664  -2223.40     0.39     106.26     0.00
  9   2.1956   4889.45    -0.11     392.66     0.07
 10   2.1957   4885.93     0.05     392.78     0.21
 11   2.3452   2001.50    -0.12     335.99     0.28
 12   2.3455   1998.96    -0.34     335.64     0.13
 13   2.3480   1975.16    -0.18     334.09     0.30
 14   4.2895  11641.31    -0.13     654.21     0.28
 15   4.2897  11638.67     0.44     654.45     0.63
 16   8.2705  29854.62    -0.48    1238.17     0.13
 17   8.2706  29852.43     0.46    1237.15    -0.80

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.

05EC318    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.686    43.698    43.674
ecceobj         0.038     0.038     0.038
incobj          2.532     2.532     2.532
qmin           41.009    41.051    40.980
qmax           46.786    46.786    46.795
amean          43.797    43.810    43.785
amin           43.459    43.473    43.440
amax           44.146    44.159    44.133
emean           0.044     0.043     0.045
emin            0.026     0.027     0.027
emax            0.060     0.060     0.061
imean           1.304     1.298     1.309
imin            0.472     0.474     0.471
imax            1.953     1.946     1.957
excite_mean     0.050     0.049     0.051
fracstop        1.000     1.000     1.000
cjmean          3.096     3.096     3.096

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       176.4     176.5     177.1
kozaiamp        180.0     179.9     179.9