Orbit Fit and Astrometric record for 05CG81

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: 05CG81    
# Created Mon Dec 18 02:37:23 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   26
# Arc:   8.09y
# First observation: 2005/02/10
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000732   0.021374  -0.000367   0.010534   0.022372   0.000000
# Chi-squared of fit:    35.47 DOF:   44 RMS:  0.21
# Min/Max residuals:    -0.42    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.615710E-05  2.065048E-02  7.473472E-06  1.013537E-02  2.291067E-02 -3.923572E-03
# Covariance matrix:
  1.5664E-13 -8.7942E-14  2.7886E-14 -3.7867E-14  6.4036E-14 -4.4094E-13
 -8.7942E-14  1.0243E-13 -3.5909E-14  4.9496E-14 -1.5622E-14  5.7477E-13
  2.7886E-14 -3.5909E-14  1.0736E-13 -3.7075E-14  1.0625E-14 -2.2214E-13
 -3.7867E-14  4.9496E-14 -3.7075E-14  3.5480E-14 -1.1850E-14  3.0568E-13
  6.4036E-14 -1.5622E-14  1.0625E-14 -1.1850E-14  2.5917E-13 -1.4351E-13
 -4.4094E-13  5.7477E-13 -2.2214E-13  3.0568E-13 -1.4351E-13  3.5508E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.209064  136.974197   -0.076540    0.020804   -0.980337  2453411.809733
# Heliocentric elements and errors
Epoch:              2453410.5000  =  2005/02/09
Mean Anomaly:          326.51687 +/-     0.014
Argument of Peri:       56.19414 +/-     0.024
Long of Asc Node:      134.66239 +/-     0.000
Inclination:            26.10693 +/-     0.000
Eccentricity:         0.24276380 +/-    0.0001
Semi-Major Axis:     54.27396694 +/-    0.0063
Time of Perihelion: 2466993.9280 +/-       5.0
Perihelion:          41.09821223 +/-    0.0061
Aphelion:            67.44972164 +/-    0.0087
Period (y)              399.8486 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.67530355 +/-    0.0007
Ecliptic Y           30.38805560 +/-    0.0007
Ecliptic Z            0.92131193 +/-    0.0000
Ecliptic XDOT        -0.00132262 +/-    0.0000
Ecliptic YDOT        -0.00214852 +/-    0.0000
Ecliptic ZDOT         0.00120109 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.63135894 +/-    0.0007
Geocenter to KBO     43.64778444 +/-    0.0010
# Hcoef:  6.36

The following table shows the complete astrometric record for 05CG81. 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 (05CG81) followed by the observatory code and reference code for the source of the astrometry.

2005 02  10.30899  09 19 13.69   +16 54 02.4   23.2g 05CG81    568  C~0X5e      
2005 02  10.39196  09 19 13.31   +16 54 04.6   23.0g 05CG81    568  C~0X5e      
2005 02  10.43152  09 19 13.12   +16 54 05.7   23.2g 05CG81    568  C~0X5e      
2005 02  15.33214  09 18 50.93   +16 56 15.7   22.5g 05CG81    568  C~0X5e      
2005 03  12.193753 09 17 08.10   +17 06 15.7   22.1V 05CG81    645  C~1GLS      
2005 03  12.194582 09 17 08.10   +17 06 15.7   21.8V 05CG81    645  C~1GLS      
2005 03  12.197070 09 17 08.09   +17 06 15.8   22.7V 05CG81    645  C~1GLS      
2005 04  11.30482  09 15 49.71   +17 14 27.5   22.7i 05CG81    568  C~0X5e      
2005 04  11.33442  09 15 49.67   +17 14 27.8   22.6i 05CG81    568  C~0X5e      
2005 04  11.35928  09 15 49.64   +17 14 28.0   22.7i 05CG81    568  C~0X5e      
2006 02  06.32376  09 25 02.26   +17 03 28.0   22.7r 05CG81    568  C~0X5e      
2006 02  06.36445  09 25 02.07   +17 03 29.3   22.4r 05CG81    568  C~0X5e      
2006 02  06.40320  09 25 01.89   +17 03 30.3   22.6r 05CG81    568  C~0X5e      
2006 11  23.49693  09 34 11.06   +16 46 43.1         05CG81    695  C~0X5e      
2006 11  24.49911  09 34 10.93   +16 46 53.0         05CG81    695  C~0X5e      
2007 02  14.46068  09 29 58.12   +17 18 00.3   22.7r 05CG81    568  C~0X5e      
2007 02  14.49837  09 29 57.94   +17 18 01.3   22.8r 05CG81    568  C~0X5e      
2007 02  14.53158  09 29 57.79   +17 18 02.2   22.6r 05CG81    568  C~0X5e      
2007 02  15.47535  09 29 53.51   +17 18 28.3         05CG81    568  C~0X5e      
2007 02  21.36263  09 29 26.88   +17 21 07.1   22.4R 05CG81    675  C~0X5e      
2007 02  21.41444  09 29 26.64   +17 21 08.5   22.4R 05CG81    675  C~0X5e      
2007 05  15.17425  09 26 34.26   +17 39 21.9   22.2r 05CG81    695  C~0X5e      
2007 05  17.20725  09 26 36.98   +17 39 14.2   22.3r 05CG81    695  C~0X5e      
2013 03  13.24147  10 02 10.34   +18 25 42.5   22.2R 05CG81    695  C~0udE      
2013 03  14.19789  10 02 06.41   +18 26 05.3         05CG81    695  C~0udE      
2013 03  14.34815  10 02 05.80   +18 26 08.9         05CG81    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    -0.39       0.00    -0.10
  2   0.0002     -5.86    -0.32       0.44    -0.11
  3   0.0003     -8.80    -0.42       0.66    -0.10
  4   0.0138   -351.68     0.01      27.81    -0.05
  5   0.0818  -1939.01     0.04     153.69    -0.27
  6   0.0818  -1939.01     0.09     153.69    -0.28
  7   0.0818  -1939.18     0.07     153.74    -0.24
  8   0.1643  -3158.51     0.22     285.09     0.07
  9   0.1643  -3159.14     0.30     285.21     0.08
 10   0.1644  -3159.61     0.43     285.27     0.05
 11   0.9884   4585.46     0.18    2076.00     0.45
 12   0.9885   4582.47 (   0.11)   2076.39 (   0.61)
 13   0.9886   4579.70     0.14    2076.54     0.54
 14   1.7829  12389.73     0.21    3618.96    -0.07
 15   1.7856  12384.77     0.12    3627.74    -0.07
 16   2.0100   8341.83    -0.05    4238.00     0.16
 17   2.0101   8339.06    -0.11    4238.13     0.11
 18   2.0102   8336.73    -0.05    4238.31     0.12
 19   2.0128   8270.21     0.22    4243.61     0.36
 20   2.0289   7857.52    -0.08    4273.36    -0.05
 21   2.0290   7853.81    -0.16    4273.60    -0.04
 22   2.2556   5165.82    -0.21    4534.77    -0.33
 23   2.2612   5205.19    -0.30    4539.64    -0.12
 24   8.0847  33296.07    -0.02   17552.09    -0.01
 25   8.0873  33233.91    -0.05   17552.99    -0.11
 26   8.0877  33224.24     0.13   17553.19     0.00

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.

05CG81    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        53.821    53.839    53.803
ecceobj         0.235     0.235     0.235
incobj         26.169    26.169    26.169
qmin           40.238    40.245    40.276
qmax           68.335    68.357    68.075
amean          53.959    53.975    53.909
amin           53.414    53.450    53.408
amax           54.606    54.602    54.490
emean           0.236     0.237     0.235
emin            0.219     0.225     0.220
emax            0.252     0.252     0.250
imean          24.824    24.795    24.832
imin           24.495    24.488    24.525
imax           25.295    25.102    25.254
excite_mean     0.482     0.482     0.481
fracstop        1.000     1.000     1.000
cjmean          2.920     2.920     2.920

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     165.6     172.7
kozaiamp        179.9     180.0     179.9