Orbit Fit and Astrometric record for 05CE81

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: 05CE81    
# Created Fri Oct  7 01:11:59 2022
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     23 observations of     23
# Arc:  16.01y
# First observation: 2005/02/10
#  Last observation: 2021/02/15
# Chi-squared of fit:    15.38 DOF:     40 RMS:  0.14
# Min/Max residuals:    -0.41    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.670051E-05  2.527179E-02  1.137149E-06  1.186628E-03  2.512961E-02 -3.461156E-04
# Covariance matrix:
  1.8919E-13 -4.9093E-14  2.7607E-15 -1.9279E-15  1.5375E-13 -9.3362E-14
 -4.9093E-14  4.3750E-14 -2.1188E-15  2.0073E-15  3.5495E-14  9.9143E-14
  2.7607E-15 -2.1188E-15  1.1082E-13 -8.5257E-15  1.6769E-15 -4.9287E-15
 -1.9279E-15  2.0073E-15 -8.5257E-15  1.5266E-15  1.6888E-15  4.7027E-15
  1.5375E-13  3.5495E-14  1.6769E-15  1.6888E-15  9.2534E-13  9.2280E-14
 -9.3362E-14  9.9143E-14 -4.9287E-15  4.7027E-15  9.2280E-14  2.3236E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.559010  133.174884   -0.141117    0.026595   -0.972997  2453411.796653
# Heliocentric elements and errors
Epoch:              2453412.5000  =  2005/02/11
Mean Anomaly:          347.44592 +/-     0.032
Argument of Peri:       43.53518 +/-     0.035
Long of Asc Node:      103.82568 +/-     0.001
Inclination:             3.08298 +/-     0.000
Eccentricity:         0.05225612 +/-    0.0001
Semi-Major Axis:     42.95488168 +/-    0.0069
Time of Perihelion: 2456998.4114 +/-      25.7
Perihelion:          40.71022635 +/-    0.0082
Aphelion:            45.19953700 +/-    0.0088
Period (y)              281.5315 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.99156685 +/-    0.0010
Ecliptic Y           29.62238579 +/-    0.0011
Ecliptic Z            1.08268485 +/-    0.0000
Ecliptic XDOT        -0.00197990 +/-    0.0000
Ecliptic YDOT        -0.00192115 +/-    0.0000
Ecliptic ZDOT         0.00012828 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.76992003 +/-    0.0011
Geocenter to KBO     39.79373335 +/-    0.0015
# Hcoef:  7.31

The following table shows the complete astrometric record for 05CE81. 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 (05CE81) followed by the observatory code and reference code for the source of the astrometry.

2005 02  10.29591  09 04 25.90   +18 21 26.0   24.1g 05CE81    568  C~0VDy      
2005 02  10.37891  09 04 25.48   +18 21 27.8   23.9g 05CE81    568  C~0VDy      
2005 02  10.41832  09 04 25.27   +18 21 28.6   24.0g 05CE81    568  C~0VDy      
2005 04  11.28159  09 00 51.32   +18 35 45.4   23.4i 05CE81    568  C~0VDy      
2005 04  11.30756  09 00 51.29   +18 35 45.5   23.7i 05CE81    568  C~0VDy      
2005 04  11.33716  09 00 51.24   +18 35 45.6   24.0i 05CE81    568  C~0VDy      
2006 02  06.31182  09 10 42.99   +17 58 26.7   23.5r 05CE81    568  C~0VDy      
2006 02  06.35103  09 10 42.78   +17 58 27.8         05CE81    568  C~0VDy      
2006 02  06.39104  09 10 42.58   +17 58 28.5   23.0  05CE81    568  C~0VDy      
2007 02  14.45232  09 15 57.09   +17 39 24.8   22.9r 05CE81    568  C~0VDy      
2007 02  14.48985  09 15 56.89   +17 39 25.7   23.0r 05CE81    568  C~0VDy      
2007 02  14.52348  09 15 56.72   +17 39 26.2         05CE81    568  C~0VDy      
2007 02  15.46682  09 15 52.01   +17 39 47.6   23.2r 05CE81    568  C~0VDy      
2007 02  21.35812  09 15 22.98   +17 41 58.5         05CE81    675  C~0VDy      
2007 02  21.41019  09 15 22.72   +17 41 59.7   22.9R 05CE81    675  C~0VDy      
2013 03  13.14385  09 48 42.06   +15 25 13.3   23.3R 05CE81    G37  C~0qSY      
2013 03  13.19463  09 48 41.83   +15 25 14.3         05CE81    G37  C~0qSY      
2020 02  18.239550 10 30 18.222  +12 01 35.73  22.8G 05CE81    G37  C~3iN7      
2020 02  18.329420 10 30 17.769  +12 01 38.61        05CE81    G37  C~3iN7      
2020 02  18.391070 10 30 17.482  +12 01 40.11        05CE81    G37  C~3iN7      
2021 02  15.316390 10 36 02.572  +11 31 07.43  23.0G 05CE81    G37  C~4Yry      
2021 02  15.392770 10 36 02.199  +11 31 09.78        05CE81    G37  C~4Yry      
2021 02  15.466470 10 36 01.850  +11 31 11.83        05CE81    G37  C~4Yry      

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    -0.19       0.00    -0.03
     2   0.0002      0.00    -0.10       0.00    -0.06
     3   0.0003      0.00    -0.21       0.00    -0.13
     4   0.1642      0.00     0.07       0.00     0.03
     5   0.1643      0.00     0.15       0.00     0.04
     6   0.1644      0.00     0.00       0.00     0.03
     7   0.9884      0.00     0.10       0.00    -0.02
     8   0.9885      0.00    -0.01       0.00     0.17
     9   0.9886      0.00     0.09       0.00    -0.05
    10   2.0100      0.00     0.32       0.00     0.05
    11   2.0101      0.00     0.19       0.00     0.10
    12   2.0102      0.00     0.20       0.00    -0.16
    13   2.0128      0.00     0.16       0.00    -0.20
    14   2.0289      0.00    -0.34       0.00     0.05
    15   2.0291      0.00    -0.41       0.00     0.13
    16   8.0845      0.00     0.03       0.00     0.11
    17   8.0846      0.00    -0.12       0.00     0.04
    18  15.0197      0.00     0.18       0.00    -0.17
    19  15.0199      0.00    -0.11       0.00     0.13
    20  15.0201      0.00     0.06       0.00    -0.14
    21  16.0137      0.00     0.06       0.00    -0.05
    22  16.0140      0.00    -0.08       0.00     0.10
    23  16.0142      0.00    -0.06       0.00     0.03

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.

05CE81    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.763    42.763    42.763
ecceobj         0.047     0.047     0.047
incobj          3.082     3.082     3.082
qmin           39.415    39.412    39.419
qmax           46.368    46.363    46.371
amean          42.772    42.772    42.772
amin           42.445    42.444    42.446
amax           43.127    43.129    43.125
emean           0.051     0.051     0.051
emin            0.030     0.031     0.030
emax            0.075     0.075     0.075
imean           1.648     1.648     1.648
imin            0.512     0.512     0.512
imax            2.767     2.767     2.766
excite_mean     0.059     0.059     0.059
fracstop        1.000     1.000     1.000
cjmean          3.083     3.083     3.083

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       186.4     186.3     186.5
kozaiamp        180.0     180.0     180.0