Orbit Fit and Astrometric record for 13CE223

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: 13CE223   
# Created Tue Oct 23 01:09:14 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:   9.97y
# First observation: 2004/03/17
#  Last observation: 2014/03/06
# Chi-squared of fit:    21.29 DOF:   54 RMS:  0.15
# Min/Max residuals:    -0.34    0.47
# Exact a, adot, b, bdot, g, gdot:
  2.302372E-05  6.801454E-02 -2.413367E-06 -5.068112E-03  4.902412E-02  7.709574E-03
# Covariance matrix:
  1.5205E-13 -4.6575E-14 -3.3257E-16  2.3591E-15 -5.0963E-14 -4.7366E-14
 -4.6575E-14  1.0373E-13  2.3867E-15 -7.5874E-15  7.7061E-15  1.4153E-13
 -3.3257E-16  2.3867E-15  1.2954E-13 -1.4235E-14 -1.5459E-15  3.2599E-15
  2.3591E-15 -7.5874E-15 -1.4235E-14  2.8795E-15 -2.8141E-16 -1.0576E-14
 -5.0963E-14  7.7061E-15 -1.5459E-15 -2.8141E-16  1.9412E-13  1.8669E-14
 -4.7366E-14  1.4153E-13  3.2599E-15 -1.0576E-14  1.8669E-14  1.9782E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.140119  119.619954   -0.835486   -0.029177   -0.532806  2453081.750531
# Heliocentric elements and errors
Epoch:              2453082.5000  =  2004/03/18
Mean Anomaly:           65.25019 +/-     0.008
Argument of Peri:      133.62707 +/-     0.010
Long of Asc Node:      265.69601 +/-     0.000
Inclination:             5.16480 +/-     0.000
Eccentricity:         0.15653849 +/-    0.0000
Semi-Major Axis:     21.90486903 +/-    0.0009
Time of Perihelion: 2446295.3307 +/-       0.9
Perihelion:          18.47591398 +/-    0.0008
Aphelion:            25.33382409 +/-    0.0010
Period (y)              102.5225 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -11.06068916 +/-    0.0001
Ecliptic Y           17.75897471 +/-    0.0002
Ecliptic Z           -1.11739863 +/-    0.0000
Ecliptic XDOT        -0.00351033 +/-    0.0000
Ecliptic YDOT        -0.00152388 +/-    0.0000
Ecliptic ZDOT        -0.00030606 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   20.95151003 +/-    0.0001
Geocenter to KBO     20.39811830 +/-    0.0002
# Hcoef:  8.76

The following table shows the complete astrometric record for 13CE223. 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 (13CE223) followed by the observatory code and reference code for the source of the astrometry.

2004 03  17.249788 08 04 23.32   +17 09 31.4   22.2V 13CE223   645  C~1w3t      
2004 03  17.250617 08 04 23.32   +17 09 31.4   21.8V 13CE223   645  C~1w3t      
2004 03  17.253105 08 04 23.31   +17 09 31.4   23.2V 13CE223   645  C~1w3t      
2004 04  13.161491 08 03 46.94   +17 14 02.1         13CE223   645  C~2aHl      
2004 04  13.162320 08 03 46.94   +17 14 02.1         13CE223   645  C~2aHl      
2004 04  13.164808 08 03 46.94   +17 14 02.1         13CE223   645  C~2aHl      
2004 04  16.141796 08 03 51.59   +17 14 07.3         13CE223   645  C~2aHl      
2004 04  16.142626 08 03 51.59   +17 14 07.2         13CE223   645  C~2aHl      
2004 04  16.145113 08 03 51.59   +17 14 07.3         13CE223   645  C~2aHl      
2004 12  20.444780 08 31 39.89   +15 23 18.9   21.7V 13CE223   645  C~2aHl      
2004 12  20.445609 08 31 39.90   +15 23 18.8   21.5V 13CE223   645  C~2aHl      
2004 12  20.448097 08 31 39.87   +15 23 18.9   22.4V 13CE223   645  C~2aHl      
2012 02  13.44662  10 01 08.921  +06 57 02.67  22.2r 13CE223   F51  C~1w3t      
2012 02  20.50285  10 00 09.706  +07 02 12.30  21.8g 13CE223   F51  C~1w3t      
2012 06  08.28852  09 55 13.073  +07 44 25.80  22.2w 13CE223   F51  C~1w3t      
2013 02  10.47704  10 13 57.156  +05 37 35.71  22.1g 13CE223   F51  C~1w3t      
2013 02  10.50319  10 13 56.928  +05 37 36.59  22.2r 13CE223   F51  C~1w3t      
2013 02  10.51588  10 13 56.837  +05 37 37.25  22.1r 13CE223   F51  C~1w3t      
2013 03  04.31674  10 10 58.160  +05 54 01.68  22.1w 13CE223   F51  C~1w3t      
2013 03  04.33098  10 10 58.023  +05 54 02.41  22.3w 13CE223   F51  C~1w3t      
2013 03  04.34522  10 10 57.912  +05 54 03.07  22.7w 13CE223   F51  C~1w3t      
2014 01  11.61170  10 29 34.384  +04 04 24.30  21.8r 13CE223   F51  C~1w3t      
2014 02  10.45439  10 26 12.865  +04 19 51.62  21.5i 13CE223   F51  C~1w3t      
2014 02  10.46681  10 26 12.776  +04 19 52.20  21.6i 13CE223   F51  C~1w3t      
2014 02  26.46535  10 24 03.505  +04 31 42.64  22.4w 13CE223   F51  C~1w3t      
2014 02  26.47695  10 24 03.403  +04 31 43.25  22.3w 13CE223   F51  C~1w3t      
2014 02  26.48851  10 24 03.317  +04 31 43.73  22.2w 13CE223   F51  C~1w3t      
2014 02  26.50007  10 24 03.226  +04 31 44.23  22.3w 13CE223   F51  C~1w3t      
2014 03  06.35862  10 22 59.850  +04 37 57.32  21.7i 13CE223   F51  C~1w3t      
2014 03  06.37041  10 22 59.779  +04 37 58.17  21.6i 13CE223   F51  C~1w3t      

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     0.20
  2   0.0000      0.00    -0.14       0.00     0.19
  3   0.0000      0.00    -0.14       0.00     0.15
  4   0.0737      0.00     0.03       0.00    -0.05
  5   0.0737      0.00     0.02       0.00    -0.05
  6   0.0737      0.00    -0.02       0.00    -0.05
  7   0.0818      0.00     0.16       0.00    -0.12
  8   0.0818      0.00     0.14       0.00    -0.22
  9   0.0818      0.00     0.07       0.00    -0.12
 10   0.7617      0.00    -0.09       0.00     0.10
 11   0.7617      0.00     0.15       0.00    -0.01
 12   0.7617      0.00    -0.03       0.00     0.05
 13   7.9102      0.00     0.13       0.00     0.23
 14   7.9295      0.00    -0.13       0.00    -0.25
 15   8.2273      0.00     0.02       0.00    -0.34
 16   8.9041      0.00     0.05       0.00     0.17
 17   8.9042      0.00    -0.12       0.00    -0.05
 18   8.9042      0.00     0.09       0.00     0.08
 19   8.9639      0.00     0.08       0.00    -0.12
 20   8.9639      0.00    -0.24       0.00    -0.06
 21   8.9640      0.00    -0.16       0.00    -0.07
 22   9.8217      0.00     0.04       0.00    -0.31
 23   9.9034      0.00     0.01       0.00    -0.09
 24   9.9034      0.00     0.18       0.00    -0.02
 25   9.9472      0.00    -0.07       0.00     0.01
 26   9.9472      0.00    -0.16       0.00     0.08
 27   9.9473      0.00    -0.01       0.00     0.02
 28   9.9473      0.00     0.06       0.00    -0.02
 29   9.9688      0.00    -0.10       0.00     0.18
 30   9.9688      0.00     0.27       0.00     0.47

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.

13CE223    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.886    21.886    21.886
ecceobj         0.160     0.160     0.160
incobj          5.162     5.162     5.162
qmin           17.242    17.442    17.191
qmax           25.434    25.385    25.384
amean          20.841    20.838    21.142
amin           20.010    20.523    20.593
amax           21.886    21.886    21.886
emean           0.147     0.146     0.161
emin            0.128     0.132     0.133
emax            0.166     0.160     0.186
imean           4.814     5.417     5.126
imin            3.573     4.244     3.822
imax            6.823     6.823     6.823
excite_mean     0.171     0.175     0.185
fracstop        0.004     0.005     0.006
cjmean          3.086     3.085     3.072

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       174.3     177.2     154.7
kozaiamp         63.9      52.4      45.9