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 24 01:38:12 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   21
# Arc:   9.97y
# First observation: 2004/03/17
#  Last observation: 2014/03/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.003157   0.072135   0.000257  -0.005480   0.067324   0.000000
# Chi-squared of fit:    12.33 DOF:   32 RMS:  0.14
# Min/Max residuals:    -0.32    0.30
# Exact a, adot, b, bdot, g, gdot:
  2.211209E-05  6.801518E-02 -1.741018E-06 -5.068202E-03  4.902586E-02  7.711977E-03
# Covariance matrix:
  4.8938E-13 -9.7802E-14 -1.3022E-15  3.5980E-15 -3.6669E-14 -6.8149E-14
 -9.7802E-14  1.4581E-13  3.5922E-15 -1.0485E-14  1.5265E-14  1.9322E-13
 -1.3022E-15  3.5922E-15  4.7231E-13 -5.0615E-14  2.8473E-15  5.1639E-15
  3.5980E-15 -1.0485E-14 -5.0615E-14  6.9725E-15 -2.1769E-15 -1.4591E-14
 -3.6669E-14  1.5265E-14  2.8473E-15 -2.1769E-15  9.5383E-13  9.5941E-14
 -6.8149E-14  1.9322E-13  5.1639E-15 -1.4591E-14  9.5941E-14  2.7326E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.140119  119.619954   -0.835486   -0.029177   -0.532806  2453081.750531
# Heliocentric elements and errors
Epoch:              2453080.5000  =  2004/03/16
Mean Anomaly:           65.26156 +/-     0.016
Argument of Peri:      133.59217 +/-     0.022
Long of Asc Node:      265.69673 +/-     0.001
Inclination:             5.16482 +/-     0.000
Eccentricity:         0.15654839 +/-    0.0000
Semi-Major Axis:     21.90221619 +/-    0.0018
Time of Perihelion: 2446293.3805 +/-       1.4
Perihelion:          18.47345952 +/-    0.0016
Aphelion:            25.33097285 +/-    0.0022
Period (y)              102.5039 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -11.06031542 +/-    0.0002
Ecliptic Y           17.75835499 +/-    0.0004
Ecliptic Z           -1.11734521 +/-    0.0000
Ecliptic XDOT        -0.00351030 +/-    0.0000
Ecliptic YDOT        -0.00152373 +/-    0.0000
Ecliptic ZDOT        -0.00030606 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   20.95085224 +/-    0.0003
Geocenter to KBO     20.39739849 +/-    0.0004
# Hcoef:  8.80

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      
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    -0.04       0.00     0.02
  2   0.0000      0.00     0.01       0.00     0.02
  3   0.0000     -0.14     0.02      -0.03    -0.02
  4   7.9102 120019.96     0.05   -8937.13     0.30
  5   7.9295 118771.68    -0.03   -8901.10    -0.32
  6   8.2273 112213.95 (   0.52)  -7644.64 (  -0.41)
  7   8.9041 137228.17    -0.03  -10226.91     0.23
  8   8.9042 137223.11    -0.17  -10227.14    -0.09
  9   8.9042 137220.94     0.06  -10226.88     0.14
 10   8.9639 133154.77     0.30  -10068.19    -0.10
 11   8.9639 133151.69    -0.15  -10068.10    -0.14
 12   8.9640 133149.16    -0.05  -10067.94    -0.13
 13   9.8217 160144.37    -0.05  -11550.42    -0.32
 14   9.9034 155147.97     0.01  -11592.18    -0.06
 15   9.9034 155145.70     0.21  -11591.99     0.08
 16   9.9472 151941.67    -0.04  -11478.63     0.02
 17   9.9472 151939.13    -0.20  -11478.48     0.07
 18   9.9473 151937.02     0.04  -11478.39     0.05
 19   9.9473 151934.78     0.17  -11478.31     0.03
 20   9.9688 150368.86    -0.11  -11393.27     0.21
 21   9.9688 150366.89 (   0.28) -11392.67 (   0.69)

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        21.883    21.889    21.877
ecceobj         0.160     0.160     0.160
incobj          5.162     5.162     5.162
qmin           17.533    18.242    17.886
qmax           27.018    25.390    26.250
amean          21.275    21.563    21.560
amin           20.735    21.251    21.124
amax           22.410    21.889    22.409
emean           0.157     0.150     0.153
emin            0.136     0.142     0.145
emax            0.206     0.160     0.171
imean           5.292     6.762     6.135
imin            4.538     6.653     5.726
imax            6.794     6.848     6.798
excite_mean     0.182     0.191     0.187
fracstop        0.006     0.000     0.005
cjmean          3.070     3.058     3.061

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       179.4     129.1     188.0
kozaiamp         46.0       3.3      53.3