Orbit Fit and Astrometric record for 11CW119

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: 11CW119   
# Created Sat Dec 16 02:37:41 2017
# Orbit generated from Bernstein formalism
# Fitting   12 observations of   13
# Arc:   3.13y
# First observation: 2011/01/30
#  Last observation: 2014/03/20
Preliminary a, adot, b, bdot, g, gdot:
   0.000071   0.036562   0.000025   0.012667   0.030812   0.000000
# Chi-squared of fit:     9.35 DOF:   18 RMS:  0.16
# Min/Max residuals:    -0.42    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.840680E-05  3.670586E-02  5.407496E-06  1.274138E-02  3.067767E-02  2.025703E-03
# Covariance matrix:
  3.3667E-13 -3.1663E-13  1.9757E-14 -7.3055E-14 -4.7866E-14 -2.0106E-12
 -3.1663E-13  1.6590E-12 -1.2941E-13  4.8903E-13  2.2324E-12  1.3574E-11
  1.9757E-14 -1.2941E-13  2.9808E-13 -1.6985E-13 -1.5161E-13 -1.1803E-12
 -7.3055E-14  4.8903E-13 -1.6985E-13  2.5897E-13  5.8626E-13  4.4388E-12
 -4.7866E-14  2.2324E-12 -1.5161E-13  5.8626E-13  5.0424E-12  1.6414E-11
 -2.0106E-12  1.3574E-11 -1.1803E-12  4.4388E-12  1.6414E-11  1.2297E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.743524  142.458157    0.211276   -0.096602   -0.960491  2455591.867826
# Heliocentric elements and errors
Epoch:              2455590.5000  =  2011/01/29
Mean Anomaly:            4.46415 +/-     0.026
Argument of Peri:      333.05102 +/-     0.062
Long of Asc Node:      157.75535 +/-     0.000
Inclination:            19.89078 +/-     0.000
Eccentricity:         0.36716337 +/-    0.0002
Semi-Major Axis:     52.79117981 +/-    0.0215
Time of Perihelion: 2453853.1933 +/-      10.1
Perihelion:          33.40819251 +/-    0.0175
Aphelion:            72.17416711 +/-    0.0314
Period (y)              383.5750 +/-      0.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.34960662 +/-    0.0019
Ecliptic Y           20.51771068 +/-    0.0014
Ecliptic Z           -3.26200896 +/-    0.0002
Ecliptic XDOT        -0.00223004 +/-    0.0000
Ecliptic YDOT        -0.00241240 +/-    0.0000
Ecliptic ZDOT         0.00111332 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.55471537 +/-    0.0017
Geocenter to KBO     32.59700176 +/-    0.0024
# Hcoef:  7.56

The following table shows the complete astrometric record for 11CW119. 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 (11CW119) followed by the observatory code and reference code for the source of the astrometry.

2011 01  30.36706  09 31 42.669  +08 35 20.80  22.7w 11CW119   F51  C~1w3m      
2011 02  02.50724  09 31 25.381  +08 37 03.40  23.2w 11CW119   F51  C~1w3m      
2011 02  02.52241  09 31 25.313  +08 37 03.99  23.3w 11CW119   F51  C~1w3m      
2011 02  02.53833  09 31 25.213  +08 37 04.02  23.3w 11CW119   F51  C~1w3m      
2012 02  14.35247  09 39 20.537  +08 44 44.25  22.6w 11CW119   F51  C~1w3m      
2012 02  14.36670  09 39 20.498  +08 44 44.64  22.6w 11CW119   F51  C~1w3m      
2012 02  14.38088  09 39 20.417  +08 44 45.15  22.9w 11CW119   F51  C~1w3m      
2012 02  14.39507  09 39 20.357  +08 44 45.50  22.9w 11CW119   F51  C~1w3m      
2013 02  21.45461  09 47 35.269  +08 49 43.81  21.4i 11CW119   F51  C~1w3m      
2013 03  04.31210  09 46 37.705  +08 56 27.35  22.6w 11CW119   F51  C~1w3m      
2013 03  04.32634  09 46 37.633  +08 56 27.85  23.0w 11CW119   F51  C~1w3m      
2014 01  25.42074  09 58 56.347  +08 33 01.46  22.6w 11CW119   F51  C~1w3m      
2014 03  20.30310  09 54 17.445  +09 05 23.18  22.7w 11CW119   F51  C~1w3m      

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     0.11       0.00     0.24
  2   0.0086   -275.73    -0.19      15.48     0.02
  3   0.0086   -276.88     0.03      15.72     0.18
  4   0.0087   -278.29     0.04      15.27    -0.34
  5   1.0403   6250.68    -0.42    2716.37    -0.09
  6   1.0404   6250.00     0.20    2716.55    -0.01
  7   1.0404   6248.70     0.18    2716.65    -0.02
  8   1.0405   6247.74 (   0.52)   2716.69 (  -0.07)
  9   2.0618  13103.66     0.11    5400.10     0.16
 10   2.0916  12161.56    -0.02    5500.37    -0.11
 11   2.0916  12160.39     0.02    5500.49    -0.13
 12   2.9871  23047.76    -0.03    7837.04     0.05
 13   3.1347  18453.57    -0.03    8277.93     0.04

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.

11CW119    quality flag:1

Type:        7:3EEEE  SCATNEAR   7:3EEEE
Type:        7:3EEII                    

axisobj        53.106    53.169    53.044
ecceobj         0.370     0.371     0.370
incobj         19.882    19.883    19.882
qmin           32.373    32.416    32.425
qmax           74.444    74.487    74.499
amean          52.968    52.969    52.968
amin           52.394    52.415    52.378
amax           53.711    53.721    53.723
emean           0.328     0.320     0.321
emin            0.180     0.171     0.203
emax            0.387     0.387     0.387
imean          20.854    21.210    21.248
imin           18.044    18.121    18.159
imax           26.539    26.620    25.869
excite_mean     0.489     0.489     0.489
fracstop        1.000     1.000     1.000
cjmean          2.903     2.903     2.902

libcent 0       146.6    -180.0     173.5
libamp  0        70.1    -180.0     118.8
libcent 1       204.8    -180.0    -180.0
libamp  1       105.1    -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       100.6     100.7     102.0
kozaiamp        180.0     180.0     180.0