Orbit Fit and Astrometric record for 11UW411

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: 11UW411   
# Created Tue Oct 24 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   1.43y
# First observation: 2011/08/29
#  Last observation: 2013/02/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000110   0.024268   0.000004   0.001840   0.024348   0.000000
# Chi-squared of fit:     8.91 DOF:   34 RMS:  0.12
# Min/Max residuals:    -0.28    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.621029E-05  2.412579E-02  1.442391E-06  1.840204E-03  2.439905E-02 -3.353498E-03
# Covariance matrix:
  3.4092E-13  1.0478E-13 -7.0942E-15  4.6431E-14  3.9879E-13  1.8768E-11
  1.0478E-13  7.1058E-13 -1.1840E-14  8.0493E-14  5.7092E-13  3.2848E-11
 -7.0942E-15 -1.1840E-14  1.4994E-13 -1.5412E-13 -1.6060E-14 -9.6610E-13
  4.6431E-14  8.0493E-14 -1.5412E-13  3.1670E-13  1.0675E-13  6.6712E-12
  3.9879E-13  5.7092E-13 -1.6060E-14  1.0675E-13  8.5101E-13  4.3322E-11
  1.8768E-11  3.2848E-11 -9.6610E-13  6.6712E-12  4.3322E-11  2.7327E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.107006   33.595481    0.854661    0.010253   -0.532370  2455802.986416
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          299.63466 +/-     0.071
Argument of Peri:       92.65918 +/-     0.166
Long of Asc Node:       18.45625 +/-     0.004
Inclination:             4.52059 +/-     0.001
Eccentricity:         0.16768274 +/-    0.0022
Semi-Major Axis:     44.14044673 +/-    0.0332
Time of Perihelion: 2473761.8374 +/-       6.1
Perihelion:          36.73885576 +/-    0.1003
Aphelion:            51.54203769 +/-    0.1040
Period (y)              293.2671 +/-      0.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.05263183 +/-    0.0013
Ecliptic Y           22.25792062 +/-    0.0008
Ecliptic Z            0.79190728 +/-    0.0000
Ecliptic XDOT        -0.00181782 +/-    0.0000
Ecliptic YDOT         0.00205001 +/-    0.0000
Ecliptic ZDOT         0.00019924 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.52985848 +/-    0.0012
Geocenter to KBO     40.98520341 +/-    0.0015
# Hcoef:  8.50

The following table shows the complete astrometric record for 11UW411. 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 (11UW411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.48565  02 03 53.744  +13 45 21.00  24.9r 11UW411   568  C~1C6P      
2011 08  29.53760  02 03 53.633  +13 45 20.60  24.6r 11UW411   568  C~1C6P      
2011 08  29.58466  02 03 53.533  +13 45 20.08  24.7r 11UW411   568  C~1C6P      
2011 09  05.52418  02 03 36.475  +13 44 07.62  24.7r 11UW411   568  C~1C6P      
2011 10  24.40337  02 00 18.033  +13 28 03.90        11UW411   568  C~1C6P      
2011 10  24.44610  02 00 17.817  +13 28 03.02  24.8r 11UW411   568  C~1C6P      
2011 10  24.48881  02 00 17.606  +13 28 01.91  24.6r 11UW411   568  C~1C6P      
2011 10  26.42314  02 00 08.300  +13 27 14.42  24.6r 11UW411   568  C~1C6P      
2011 10  28.30027  01 59 59.297  +13 26 28.05        11UW411   568  C~1C6P      
2011 11  24.29629  01 57 57.036  +13 15 47.42  24.8r 11UW411   568  C~1C6P      
2011 11  30.34253  01 57 33.572  +13 13 41.74  24.5r 11UW411   568  C~1C6P      
2012 01  26.26707  01 56 13.076  +13 05 57.76  24.4r 11UW411   568  C~1C6P      
2012 01  27.32416  01 56 14.433  +13 06 04.48        11UW411   568  C~1C6P      
2012 08  17.56010  02 09 26.408  +14 20 35.19  24.4r 11UW411   568  C~1C6P      
2012 08  22.61568  02 09 19.663  +14 20 14.82  24.4r 11UW411   568  C~1C6P      
2012 08  24.51776  02 09 16.537  +14 20 04.02  24.3r 11UW411   568  C~1C6P      
2012 10  17.36532  02 06 05.095  +14 05 25.51  24.2r 11UW411   568  C~1C6P      
2012 10  20.46016  02 05 50.268  +14 04 11.83  24.6r 11UW411   568  C~1C6P      
2013 01  14.35870  02 01 13.872  +13 39 49.04  24.5r 11UW411   568  C~1C6P      
2013 02  03.24708  02 01 33.432  +13 41 15.45  24.3r 11UW411   568  C~1C6P      

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    -0.12       0.00    -0.05
  2   0.0001     -1.66    -0.01       0.18    -0.03
  3   0.0003     -3.20     0.04       0.18    -0.16
  4   0.0193   -261.55    -0.04      16.89     0.02
  5   0.1531  -3310.03     0.12     103.99    -0.04
  6   0.1532  -3313.29     0.09     104.25     0.15
  7   0.1533  -3316.56     0.04     104.27     0.10
  8   0.1586  -3460.41    -0.07     106.48     0.22
  9   0.1638  -3599.72     0.06     108.24     0.10
 10   0.2377  -5496.45    -0.09     124.27    -0.11
 11   0.2542  -5861.65    -0.03     125.28     0.07
 12   0.4101  -7126.59    -0.13      99.18    -0.28
 13   0.4130  -7105.64     0.15      98.57    -0.16
 14   0.9694   5271.66     0.01     351.58     0.00
 15   0.9832   5172.42     0.21     365.30     0.09
 16   0.9885   5125.97    -0.00     370.38     0.17
 17   1.1359   2208.09    -0.20     482.46     0.12
 18   1.1444   1980.14    -0.13     486.29    -0.11
 19   1.3795  -2302.69    -0.07     485.87    -0.04
 20   1.4340  -2005.24     0.18     469.08    -0.07

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.

11UW411    quality flag:1

Type:      CLASSICAL  SCATNEAR    7:4EEE

axisobj        44.235    44.325    44.149
ecceobj         0.167     0.173     0.161
incobj          4.516     4.516     4.516
qmin           36.197    34.587    36.053
qmax           51.907    53.814    51.865
amean          43.846    43.953    43.727
amin           43.432    43.515    43.271
amax           44.301    44.438    44.241
emean           0.151     0.176     0.159
emin            0.127     0.151     0.143
emax            0.172     0.211     0.174
imean           4.535     3.245     3.834
imin            2.797     0.233     2.816
imax            5.999     5.133     4.987
excite_mean     0.171     0.187     0.173
fracstop        1.000     1.000     1.000
cjmean          3.064     3.057     3.062

libcent 0      -180.0    -180.0     179.4
libamp  0      -180.0    -180.0     109.6
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       178.8     176.9     189.1
kozaiamp        180.0     180.0     179.9