Orbit Fit and Astrometric record for 11UL411

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: 11UL411   
# Created Tue Dec 12 02:37:45 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   1.43y
# First observation: 2011/08/29
#  Last observation: 2013/02/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000178   0.027070   0.000004   0.000128   0.025792   0.000000
# Chi-squared of fit:     5.81 DOF:   26 RMS:  0.11
# Min/Max residuals:    -0.14    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.560779E-05  2.692960E-02 -7.017204E-08  1.268481E-04  2.590357E-02  5.191651E-04
# Covariance matrix:
  6.4612E-13  3.2212E-13 -5.7748E-15  8.5931E-15  8.1585E-13  3.5622E-11
  3.2212E-13  1.0699E-12 -6.8365E-15  1.0888E-14  1.0299E-12  5.2759E-11
 -5.7748E-15 -6.8365E-15  2.1309E-13 -2.0366E-13 -1.0803E-14 -4.5697E-13
  8.5931E-15  1.0888E-14 -2.0366E-13  3.4084E-13  1.6387E-14  7.5467E-13
  8.1585E-13  1.0299E-12 -1.0803E-14  1.6387E-14  1.5541E-12  7.1252E-11
  3.5622E-11  5.2759E-11 -4.5697E-13  7.5467E-13  7.1252E-11  3.9243E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.978849   30.657996    0.826038    0.019853   -0.575518  2455803.007416
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          358.74676 +/-     1.562
Argument of Peri:       82.36567 +/-     1.835
Long of Asc Node:      308.54805 +/-     0.036
Inclination:             1.97401 +/-     0.000
Eccentricity:         0.07816754 +/-    0.0001
Semi-Major Axis:     42.51486847 +/-    0.0040
Time of Perihelion: 2456152.9847 +/-     439.4
Perihelion:          39.19158575 +/-    0.0049
Aphelion:            45.83815119 +/-    0.0054
Period (y)              277.2167 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.10896795 +/-    0.0016
Ecliptic Y           19.25756800 +/-    0.0009
Ecliptic Z            1.33306401 +/-    0.0001
Ecliptic XDOT        -0.00140774 +/-    0.0000
Ecliptic YDOT         0.00248159 +/-    0.0000
Ecliptic ZDOT         0.00001535 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.19250795 +/-    0.0015
Geocenter to KBO     38.60472370 +/-    0.0019
# Hcoef:  8.73

The following table shows the complete astrometric record for 11UL411. 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 (11UL411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.50665  01 51 18.827  +13 33 20.77  24.5r 11UL411   568  C~1C6N      
2011 08  29.59745  01 51 18.571  +13 33 19.80  24.6r 11UL411   568  C~1C6N      
2011 10  24.41621  01 47 26.755  +13 13 27.00  24.2r 11UL411   568  C~1C6N      
2011 10  24.45893  01 47 26.541  +13 13 25.81  24.5r 11UL411   568  C~1C6N      
2011 10  24.50160  01 47 26.315  +13 13 24.59  24.2r 11UL411   568  C~1C6N      
2011 10  28.49290  01 47 06.455  +13 11 33.72  24.7r 11UL411   568  C~1C6N      
2011 10  30.53764  01 46 56.321  +13 10 36.95        11UL411   568  C~1C6N      
2011 11  26.46510  01 44 54.997  +12 58 49.49        11UL411   568  C~1C6N      
2012 01  27.29405  01 43 39.239  +12 48 46.82  24.4r 11UL411   568  C~1C6O      
2012 08  17.58997  01 57 37.337  +14 07 28.37  24.8r 11UL411   568  C~1C6O      
2012 08  24.54776  01 57 25.452  +14 06 45.55  24.6r 11UL411   568  C~1C6O      
2012 10  17.39097  01 53 58.486  +13 49 46.52        11UL411   568  C~1C6O      
2012 10  17.42115  01 53 58.326  +13 49 45.63        11UL411   568  C~1C6O      
2012 10  20.48606  01 53 43.012  +13 48 23.44  24.2r 11UL411   568  C~1C6O      
2013 01  14.35439  01 49 15.548  +13 21 10.21  24.5r 11UL411   568  C~1C6O      
2013 02  03.27083  01 49 43.805  +13 22 41.53  25.1r 11UL411   568  C~1C6O      

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     0.17       0.00     0.03
  2   0.0002     -3.84    -0.10       0.41     0.15
  3   0.1531  -3590.13    -0.01      81.65    -0.03
  4   0.1532  -3593.47     0.03      81.65    -0.05
  5   0.1533  -3596.99    -0.11      81.68    -0.03
  6   0.1642  -3907.59     0.06      81.26    -0.13
  7   0.1698  -4066.16    -0.06      80.90     0.02
  8   0.2436  -5975.71     0.06      52.99     0.19
  9   0.4128  -7227.14    -0.05    -112.54    -0.07
 10   0.9694   5882.35    -0.14      -4.62    -0.06
 11   0.9885   5705.18    -0.11      15.01    -0.12
 12   1.1359   2524.87     0.17     107.13    -0.05
 13   1.1360   2522.37     0.04     107.11    -0.10
 14   1.1444   2284.62     0.17     108.07    -0.10
 15   1.3795  -1940.60    -0.07     -48.76     0.08
 16   1.4340  -1522.55    -0.06    -109.21     0.26

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.

11UL411    quality flag:2

Type:          5:3EE     5:3EE CLASSICAL

axisobj        42.600    42.613    42.587
ecceobj         0.080     0.080     0.080
incobj          1.974     1.974     1.974
qmin           38.460    38.526    37.864
qmax           46.603    46.760    47.180
amean          42.330    42.330    42.329
amin           41.949    41.956    41.927
amax           42.722    42.725    42.768
emean           0.067     0.068     0.067
emin            0.043     0.048     0.015
emax            0.093     0.094     0.104
imean           4.122     3.986     4.497
imin            2.632     2.659     2.517
imax            5.300     5.145     6.344
excite_mean     0.099     0.098     0.106
fracstop        1.000     1.000     1.000
cjmean          3.070     3.070     3.068

libcent 0       180.0     179.1    -180.0
libamp  0       104.5      81.8    -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       181.8     180.5     156.3
kozaiamp        180.0     180.0     179.9