Orbit Fit and Astrometric record for 11UK412

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: 11UK412   
# Created Wed Dec 13 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   32
# Arc:   4.36y
# First observation: 2008/10/02
#  Last observation: 2013/02/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000373   0.026641  -0.000202  -0.012671   0.027946   0.000000
# Chi-squared of fit:     9.15 DOF:   58 RMS:  0.09
# Min/Max residuals:    -0.25    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.534279E-05  2.693855E-02 -6.962101E-06 -1.287750E-02  2.769711E-02  6.975421E-04
# Covariance matrix:
  4.7574E-13 -2.5391E-13 -2.4783E-14  6.1463E-14 -1.1672E-13 -1.2167E-12
 -2.5391E-13  3.9966E-13  6.8388E-14 -1.7003E-13  3.7246E-13  3.3760E-12
 -2.4783E-14  6.8388E-14  4.4078E-13 -1.5846E-13  6.8754E-14  6.4618E-13
  6.1463E-14 -1.7003E-13 -1.5846E-13  1.2252E-13 -1.7204E-13 -1.6059E-12
 -1.1672E-13  3.7246E-13  6.8754E-14 -1.7204E-13  5.0492E-13  3.4425E-12
 -1.2167E-12  3.3760E-12  6.4618E-13 -1.6059E-12  3.4425E-12  3.1871E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.145836   25.074810    0.264201    0.120011   -0.956995  2454741.926832
# Heliocentric elements and errors
Epoch:              2454740.5000  =  2008/10/01
Mean Anomaly:           11.31108 +/-     0.102
Argument of Peri:      150.47601 +/-     0.125
Long of Asc Node:      218.90387 +/-     0.000
Inclination:            26.38214 +/-     0.000
Eccentricity:         0.09386402 +/-    0.0001
Semi-Major Axis:     40.80180266 +/-    0.0029
Time of Perihelion: 2451749.4822 +/-      27.0
Perihelion:          36.97198153 +/-    0.0033
Aphelion:            44.63162378 +/-    0.0038
Period (y)              260.6317 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.43509709 +/-    0.0008
Ecliptic Y           15.34764994 +/-    0.0004
Ecliptic Z            4.49103035 +/-    0.0001
Ecliptic XDOT        -0.00091706 +/-    0.0000
Ecliptic YDOT         0.00251015 +/-    0.0000
Ecliptic ZDOT        -0.00125459 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.06245310 +/-    0.0008
Geocenter to KBO     36.10485032 +/-    0.0009
# Hcoef:  7.94

The following table shows the complete astrometric record for 11UK412. 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 (11UK412) followed by the observatory code and reference code for the source of the astrometry.

2008 10  02.426078 01 22 04.17   +16 20 37.5         11UK412   645  C~1Q4E      
2008 10  02.426908 01 22 04.16   +16 20 37.5         11UK412   645  C~1Q4E      
2008 10  02.429395 01 22 04.15   +16 20 37.4         11UK412   645  C~1Q4E      
2011 08  30.49881  01 45 35.764  +16 11 55.46  23.5r 11UK412   568  C~1C6Q      
2011 08  30.54538  01 45 35.627  +16 11 54.51  23.6r 11UK412   568  C~1C6Q      
2011 08  30.59180  01 45 35.495  +16 11 53.81  23.6r 11UK412   568  C~1C6Q      
2011 10  25.33804  01 41 28.461  +15 45 06.21  23.2r 11UK412   568  C~1C6Q      
2011 10  25.38684  01 41 28.202  +15 45 04.42  23.5r 11UK412   568  C~1C6Q      
2011 10  25.43648  01 41 27.934  +15 45 02.61  23.7r 11UK412   568  C~1C6Q      
2011 10  25.44205  01 41 27.902  +15 45 02.32  23.4r 11UK412   568  C~1C6Q      
2011 10  25.44723  01 41 27.876  +15 45 02.16        11UK412   568  C~1C6Q      
2011 10  25.45234  01 41 27.846  +15 45 01.93  23.4r 11UK412   568  C~1C6Q      
2011 10  25.45781  01 41 27.822  +15 45 01.82  23.4r 11UK412   568  C~1C6Q      
2011 10  26.28698  01 41 23.542  +15 44 30.82  23.4r 11UK412   568  C~1C6Q      
2011 10  26.33962  01 41 23.266  +15 44 28.82  23.5r 11UK412   568  C~1C6Q      
2011 10  26.38266  01 41 23.026  +15 44 27.26  23.4r 11UK412   568  C~1C6Q      
2011 10  26.39884  01 41 22.944  +15 44 26.68  23.3r 11UK412   568  C~1C6Q      
2011 10  26.40555  01 41 22.906  +15 44 26.29  23.5r 11UK412   568  C~1C6Q      
2011 11  26.45630  01 38 57.133  +15 25 11.56  23.7r 11UK412   568  C~1C6Q      
2012 01  25.29229  01 37 48.504  +15 03 35.37  23.7r 11UK412   568  C~1C6Q      
2012 01  26.27710  01 37 50.508  +15 03 30.97  23.9r 11UK412   568  C~1C6Q      
2012 01  27.21101  01 37 52.512  +15 03 27.61  23.3r 11UK412   568  C~1C6Q      
2012 01  27.26158  01 37 52.611  +15 03 27.25  23.6r 11UK412   568  C~1C6Q      
2012 02  24.21899  01 39 32.021  +15 05 48.37  23.2r 11UK412   568  C~1C6Q      
2012 08  17.58141  01 53 00.818  +16 05 05.91  23.8r 11UK412   568  C~1C6Q      
2012 08  17.59430  01 53 00.813  +16 05 05.74  23.7r 11UK412   568  C~1C6Q      
2012 08  17.60362  01 53 00.780  +16 05 05.68  23.7r 11UK412   568  C~1C6Q      
2012 08  22.44017  01 52 52.426  +16 04 15.17  23.4r 11UK412   568  C~1C6Q      
2012 08  24.53923  01 52 48.096  +16 03 49.14  23.5r 11UK412   568  C~1C6Q      
2012 10  17.38671  01 49 09.980  +15 40 31.56  23.4r 11UK412   568  C~1C6Q      
2012 10  20.48174  01 48 53.829  +15 38 40.49  23.4r 11UK412   568  C~1C6Q      
2013 02  09.23077  01 45 19.568  +14 55 23.23  23.3r 11UK412   568  C~1C6Q      

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     0.01       0.00    -0.08
  2   0.0000     -0.13    -0.06       0.05    -0.02
  3   0.0000     -0.30    -0.03       0.02    -0.05
  4   2.9078  18818.11     0.10   -7871.05     0.20
  5   2.9079  18815.91    -0.01   -7871.25     0.02
  6   2.9081  18813.87     0.03   -7871.24     0.05
  7   3.0607  14885.16     0.04   -8120.55    -0.06
  8   3.0608  14881.00     0.04   -8120.90    -0.03
  9   3.0609  14876.72    -0.01   -8121.22     0.04
 10   3.0610  14876.18    -0.08   -8121.33    -0.02
 11   3.0610  14875.77    -0.05   -8121.34     0.00
 12   3.0610  14875.28    -0.10   -8121.41    -0.02
 13   3.0610  14874.91     0.00   -8121.39     0.04
 14   3.0633  14805.75     0.14   -8128.46     0.06
 15   3.0634  14801.29     0.15   -8128.91     0.01
 16   3.0635  14797.48    -0.01   -8129.14     0.12
 17   3.0636  14796.16     0.05   -8129.27     0.13
 18   3.0636  14795.50    -0.03   -8129.44     0.01
 19   3.1486  12404.58     0.05   -8458.74    -0.09
 20   3.3124  11008.94    -0.12   -9315.55     0.12
 21   3.3151  11034.58    -0.04   -9330.14     0.00
 22   3.3177  11060.60     0.17   -9343.75     0.09
 23   3.3178  11061.81     0.01   -9344.61    -0.04
 24   3.3944  12463.60    -0.01   -9730.33     0.21
 25   3.8745  24775.36    -0.03  -10497.81    -0.12
 26   3.8745  24775.23     0.17  -10497.95    -0.25
 27   3.8745  24774.76    -0.07  -10497.84    -0.13
 28   3.8878  24642.33    -0.06  -10504.03    -0.20
 29   3.8935  24573.74    -0.09  -10507.08    -0.20
 30   4.0410  21092.27     0.01  -10733.58     0.13
 31   4.0494  20832.05    -0.08  -10756.80     0.14
 32   4.3554  16987.73    -0.07  -12114.39    -0.06

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.

11UK412    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.067    41.075    41.058
ecceobj         0.099     0.099     0.099
incobj         26.293    26.293    26.293
qmin           36.210    36.247    36.195
qmax           45.606    45.573    45.641
amean          40.793    40.801    40.787
amin           40.473    40.492    40.464
amax           41.127    41.133    41.137
emean           0.095     0.095     0.095
emin            0.081     0.081     0.081
emax            0.109     0.108     0.109
imean          27.245    27.244    27.245
imin           26.814    26.824    26.806
imax           27.654    27.657    27.659
excite_mean     0.468     0.468     0.468
fracstop        1.000     1.000     1.000
cjmean          2.798     2.798     2.798

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       191.2     191.3     190.3
kozaiamp        179.9     180.0     180.0