Orbit Fit and Astrometric record for 11UQ62

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: 11UQ62    
# Created Wed Feb 21 02:37:40 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   59 observations of   60
# Arc:  12.13y
# First observation: 2002/10/05
#  Last observation: 2014/11/20
# Chi-squared of fit:    52.25 DOF:  112 RMS:  0.17
# Min/Max residuals:    -0.37    0.53
# Exact a, adot, b, bdot, g, gdot:
  2.144065E-05  6.285522E-02  2.415908E-06  7.751179E-03  4.588982E-02 -4.289210E-02
# Covariance matrix:
  2.2847E-08  1.9697E-05  2.0251E-08 -3.4446E-06 -9.5538E-07  1.3061E-05
  1.9697E-05  1.9504E-02  1.7469E-05 -3.4075E-03 -8.2405E-04  1.2922E-02
  2.0251E-08  1.7469E-05  1.7951E-08 -3.0550E-06 -8.4683E-07  1.1583E-05
 -3.4446E-06 -3.4075E-03 -3.0550E-06  5.9543E-04  1.4411E-04 -2.2577E-03
 -9.5538E-07 -8.2405E-04 -8.4683E-07  1.4411E-04  3.9951E-05 -5.4642E-04
  1.3061E-05  1.2922E-02  1.1583E-05 -2.2577E-03 -5.4642E-04  8.5618E-03
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.384080  -41.697325   -0.799953    0.159065   -0.578280  2452552.687153
# Heliocentric elements and errors
Epoch:              2452552.5000  =  2002/10/05
Mean Anomaly:          347.67360 +/-     0.000
Argument of Peri:      148.32316 +/-     0.002
Long of Asc Node:      252.84249 +/-     0.001
Inclination:            16.13086 +/-     0.002
Eccentricity:         0.72005449 +/-    0.0000
Semi-Major Axis:     52.32947136 +/-    0.0000
Time of Perihelion: 2457286.7560 +/-       0.1
Perihelion:          14.64940068 +/-    0.0000
Aphelion:            90.00954203 +/-    0.0000
Period (y)              378.5539 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           16.66744462 +/-    0.0000
Ecliptic Y          -13.77230623 +/-    0.0000
Ecliptic Z            5.78105608 +/-    0.0000
Ecliptic XDOT         0.00055307 +/-    0.0000
Ecliptic YDOT         0.00451979 +/-    0.0000
Ecliptic ZDOT        -0.00023279 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   22.38111581 +/-    0.0000
Geocenter to KBO     21.79169024 +/-    0.0000
# Hcoef:  9.44

The following table shows the complete astrometric record for 11UQ62. 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 (11UQ62) followed by the observatory code and reference code for the source of the astrometry.

2002 10  05.186410 21 04 12.38   -00 40 17.8   22.3V 11UQ62    645  C~2POS      
2002 10  05.187239 21 04 12.38   -00 40 17.9   22.8V 11UQ62    645  C~2POS      
2002 10  05.189727 21 04 12.38   -00 40 17.8   23.6V 11UQ62    645  C~2POS      
2003 10  17.119174 21 17 26.12   +00 43 30.2   22.7V 11UQ62    645  C~2POS      
2003 10  17.120004 21 17 26.14   +00 43 29.9   22.1V 11UQ62    645  C~2POS      
2003 10  17.122491 21 17 26.13   +00 43 30.2   23.8V 11UQ62    645  C~2POS      
2003 10  22.099269 21 17 19.26   +00 39 40.3   22.5V 11UQ62    645  C~2POS      
2003 10  22.100098 21 17 19.26   +00 39 40.3   22.1V 11UQ62    645  C~2POS      
2003 10  22.102586 21 17 19.23   +00 39 40.2   23.0V 11UQ62    645  C~2POS      
2008 11  01.269762 22 47 20.19   +10 15 33.7         11UQ62    645  C~1vWW      
2008 11  01.270591 22 47 20.19   +10 15 33.7         11UQ62    645  C~1vWW      
2008 11  01.273079 22 47 20.18   +10 15 33.6         11UQ62    645  C~1vWW      
2008 11  17.138816 22 46 59.26   +09 58 00.2   22.1V 11UQ62    645  C~1vWW      
2008 11  17.139645 22 46 59.26   +09 58 00.2   21.8V 11UQ62    645  C~1vWW      
2008 11  17.142133 22 46 59.26   +09 58 00.0   22.8V 11UQ62    645  C~1vWW      
2008 11  19.183542 22 47 00.51   +09 56 02.2         11UQ62    645  C~1vWW      
2008 11  19.186029 22 47 00.51   +09 56 02.2         11UQ62    645  C~1vWW      
2008 11  19.192812 22 47 00.51   +09 56 02.3         11UQ62    645  C~1vWW      
2011 10  19.26177  00 09 43.482  +17 43 35.13  21.5w 11UQ62    F51  C@0612      
2011 10  19.27564  00 09 43.351  +17 43 33.83  21.4w 11UQ62    F51  C@0612      
2011 10  19.28952  00 09 43.213  +17 43 32.61  21.5w 11UQ62    F51  C@0612      
2011 10  19.30347  00 09 43.079  +17 43 31.48  21.9w 11UQ62    F51  C~0ZWq      
2011 10  20.321564 00 09 33.91   +17 42 00.3   20.8R 11UQ62    F65  C~0ZWq      
2011 10  20.324322 00 09 33.88   +17 42 00.1   21.1R 11UQ62    F65  C~0ZWq      
2011 10  20.327114 00 09 33.86   +17 41 59.9   21.2R 11UQ62    F65  C~0ZWq      
2011 10  21.294555 00 09 25.25   +17 40 32.8   21.1R 11UQ62    F65  C~0ZWq      
2011 10  21.297318 00 09 25.22   +17 40 32.7   21.0R 11UQ62    F65  C~0ZWq      
2011 10  21.300076 00 09 25.19   +17 40 32.3   21.1R 11UQ62    F65  C~0ZWq      
2011 10  21.302836 00 09 25.17   +17 40 32.1   21.3R 11UQ62    F65  C~0ZWq      
2011 10  21.305623 00 09 25.15   +17 40 31.9   21.2R 11UQ62    F65  C~0ZWq      
2011 10  21.308403 00 09 25.12   +17 40 31.6   21.3R 11UQ62    F65  C~0ZWq      
2011 10  21.311187 00 09 25.10   +17 40 31.4   21.1R 11UQ62    F65  C~0ZWq      
2011 10  21.313952 00 09 25.07   +17 40 31.1   21.6R 11UQ62    F65  C~0ZWq      
2011 10  21.316692 00 09 25.04   +17 40 30.8   21.2R 11UQ62    F65  C~0ZWq      
2011 10  28.232844 00 08 26.954  +17 30 00.74  20.6R 11UQ62    568  C~0hkj      
2011 10  28.234095 00 08 26.941  +17 30 00.62  20.7R 11UQ62    568  C~0hkj      
2011 10  28.235352 00 08 26.933  +17 30 00.52  20.6R 11UQ62    568  C~0hkj      
2011 10  28.292962 00 08 26.464  +17 29 55.23  20.7R 11UQ62    568  C~0hkj      
2011 10  28.371113 00 08 25.829  +17 29 48.07  20.9R 11UQ62    568  C~0hkj      
2011 10  28.372364 00 08 25.817  +17 29 47.96  20.8R 11UQ62    568  C~0hkj      
2011 10  28.373622 00 08 25.809  +17 29 47.81  21.0R 11UQ62    568  C~0hkj      
2012 10  08.30834  00 44 19.496  +20 12 06.81  21.2w 11UQ62    F51  C~1vWW      
2012 10  08.32286  00 44 19.340  +20 12 05.68  21.1w 11UQ62    F51  C~1vWW      
2012 10  08.33738  00 44 19.161  +20 12 04.73  21.1w 11UQ62    F51  C~1vWW      
2012 10  08.35228  00 44 19.022  +20 12 03.65  21.1w 11UQ62    F51  C~1vWW      
2014 10  01.54643  01 58 51.834  +23 43 44.86  21.4w 11UQ62    F51  C~1vWW      
2014 10  01.55914  01 58 51.708  +23 43 44.13  21.5w 11UQ62    F51  C~1vWW      
2014 10  01.57187  01 58 51.583  +23 43 43.41  21.4w 11UQ62    F51  C~1vWW      
2014 10  01.58462  01 58 51.452  +23 43 42.81  21.3w 11UQ62    F51  C~1vWW      
2014 10  28.52684  01 53 58.354  +23 14 12.01  21.0w 11UQ62    F51  C~1vWW      
2014 10  28.53889  01 53 58.213  +23 14 10.90  21.0w 11UQ62    F51  C~1vWW      
2014 10  28.55092  01 53 58.084  +23 14 10.04  21.1w 11UQ62    F51  C~1vWW      
2014 10  28.56298  01 53 57.939  +23 14 09.05  21.2w 11UQ62    F51  C~1vWW      
2014 11  09.41080  01 51 48.171  +22 57 26.06  20.7i 11UQ62    F51  C~1vWW      
2014 11  09.42381  01 51 48.031  +22 57 24.95  20.6i 11UQ62    F51  C~1vWW      
2014 11  09.43680  01 51 47.884  +22 57 23.80  20.7i 11UQ62    F51  C~1vWW      
2014 11  20.42706  01 49 59.358  +22 41 00.26  21.1w 11UQ62    F51  C~1vWW      
2014 11  20.44073  01 49 59.235  +22 40 59.16  21.1w 11UQ62    F51  C~1vWW      
2014 11  20.45440  01 49 59.114  +22 40 57.95  21.2w 11UQ62    F51  C~1vWW      
2014 11  20.46806  01 49 58.979  +22 40 56.56  21.2w 11UQ62    F51  C~1vWW      

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 (  -0.39)      0.00 (  -3.80)
  2   0.0000      0.00     0.11       0.00     0.04
  3   0.0000      0.00     0.23       0.00     0.25
  4   1.0320      0.00    -0.37       0.00    -0.10
  5   1.0320      0.00    -0.04       0.00    -0.36
  6   1.0320      0.00    -0.12       0.00     0.06
  7   1.0456      0.00     0.27       0.00     0.02
  8   1.0456      0.00     0.29       0.00     0.05
  9   1.0456      0.00    -0.12       0.00     0.06
 10   6.0755      0.00     0.10       0.00     0.20
 11   6.0755      0.00     0.14       0.00     0.26
 12   6.0755      0.00     0.11       0.00     0.34
 13   6.1190      0.00     0.07       0.00    -0.36
 14   6.1190      0.00     0.07       0.00    -0.31
 15   6.1190      0.00     0.06       0.00    -0.36
 16   6.1246      0.00    -0.05       0.00    -0.10
 17   6.1246      0.00    -0.08       0.00     0.04
 18   6.1246      0.00    -0.15       0.00     0.53
 19   9.0379      0.00     0.19       0.00     0.07
 20   9.0379      0.00     0.15       0.00     0.00
 21   9.0379      0.00     0.02       0.00     0.01
 22   9.0380      0.00    -0.04       0.00     0.12
 23   9.0408      0.00     0.25       0.00    -0.02
 24   9.0408      0.00     0.18       0.00     0.02
 25   9.0408      0.00     0.27       0.00     0.07
 26   9.0434      0.00     0.26       0.00    -0.07
 27   9.0434      0.00     0.19       0.00     0.08
 28   9.0434      0.00     0.11       0.00    -0.08
 29   9.0434      0.00     0.19       0.00    -0.03
 30   9.0434      0.00     0.27       0.00     0.02
 31   9.0435      0.00     0.20       0.00    -0.03
 32   9.0435      0.00     0.28       0.00     0.02
 33   9.0435      0.00     0.20       0.00    -0.03
 34   9.0435      0.00     0.13       0.00    -0.08
 35   9.0624      0.00    -0.13       0.00     0.29
 36   9.0624      0.00    -0.18       0.00     0.28
 37   9.0624      0.00    -0.14       0.00     0.30
 38   9.0626      0.00    -0.16       0.00     0.28
 39   9.0628      0.00    -0.14       0.00     0.29
 40   9.0628      0.00    -0.17       0.00     0.30
 41   9.0628      0.00    -0.13       0.00     0.27
 42  10.0099      0.00     0.21       0.00     0.06
 43  10.0100      0.00     0.22       0.00     0.04
 44  10.0100      0.00    -0.11       0.00     0.20
 45  10.0100      0.00     0.23       0.00     0.27
 46  11.9900      0.00     0.08       0.00     0.06
 47  11.9901      0.00     0.11       0.00    -0.05
 48  11.9901      0.00     0.15       0.00    -0.15
 49  11.9901      0.00     0.10       0.00    -0.13
 50  12.0639      0.00     0.22       0.00     0.07
 51  12.0639      0.00     0.18       0.00    -0.06
 52  12.0640      0.00     0.31       0.00     0.07
 53  12.0640      0.00     0.20       0.00     0.06
 54  12.0964      0.00     0.01       0.00     0.09
 55  12.0965      0.00     0.01       0.00     0.13
 56  12.0965      0.00    -0.09       0.00     0.13
 57  12.1266      0.00     0.08       0.00    -0.08
 58  12.1266      0.00     0.15       0.00     0.06
 59  12.1267      0.00     0.25       0.00     0.10
 60  12.1267      0.00     0.14       0.00    -0.05

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.

11UQ62    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        53.196    53.195    53.198
ecceobj         0.724     0.724     0.724
incobj         16.133    16.133    16.133
qmin           14.145    14.215    14.162
qmax           94.031    96.885    93.231
amean          52.201    53.340    52.550
amin           50.660    51.685    51.034
amax           54.248    55.673    53.933
emean           0.719     0.726     0.721
emin            0.699     0.714     0.709
emax            0.733     0.740     0.732
imean          17.563    17.270    17.309
imin           16.367    16.335    16.230
imax           20.569    19.751    19.435
excite_mean     0.780     0.784     0.780
fracstop        0.063     0.061     0.058
cjmean          2.323     2.315     2.323

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       202.7     198.4     197.9
kozaiamp         49.4      46.8      46.6