Orbit Fit and Astrometric record for 11UJ412

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: 11UJ412   
# Created Thu Dec 14 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   1.43y
# First observation: 2011/08/29
#  Last observation: 2013/02/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000204   0.019619   0.000041   0.010906   0.023473   0.000000
# Chi-squared of fit:     3.46 DOF:   28 RMS:  0.08
# Min/Max residuals:    -0.14    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.331756E-05  1.941772E-02  7.326909E-06  1.102199E-02  2.355903E-02 -1.679096E-05
# Covariance matrix:
  5.7656E-13  5.5614E-15 -7.4469E-14  4.7056E-13  6.6052E-13  3.0336E-11
  5.5614E-15  4.3933E-13 -3.0692E-14  1.9324E-13  2.7824E-13  1.2443E-11
 -7.4469E-14 -3.0692E-14  1.8150E-13 -2.8350E-13 -1.2429E-13 -7.4698E-12
  4.7056E-13  1.9324E-13 -2.8350E-13  1.1163E-12  7.8992E-13  4.8977E-11
  6.6052E-13  2.7824E-13 -1.2429E-13  7.8992E-13  1.0636E-12  5.1022E-11
  3.0336E-11  1.2443E-11 -7.4698E-12  4.8977E-11  5.1022E-11  3.1957E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.800210   33.007982    0.848327    0.026474   -0.541793  2455803.072836
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          227.01728 +/-     3.955
Argument of Peri:      140.62894 +/-     3.949
Long of Asc Node:       27.01684 +/-     0.000
Inclination:            29.69052 +/-     0.002
Eccentricity:         0.02519233 +/-    0.0018
Semi-Major Axis:     42.26052712 +/-    0.0055
Time of Perihelion: 2492868.0179 +/-    1102.4
Perihelion:          41.19588603 +/-    0.0752
Aphelion:            43.32516821 +/-    0.0752
Period (y)              274.7328 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.47336843 +/-    0.0016
Ecliptic Y           22.68067328 +/-    0.0010
Ecliptic Z            2.07398912 +/-    0.0001
Ecliptic XDOT        -0.00128655 +/-    0.0000
Ecliptic YDOT         0.00186261 +/-    0.0000
Ecliptic ZDOT         0.00127933 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.00024390 +/-    0.0014
Geocenter to KBO     42.44657362 +/-    0.0019
# Hcoef:  8.11

The following table shows the complete astrometric record for 11UJ412. 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 (11UJ412) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.57207  01 59 12.988  +15 08 40.32  24.5r 11UJ412   568  C~1C6Q      
2011 08  29.61903  01 59 12.877  +15 08 40.06  24.3r 11UJ412   568  C~1C6Q      
2011 10  25.32517  01 55 21.536  +14 56 12.77  23.9r 11UJ412   568  C~1C6Q      
2011 10  25.36849  01 55 21.309  +14 56 12.01  24.2r 11UJ412   568  C~1C6Q      
2011 10  25.42298  01 55 21.034  +14 56 10.78  24.4r 11UJ412   568  C~1C6Q      
2011 10  25.48274  01 55 20.732  +14 56 09.77  24.3r 11UJ412   568  C~1C6Q      
2011 10  26.27399  01 55 16.849  +14 55 53.71        11UJ412   568  C~1C6Q      
2011 10  26.32667  01 55 16.587  +14 55 52.79  24.1r 11UJ412   568  C~1C6Q      
2011 10  26.36985  01 55 16.374  +14 55 51.87  24.5r 11UJ412   568  C~1C6Q      
2011 11  24.28776  01 53 02.180  +14 46 22.58  23.8r 11UJ412   568  C~1C6Q      
2011 11  30.33399  01 52 38.243  +14 44 37.34  24.3r 11UJ412   568  C~1C6Q      
2012 01  27.24139  01 51 12.395  +14 39 14.46  24.6r 11UJ412   568  C~1C6Q      
2012 08  22.45359  02 02 53.828  +16 07 17.23        11UJ412   568  C~1C6Q      
2012 08  23.52913  02 02 51.710  +16 07 18.42  24.4r 11UJ412   568  C~1C6Q      
2012 10  17.37393  01 59 24.999  +15 57 57.50  24.1r 11UJ412   568  C~1C6Q      
2013 02  02.26555  01 54 42.800  +15 38 23.52  24.4r 11UJ412   568  C~1C6Q      
2013 02  03.26646  01 54 44.523  +15 38 33.96  24.5r 11UJ412   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    -0.06       0.00     0.01
  2   0.0001     -1.60     0.03       0.31    -0.14
  3   0.1554  -3403.91     0.17     464.66    -0.01
  4   0.1555  -3407.26     0.07     465.10     0.14
  5   0.1556  -3411.43    -0.01     465.34     0.01
  6   0.1558  -3415.88     0.02     465.93     0.19
  7   0.1580  -3474.24    -0.08     470.56    -0.07
  8   0.1581  -3478.12    -0.03     471.03     0.04
  9   0.1582  -3481.33    -0.01     471.25    -0.04
 10   0.2374  -5504.02    -0.01     621.06    -0.08
 11   0.2540  -5866.32     0.02     644.91     0.05
 12   0.4125  -7146.95    -0.10     783.00    -0.04
 13   0.9826   4204.86     0.07    2207.24    -0.14
 14   0.9855   4176.57    -0.14    2218.78    -0.01
 15   1.1357   1184.57     0.05    2715.34     0.00
 16   1.4311  -3043.06     0.05    3031.99    -0.02
 17   1.4338  -3016.08    -0.03    3033.04     0.12

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.

11UJ412    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.335    42.349    42.322
ecceobj         0.023     0.027     0.021
incobj         29.661    29.660    29.661
qmin           40.003    39.896    40.106
qmax           44.314    44.543    44.217
amean          42.101    42.116    42.088
amin           41.783    41.798    41.776
amax           42.432    42.458    42.410
emean           0.033     0.036     0.031
emin            0.021     0.024     0.020
emax            0.045     0.049     0.043
imean          29.349    29.348    29.349
imin           29.042    29.037    29.045
imax           29.638    29.631    29.639
excite_mean     0.491     0.491     0.491
fracstop        1.000     1.000     1.000
cjmean          2.775     2.775     2.775

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       191.7     192.2     190.7
kozaiamp        180.0     180.0     180.0