Orbit Fit and Astrometric record for 11UQ411

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: 11UQ411   
# Created Thu Dec 14 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   1.44y
# First observation: 2011/08/30
#  Last observation: 2013/02/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000086   0.013206  -0.000010  -0.011005   0.019468   0.000000
# Chi-squared of fit:     6.20 DOF:   44 RMS:  0.09
# Min/Max residuals:    -0.15    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.013742E-05  1.306003E-02 -9.555874E-06 -1.098597E-02  1.944358E-02 -6.654262E-03
# Covariance matrix:
  3.1365E-13 -7.7179E-14  2.9831E-14 -2.6047E-13  3.3605E-13  1.7816E-11
 -7.7179E-14  2.6342E-13  5.8261E-15 -5.1222E-14  6.8492E-14  3.5077E-12
  2.9831E-14  5.8261E-15  1.2091E-13 -1.8325E-13  5.3220E-14  4.3949E-12
 -2.6047E-13 -5.1222E-14 -1.8325E-13  7.8936E-13 -4.6056E-13 -3.6164E-11
  3.3605E-13  6.8492E-14  5.3220E-14 -4.6056E-13  5.6572E-13  3.1454E-11
  1.7816E-11  3.5077E-12  4.3949E-12 -3.6164E-11  3.1454E-11  2.4479E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.765717   32.034380    0.830163    0.037366   -0.568223  2455803.980326
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          316.28894 +/-     0.216
Argument of Peri:      262.88952 +/-     0.018
Long of Asc Node:      215.51732 +/-     0.000
Inclination:            40.30288 +/-     0.002
Eccentricity:         0.40661861 +/-    0.0029
Semi-Major Axis:     62.90813208 +/-    0.1807
Time of Perihelion: 2477928.7669 +/-      53.2
Perihelion:          37.32851459 +/-    0.2141
Aphelion:            88.48774957 +/-    0.3146
Period (y)              498.9631 +/-      2.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           44.43188631 +/-    0.0017
Ecliptic Y           26.82093907 +/-    0.0010
Ecliptic Z            3.37735325 +/-    0.0001
Ecliptic XDOT        -0.00168508 +/-    0.0000
Ecliptic YDOT         0.00112232 +/-    0.0000
Ecliptic ZDOT        -0.00160507 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   52.00924734 +/-    0.0015
Geocenter to KBO     51.43086740 +/-    0.0020
# Hcoef:  7.10

The following table shows the complete astrometric record for 11UQ411. 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 (11UQ411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.47956  01 54 02.469  +15 42 41.46  23.8r 11UQ411   568  C~1C6O      
2011 08  30.53207  01 54 02.353  +15 42 40.45  24.1r 11UQ411   568  C~1C6O      
2011 08  30.57849  01 54 02.251  +15 42 40.01  24.1r 11UQ411   568  C~1C6O      
2011 09  05.58010  01 53 48.983  +15 41 10.92        11UQ411   568  C~1C6O      
2011 10  25.32951  01 51 00.230  +15 21 57.21  23.7r 11UQ411   568  C~1C6O      
2011 10  25.37276  01 51 00.046  +15 21 56.08  24.1r 11UQ411   568  C~1C6O      
2011 10  25.37795  01 51 00.036  +15 21 55.87  24.0r 11UQ411   568  C~1C6O      
2011 10  25.42724  01 50 59.843  +15 21 54.39  24.2r 11UQ411   568  C~1C6O      
2011 10  25.48711  01 50 59.608  +15 21 52.83  23.5r 11UQ411   568  C~1C6O      
2011 10  26.27825  01 50 56.534  +15 21 30.63  23.8r 11UQ411   568  C~1C6O      
2011 10  26.33093  01 50 56.328  +15 21 29.14  24.0r 11UQ411   568  C~1C6O      
2011 10  26.37414  01 50 56.154  +15 21 27.89  23.9r 11UQ411   568  C~1C6O      
2011 10  31.37984  01 50 36.754  +15 19 06.52  24.1r 11UQ411   568  C~1C6O      
2011 11  24.27071  01 49 11.012  +15 08 00.31  24.3r 11UQ411   568  C~1C6O      
2011 11  28.42497  01 48 58.120  +15 06 11.16  24.2r 11UQ411   568  C~1C6O      
2011 11  30.31655  01 48 52.522  +15 05 22.29  24.3r 11UQ411   568  C~1C6O      
2012 01  26.29717  01 47 53.599  +14 49 49.49        11UQ411   568  C~1C6O      
2012 08  17.56862  01 58 13.024  +15 25 11.36  24.3r 11UQ411   568  C~1C6O      
2012 08  23.55493  01 58 04.858  +15 24 09.18  24.0r 11UQ411   568  C~1C6O      
2012 08  24.52636  01 58 03.312  +15 23 57.81  24.4r 11UQ411   568  C~1C6O      
2012 08  24.58617  01 58 03.206  +15 23 57.13  24.0r 11UQ411   568  C~1C6O      
2012 10  17.41666  01 55 20.530  +15 05 16.68  24.5r 11UQ411   568  C~1C6O      
2012 10  20.51348  01 55 08.417  +15 03 51.78  24.4r 11UQ411   568  C~1C6O      
2013 02  06.28044  01 51 57.152  +14 29 45.93  24.2r 11UQ411   568  C~1C6O      
2013 02  06.28578  01 51 57.171  +14 29 46.21  23.9r 11UQ411   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     0.10       0.00     0.13
  2   0.0001     -1.92    -0.09      -0.36    -0.12
  3   0.0003     -3.46    -0.08      -0.26     0.08
  4   0.0167   -214.12    -0.01     -16.56    -0.10
  5   0.1529  -2903.27     0.05    -237.69    -0.02
  6   0.1530  -2906.16    -0.09    -237.81     0.12
  7   0.1530  -2906.37     0.03    -237.96     0.00
  8   0.1532  -2909.51     0.03    -238.35    -0.10
  9   0.1533  -2913.24     0.10    -238.61    -0.00
 10   0.1555  -2962.69     0.02    -243.65     0.04
 11   0.1557  -2966.00     0.03    -243.99     0.01
 12   0.1558  -2968.80    -0.02    -244.27    -0.01
 13   0.1695  -3281.37     0.04    -277.19    -0.10
 14   0.2349  -4678.53    -0.15    -459.81     0.04
 15   0.2463  -4891.94     0.04    -495.43     0.18
 16   0.2514  -4985.15    -0.15    -512.26     0.04
 17   0.4074  -6116.28     0.18   -1079.76    -0.15
 18   0.9667   3029.08     0.05   -2244.63     0.02
 19   0.9831   2896.75    -0.06   -2262.13    -0.08
 20   0.9858   2871.83     0.05   -2265.07    -0.07
 21   0.9859   2870.16     0.00   -2265.17    -0.02
 22   1.1333    272.92     0.09   -2497.90    -0.11
 23   1.1418     78.86    -0.10   -2516.24     0.10
 24   1.4396  -3237.26    -0.14   -3459.30    -0.05
 25   1.4396  -3236.90     0.08   -3459.13     0.17

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.

11UQ411    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        63.046    63.578    62.534
ecceobj         0.407     0.415     0.398
incobj         40.251    40.251    40.251
qmin           35.190    36.309    36.758
qmax           91.846    91.253    88.448
amean          62.629    63.097    62.037
amin           61.769    62.386    61.345
amax           63.744    64.087    62.986
emean           0.413     0.403     0.386
emin            0.379     0.380     0.367
emax            0.441     0.424     0.406
imean          40.596    41.263    41.229
imin           39.786    40.760    40.753
imax           41.601    41.999    41.869
excite_mean     0.771     0.773     0.764
fracstop        1.000     1.000     1.000
cjmean          2.474     2.468     2.476

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       225.2     177.6     180.2
kozaiamp        180.0     180.0     180.0