Orbit Fit and Astrometric record for 11UA411

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: 11UA411   
# Created Tue Oct 24 01:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   29
# Arc:   2.10y
# First observation: 2011/08/30
#  Last observation: 2013/10/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000394   0.044046   0.000031  -0.006001   0.033999   0.000000
# Chi-squared of fit:     8.27 DOF:   52 RMS:  0.09
# Min/Max residuals:    -0.21    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.966003E-05  4.339640E-02 -2.482803E-06 -5.933135E-03  3.418397E-02 -1.028628E-03
# Covariance matrix:
  1.9451E-13 -7.9277E-14 -1.5107E-15 -6.9671E-18  1.2764E-13  2.4914E-14
 -7.9277E-14  7.1963E-13  1.7421E-14 -1.0261E-13  2.1718E-13  9.2016E-12
 -1.5107E-15  1.7421E-14  9.2058E-14 -7.1889E-14  4.7009E-15  2.6273E-13
 -6.9671E-18 -1.0261E-13 -7.1889E-14  1.3189E-13 -3.9069E-14 -1.5633E-12
  1.2764E-13  2.1718E-13  4.7009E-15 -3.9069E-14  2.4576E-13  3.5345E-12
  2.4914E-14  9.2016E-12  2.6273E-13 -1.5633E-12  3.5345E-12  1.4023E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.051789   32.379968    0.833582    0.039848   -0.563025  2455803.980326
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          351.45987 +/-     0.044
Argument of Peri:      167.13908 +/-     0.076
Long of Asc Node:      238.00122 +/-     0.001
Inclination:             8.63170 +/-     0.000
Eccentricity:         0.25058671 +/-    0.0001
Semi-Major Axis:     39.54800356 +/-    0.0030
Time of Perihelion: 2457955.5002 +/-      11.0
Perihelion:          29.63779948 +/-    0.0037
Aphelion:            49.45820764 +/-    0.0048
Period (y)              248.7110 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.56973944 +/-    0.0004
Ecliptic Y           15.22650098 +/-    0.0002
Ecliptic Z            2.06694966 +/-    0.0000
Ecliptic XDOT        -0.00190555 +/-    0.0000
Ecliptic YDOT         0.00291464 +/-    0.0000
Ecliptic ZDOT        -0.00047977 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.83169770 +/-    0.0003
Geocenter to KBO     29.25348094 +/-    0.0004
# Hcoef:  9.33

The following table shows the complete astrometric record for 11UA411. 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 (11UA411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.47956  01 54 58.086  +16 06 00.58  23.7r 11UA411   568  C~1C6M      
2011 08  30.53207  01 54 57.916  +16 05 59.88  23.9r 11UA411   568  C~1C6M      
2011 08  30.57849  01 54 57.778  +16 05 59.30  24.0r 11UA411   568  C~1C6M      
2011 09  05.58010  01 54 37.931  +16 04 34.09  24.4r 11UA411   568  C~1C6M      
2011 10  25.32951  01 50 08.155  +15 40 13.54        11UA411   568  C~1C6M      
2011 10  25.37276  01 50 07.878  +15 40 11.94  24.0r 11UA411   568  C~1C6M      
2011 10  25.37795  01 50 07.853  +15 40 11.79  23.9r 11UA411   568  C~1C6M      
2011 10  25.42724  01 50 07.526  +15 40 09.69  23.6r 11UA411   568  C~1C6M      
2011 10  25.48711  01 50 07.141  +15 40 07.47  24.0r 11UA411   568  C~1C6M      
2011 10  26.27825  01 50 02.172  +15 39 37.12  23.6r 11UA411   568  C~1C6M      
2011 10  26.33093  01 50 01.834  +15 39 35.11  23.7r 11UA411   568  C~1C6M      
2011 10  26.37414  01 50 01.554  +15 39 33.52  23.9r 11UA411   568  C~1C6M      
2011 10  31.27710  01 49 30.767  +15 36 23.77        11UA411   568  C~1C6M      
2011 10  31.37984  01 49 30.115  +15 36 19.81        11UA411   568  C~1C6M      
2011 11  28.42497  01 46 52.655  +15 18 39.63  23.9r 11UA411   568  C~1C6M      
2011 11  30.31655  01 46 43.991  +15 17 34.68  24.3r 11UA411   568  C~1C6M      
2012 01  25.31235  01 45 34.487  +15 00 35.19  24.4r 11UA411   568  C~1C6M      
2012 01  26.29717  01 45 36.935  +15 00 36.73  24.1r 11UA411   568  C~1C6M      
2012 01  27.23112  01 45 39.373  +15 00 38.91        11UA411   568  C~1C6M      
2012 08  22.45359  02 05 29.689  +16 39 17.24        11UA411   568  C~1C6M      
2012 08  23.52913  02 05 27.627  +16 39 10.77  24.2r 11UA411   568  C~1C6M      
2012 08  24.56487  02 05 25.533  +16 39 03.75  23.7r 11UA411   568  C~1C6M      
2012 10  21.32322  02 00 50.913  +16 15 50.55        11UA411   568  C~1C6M      
2012 10  21.34894  02 00 50.749  +16 15 49.70        11UA411   568  C~1C6M      
2012 10  21.37460  02 00 50.584  +16 15 48.65  23.7r 11UA411   568  C~1C6M      
2013 02  06.29902  01 56 08.790  +15 34 41.82  23.7r 11UA411   568  C~1C6M      
2013 10  05.57787  02 12 56.43   +16 56 22.0         11UA411   568  C~1CKy      
2013 10  05.59819  02 12 56.31   +16 56 21.3         11UA411   568  C~1CKy      
2013 10  05.61843  02 12 56.19   +16 56 20.7         11UA411   568  C~1CKy      

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     0.09       0.00    -0.05
  2   0.0001     -2.54    -0.05       0.20    -0.08
  3   0.0003     -4.61     0.03       0.35    -0.13
  4   0.0167   -302.39     0.29      20.60    -0.02
  5   0.1529  -4460.41    -0.08      26.05     0.07
  6   0.1530  -4464.72    -0.05      25.97     0.11
  7   0.1530  -4465.11     0.08      25.96     0.11
  8   0.1532  -4470.27    -0.12      25.67    -0.05
  9   0.1533  -4476.26    -0.09      25.57     0.03
 10   0.1555  -4554.16    -0.04      22.69     0.02
 11   0.1557  -4559.44    -0.05      22.54     0.02
 12   0.1558  -4563.79    -0.05      22.49     0.09
 13   0.1692  -5047.18    -0.07       3.20     0.03
 14   0.1695  -5057.40    -0.06       2.85     0.05
 15   0.2463  -7564.74    -0.21    -174.43    -0.02
 16   0.2514  -7705.24     0.05    -190.11     0.08
 17   0.4047  -9012.86     0.15    -780.47     0.09
 18   0.4074  -8979.15     0.17    -791.80    -0.06
 19   0.4100  -8945.35     0.11    -802.49    -0.14
 20   0.9801   9228.43     0.11   -1248.96    -0.19
 21   0.9830   9198.29    -0.06   -1245.04    -0.06
 22   0.9859   9167.53     0.05   -1241.49    -0.05
 23   1.1440   4973.54    -0.14   -1206.91    -0.02
 24   1.1441   4971.03    -0.09   -1206.90     0.05
 25   1.1441   4968.44    -0.11   -1207.07    -0.07
 26   1.4396    300.50     0.08   -2116.78     0.19
 27   2.1002  15642.93     0.05   -2423.54     0.05
 28   2.1003  15641.06     0.01   -2423.64    -0.03
 29   2.1003  15639.23    -0.00   -2423.64    -0.01

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.

11UA411    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.620    39.630    39.610
ecceobj         0.252     0.252     0.251
incobj          8.630     8.630     8.630
qmin           28.980    29.338    29.063
qmax           50.645    50.070    50.561
amean          39.456    39.456    39.456
amin           38.912    38.945    38.911
amax           40.104    40.054    40.065
emean           0.247     0.223     0.245
emin            0.226     0.190     0.225
emax            0.267     0.255     0.264
imean           9.659    11.385     9.942
imin            8.779     9.692     8.958
imax           10.639    12.875    10.876
excite_mean     0.299     0.298     0.300
fracstop        1.000     1.000     1.000
cjmean          2.950     2.950     2.949

libcent 0       181.4     179.8     179.4
libamp  0       128.2     112.0     126.2
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       191.3     165.9     186.4
kozaiamp        179.9     179.9     180.0