Orbit Fit and Astrometric record for 11UW410

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: 11UW410   
# Created Mon Oct 23 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   2.16y
# First observation: 2011/08/30
#  Last observation: 2013/10/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000247   0.027161   0.000010   0.004935   0.026756   0.000000
# Chi-squared of fit:    12.51 DOF:   54 RMS:  0.11
# Min/Max residuals:    -0.31    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.532775E-05  2.712365E-02  3.644649E-06  4.972988E-03  2.699352E-02  6.636221E-03
# Covariance matrix:
  1.8138E-13  3.0496E-15 -4.9846E-15  1.8185E-14  1.4136E-13  1.7873E-12
  3.0496E-15  3.6647E-13 -1.9840E-14  8.5485E-14  2.2949E-13  8.5485E-12
 -4.9846E-15 -1.9840E-14  1.0061E-13 -7.8065E-14 -1.6462E-14 -6.4857E-13
  1.8185E-14  8.5485E-14 -7.8065E-14  1.3062E-13  6.6811E-14  2.8283E-12
  1.4136E-13  2.2949E-13 -1.6462E-14  6.6811E-14  2.9509E-13  6.6422E-12
  1.7873E-12  8.5485E-12 -6.4857E-13  2.8283E-12  6.6422E-12  2.8315E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.756393   33.671694    0.846177    0.026192   -0.544746  2455803.971736
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:           63.01470 +/-     0.049
Argument of Peri:      287.01593 +/-     0.011
Long of Asc Node:       17.88385 +/-     0.001
Inclination:            10.73051 +/-     0.001
Eccentricity:         0.21885954 +/-    0.0006
Semi-Major Axis:     39.83840361 +/-    0.0117
Time of Perihelion: 2439724.0306 +/-      10.2
Perihelion:          31.11938898 +/-    0.0259
Aphelion:            48.55741824 +/-    0.0281
Period (y)              251.4555 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.72139613 +/-    0.0006
Ecliptic Y           20.11507124 +/-    0.0004
Ecliptic Z            1.78168489 +/-    0.0000
Ecliptic XDOT        -0.00098910 +/-    0.0000
Ecliptic YDOT         0.00265420 +/-    0.0000
Ecliptic ZDOT         0.00053624 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.60368950 +/-    0.0006
Geocenter to KBO     37.04592601 +/-    0.0007
# Hcoef:  8.32

The following table shows the complete astrometric record for 11UW410. 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 (11UW410) followed by the observatory code and reference code for the source of the astrometry.

2011 08  30.47097  02 01 51.554  +15 19 54.21  23.8r 11UW410   568  C~1C6M      
2011 08  30.52337  02 01 51.418  +15 19 53.72  23.8r 11UW410   568  C~1C6M      
2011 08  30.56976  02 01 51.272  +15 19 53.71  24.0r 11UW410   568  C~1C6M      
2011 09  05.57584  02 01 34.164  +15 19 04.69  24.1r 11UW410   568  C~1C6M      
2011 10  25.36423  01 57 46.038  +15 03 03.63  23.9r 11UW410   568  C~1C6M      
2011 10  25.41871  01 57 45.739  +15 03 02.31  23.8r 11UW410   568  C~1C6M      
2011 10  25.47315  01 57 45.440  +15 03 00.87  24.0r 11UW410   568  C~1C6M      
2011 10  26.26973  01 57 41.194  +15 02 40.26  23.6r 11UW410   568  C~1C6M      
2011 10  26.32241  01 57 40.899  +15 02 39.04  23.9r 11UW410   568  C~1C6M      
2011 10  26.36558  01 57 40.662  +15 02 37.92  23.7r 11UW410   568  C~1C6M      
2011 10  31.30918  01 57 14.202  +15 00 29.86  23.5r 11UW410   568  C~1C6M      
2011 10  31.35747  01 57 13.951  +15 00 28.70  23.9r 11UW410   568  C~1C6M      
2011 10  31.37121  01 57 13.886  +15 00 28.31  24.4r 11UW410   568  C~1C6M      
2011 11  24.30982  01 55 14.483  +14 50 20.40  24.0r 11UW410   568  C~1C6M      
2011 12  01.32447  01 54 44.690  +14 47 40.72  23.8r 11UW410   568  C~1C6M      
2012 01  26.31723  01 53 22.742  +14 38 54.81  24.3r 11UW410   568  C~1C6M      
2012 01  27.25145  01 53 24.124  +14 39 00.48  24.3r 11UW410   568  C~1C6M      
2012 08  17.55584  02 07 53.299  +16 07 53.66  24.3r 11UW410   568  C~1C6M      
2012 08  22.61130  02 07 45.472  +16 07 52.26  24.1r 11UW410   568  C~1C6M      
2012 08  24.48353  02 07 41.985  +16 07 48.45  24.0r 11UW410   568  C~1C6M      
2012 10  21.32322  02 03 46.500  +15 53 00.93  23.7r 11UW410   568  C~1C6M      
2012 10  21.34894  02 03 46.362  +15 53 00.30  23.7r 11UW410   568  C~1C6M      
2012 10  21.37460  02 03 46.222  +15 52 59.70  23.7r 11UW410   568  C~1C6M      
2013 01  14.34100  01 58 47.938  +15 26 27.98        11UW410   568  C~1C6M      
2013 01  17.21184  01 58 48.589  +15 26 23.75        11UW410   568  C~1C6M      
2013 02  02.25091  01 59 08.238  +15 27 27.69  24.1r 11UW410   568  C~1C6M      
2013 02  03.25659  01 59 10.368  +15 27 36.66  23.7r 11UW410   568  C~1C6M      
2013 10  28.51684  02 08 50.37   +16 37 36.6         11UW410   568  C~1CKy      
2013 10  28.53893  02 08 50.25   +16 37 36.0         11UW410   568  C~1CKy      
2013 10  28.56103  02 08 50.13   +16 37 35.5         11UW410   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     0.12       0.00    -0.15
  2   0.0001     -2.02     0.11       0.22    -0.31
  3   0.0003     -4.00    -0.08       0.93     0.07
  4   0.0167   -253.28     0.02      39.89     0.07
  5   0.1530  -3684.74    -0.02     279.45    -0.07
  6   0.1532  -3689.26    -0.02     279.72     0.01
  7   0.1533  -3693.83    -0.05     279.88    -0.02
  8   0.1555  -3758.68     0.07     281.94    -0.17
  9   0.1557  -3763.11    -0.01     282.28    -0.01
 10   0.1558  -3766.72    -0.03     282.42    -0.01
 11   0.1693  -4170.81    -0.08     295.77     0.19
 12   0.1694  -4174.62     0.10     295.94     0.22
 13   0.1695  -4175.64     0.22     295.91     0.14
 14   0.2350  -6010.74    -0.06     330.77     0.01
 15   0.2542  -6471.76    -0.04     332.69     0.11
 16   0.4075  -7771.17    -0.12     258.26     0.16
 17   0.4101  -7750.38    -0.09     256.50     0.24
 18   0.9667   5892.30    -0.01     932.79     0.04
 19   0.9805   5785.55    -0.22     969.45    -0.10
 20   0.9857   5736.91     0.06     982.78    -0.12
 21   1.1440   2240.33    -0.05    1298.57    -0.14
 22   1.1441   2238.25    -0.03    1298.65    -0.16
 23   1.1442   2236.14    -0.03    1298.78    -0.13
 24   1.3768  -2356.87    -0.09    1285.62     0.09
 25   1.3846  -2349.51     0.10    1278.39    -0.22
 26   1.4286  -2060.82     0.08    1239.95    -0.08
 27   1.4313  -2028.82     0.11    1237.70     0.01
 28   2.1630   7266.51     0.01    2337.16     0.12
 29   2.1631   7264.68     0.00    2337.17     0.08
 30   2.1631   7262.89     0.03    2337.28     0.13

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.

11UW410    quality flag:3

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

axisobj        39.918    39.952    39.885
ecceobj         0.220     0.222     0.219
incobj         10.723    10.723    10.723
qmin           28.831    29.456    28.528
qmax           50.858    50.154    50.814
amean          39.456    39.456    39.455
amin           38.948    38.924    38.998
amax           40.073    40.064    39.992
emean           0.235     0.228     0.241
emin            0.194     0.200     0.199
emax            0.271     0.253     0.275
imean           8.835     9.709     8.122
imin            6.750     8.399     5.600
imax           11.152    11.073    11.181
excite_mean     0.282     0.284     0.282
fracstop        1.000     1.000     1.000
cjmean          2.960     2.960     2.961

libcent 0       179.4     180.4     179.1
libamp  0       103.6     125.0      90.4
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       269.3     255.2     269.3
kozaiamp         72.2      53.5      78.6