Orbit Fit and Astrometric record for 471318

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: 471318    
# Created Fri Dec 15 02:36:49 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   66 observations of   66
# Arc:   4.27y
# First observation: 2011/04/13
#  Last observation: 2015/07/19
# Chi-squared of fit:   100.44 DOF:  126 RMS:  0.22
# Min/Max residuals:    -0.73    0.73
# Exact a, adot, b, bdot, g, gdot:
  1.411013E-05  2.125487E-02  6.516606E-06  1.100412E-02  2.471636E-02  3.412294E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.343430 -132.642070    0.416268   -0.085371   -0.912205  2455664.951686
# Heliocentric elements and errors
Epoch:              2455664.5000  =  2011/04/13
Mean Anomaly:           82.94822 +/-     0.000
Argument of Peri:      250.59194 +/-     0.000
Long of Asc Node:      236.78346 +/-     0.000
Inclination:            27.77333 +/-     0.000
Eccentricity:         0.13239461 +/-    0.0000
Semi-Major Axis:     41.31962187 +/-    0.0000
Time of Perihelion: 2433311.4136 +/-       0.0
Perihelion:          35.84912658 +/-    0.0000
Aphelion:            46.79011715 +/-    0.0000
Period (y)              265.6090 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.21090607 +/-    0.0000
Ecliptic Y          -30.02478474 +/-    0.0000
Ecliptic Z           -3.76746137 +/-    0.0000
Ecliptic XDOT         0.00139833 +/-    0.0000
Ecliptic YDOT        -0.00194929 +/-    0.0000
Ecliptic ZDOT         0.00117847 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.37064015 +/-    0.0000
Geocenter to KBO     40.45896861 +/-    0.0000
# Hcoef:  5.27

The following table shows the complete astrometric record for 471318. 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 (471318) followed by the observatory code and reference code for the source of the astrometry.

2011 04  13.45092  14 53 04.794  -22 08 02.42  21.4r 471318    F51  C~1vWP      
2011 04  13.46129  14 53 04.751  -22 08 02.35  21.5r 471318    F51  C~1vWP      
2011 04  13.54659  14 53 04.342  -22 08 00.50  21.8g 471318    F51  C~1vWP      
2011 04  13.55748  14 53 04.308  -22 08 00.39  21.8g 471318    F51  C~1vWP      
2011 05  03.03824  14 51 29.813  -21 59 55.89  21.3R 471318    809  C~0WjO      
2011 05  03.22839  14 51 28.846  -21 59 50.82  21.4R 471318    809  C~0WjO      
2011 05  03.38333  14 51 28.059  -21 59 46.82  21.2R 471318    809  C~0WjO      
2011 05  25.10469  14 49 40.80   -21 49 30.0         471318    809  C~0WjO      
2011 05  25.12408  14 49 40.72   -21 49 29.4         471318    809  C~0WjO      
2011 07  24.01773  14 46 49.35   -21 25 09.5         471318    809  C~0hfZ      
2011 07  24.14664  14 46 49.34   -21 25 07.9         471318    809  C~0hfZ      
2012 04  01.31452  14 59 39.67   -21 56 28.9         471318    809  C~0hfZ      
2012 04  01.37617  14 59 39.41   -21 56 27.9         471318    809  C~0hfZ      
2012 05  20.38740  14 55 47.446  -21 36 32.44  21.5w 471318    F51  C~1vWP      
2012 05  20.40199  14 55 47.375  -21 36 31.93  21.7w 471318    F51  C~1vWP      
2012 05  20.41659  14 55 47.304  -21 36 31.49  21.7w 471318    F51  C~1vWP      
2013 04  16.49000  15 04 19.240  -21 35 29.87  21.6w 471318    F51  C~1vWP      
2013 04  16.50614  15 04 19.154  -21 35 29.75  21.7w 471318    F51  C~1vWP      
2013 04  16.52227  15 04 19.089  -21 35 29.30  21.3w 471318    F51  C~1vWP      
2013 04  16.53841  15 04 19.006  -21 35 28.84  21.1w 471318    F51  C~1vWP      
2013 05  31.560640 15 00 40.243  -21 16 00.67  21.2R 471318    413  C~0sPd      
2013 05  31.577979 15 00 40.174  -21 16 00.10  20.8R 471318    413  C~0sPd      
2013 06  04.015512 15 00 24.823  -21 14 27.13  20.9R 471318    W86  C~0sPd      
2013 06  04.018459 15 00 24.807  -21 14 26.86  21.2R 471318    W86  C~0sPd      
2013 06  04.057872 15 00 24.637  -21 14 26.06  20.7R 471318    W86  C~0sPd      
2013 06  04.060821 15 00 24.621  -21 14 25.83  20.9R 471318    W86  C~0sPd      
2014 04  30.45098  15 08 54.682  -21 13 39.75  21.3w 471318    F51  C~1vWP      
2014 04  30.46287  15 08 54.623  -21 13 39.53  21.4w 471318    F51  C~1vWP      
2014 04  30.47476  15 08 54.564  -21 13 39.24  21.4w 471318    F51  C~1vWP      
2014 04  30.48662  15 08 54.497  -21 13 39.00  21.6w 471318    F51  C~1vWP      
2014 05  20.37838  15 07 15.648  -21 05 04.53  21.3w 471318    F51  C~1vWP      
2014 05  20.38970  15 07 15.602  -21 05 04.30  21.2w 471318    F51  C~1vWP      
2014 05  20.40100  15 07 15.536  -21 05 03.99  21.1w 471318    F51  C~1vWP      
2014 05  20.41229  15 07 15.482  -21 05 03.69  21.4w 471318    F51  C~1vWP      
2014 06  07.32080  15 05 52.197  -20 57 10.04  21.1r 471318    F51  C~1vWP      
2014 06  07.34376  15 05 52.094  -20 57 09.25  21.1r 471318    F51  C~1vWP      
2014 06  07.35522  15 05 52.037  -20 57 09.26  21.5r 471318    F51  C~1vWP      
2014 06  19.33551  15 05 04.325  -20 52 08.89  21.5w 471318    F51  C~1vWP      
2014 06  19.34610  15 05 04.293  -20 52 08.63  21.6w 471318    F51  C~1vWP      
2014 06  19.35669  15 05 04.241  -20 52 08.39  21.7w 471318    F51  C~1vWP      
2014 06  19.36728  15 05 04.208  -20 52 08.04  21.4w 471318    F51  C~1vWP      
2014 07  25.26558  15 03 43.770  -20 40 29.79  21.4w 471318    F51  C~1vWP      
2014 07  25.27619  15 03 43.762  -20 40 29.53  21.2w 471318    F51  C~1vWP      
2014 07  25.28676  15 03 43.756  -20 40 29.35  21.4w 471318    F51  C~1vWP      
2014 07  25.29733  15 03 43.734  -20 40 29.41  21.5w 471318    F51  C~1vWP      
2015 02  24.64414  15 17 54.161  -21 12 59.34  21.3w 471318    F51  C~1vWP      
2015 02  24.64963  15 17 54.149  -21 12 59.25  21.3w 471318    F51  C~1vWP      
2015 02  24.65511  15 17 54.153  -21 12 59.36  21.4w 471318    F51  C~1vWP      
2015 05  20.05322  15 12 56.73   -20 48 35.0   22.4V 471318    W84  C~1TjR      
2015 05  21.06057  15 12 51.77   -20 48 09.1         471318    W84  C~1TjR      
2015 05  22.14044  15 12 46.47   -20 47 41.1         471318    W84  C~1TjR      
2015 06  11.31488  15 11 13.890  -20 39 07.19  21.6w 471318    F51  C~1vWP      
2015 06  11.32607  15 11 13.841  -20 39 06.90  21.8w 471318    F51  C~1vWP      
2015 06  11.33728  15 11 13.785  -20 39 06.69  21.5w 471318    F51  C~1vWP      
2015 06  11.34848  15 11 13.752  -20 39 06.49  21.6w 471318    F51  C~1vWP      
2015 07  18.29806  15 09 24.794  -20 26 17.12  21.9w 471318    F51  C~1vWP      
2015 07  18.30928  15 09 24.766  -20 26 17.49  22.1w 471318    F51  C~1vWP      
2015 07  18.32047  15 09 24.753  -20 26 17.21  22.1w 471318    F51  C~1vWP      
2015 07  19.27274  15 09 23.395  -20 26 02.49  21.6w 471318    F51  C~1vWP      
2015 07  19.27338  15 09 23.395  -20 26 02.44  21.7w 471318    F51  C~1vWP      
2015 07  19.28364  15 09 23.378  -20 26 02.39  21.5w 471318    F51  C~1vWP      
2015 07  19.28405  15 09 23.382  -20 26 02.39  21.8w 471318    F51  C~1vWP      
2015 07  19.29460  15 09 23.367  -20 26 02.09  21.7w 471318    F51  C~1vWP      
2015 07  19.29532  15 09 23.364  -20 26 02.15  21.7w 471318    F51  C~1vWP      
2015 07  19.30565  15 09 23.361  -20 26 01.98  22.0w 471318    F51  C~1vWP      
2015 07  19.30599  15 09 23.348  -20 26 02.00  22.0w 471318    F51  C~1vWP      

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     0.65
  2   0.0000      0.00     0.06       0.00    -0.04
  3   0.0003      0.00    -0.12       0.00    -0.08
  4   0.0003      0.00     0.13       0.00    -0.22
  5   0.0536      0.00     0.65       0.00     0.28
  6   0.0541      0.00     0.69       0.00     0.24
  7   0.0546      0.00     0.73       0.00    -0.00
  8   0.1140      0.00    -0.28       0.00    -0.18
  9   0.1141      0.00    -0.08       0.00    -0.14
 10   0.2781      0.00    -0.64       0.00     0.20
 11   0.2784      0.00     0.08       0.00    -0.25
 12   0.9688      0.00     0.12       0.00    -0.15
 13   0.9690      0.00    -0.11       0.00    -0.26
 14   1.1032      0.00    -0.09       0.00    -0.11
 15   1.1032      0.00    -0.07       0.00    -0.01
 16   1.1033      0.00    -0.05       0.00     0.02
 17   2.0097      0.00     0.16       0.00     0.04
 18   2.0097      0.00     0.00       0.00    -0.20
 19   2.0098      0.00     0.16       0.00    -0.10
 20   2.0098      0.00     0.04       0.00    -0.00
 21   2.1331      0.00    -0.19       0.00     0.11
 22   2.1331      0.00    -0.03       0.00     0.20
 23   2.1425      0.00    -0.11       0.00    -0.02
 24   2.1426      0.00    -0.15       0.00     0.17
 25   2.1427      0.00    -0.06       0.00    -0.08
 26   2.1427      0.00    -0.11       0.00     0.07
 27   3.0472      0.00     0.08       0.00     0.04
 28   3.0473      0.00     0.09       0.00    -0.03
 29   3.0473      0.00     0.10       0.00    -0.03
 30   3.0473      0.00    -0.02       0.00    -0.09
 31   3.1018      0.00     0.07       0.00     0.03
 32   3.1018      0.00     0.22       0.00    -0.04
 33   3.1018      0.00     0.08       0.00    -0.03
 34   3.1019      0.00     0.12       0.00    -0.04
 35   3.1509      0.00     0.25       0.00    -0.07
 36   3.1510      0.00     0.22       0.00     0.13
 37   3.1510      0.00     0.12       0.00    -0.17
 38   3.1838      0.00     0.03       0.00    -0.09
 39   3.1838      0.00     0.14       0.00    -0.09
 40   3.1839      0.00    -0.05       0.00    -0.10
 41   3.1839      0.00     0.05       0.00    -0.01
 42   3.2822      0.00     0.09       0.00    -0.00
 43   3.2822      0.00     0.09       0.00     0.11
 44   3.2822      0.00     0.12       0.00     0.14
 45   3.2823      0.00    -0.09       0.00    -0.07
 46   3.8691      0.00     0.13       0.00    -0.11
 47   3.8691      0.00    -0.01       0.00    -0.04
 48   3.8691      0.00     0.09       0.00    -0.17
 49   4.1002      0.00    -0.71       0.00     0.28
 50   4.1030      0.00    -0.73       0.00     0.13
 51   4.1059      0.00    -0.70       0.00     0.20
 52   4.1612      0.00     0.23       0.00    -0.17
 53   4.1612      0.00     0.21       0.00    -0.15
 54   4.1612      0.00     0.09       0.00    -0.22
 55   4.1613      0.00     0.31       0.00    -0.29
 56   4.2624      0.00     0.20       0.00     0.50
 57   4.2624      0.00     0.04       0.00    -0.04
 58   4.2625      0.00     0.10       0.00     0.06
 59   4.2651      0.00     0.10       0.00    -0.04
 60   4.2651      0.00     0.12       0.00     0.00
 61   4.2651      0.00     0.09       0.00    -0.10
 62   4.2651      0.00     0.16       0.00    -0.11
 63   4.2651      0.00     0.17       0.00     0.03
 64   4.2651      0.00     0.14       0.00    -0.05
 65   4.2652      0.00     0.32       0.00    -0.04
 66   4.2652      0.00     0.13       0.00    -0.06

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.

471318    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.219    41.219    41.218
ecceobj         0.133     0.133     0.133
incobj         27.803    27.803    27.803
qmin           35.365    35.340    35.362
qmax           47.934    47.931    47.906
amean          41.484    41.481    41.484
amin           41.138    41.139    41.138
amax           41.848    41.838    41.847
emean           0.129     0.129     0.129
emin            0.113     0.112     0.114
emax            0.145     0.146     0.145
imean          28.993    28.989    28.992
imin           28.660    28.660    28.660
imax           29.421    29.421    29.421
excite_mean     0.502     0.502     0.502
fracstop        1.000     1.000     1.000
cjmean          2.762     2.762     2.762

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       181.2     182.0     181.2
kozaiamp        180.0     180.0     180.0