Orbit Fit and Astrometric record for 469421

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: 469421    
# Created Tue Oct 24 01:36:49 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   76 observations of   76
# Arc:  13.29y
# First observation: 2001/12/09
#  Last observation: 2015/03/24
# Chi-squared of fit:    73.37 DOF:  146 RMS:  0.17
# Min/Max residuals:    -0.56    0.56
# Exact a, adot, b, bdot, g, gdot:
  1.606582E-05  2.319644E-02  4.414000E-06  7.572371E-03  2.519766E-02 -2.331394E-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
   -0.327248  106.368155    0.473361   -0.004971   -0.857056  2452252.969033
# Heliocentric elements and errors
Epoch:              2452252.5000  =  2001/12/09
Mean Anomaly:          264.01085 +/-     0.000
Argument of Peri:      106.92988 +/-     0.000
Long of Asc Node:      106.67781 +/-     0.000
Inclination:            18.04890 +/-     0.000
Eccentricity:         0.10733059 +/-    0.0000
Semi-Major Axis:     39.66562977 +/-    0.0000
Time of Perihelion: 2476582.3598 +/-       0.0
Perihelion:          35.40829427 +/-    0.0000
Aphelion:            43.92296528 +/-    0.0000
Period (y)              249.8215 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -10.96995713 +/-    0.0000
Ecliptic Y           39.03830063 +/-    0.0000
Ecliptic Z           -0.22650460 +/-    0.0000
Ecliptic XDOT        -0.00235679 +/-    0.0000
Ecliptic YDOT        -0.00094884 +/-    0.0000
Ecliptic ZDOT         0.00082442 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.55102190 +/-    0.0000
Geocenter to KBO     39.68632039 +/-    0.0000
# Hcoef:  5.68

The following table shows the complete astrometric record for 469421. 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 (469421) followed by the observatory code and reference code for the source of the astrometry.

2001 12  09.46829  07 10 50.043  +22 06 41.15        469421    568  Ce7056      
2001 12  09.52376  07 10 49.784  +22 06 42.02        469421    568  Ce7056      
2001 12  09.55544  07 10 49.626  +22 06 42.43        469421    568  Ce7056      
2002 01  14.23677  07 07 39.683  +22 14 27.30  21.3R 469421    568  Ce7056      
2002 01  14.26613  07 07 39.527  +22 14 27.85  21.1R 469421    568  Ce7056      
2002 02  23.31991  07 04 34.82   +22 22 19.9         469421    568  Ce9794      
2002 02  23.35795  07 04 34.69   +22 22 20.1         469421    568  Ce9794      
2003 11  24.43551  07 23 51.81   +22 34 11.3   21.3R 469421    695  C~06AS      
2003 11  24.52897  07 23 51.48   +22 34 12.3         469421    695  C~06AS      
2005 12  23.42949  07 33 52.19   +23 09 02.9   21.0R 469421    568  C~06AS      
2005 12  23.46500  07 33 52.00   +23 09 02.6         469421    568  C~06AS      
2009 10  23.22621  08 01 16.521  +23 39 54.21  22.1V 469421    950  C~0C7Y      
2011 01  30.29395  08 01 47.724  +24 17 45.22  21.7w 469421    F51  C~1vV8      
2011 01  30.30846  08 01 47.641  +24 17 45.37  21.8w 469421    F51  C~1vV8      
2011 01  30.32354  08 01 47.557  +24 17 45.78  21.8w 469421    F51  C~1vV8      
2011 01  30.33791  08 01 47.480  +24 17 46.02  21.6w 469421    F51  C~1vV8      
2011 04  25.28426  07 58 15.423  +24 27 33.11  21.8w 469421    F51  C~1vV8      
2011 04  25.29415  07 58 15.434  +24 27 32.82  21.8w 469421    F51  C~1vV8      
2011 04  25.29904  07 58 15.454  +24 27 32.89  21.6w 469421    F51  C~1vV8      
2012 01  25.48657  08 08 42.483  +24 24 59.15  21.6r 469421    F51  C~1vV8      
2012 01  25.48980  08 08 42.446  +24 24 59.08  21.4r 469421    F51  C~1vV8      
2012 01  25.52870  08 08 42.247  +24 24 59.85  21.3r 469421    F51  C~1vV8      
2012 01  25.53193  08 08 42.227  +24 25 00.17  21.5r 469421    F51  C~1vV8      
2012 01  25.54189  08 08 42.165  +24 25 00.34  21.1i 469421    F51  C~1vV8      
2012 01  25.54520  08 08 42.152  +24 25 00.33  21.5i 469421    F51  C~1vV8      
2012 01  25.55449  08 08 42.099  +24 25 00.35  21.5i 469421    F51  C~1vV8      
2012 01  25.55779  08 08 42.059  +24 25 00.39  21.3i 469421    F51  C~1vV8      
2012 12  23.56341  08 18 04.891  +24 20 30.48  21.5w 469421    F51  C~1vV8      
2012 12  23.57784  08 18 04.818  +24 20 30.86  21.6w 469421    F51  C~1vV8      
2012 12  23.59227  08 18 04.754  +24 20 31.07  21.7w 469421    F51  C~1vV8      
2012 12  23.60661  08 18 04.678  +24 20 31.43  21.5w 469421    F51  C~1vV8      
2013 05  11.25765  08 11 28.190  +24 42 33.77  21.7w 469421    F51  C~1vV8      
2013 05  11.26294  08 11 28.222  +24 42 33.61  21.6w 469421    F51  C~1vV8      
2013 05  11.26825  08 11 28.218  +24 42 33.81  21.9w 469421    F51  C~1vV8      
2013 05  11.27352  08 11 28.235  +24 42 33.52  21.9w 469421    F51  C~1vV8      
2013 10  10.60137  08 26 01.567  +24 08 00.37  21.7w 469421    F51  C~1vV8      
2013 10  10.60600  08 26 01.577  +24 08 00.34  21.9w 469421    F51  C~1vV8      
2013 10  10.61066  08 26 01.596  +24 08 00.57  21.7w 469421    F51  C~1vV8      
2014 01  01.40647  08 23 55.243  +24 30 17.93  21.4w 469421    F51  C~1vV8      
2014 01  01.42032  08 23 55.174  +24 30 18.54  21.5w 469421    F51  C~1vV8      
2014 01  01.43417  08 23 55.095  +24 30 18.77  21.7w 469421    F51  C~1vV8      
2014 01  01.44810  08 23 55.026  +24 30 19.09  21.6w 469421    F51  C~1vV8      
2014 03  06.41510  08 18 24.010  +24 51 20.78  21.6w 469421    F51  C~1vV8      
2014 03  06.42816  08 18 23.953  +24 51 20.80  21.8w 469421    F51  C~1vV8      
2014 03  06.44125  08 18 23.905  +24 51 20.92  21.8w 469421    F51  C~1vV8      
2014 11  19.53350  08 32 57.359  +24 19 31.78  21.8w 469421    F51  C~1vV8      
2014 11  19.54627  08 32 57.364  +24 19 31.21  21.6w 469421    F51  C~1vV8      
2014 11  19.55905  08 32 57.329  +24 19 31.67  21.5w 469421    F51  C~1vV8      
2014 11  19.57183  08 32 57.298  +24 19 31.58  21.8w 469421    F51  C~1vV8      
2015 01  16.52932  08 29 11.828  +24 41 57.71  21.4w 469421    F51  C@0611      
2015 01  16.54152  08 29 11.760  +24 41 57.96  21.5w 469421    F51  C~1vV8      
2015 01  16.55379  08 29 11.694  +24 41 58.31  21.5w 469421    F51  C@0611      
2015 01  16.56609  08 29 11.614  +24 41 58.71  21.5w 469421    F51  C@0611      
2015 02  12.29118  08 26 43.175  +24 51 56.51  21.4w 469421    F51  C~1vV8      
2015 02  12.30445  08 26 43.124  +24 51 56.78  21.5w 469421    F51  C~1vV8      
2015 02  12.31775  08 26 43.065  +24 51 56.53  21.4w 469421    F51  C~1vV8      
2015 02  12.33111  08 26 42.966  +24 51 56.61  21.4w 469421    F51  C~1vV8      
2015 02  13.29018  08 26 37.909  +24 52 14.80  21.6w 469421    F51  C~1vV8      
2015 02  13.30351  08 26 37.833  +24 52 15.53  21.6w 469421    F51  C~1vV8      
2015 02  13.31694  08 26 37.766  +24 52 15.86  21.2w 469421    F51  C~1vV8      
2015 02  13.33028  08 26 37.687  +24 52 15.94  21.4w 469421    F51  C~1vV8      
2015 02  16.29811  08 26 22.262  +24 53 10.87  21.9w 469421    F51  C~1LJ5      
2015 02  16.31047  08 26 22.235  +24 53 10.81  22.0w 469421    F51  C~1LJ5      
2015 02  16.32289  08 26 22.123  +24 53 11.25  21.9w 469421    F51  C~1LJ5      
2015 02  17.28557  08 26 17.235  +24 53 28.14  21.6w 469421    F51  C~1vV8      
2015 02  17.29797  08 26 17.176  +24 53 28.47  22.0w 469421    F51  C~1vV8      
2015 02  17.31029  08 26 17.108  +24 53 28.73  21.9w 469421    F51  C~1vV8      
2015 02  17.32273  08 26 17.037  +24 53 28.99  21.6w 469421    F51  C~1vV8      
2015 03  17.34805  08 24 20.399  +24 59 22.21  21.8w 469421    F51  C~1vV8      
2015 03  17.36048  08 24 20.358  +24 59 22.27  21.6w 469421    F51  C~1vV8      
2015 03  17.37299  08 24 20.316  +24 59 22.38  21.8w 469421    F51  C~1vV8      
2015 03  17.38557  08 24 20.274  +24 59 22.45  21.8w 469421    F51  C~1vV8      
2015 03  24.36765  08 24 01.399  +25 00 02.89  21.7w 469421    F51  C~1vV8      
2015 03  24.38027  08 24 01.355  +25 00 02.93  21.6w 469421    F51  C~1vV8      
2015 03  24.39281  08 24 01.332  +25 00 03.15  21.6w 469421    F51  C~1vV8      
2015 03  24.40537  08 24 01.296  +25 00 02.96  21.8w 469421    F51  C~1vV8      

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     0.17
  2   0.0002      0.00    -0.15       0.00     0.30
  3   0.0002      0.00    -0.23       0.00     0.33
  4   0.0979      0.00     0.06       0.00    -0.19
  5   0.0980      0.00     0.15       0.00    -0.05
  6   0.2077      0.00     0.35       0.00    -0.04
  7   0.2078      0.00     0.32       0.00    -0.20
  8   1.9575      0.00    -0.03       0.00    -0.00
  9   1.9577      0.00    -0.07       0.00    -0.09
 10   4.0382      0.00     0.15       0.00     0.34
 11   4.0383      0.00     0.11       0.00    -0.56
 12   7.8707      0.00     0.05       0.00    -0.01
 13   9.1412      0.00    -0.05       0.00     0.04
 14   9.1412      0.00    -0.08       0.00    -0.08
 15   9.1413      0.00    -0.08       0.00     0.04
 16   9.1413      0.00    -0.03       0.00     0.00
 17   9.3739      0.00     0.08       0.00     0.08
 18   9.3739      0.00     0.01       0.00    -0.15
 19   9.3739      0.00     0.18       0.00    -0.05
 20  10.1274      0.00     0.14       0.00     0.06
 21  10.1274      0.00    -0.14       0.00    -0.07
 22  10.1275      0.00     0.20       0.00    -0.09
 23  10.1275      0.00     0.18       0.00     0.16
 24  10.1275      0.00     0.10       0.00     0.13
 25  10.1275      0.00     0.19       0.00     0.05
 26  10.1275      0.00     0.18       0.00    -0.11
 27  10.1276      0.00    -0.13       0.00    -0.14
 28  11.0393      0.00     0.18       0.00    -0.03
 29  11.0393      0.00     0.13       0.00     0.02
 30  11.0394      0.00     0.21       0.00    -0.10
 31  11.0394      0.00     0.10       0.00    -0.07
 32  11.4190      0.00    -0.00       0.00    -0.10
 33  11.4190      0.00     0.24       0.00    -0.19
 34  11.4190      0.00    -0.07       0.00     0.07
 35  11.4190      0.00    -0.05       0.00    -0.15
 36  11.8361      0.00    -0.16       0.00    -0.25
 37  11.8361      0.00    -0.20       0.00    -0.30
 38  11.8361      0.00    -0.10       0.00    -0.08
 39  12.0628      0.00    -0.04       0.00    -0.08
 40  12.0628      0.00     0.01       0.00     0.18
 41  12.0629      0.00    -0.10       0.00     0.07
 42  12.0629      0.00    -0.05       0.00     0.05
 43  12.2380      0.00     0.19       0.00     0.10
 44  12.2381      0.00     0.11       0.00    -0.01
 45  12.2381      0.00     0.15       0.00    -0.03
 46  12.9447      0.00     0.11       0.00     0.56
 47  12.9448      0.00     0.47       0.00    -0.23
 48  12.9448      0.00     0.22       0.00    -0.00
 49  12.9448      0.00     0.03       0.00    -0.32
 50  13.1035      0.00     0.03       0.00    -0.01
 51  13.1036      0.00     0.04       0.00    -0.05
 52  13.1036      0.00     0.09       0.00    -0.00
 53  13.1036      0.00    -0.07       0.00     0.10
 54  13.1768      0.00     0.02       0.00     0.29
 55  13.1768      0.00     0.33       0.00     0.30
 56  13.1769      0.00     0.52       0.00    -0.21
 57  13.1769      0.00     0.11       0.00    -0.38
 58  13.1795      0.00     0.12       0.00    -0.43
 59  13.1796      0.00     0.05       0.00     0.05
 60  13.1796      0.00     0.12       0.00     0.12
 61  13.1796      0.00     0.01       0.00    -0.06
 62  13.1878      0.00    -0.18       0.00     0.23
 63  13.1878      0.00     0.38       0.00    -0.05
 64  13.1878      0.00    -0.32       0.00     0.16
 65  13.1905      0.00     0.02       0.00    -0.06
 66  13.1905      0.00     0.09       0.00     0.05
 67  13.1905      0.00     0.03       0.00     0.09
 68  13.1906      0.00    -0.07       0.00     0.12
 69  13.2673      0.00    -0.09       0.00     0.06
 70  13.2673      0.00    -0.12       0.00     0.03
 71  13.2674      0.00    -0.17       0.00     0.05
 72  13.2674      0.00    -0.21       0.00     0.04
 73  13.2865      0.00    -0.04       0.00    -0.03
 74  13.2865      0.00    -0.24       0.00    -0.05
 75  13.2866      0.00    -0.13       0.00     0.12
 76  13.2866      0.00    -0.21       0.00    -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.

469421    quality flag:3

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

axisobj        39.513    39.513    39.513
ecceobj         0.106     0.106     0.106
incobj         18.081    18.081    18.081
qmin           33.568    33.568    33.568
qmax           45.794    45.793    45.795
amean          39.458    39.458    39.458
amin           39.060    39.060    39.060
amax           39.891    39.891    39.891
emean           0.123     0.123     0.123
emin            0.099     0.099     0.099
emax            0.149     0.149     0.149
imean          16.261    16.261    16.261
imin           15.685    15.685    15.685
imax           16.884    16.884    16.883
excite_mean     0.306     0.306     0.306
fracstop        1.000     1.000     1.000
cjmean          2.945     2.945     2.945

libcent 0       179.5     179.5     179.6
libamp  0        79.4      79.4      79.5
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       176.8     177.1     176.9
kozaiamp        180.0     180.0     179.9