Orbit Fit and Astrometric record for 470443

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: 470443    
# Created Sat Oct 21 01:36:51 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   65 observations of   65
# Arc:   8.15y
# First observation: 2007/12/13
#  Last observation: 2016/02/07
# Chi-squared of fit:   265.96 DOF:  124 RMS:  0.36
# Min/Max residuals:    -2.06    0.97
# Exact a, adot, b, bdot, g, gdot:
  1.690644E-05  1.881310E-02  4.326943E-06  7.761515E-03  2.210074E-02  1.259017E-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
    4.822527   64.535241   -0.276265    0.079954   -0.946727  2454447.742084
# Heliocentric elements and errors
Epoch:              2454448.5000  =  2007/12/14
Mean Anomaly:           93.27858 +/-     0.000
Argument of Peri:      271.21114 +/-     0.000
Long of Asc Node:       53.60638 +/-     0.000
Inclination:            22.91849 +/-     0.000
Eccentricity:         0.06803273 +/-    0.0000
Semi-Major Axis:     45.80287956 +/-    0.0000
Time of Perihelion: 2425111.4089 +/-       0.0
Perihelion:          42.68678455 +/-    0.0000
Aphelion:            48.91897457 +/-    0.0000
Period (y)              309.9898 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           19.54359016 +/-    0.0000
Ecliptic Y           41.67889270 +/-    0.0000
Ecliptic Z            3.80411599 +/-    0.0000
Ecliptic XDOT        -0.00206574 +/-    0.0000
Ecliptic YDOT         0.00106857 +/-    0.0000
Ecliptic ZDOT         0.00097110 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.19035847 +/-    0.0000
Geocenter to KBO     45.24734848 +/-    0.0000
# Hcoef:  4.75

The following table shows the complete astrometric record for 470443. 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 (470443) followed by the observatory code and reference code for the source of the astrometry.

2007 12  13.24133  04 06 21.12   +25 47 05.7   21.2R 470443    675  Cx7660      
2007 12  13.28509  04 06 20.93   +25 47 05.5   21.3R 470443    675  Cx7660      
2007 12  14.24781  04 06 16.25   +25 46 56.4   21.3R 470443    675  Cx7660      
2007 12  14.29151  04 06 16.10   +25 46 55.8   21.3R 470443    675  Cx7660      
2007 12  30.13671  04 05 05.68   +25 44 13.7         470443    675  Cx7660      
2007 12  30.19125  04 05 05.51   +25 44 13.0         470443    675  Cx7660      
2007 12  30.24506  04 05 05.27   +25 44 12.6         470443    675  Cx7660      
2008 01  10.09723  04 04 25.26   +25 42 28.0         470443    675  Cx7660      
2008 01  10.15189  04 04 25.06   +25 42 27.6         470443    675  Cx7660      
2008 02  01.11721  04 03 32.33   +25 39 42.1         470443    675  Cx7660      
2008 02  01.21458  04 03 32.19   +25 39 41.4         470443    675  Cx7660      
2008 10  25.48037  04 14 34.51   +26 30 24.7         470443    695  C~01NQ      
2008 10  25.49934  04 14 34.43   +26 30 24.6         470443    695  C~01NQ      
2008 10  27.46652  04 14 26.12   +26 30 20.7         470443    695  C~01NQ      
2008 10  27.49032  04 14 26.03   +26 30 20.8         470443    695  C~01NQ      
2008 11  17.24287  04 12 48.55   +26 28 47.7         470443    675  C~01NQ      
2008 11  17.29708  04 12 48.24   +26 28 46.9         470443    675  C~01NQ      
2009 02  24.16734  04 07 39.1    +26 16 15.2         470443    675 YC~05YK      
2009 10  18.61277  04 19 25.05   +27 07 21.8         470443    568  C~0AbP      
2009 10  18.63126  04 19 24.97   +27 07 21.8         470443    568  C~0AbP      
2011 10  25.41927  04 27 54.001  +28 19 34.13  21.2w 470443    F51  C~1vVn      
2011 10  25.43380  04 27 53.942  +28 19 34.18  21.3w 470443    F51  C~1vVn      
2011 10  25.44829  04 27 53.878  +28 19 34.22  21.3w 470443    F51  C~1vVn      
2011 10  25.46274  04 27 53.824  +28 19 34.27  21.2w 470443    F51  C~1vVn      
2011 12  01.204795 04 24 58.41   +28 17 44.1   21.7V 470443    H21  C~0b3K      
2011 12  01.224046 04 24 58.32   +28 17 44.1   21.4V 470443    H21  C~0b3K      
2011 12  01.243702 04 24 58.21   +28 17 43.9   21.5V 470443    H21  C~0b3K      
2011 12  01.260305 04 24 58.12   +28 17 43.8   21.5V 470443    H21  C~0b3K      
2013 12  25.28852  04 31 57.748  +29 25 17.37  21.2w 470443    F51  C~1vVn      
2013 12  25.30167  04 31 57.685  +29 25 17.37  21.3w 470443    F51  C~1vVn      
2013 12  25.31490  04 31 57.627  +29 25 17.13  21.1w 470443    F51  C~1vVn      
2013 12  25.32800  04 31 57.564  +29 25 17.02  21.1w 470443    F51  C~1vVn      
2014 11  27.35230  04 38 56.479  +30 02 58.21  21.1w 470443    F51  C~1vVn      
2014 11  27.37995  04 38 56.335  +30 02 57.96  21.1w 470443    F51  C~1vVn      
2014 11  27.39377  04 38 56.260  +30 02 57.93  21.1w 470443    F51  C~1vVn      
2014 12  01.31930  04 38 35.702  +30 02 40.55  20.7i 470443    F51  C~1vVn      
2014 12  01.33128  04 38 35.636  +30 02 40.43  20.5i 470443    F51  C~1vVn      
2014 12  01.34321  04 38 35.576  +30 02 40.41  20.6i 470443    F51  C~1vVn      
2014 12  01.35519  04 38 35.517  +30 02 40.38  20.6i 470443    F51  C~1vVn      
2014 12  27.26513  04 36 23.627  +29 59 34.63  20.8i 470443    F51  C~1vVn      
2014 12  27.27639  04 36 23.565  +29 59 34.53  20.8i 470443    F51  C~1vVn      
2014 12  27.28763  04 36 23.538  +29 59 34.53  20.8i 470443    F51  C~1vVn      
2014 12  27.29889  04 36 23.468  +29 59 34.14  20.8i 470443    F51  C~1vVn      
2014 12  29.40761  04 36 13.633  +29 59 15.02  20.7i 470443    F51  C~1vVn      
2014 12  29.41911  04 36 13.590  +29 59 14.86  21.0i 470443    F51  C~1vVn      
2014 12  29.43058  04 36 13.532  +29 59 14.77  20.9i 470443    F51  C~1vVn      
2014 12  29.44212  04 36 13.480  +29 59 14.65  20.8i 470443    F51  C~1vVn      
2015 01  23.34048  04 34 38.052  +29 55 11.20  21.2w 470443    F51  C~1vVn      
2015 01  23.34181  04 34 38.053  +29 55 11.20  21.2w 470443    F51  C~1vVn      
2015 01  23.35305  04 34 38.017  +29 55 11.02  21.3w 470443    F51  C~1vVn      
2015 01  23.35438  04 34 38.013  +29 55 11.02  21.3w 470443    F51  C~1vVn      
2015 01  23.36559  04 34 37.983  +29 55 10.96  21.3w 470443    F51  C~1vVn      
2015 01  23.36691  04 34 37.982  +29 55 10.95  21.4w 470443    F51  C~1vVn      
2015 01  23.37814  04 34 37.944  +29 55 10.73  21.2w 470443    F51  C~1vVn      
2015 01  23.37946  04 34 37.933  +29 55 10.77  21.3w 470443    F51  C~1vVn      
2015 01  25.32434  04 34 32.456  +29 54 51.74  20.8i 470443    F51  C~1vVn      
2015 01  25.33691  04 34 32.441  +29 54 51.61  20.9i 470443    F51  C~1vVn      
2015 01  25.35042  04 34 32.384  +29 54 51.40  20.7i 470443    F51  C~1vVn      
2015 01  25.36287  04 34 32.338  +29 54 51.47  20.8i 470443    F51  C~1vVn      
2016 02  06.05830  04 38 39.07   +30 26 54.4   20.6R 470443    W67  C~1oYA      
2016 02  06.12611  04 38 38.95   +30 26 53.9   20.6R 470443    W67  C~1oYA      
2016 02  06.18836  04 38 38.84   +30 26 53.2   20.7R 470443    W67  C~1oYA      
2016 02  07.01626  04 38 37.38   +30 26 45.6   20.4R 470443    W67  C~1oYA      
2016 02  07.05547  04 38 37.32   +30 26 45.1   20.8R 470443    W67  C~1oYA      
2016 02  07.13498  04 38 37.18   +30 26 44.4   20.3R 470443    W67  C~1oYA      

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    -0.07       0.00    -0.39
  2   0.0001      0.00    -0.41       0.00     0.36
  3   0.0028      0.00    -1.35       0.00     0.97
  4   0.0029      0.00    -0.42       0.00     0.81
  5   0.0463      0.00    -0.19       0.00    -0.10
  6   0.0464      0.00     0.63       0.00    -0.26
  7   0.0466      0.00     0.35       0.00    -0.13
  8   0.0763      0.00     0.33       0.00    -0.16
  9   0.0764      0.00     0.10       0.00    -0.07
 10   0.1366      0.00     0.32       0.00     0.36
 11   0.1368      0.00     0.40       0.00     0.21
 12   0.8686      0.00     0.47       0.00     0.36
 13   0.8686      0.00     0.46       0.00     0.29
 14   0.8740      0.00    -0.06       0.00     0.16
 15   0.8741      0.00     0.13       0.00     0.32
 16   0.9309      0.00     0.31       0.00     0.22
 17   0.9310      0.00    -0.21       0.00    -0.24
 18   1.2017      0.00    -0.05       0.00     0.38
 19   1.8491      0.00     0.33       0.00    -2.04
 20   1.8491      0.00     0.17       0.00    -2.06
 21   3.8663      0.00     0.10       0.00    -0.17
 22   3.8664      0.00     0.10       0.00    -0.15
 23   3.8664      0.00     0.02       0.00    -0.13
 24   3.8665      0.00     0.09       0.00    -0.11
 25   3.9670      0.00     0.28       0.00    -0.07
 26   3.9671      0.00     0.44       0.00     0.06
 27   3.9672      0.00     0.34       0.00    -0.01
 28   3.9672      0.00     0.29       0.00     0.01
 29   6.0344      0.00    -0.11       0.00    -0.03
 30   6.0344      0.00    -0.11       0.00     0.09
 31   6.0344      0.00    -0.03       0.00    -0.03
 32   6.0345      0.00    -0.03       0.00    -0.03
 33   6.9572      0.00    -0.02       0.00     0.06
 34   6.9573      0.00     0.01       0.00    -0.09
 35   6.9573      0.00    -0.01       0.00    -0.07
 36   6.9680      0.00     0.06       0.00     0.02
 37   6.9681      0.00     0.02       0.00    -0.04
 38   6.9681      0.00     0.08       0.00    -0.01
 39   6.9681      0.00     0.15       0.00     0.01
 40   7.0391      0.00    -0.09       0.00     0.13
 41   7.0391      0.00    -0.21       0.00     0.13
 42   7.0391      0.00     0.19       0.00     0.23
 43   7.0392      0.00    -0.05       0.00    -0.06
 44   7.0449      0.00    -0.05       0.00     0.04
 45   7.0450      0.00     0.12       0.00    -0.01
 46   7.0450      0.00     0.05       0.00     0.01
 47   7.0450      0.00     0.09       0.00    -0.01
 48   7.1132      0.00     0.04       0.00     0.12
 49   7.1132      0.00     0.12       0.00     0.13
 50   7.1132      0.00     0.08       0.00     0.07
 51   7.1132      0.00     0.08       0.00     0.08
 52   7.1133      0.00     0.13       0.00     0.13
 53   7.1133      0.00     0.18       0.00     0.14
 54   7.1133      0.00     0.11       0.00     0.03
 55   7.1133      0.00     0.00       0.00     0.08
 56   7.1186      0.00     0.13       0.00     0.03
 57   7.1187      0.00     0.44       0.00     0.02
 58   7.1187      0.00     0.16       0.00    -0.05
 59   7.1187      0.00    -0.01       0.00     0.14
 60   8.1501      0.00    -0.12       0.00     0.03
 61   8.1503      0.00    -0.03       0.00     0.17
 62   8.1504      0.00     0.03       0.00     0.06
 63   8.1527      0.00    -0.33       0.00     0.04
 64   8.1528      0.00    -0.19       0.00    -0.10
 65   8.1530      0.00    -0.18       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.

470443    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.325    46.325    46.325
ecceobj         0.069     0.069     0.069
incobj         22.798    22.798    22.798
qmin           42.409    42.407    42.395
qmax           49.835    49.846    49.908
amean          46.015    46.015    46.015
amin           45.645    45.644    45.657
amax           46.390    46.391    46.403
emean           0.064     0.064     0.064
emin            0.055     0.055     0.054
emax            0.075     0.075     0.076
imean          21.840    21.840    21.840
imin           21.604    21.603    21.602
imax           22.113    22.113    22.113
excite_mean     0.378     0.378     0.378
fracstop        1.000     1.000     1.000
cjmean          2.945     2.945     2.945

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       175.2     175.3     175.1
kozaiamp        180.0     180.0     179.9