Orbit Fit and Astrometric record for 470309

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: 470309    
# Created Sun Oct 22 01:36:51 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  108 observations of  108
# Arc:   8.22y
# First observation: 2007/05/10
#  Last observation: 2015/07/31
# Chi-squared of fit:    83.50 DOF:  210 RMS:  0.16
# Min/Max residuals:    -0.48    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.761045E-05  4.831612E-02  1.748586E-05  4.773331E-02  4.363238E-02 -7.013555E-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
   -5.252782 -131.502114   -0.009365   -0.091968   -1.000926  2454230.762094
# Heliocentric elements and errors
Epoch:              2454230.5000  =  2007/05/10
Mean Anomaly:          354.84303 +/-     0.000
Argument of Peri:       10.24381 +/-     0.000
Long of Asc Node:      233.60573 +/-     0.000
Inclination:            44.82970 +/-     0.000
Eccentricity:         0.49498722 +/-    0.0000
Semi-Major Axis:     46.65690428 +/-    0.0000
Time of Perihelion: 2455897.9953 +/-       0.0
Perihelion:          23.56233286 +/-    0.0000
Aphelion:            69.75147571 +/-    0.0000
Period (y)              318.7000 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.78367753 +/-    0.0000
Ecliptic Y          -17.85632631 +/-    0.0000
Ecliptic Z           -2.09777118 +/-    0.0000
Ecliptic XDOT         0.00238522 +/-    0.0000
Ecliptic YDOT        -0.00188904 +/-    0.0000
Ecliptic ZDOT         0.00302280 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   23.92438526 +/-    0.0000
Geocenter to KBO     22.91883919 +/-    0.0000
# Hcoef:  7.27

The following table shows the complete astrometric record for 470309. 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 (470309) followed by the observatory code and reference code for the source of the astrometry.

2007 05  10.26134  14 57 53.44   -22 22 26.7   20.7R 470309    675  Cv1556      
2007 05  10.30768  14 57 53.06   -22 22 23.8   20.9R 470309    675  Cv1556      
2007 05  11.25263  14 57 45.34   -22 21 25.8   21.0R 470309    675  Cv1556      
2007 05  11.29906  14 57 44.97   -22 21 22.5   21.2R 470309    675  Cv1556      
2007 06  08.17901  14 54 14.35   -21 52 00.5         470309    675  Cv1556      
2007 06  08.28422  14 54 13.65   -21 51 54.0         470309    675  Cv1556      
2007 07  03.24944  14 52 06.05   -21 27 38.7         470309    675  Cv1556      
2007 07  04.17813  14 52 02.88   -21 26 49.6         470309    675  Cv1556      
2007 07  04.23228  14 52 02.71   -21 26 47.2         470309    675  Cv1556      
2007 07  05.17815  14 51 59.68   -21 25 57.4         470309    675  Cv1556      
2008 02  13.32221  15 18 54.59   -21 25 47.6         470309    304  Cx9520      
2008 02  14.31123  15 18 56.59   -21 25 36.3         470309    304  Cx9520      
2008 02  14.31575  15 18 56.60   -21 25 36.2         470309    304  Cx9520      
2008 06  21.18237  15 07 29.50   -19 47 33.0         470309    675  Cz1692      
2008 06  21.23613  15 07 29.20   -19 47 30.0         470309    675  Cz1692      
2009 05  14.21024  15 26 37.18   -18 26 12.9         470309    675  C~070k      
2009 05  14.26562  15 26 36.70   -18 26 09.4         470309    675  C~070k      
2009 05  15.20785  15 26 29.03   -18 25 14.8         470309    675  C~070k      
2009 05  15.26146  15 26 28.58   -18 25 11.8         470309    675  C~070k      
2011 01  30.61594  15 58 55.696  -15 33 01.32  21.1w 470309    F51  C~1vVi      
2011 01  30.62062  15 58 55.719  -15 33 01.20  21.1w 470309    F51  C~1vVi      
2011 01  30.62607  15 58 55.754  -15 33 01.08  21.1w 470309    F51  C~1vVi      
2011 01  30.63074  15 58 55.780  -15 33 00.92  21.0w 470309    F51  C~1vVi      
2011 05  21.42109  15 54 05.928  -14 08 08.21  20.5i 470309    F51  C~1vVi      
2011 05  21.43759  15 54 05.767  -14 08 07.37  20.3i 470309    F51  C~1vVi      
2011 05  21.45597  15 54 05.615  -14 08 06.29  20.6r 470309    F51  C~1vVi      
2011 05  21.47118  15 54 05.502  -14 08 05.65  20.4r 470309    F51  C~1vVi      
2011 06  06.38488  15 51 57.653  -13 54 29.26  20.8w 470309    F51  C~1vVi      
2011 06  06.39939  15 51 57.534  -13 54 28.63  20.8w 470309    F51  C~1vVi      
2011 06  06.41383  15 51 57.422  -13 54 27.75  20.9w 470309    F51  C~1vVi      
2011 06  06.42826  15 51 57.304  -13 54 27.12  20.7w 470309    F51  C~1vVi      
2012 05  10.50628  16 09 16.414  -12 06 07.46  20.4i 470309    F51  C~0gaC      
2012 05  10.51687  16 09 16.292  -12 06 06.66  20.4i 470309    F51  C~0gaC      
2012 06  13.33798  16 04 46.644  -11 38 20.76  20.7w 470309    F51  C~1vVi      
2012 06  13.35273  16 04 46.530  -11 38 20.17  20.8w 470309    F51  C~1vVi      
2012 06  13.36747  16 04 46.415  -11 38 19.55  20.8w 470309    F51  C~1vVi      
2012 06  13.38223  16 04 46.308  -11 38 18.99  20.8w 470309    F51  C~1vVi      
2013 05  15.49971  16 22 12.235  -09 48 18.77  20.8w 470309    F51  C~1vVi      
2013 05  15.51300  16 22 12.127  -09 48 18.01  20.8w 470309    F51  C~1vVi      
2013 05  15.52626  16 22 12.023  -09 48 17.33  20.8w 470309    F51  C~1vVi      
2013 05  15.53954  16 22 11.914  -09 48 16.65  21.0w 470309    F51  C~1vVi      
2014 05  05.45858  16 36 46.528  -07 43 16.42  21.0w 470309    F51  C~1vVi      
2014 05  05.47145  16 36 46.432  -07 43 15.71  20.8w 470309    F51  C~1vVi      
2014 05  05.48434  16 36 46.337  -07 43 14.83  21.0w 470309    F51  C~1vVi      
2014 05  05.49720  16 36 46.253  -07 43 13.81  21.2w 470309    F51  C~1vVi      
2014 05  07.46029  16 36 32.303  -07 41 20.48  20.8w 470309    F51  C~1vVi      
2014 05  07.47251  16 36 32.217  -07 41 19.74  20.7w 470309    F51  C~1vVi      
2014 05  07.48475  16 36 32.131  -07 41 19.06  20.8w 470309    F51  C~1vVi      
2014 06  02.36214  16 33 10.150  -07 19 19.72  20.5w 470309    F51  C~1vVi      
2014 06  02.37335  16 33 10.043  -07 19 19.20  20.7w 470309    F51  C~1vVi      
2014 06  02.38461  16 33 09.948  -07 19 18.66  20.8w 470309    F51  C~1vVi      
2014 06  02.39588  16 33 09.854  -07 19 18.13  20.9w 470309    F51  C~1vVi      
2014 06  06.37355  16 32 37.786  -07 16 31.32  20.4i 470309    F51  C~1vVi      
2014 06  06.38619  16 32 37.683  -07 16 30.75  20.5i 470309    F51  C~1vVi      
2014 06  06.39885  16 32 37.581  -07 16 30.26  20.5i 470309    F51  C~1vVi      
2014 06  06.41154  16 32 37.474  -07 16 29.65  20.7i 470309    F51  C~1vVi      
2014 06  16.41827  16 31 18.606  -07 10 19.35  20.8r 470309    F51  C~1vVi      
2014 06  16.42991  16 31 18.509  -07 10 19.08  20.9r 470309    F51  C~1vVi      
2014 06  16.44128  16 31 18.424  -07 10 18.37  20.7r 470309    F51  C~1vVi      
2014 06  16.45298  16 31 18.337  -07 10 18.26  20.8r 470309    F51  C~1vVi      
2014 06  22.38821  16 30 33.741  -07 07 13.62  21.0w 470309    F51  C~1vVi      
2014 06  22.39975  16 30 33.653  -07 07 13.22  21.4w 470309    F51  C~1vVi      
2014 06  22.41127  16 30 33.561  -07 07 13.14  21.1w 470309    F51  C~1vVi      
2014 06  22.42279  16 30 33.478  -07 07 12.50  21.3w 470309    F51  C~1vVi      
2014 06  30.37414  16 29 37.525  -07 03 47.56  20.9w 470309    F51  C~1vVi      
2014 06  30.38553  16 29 37.447  -07 03 47.34  21.0w 470309    F51  C~1vVi      
2014 06  30.39693  16 29 37.368  -07 03 47.08  21.0w 470309    F51  C~1vVi      
2014 06  30.40827  16 29 37.291  -07 03 46.79  20.9w 470309    F51  C~1vVi      
2014 07  29.31202  16 27 10.087  -06 58 07.67  20.9w 470309    F51  C~1vVi      
2014 07  29.32412  16 27 10.042  -06 58 07.67  21.0w 470309    F51  C~1vVi      
2014 07  29.33618  16 27 10.010  -06 58 07.54  21.1w 470309    F51  C~1vVi      
2014 07  29.34827  16 27 09.968  -06 58 07.56  20.9w 470309    F51  C~1vVi      
2014 07  30.33557  16 27 06.883  -06 58 06.67  21.0w 470309    F51  C~1vVi      
2014 07  30.34752  16 27 06.840  -06 58 06.73  20.9w 470309    F51  C~1vVi      
2014 07  30.35947  16 27 06.805  -06 58 06.61  20.9w 470309    F51  C~1vVi      
2014 07  30.37143  16 27 06.765  -06 58 06.64  20.9w 470309    F51  C~1vVi      
2014 08  17.25782  16 26 36.988  -06 59 36.94  21.1w 470309    F51  C~1vVi      
2014 08  17.26993  16 26 36.977  -06 59 37.06  21.2w 470309    F51  C~1vVi      
2014 08  17.28201  16 26 36.972  -06 59 36.97  21.2w 470309    F51  C~1vVi      
2014 08  17.29404  16 26 36.971  -06 59 37.34  21.1w 470309    F51  C~1vVi      
2014 08  18.25516  16 26 36.822  -06 59 47.41  21.2w 470309    F51  C~1vVi      
2014 08  18.26727  16 26 36.828  -06 59 47.30  21.3w 470309    F51  C~1vVi      
2014 08  18.27940  16 26 36.825  -06 59 47.50  21.1w 470309    F51  C~1vVi      
2014 08  18.29144  16 26 36.822  -06 59 47.58  21.2w 470309    F51  C~1vVi      
2014 08  19.25417  16 26 36.835  -06 59 58.17  21.0w 470309    F51  C~1vVi      
2014 08  19.26615  16 26 36.832  -06 59 58.35  21.1w 470309    F51  C~1vVi      
2014 08  19.27816  16 26 36.832  -06 59 58.45  21.2w 470309    F51  C~1vVi      
2014 08  19.29018  16 26 36.829  -06 59 58.62  21.1w 470309    F51  C~1vVi      
2015 03  28.59134  16 52 37.782  -06 10 12.40  21.5w 470309    F51  C~1PEJ      
2015 03  28.61345  16 52 37.724  -06 10 11.01  21.5w 470309    F51  C~1PEJ      
2015 03  28.62443  16 52 37.690  -06 10 09.62  21.6w 470309    F51  C~1PEJ      
2015 05  19.44282  16 48 08.010  -05 15 41.51  21.0w 470309    F51  C~1vVi      
2015 05  19.45347  16 48 07.927  -05 15 40.87  21.1w 470309    F51  C~1vVi      
2015 05  19.46421  16 48 07.846  -05 15 40.29  20.9w 470309    F51  C~1vVi      
2015 06  07.43423  16 45 37.006  -05 01 18.35  20.6i 470309    F51  C~1vVi      
2015 06  07.44584  16 45 36.914  -05 01 17.81  20.5i 470309    F51  C~1vVi      
2015 06  07.45744  16 45 36.806  -05 01 17.46  20.5i 470309    F51  C~1vVi      
2015 06  07.46906  16 45 36.723  -05 01 16.91  20.5i 470309    F51  C~1vVi      
2015 07  06.29558  16 42 02.207  -04 48 34.60  20.8w 470309    F51  C~1vVi      
2015 07  06.31642  16 42 02.072  -04 48 34.30  21.0w 470309    F51  C~1vVi      
2015 07  06.32684  16 42 02.005  -04 48 34.21  21.0w 470309    F51  C~1vVi      
2015 07  07.27563  16 41 55.936  -04 48 20.85  21.0w 470309    F51  C~1vVi      
2015 07  07.28629  16 41 55.870  -04 48 20.75  21.0w 470309    F51  C~1vVj      
2015 07  07.29698  16 41 55.801  -04 48 20.64  21.0w 470309    F51  C~1vVj      
2015 07  07.30768  16 41 55.729  -04 48 20.43  20.9w 470309    F51  C~1vVj      
2015 07  31.27568  16 39 56.536  -04 46 45.49  20.8i 470309    F51  C~1vVj      
2015 07  31.28682  16 39 56.485  -04 46 45.42  20.7i 470309    F51  C~1vVj      
2015 07  31.29776  16 39 56.448  -04 46 45.72  20.6i 470309    F51  C~1vVj      

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    -0.15       0.00    -0.21
  2   0.0001      0.00     0.13       0.00    -0.03
  3   0.0027      0.00    -0.28       0.00    -0.48
  4   0.0028      0.00    -0.06       0.00    -0.05
  5   0.0792      0.00     0.36       0.00     0.31
  6   0.0795      0.00     0.46       0.00     0.25
  7   0.1478      0.00     0.25       0.00    -0.16
  8   0.1504      0.00    -0.36       0.00     0.06
  9   0.1505      0.00    -0.11       0.00    -0.38
 10   0.1531      0.00     0.20       0.00     0.14
 11   0.7640      0.00    -0.40       0.00     0.07
 12   0.7667      0.00    -0.38       0.00     0.07
 13   0.7667      0.00    -0.35       0.00     0.12
 14   1.1168      0.00     0.07       0.00    -0.06
 15   1.1170      0.00     0.11       0.00     0.05
 16   2.0122      0.00     0.44       0.00    -0.27
 17   2.0123      0.00     0.13       0.00     0.03
 18   2.0149      0.00     0.46       0.00    -0.22
 19   2.0151      0.00     0.38       0.00    -0.32
 20   3.7272      0.00     0.01       0.00    -0.05
 21   3.7272      0.00    -0.06       0.00    -0.02
 22   3.7272      0.00    -0.02       0.00    -0.01
 23   3.7272      0.00    -0.04       0.00     0.05
 24   4.0306      0.00     0.37       0.00     0.05
 25   4.0306      0.00     0.02       0.00     0.01
 26   4.0306      0.00     0.03       0.00     0.10
 27   4.0307      0.00     0.23       0.00    -0.08
 28   4.0743      0.00     0.16       0.00    -0.03
 29   4.0743      0.00     0.10       0.00    -0.10
 30   4.0743      0.00     0.13       0.00     0.08
 31   4.0744      0.00     0.08       0.00     0.01
 32   5.0027      0.00     0.33       0.00    -0.28
 33   5.0028      0.00    -0.24       0.00    -0.07
 34   5.0954      0.00     0.06       0.00     0.02
 35   5.0954      0.00     0.04       0.00     0.01
 36   5.0954      0.00     0.01       0.00     0.02
 37   5.0955      0.00     0.11       0.00    -0.03
 38   6.0157      0.00     0.03       0.00    -0.09
 39   6.0157      0.00     0.01       0.00    -0.04
 40   6.0158      0.00     0.04       0.00    -0.08
 41   6.0158      0.00     0.00       0.00    -0.11
 42   6.9875      0.00     0.16       0.00    -0.01
 43   6.9876      0.00     0.10       0.00    -0.05
 44   6.9876      0.00     0.06       0.00     0.07
 45   6.9876      0.00     0.19       0.00     0.34
 46   6.9930      0.00     0.05       0.00    -0.06
 47   6.9930      0.00     0.10       0.00    -0.02
 48   6.9931      0.00     0.16       0.00    -0.04
 49   7.0639      0.00     0.42       0.00    -0.14
 50   7.0640      0.00     0.20       0.00    -0.10
 51   7.0640      0.00     0.17       0.00    -0.05
 52   7.0640      0.00     0.15       0.00    -0.01
 53   7.0749      0.00     0.13       0.00    -0.09
 54   7.0749      0.00     0.13       0.00    -0.03
 55   7.0750      0.00     0.16       0.00    -0.05
 56   7.0750      0.00     0.11       0.00     0.04
 57   7.1024      0.00    -0.05       0.00     0.02
 58   7.1024      0.00    -0.14       0.00    -0.10
 59   7.1025      0.00    -0.08       0.00     0.23
 60   7.1025      0.00    -0.01       0.00    -0.05
 61   7.1188      0.00     0.18       0.00    -0.10
 62   7.1188      0.00     0.15       0.00    -0.03
 63   7.1188      0.00     0.07       0.00    -0.28
 64   7.1189      0.00     0.11       0.00     0.02
 65   7.1406      0.00     0.01       0.00    -0.03
 66   7.1407      0.00     0.01       0.00    -0.07
 67   7.1407      0.00     0.00       0.00    -0.07
 68   7.1407      0.00     0.01       0.00    -0.04
 69   7.2199      0.00     0.10       0.00    -0.12
 70   7.2199      0.00     0.04       0.00    -0.14
 71   7.2199      0.00     0.16       0.00    -0.02
 72   7.2200      0.00     0.13       0.00    -0.06
 73   7.2227      0.00     0.14       0.00    -0.04
 74   7.2227      0.00     0.07       0.00    -0.11
 75   7.2227      0.00     0.11       0.00     0.01
 76   7.2228      0.00     0.08       0.00    -0.03
 77   7.2717      0.00    -0.07       0.00    -0.01
 78   7.2718      0.00    -0.17       0.00    -0.01
 79   7.2718      0.00    -0.18       0.00     0.20
 80   7.2718      0.00    -0.13       0.00    -0.05
 81   7.2745      0.00    -0.16       0.00    -0.07
 82   7.2745      0.00    -0.03       0.00     0.17
 83   7.2745      0.00    -0.04       0.00     0.10
 84   7.2746      0.00    -0.04       0.00     0.14
 85   7.2772      0.00    -0.00       0.00     0.11
 86   7.2772      0.00    -0.04       0.00     0.06
 87   7.2773      0.00    -0.03       0.00     0.10
 88   7.2773      0.00    -0.07       0.00     0.06
 89   7.8832      0.00     0.37       0.00    -0.19
 90   7.8832      0.00     0.12       0.00    -0.30
 91   7.8833      0.00    -0.08       0.00     0.34
 92   8.0251      0.00     0.11       0.00    -0.20
 93   8.0252      0.00     0.12       0.00    -0.11
 94   8.0252      0.00     0.16       0.00    -0.09
 95   8.0771      0.00     0.09       0.00    -0.12
 96   8.0772      0.00     0.14       0.00    -0.03
 97   8.0772      0.00    -0.06       0.00    -0.13
 98   8.0772      0.00     0.12       0.00    -0.02
 99   8.1562      0.00    -0.01       0.00     0.02
100   8.1562      0.00     0.03       0.00     0.02
101   8.1562      0.00     0.05       0.00    -0.04
102   8.1588      0.00     0.01       0.00     0.09
103   8.1589      0.00     0.06       0.00     0.04
104   8.1589      0.00     0.07       0.00     0.01
105   8.1589      0.00     0.03       0.00     0.07
106   8.2245      0.00     0.28       0.00     0.01
107   8.2246      0.00     0.11       0.00     0.14
108   8.2246      0.00     0.14       0.00    -0.11

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.

470309    quality flag:3

Type:       CENTAURS  CENTAURS  CENTAURS

axisobj        45.888    45.888    45.889
ecceobj         0.487     0.487     0.487
incobj         44.969    44.969    44.969
qmin           21.554    22.254    20.833
qmax           71.864    70.791    74.608
amean          46.093    45.868    46.444
amin           45.123    45.063    45.294
amax           47.095    46.790    47.887
emean           0.492     0.484     0.507
emin            0.456     0.452     0.463
emax            0.533     0.516     0.558
imean          45.821    46.138    45.203
imin           44.253    44.887    43.303
imax           46.964    47.259    46.935
excite_mean     0.870     0.868     0.873
fracstop        1.000     1.000     1.000
cjmean          2.153     2.153     2.154

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       163.7     165.9     202.9
kozaiamp        180.0     180.0     180.0