Orbit Fit and Astrometric record for 470308

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: 470308    
# Created Sat Oct 21 01:36:50 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  105 observations of  105
# Arc:  31.34y
# First observation: 1984/03/07
#  Last observation: 2015/07/09
# Chi-squared of fit:   186.78 DOF:  204 RMS:  0.24
# Min/Max residuals:    -1.44    1.22
# Exact a, adot, b, bdot, g, gdot:
  1.741534E-05  2.412865E-02 -1.661996E-06 -5.896148E-03  2.533917E-02  8.308748E-04
# 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
   12.461965 -155.858994    0.598813    0.170914   -0.772550  2445767.230047
# Heliocentric elements and errors
Epoch:              2445766.5000  =  1984/03/07
Mean Anomaly:          132.34586 +/-     0.000
Argument of Peri:        2.78471 +/-     0.000
Long of Asc Node:       64.70151 +/-     0.000
Inclination:            18.11977 +/-     0.000
Eccentricity:         0.02404895 +/-    0.0000
Semi-Major Axis:     39.59412129 +/-    0.0000
Time of Perihelion: 2412312.1697 +/-       0.0
Perihelion:          38.64192443 +/-    0.0000
Aphelion:            40.54631816 +/-    0.0000
Period (y)              249.1462 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.13374011 +/-    0.0000
Ecliptic Y          -15.54710725 +/-    0.0000
Ecliptic Z            8.51605225 +/-    0.0000
Ecliptic XDOT         0.00086924 +/-    0.0000
Ecliptic YDOT        -0.00247222 +/-    0.0000
Ecliptic ZDOT        -0.00060287 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.24775775 +/-    0.0000
Geocenter to KBO     39.46459809 +/-    0.0000
# Hcoef:  4.61

The following table shows the complete astrometric record for 470308. 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 (470308) followed by the observatory code and reference code for the source of the astrometry.

1984 03  07.72942  13 47 38.21   +02 14 33.9         470308    260   ~08Uf      
1994 03  09.73961  14 34 00.47   -05 50 44.8   20.0R 470308    260   y3582      
1996 04  18.65115  14 40 46.56   -07 11 55.5   19.6R 470308    260   y3582      
2002 05  19.34334  15 06 50.26   -11 46 00.8   19.9R 470308    644  Cy3582      
2002 05  19.36659  15 06 50.17   -11 46 00.1   20.1R 470308    644  Cy3582      
2002 05  19.36694  15 06 50.17   -11 46 00.2   20.5R 470308    644  Cy3582      
2002 05  19.39692  15 06 50.04   -11 46 00.4   20.5R 470308    644  Cy3582      
2002 06  03.26597  15 05 39.02   -11 42 45.1         470308    644  Cy3582      
2002 06  11.26189  15 05 04.18   -11 41 26.8         470308    644  Cy3582      
2003 05  05.95560  15 12 49.13   -12 35 55.3         470308    246  C~05Fw      
2003 05  05.96324  15 12 49.08   -12 35 54.5         470308    246  C~05Fw      
2007 05  10.36483  15 32 09.40   -15 36 11.6   20.1R 470308    675  C60235      
2007 05  10.40777  15 32 09.16   -15 36 10.4   20.2R 470308    675  C60235      
2007 05  11.24267  15 32 04.93   -15 35 59.2   20.4R 470308    675  C60235      
2007 05  11.37045  15 32 04.23   -15 35 57.0   20.4R 470308    675  C60235      
2007 06  16.33474  15 29 07.97   -15 28 43.3         470308    675  Cv1556      
2007 06  17.19911  15 29 04.26   -15 28 36.9         470308    675  Cv1556      
2007 06  17.25872  15 29 04.01   -15 28 35.0         470308    675  Cv1556      
2007 06  17.31228  15 29 03.78   -15 28 34.7         470308    675  Cv1556      
2007 06  18.19232  15 29 00.06   -15 28 27.3         470308    675  Cv1556      
2007 07  14.21197  15 27 32.85   -15 26 37.7         470308    675  Cv4525      
2007 07  16.17485  15 27 28.37   -15 26 38.5         470308    675  Cv4525      
2008 03  08.41761  15 40 55.29   -16 31 40.7   20.9R 470308    734  Cy2205      
2008 03  11.34177  15 40 51.39   -16 31 26.9   20.7R 470308    734  Cy2205      
2008 03  14.40491  15 40 46.25   -16 31 09.9         470308    675  Cy3582      
2008 03  14.44757  15 40 46.22   -16 31 09.6   21.3R 470308    673  Cy2205      
2008 03  14.46018  15 40 46.20   -16 31 09.2         470308    673  Cy2205      
2008 03  14.46910  15 40 46.17   -16 31 09.1         470308    673  Cy2205      
2008 03  14.48218  15 40 46.14   -16 31 08.8         470308    673  Cy2205      
2008 03  14.50021  15 40 46.07   -16 31 09.8         470308    675  Cy3582      
2008 05  03.36995  15 37 41.77   -16 21 58.4         470308    695  Cz0515      
2008 05  04.35577  15 37 36.83   -16 21 44.8         470308    695  Cz0515      
2008 05  04.35783  15 37 36.82   -16 21 44.7         470308    695  Cz0515      
2011 05  21.42327  15 51 26.295  -18 28 20.59  20.1i 470308    F51  C~1vVi      
2011 05  21.43977  15 51 26.196  -18 28 20.58  20.2i 470308    F51  C~1vVi      
2011 05  21.45798  15 51 26.092  -18 28 20.47  20.5r 470308    F51  C~1vVi      
2011 05  21.47320  15 51 26.021  -18 28 20.30  20.5r 470308    F51  C~1vVi      
2012 05  13.13999  15 57 14.40   -19 12 08.3   20.4R 470308    304  C~0iFS      
2012 05  13.19568  15 57 14.11   -19 12 07.7         470308    304  C~0iFS      
2012 05  13.25183  15 57 13.81   -19 12 07.1         470308    304  C~0iFS      
2012 05  14.07723  15 57 09.53   -19 11 57.8         470308    304  C~0iFS      
2012 05  14.24275  15 57 08.65   -19 11 56.0         470308    304  C~0iFS      
2012 05  14.39524  15 57 07.85   -19 11 54.3         470308    304  C~0iFS      
2012 05  15.04675  15 57 04.46   -19 11 47.0         470308    304  C~0iFS      
2012 05  15.19998  15 57 03.65   -19 11 45.2         470308    304  C~0iFS      
2012 05  15.33909  15 57 02.91   -19 11 43.6         470308    304  C~0iFS      
2012 05  16.03931  15 56 59.24   -19 11 35.6         470308    304  C~0iFS      
2012 05  16.18637  15 56 58.49   -19 11 34.1         470308    304  C~0iFS      
2012 05  16.30850  15 56 57.84   -19 11 32.8         470308    304  C~0iFS      
2013 04  15.51108  16 04 36.863  -19 58 10.62  20.7w 470308    F51  C~1vVi      
2013 04  15.52530  16 04 36.804  -19 58 10.52  20.9w 470308    F51  C~1vVi      
2013 04  15.53960  16 04 36.743  -19 58 10.31  20.8w 470308    F51  C~1vVi      
2013 04  15.55382  16 04 36.687  -19 58 10.21  20.9w 470308    F51  C~1vVi      
2013 05  04.36400  16 03 11.63   -19 55 25.2   18.2K 470308    W91  C~1k21      
2013 05  04.36695  16 03 11.61   -19 55 25.4   19.1J 470308    W91  C~1k21      
2013 05  04.36826  16 03 11.61   -19 55 25.3   18.9J 470308    W91  C~1k21      
2013 05  08.43936  16 02 51.158  -19 54 44.64  20.6w 470308    F51  C~1vVi      
2013 05  08.45344  16 02 51.084  -19 54 44.50  20.7w 470308    F51  C~1vVi      
2013 05  08.46753  16 02 51.008  -19 54 44.33  20.6w 470308    F51  C~1vVi      
2013 05  08.48167  16 02 50.937  -19 54 44.24  20.6w 470308    F51  C~1vVi      
2013 06  04.38070  16 00 29.895  -19 50 03.20  20.7w 470308    F51  C~1vVi      
2013 06  04.39570  16 00 29.808  -19 50 02.98  20.7w 470308    F51  C~1vVi      
2013 06  04.41034  16 00 29.730  -19 50 03.06  20.6w 470308    F51  C~1vVi      
2013 06  04.42497  16 00 29.655  -19 50 02.79  20.6w 470308    F51  C~1vVi      
2013 07  01.31362  15 58 24.092  -19 46 12.62  20.8w 470308    F51  C~1vVi      
2013 07  01.32699  15 58 24.033  -19 46 12.60  20.7w 470308    F51  C~1vVi      
2013 07  01.34034  15 58 23.984  -19 46 12.54  20.7w 470308    F51  C~1vVi      
2013 07  01.35367  15 58 23.932  -19 46 12.41  20.7w 470308    F51  C~1vVi      
2013 08  27.24652  15 56 54.816  -19 46 51.85  20.9w 470308    F51  C~1vVi      
2013 08  27.25048  15 56 54.823  -19 46 51.86  21.0w 470308    F51  C~1vVi      
2013 08  27.25451  15 56 54.832  -19 46 51.99  20.9w 470308    F51  C~1vVi      
2013 08  27.25849  15 56 54.822  -19 46 52.05  20.9w 470308    F51  C~1vVi      
2014 04  03.56790  16 10 32.191  -20 39 56.74  20.8w 470308    F51  C~1vVi      
2014 04  03.58022  16 10 32.162  -20 39 56.71  20.8w 470308    F51  C~1vVi      
2014 04  03.59258  16 10 32.114  -20 39 56.65  20.8w 470308    F51  C~1vVi      
2014 05  21.43517  16 06 58.636  -20 33 48.04  20.6w 470308    F51  C~1vVi      
2014 05  21.44828  16 06 58.569  -20 33 47.92  20.6w 470308    F51  C~1vVi      
2014 05  21.46136  16 06 58.498  -20 33 47.79  20.6w 470308    F51  C~1vVi      
2014 05  21.47447  16 06 58.427  -20 33 47.60  20.6w 470308    F51  C~1vVi      
2014 06  04.38984  16 05 44.599  -20 31 29.42  21.1g 470308    F51  C~1vVi      
2014 06  04.40236  16 05 44.551  -20 31 29.31  21.2g 470308    F51  C~1vVi      
2014 06  04.41488  16 05 44.478  -20 31 29.23  21.2g 470308    F51  C~1vVi      
2014 06  26.33080  16 03 57.596  -20 28 16.06  20.6w 470308    F51  C~1vVi      
2014 06  26.34143  16 03 57.550  -20 28 16.10  20.5w 470308    F51  C~1vVi      
2014 06  26.35205  16 03 57.500  -20 28 16.22  20.5w 470308    F51  C~1vVi      
2014 06  26.36269  16 03 57.444  -20 28 16.26  20.5w 470308    F51  C~1vVi      
2014 06  28.33017  16 03 48.930  -20 28 01.43  20.7w 470308    F51  C~1vVi      
2014 06  28.34076  16 03 48.889  -20 28 01.41  20.7w 470308    F51  C~1vVi      
2014 06  28.35134  16 03 48.839  -20 28 01.30  20.7w 470308    F51  C~1vVi      
2014 06  28.36193  16 03 48.792  -20 28 01.24  20.8w 470308    F51  C~1vVi      
2014 08  22.24957  16 01 55.133  -20 27 00.96  20.8w 470308    F51  C~1vVi      
2014 08  22.26126  16 01 55.135  -20 27 01.02  20.7w 470308    F51  C~1vVi      
2014 08  22.27293  16 01 55.141  -20 27 01.03  20.8w 470308    F51  C~1vVi      
2014 08  22.28460  16 01 55.144  -20 27 01.17  20.9w 470308    F51  C~1vVi      
2015 06  11.36120  16 10 26.348  -21 11 17.57  20.7w 470308    F51  C~1vVi      
2015 06  11.37332  16 10 26.284  -21 11 17.51  20.8w 470308    F51  C~1vVi      
2015 06  11.38540  16 10 26.222  -21 11 17.36  20.8w 470308    F51  C~1vVi      
2015 06  11.39747  16 10 26.159  -21 11 17.27  20.9w 470308    F51  C~1vVi      
2015 06  13.37891  16 10 16.060  -21 10 59.56  20.6w 470308    F51  C~1vVi      
2015 06  13.39099  16 10 15.998  -21 10 59.45  20.5w 470308    F51  C~1vVi      
2015 06  13.40310  16 10 15.931  -21 10 59.37  20.7w 470308    F51  C~1vVi      
2015 07  09.34601  16 08 20.483  -21 07 46.53  20.8w 470308    F51  C~1vVi      
2015 07  09.35780  16 08 20.441  -21 07 46.48  20.8w 470308    F51  C~1vVi      
2015 07  09.36947  16 08 20.399  -21 07 46.41  20.9w 470308    F51  C~1vVi      
2015 07  09.38149  16 08 20.352  -21 07 46.26  20.8w 470308    F51  C~1vVi      

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    -0.16       0.00     0.24
  2  10.0041      0.00     0.54       0.00    -0.08
  3  12.1148      0.00     0.45       0.00    -0.42
  4  18.1974      0.00    -0.27       0.00     0.06
  5  18.1975      0.00     0.14       0.00     0.41
  6  18.1975      0.00     0.17       0.00     0.31
  7  18.1976      0.00     0.48       0.00    -0.34
  8  18.2383      0.00     0.21       0.00     0.15
  9  18.2602      0.00    -0.31       0.00    -0.25
 10  19.1601      0.00     0.11       0.00    -0.60
 11  19.1601      0.00    -0.05       0.00     0.07
 12  23.1722      0.00     0.29       0.00     0.64
 13  23.1723      0.00     0.03       0.00     1.22
 14  23.1746      0.00     0.43       0.00     0.41
 15  23.1749      0.00    -0.11       0.00     0.78
 16  23.2734      0.00    -0.02       0.00    -0.52
 17  23.2758      0.00    -0.20       0.00    -1.44
 18  23.2759      0.00    -0.07       0.00    -0.04
 19  23.2761      0.00    -0.03       0.00    -0.19
 20  23.2785      0.00    -0.03       0.00    -0.02
 21  23.3497      0.00     0.16       0.00     0.06
 22  23.3551      0.00     0.03       0.00     0.04
 23  24.0019      0.00    -0.48       0.00    -0.19
 24  24.0099      0.00     0.76       0.00    -0.04
 25  24.0183      0.00    -0.35       0.00    -0.00
 26  24.0184      0.00     0.40       0.00     0.05
 27  24.0184      0.00     0.46       0.00     0.38
 28  24.0185      0.00     0.26       0.00     0.42
 29  24.0185      0.00     0.18       0.00     0.65
 30  24.0185      0.00    -0.36       0.00    -0.46
 31  24.1551      0.00    -0.06       0.00     0.17
 32  24.1578      0.00    -0.06       0.00     0.09
 33  24.1578      0.00    -0.05       0.00     0.16
 34  27.2024      0.00     0.13       0.00     0.11
 35  27.2025      0.00    -0.04       0.00    -0.07
 36  27.2025      0.00    -0.14       0.00    -0.18
 37  27.2026      0.00     0.02       0.00    -0.19
 38  28.1818      0.00    -0.12       0.00     0.02
 39  28.1820      0.00    -0.06       0.00     0.00
 40  28.1821      0.00    -0.10       0.00    -0.03
 41  28.1844      0.00     0.01       0.00     0.01
 42  28.1848      0.00    -0.04       0.00    -0.02
 43  28.1853      0.00     0.05       0.00    -0.07
 44  28.1870      0.00    -0.09       0.00    -0.07
 45  28.1875      0.00    -0.05       0.00     0.04
 46  28.1878      0.00    -0.07       0.00     0.06
 47  28.1898      0.00    -0.42       0.00     0.18
 48  28.1902      0.00     0.05       0.00     0.06
 49  28.1905      0.00     0.06       0.00    -0.02
 50  29.1055      0.00     0.01       0.00    -0.05
 51  29.1055      0.00    -0.01       0.00    -0.06
 52  29.1056      0.00    -0.04       0.00     0.05
 53  29.1056      0.00    -0.01       0.00     0.04
 54  29.1571      0.00     0.03       0.00     0.17
 55  29.1571      0.00    -0.05       0.00    -0.06
 56  29.1571      0.00     0.05       0.00     0.02
 57  29.1683      0.00     0.12       0.00     0.09
 58  29.1683      0.00     0.11       0.00     0.08
 59  29.1683      0.00     0.06       0.00     0.11
 60  29.1684      0.00     0.10       0.00     0.06
 61  29.2420      0.00     0.22       0.00    -0.04
 62  29.2421      0.00     0.10       0.00     0.03
 63  29.2421      0.00     0.08       0.00    -0.20
 64  29.2422      0.00     0.11       0.00    -0.08
 65  29.3158      0.00     0.03       0.00    -0.03
 66  29.3158      0.00    -0.04       0.00    -0.10
 67  29.3158      0.00     0.04       0.00    -0.12
 68  29.3159      0.00     0.07       0.00    -0.08
 69  29.4716      0.00     0.11       0.00    -0.04
 70  29.4717      0.00     0.15       0.00    -0.02
 71  29.4717      0.00     0.22       0.00    -0.11
 72  29.4717      0.00     0.01       0.00    -0.14
 73  30.0721      0.00    -0.22       0.00     0.02
 74  30.0721      0.00    -0.09       0.00     0.01
 75  30.0722      0.00    -0.24       0.00     0.02
 76  30.2032      0.00     0.01       0.00    -0.04
 77  30.2032      0.00     0.07       0.00    -0.05
 78  30.2032      0.00     0.07       0.00    -0.05
 79  30.2033      0.00     0.06       0.00     0.01
 80  30.2414      0.00    -0.04       0.00     0.02
 81  30.2414      0.00     0.24       0.00     0.01
 82  30.2414      0.00     0.15       0.00    -0.03
 83  30.3014      0.00     0.07       0.00     0.09
 84  30.3015      0.00     0.10       0.00    -0.03
 85  30.3015      0.00     0.06       0.00    -0.23
 86  30.3015      0.00    -0.06       0.00    -0.35
 87  30.3069      0.00     0.08       0.00     0.03
 88  30.3069      0.00     0.16       0.00    -0.03
 89  30.3070      0.00     0.10       0.00     0.01
 90  30.3070      0.00     0.09       0.00    -0.01
 91  30.4573      0.00     0.07       0.00    -0.03
 92  30.4573      0.00     0.03       0.00    -0.02
 93  30.4573      0.00     0.04       0.00     0.04
 94  30.4574      0.00     0.00       0.00    -0.03
 95  31.2598      0.00     0.15       0.00    -0.07
 96  31.2598      0.00     0.14       0.00    -0.12
 97  31.2598      0.00     0.16       0.00    -0.08
 98  31.2599      0.00     0.16       0.00    -0.10
 99  31.2653      0.00     0.09       0.00    -0.08
100  31.2653      0.00     0.10       0.00    -0.08
101  31.2654      0.00     0.03       0.00    -0.11
102  31.3364      0.00     0.17       0.00    -0.05
103  31.3364      0.00     0.20       0.00    -0.06
104  31.3365      0.00     0.23       0.00    -0.06
105  31.3365      0.00     0.20       0.00     0.02

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.

470308    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        39.218    39.218    39.218
ecceobj         0.034     0.034     0.034
incobj         18.205    18.205    18.205
qmin           33.943    34.171    33.864
qmax           45.737    45.186    45.838
amean          39.467    39.468    39.468
amin           38.954    38.961    38.949
amax           39.973    39.998    39.999
emean           0.069     0.078     0.070
emin            0.001     0.007     0.005
emax            0.145     0.134     0.146
imean          15.295    15.308    15.482
imin           12.991    13.546    13.698
imax           17.094    17.094    17.094
excite_mean     0.274     0.276     0.277
fracstop        1.000     1.000     1.000
cjmean          2.965     2.964     2.963

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       174.8     145.9     120.8
kozaiamp        179.9     180.0     179.6