Orbit Fit and Astrometric record for 307261

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: 307261    
# Created Mon Dec 11 02:36:44 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   71 observations of   71
# Arc:  63.38y
# First observation: 1954/04/08
#  Last observation: 2017/08/25
# Chi-squared of fit:   305.30 DOF:  136 RMS:  0.37
# Min/Max residuals:    -2.02    1.72
# Exact a, adot, b, bdot, g, gdot:
  1.185739E-05  1.815134E-02  6.603152E-06  5.795085E-03  2.200862E-02  1.913480E-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
   -0.062276 -143.744466    0.298039   -0.000867   -0.953108  2434840.875707
# Heliocentric elements and errors
Epoch:              2434840.5000  =  1954/04/08
Mean Anomaly:          133.89510 +/-     0.000
Argument of Peri:      215.19362 +/-     0.000
Long of Asc Node:      216.07156 +/-     0.000
Inclination:            17.71834 +/-     0.000
Eccentricity:         0.14716291 +/-    0.0000
Semi-Major Axis:     41.73042818 +/-    0.0000
Time of Perihelion: 2398218.6855 +/-       0.0
Perihelion:          35.58925683 +/-    0.0000
Aphelion:            47.87159954 +/-    0.0000
Period (y)              269.5799 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.58826878 +/-    0.0000
Ecliptic Y          -27.19113143 +/-    0.0000
Ecliptic Z           -0.04910030 +/-    0.0000
Ecliptic XDOT         0.00113623 +/-    0.0000
Ecliptic YDOT        -0.00196351 +/-    0.0000
Ecliptic ZDOT         0.00072080 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.39215892 +/-    0.0000
Geocenter to KBO     45.43670781 +/-    0.0000
# Hcoef:  3.65

The following table shows the complete astrometric record for 307261. 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 (307261) followed by the observatory code and reference code for the source of the astrometry.

1954 04  08.37535  14 15 39.35   -13 39 52.5         307261    261   x1732      
1955 04  16.32917  14 19 36.64   -13 38 22.7         307261    261   x1732      
1982 08  09.38380  16 09 39.06   -12 20 00.8         307261    260   x1732      
1983 06  14.54428  16 16 21.79   -12 16 28.0         307261    260   x1732      
1983 07  01.46809  16 15 17.21   -12 14 19.9         307261    260   x1732      
1983 07  10.49060  16 14 47.94   -12 13 44.0         307261    260   x1732      
1992 06  23.57704  16 53 16.75   -11 13 38.2         307261    260   x1732      
2002 06  18.26647  17 35 19.07   -09 44 02.3         307261    644  Cg7929      
2002 06  18.32472  17 35 18.76   -09 44 01.5         307261    644  Cg7929      
2002 06  18.38899  17 35 18.46   -09 44 01.1         307261    644  Cg7929      
2002 08  08.19282  17 32 12.13   -09 46 47.9         307261    675  Cg7929      
2002 08  08.25481  17 32 11.99   -09 46 48.6         307261    675  Cg7929      
2002 08  08.28455  17 32 11.93   -09 46 48.9   20.5R 307261    675  Cg7929      
2003 05  31.31597  17 40 47.16   -09 35 48.5   19.9R 307261    675  Ci1476      
2003 05  31.38848  17 40 46.86   -09 35 47.9   20.0R 307261    675  Ci1476      
2003 05  31.43606  17 40 46.66   -09 35 47.5   20.1R 307261    675  Ci1476      
2003 06  21.00898  17 39 17.52   -09 33 41.0   20.1R 307261    621  Ci1476      
2003 06  21.02064  17 39 17.50   -09 33 41.4         307261    621  Ci1476      
2003 06  21.03230  17 39 17.43   -09 33 40.8         307261    621  Ci1476      
2003 06  22.01494  17 39 13.10   -09 33 37.6   20.3R 307261    621  Ci1476      
2003 06  22.03825  17 39 13.00   -09 33 37.6         307261    621  Ci1476      
2003 07  05.98001  17 38 13.59   -09 33 28.5   20.5R 307261    204  Ci2220      
2004 04  22.51205  17 47 03.68   -09 34 04.8   20.0R 307261    568  Ck9583      
2004 04  22.61544  17 47 03.44   -09 34 02.9         307261    568  Ck9583      
2004 05  26.27079  17 45 14.39   -09 26 05.1   19.9R 307261    304  Ck8672      
2004 05  26.28100  17 45 14.35   -09 26 05.0         307261    304  Ck8672      
2004 07  10.96621  17 41 59.81   -09 23 23.7   21. R 307261    621  Cl0687      
2004 07  13.95236  17 41 48.07   -09 23 34.9   21. R 307261    621  Cl0687      
2005 06  06.31341  17 48 39.62   -09 13 55.3   20.4R 307261    290  Cn6495      
2005 06  06.37417  17 48 39.36   -09 13 54.8   20.4R 307261    290  Cn6495      
2005 06  07.18605  17 48 35.86   -09 13 49.0   19.8R 307261    304  Cn6495      
2005 06  07.19528  17 48 35.83   -09 13 48.9         307261    304  Cn6495      
2005 08  05.87456  17 44 41.60   -09 15 58.5   20.2C 307261    J86  Cz6591      
2005 08  05.88875  17 44 41.56   -09 15 58.6   20.1C 307261    J86  Cz6591      
2005 08  05.92868  17 44 41.45   -09 15 59.0   20.1C 307261    J86  Cz6591      
2005 08  06.86380  17 44 38.92   -09 16 08.9   20.1C 307261    J86  Cz6591      
2005 08  06.87443  17 44 38.90   -09 16 08.9   20.1C 307261    J86  Cz6591      
2005 08  06.95567  17 44 38.69   -09 16 09.7   20.3C 307261    J86  Cz6591      
2005 08  06.96986  17 44 38.64   -09 16 09.9   20.2C 307261    J86  Cz6591      
2005 08  07.95801  17 44 36.05   -09 16 20.9   20.9C 307261    J86  Cz6591      
2007 06  14.32018  17 56 29.36   -08 51 23.1   19.5R 307261    688  Cv1039      
2007 06  14.36728  17 56 29.14   -08 51 23.0         307261    688  Cv1039      
2008 05  03.41798  18 03 13.86   -08 47 20.1         307261    695  Cz0392      
2008 05  03.41939  18 03 13.86   -08 47 20.1         307261    695  Cz0392      
2008 05  03.48420  18 03 13.68   -08 47 19.0         307261    695  Cz0392      
2008 05  03.48485  18 03 13.68   -08 47 19.0         307261    695  Cz0392      
2009 06  24.01042  18 04 08.47   -08 28 16.2   20.1V 307261    511  C~0DTn      
2009 06  24.95196  18 04 04.31   -08 28 15.5   20.4V 307261    511  C~0DTn      
2009 06  24.96487  18 04 04.26   -08 28 15.3   20.4V 307261    511  C~0DTn      
2009 06  24.97815  18 04 04.20   -08 28 15.4   20.7V 307261    511  C~0DTn      
2009 09  18.01279  18 00 19.823  -08 43 13.34        307261    809  C~0FlN      
2009 09  18.01489  18 00 19.797  -08 43 13.74        307261    809  C~0FlN      
2009 09  19.04117  18 00 20.169  -08 43 31.43        307261    809  C~0FlN      
2009 09  19.04269  18 00 20.174  -08 43 31.73        307261    809  C~0FlN      
2009 09  19.04529  18 00 20.175  -08 43 31.74        307261    809  C~0FlN      
2009 09  19.04799  18 00 20.165  -08 43 31.49        307261    809  C~0FlN      
2009 09  19.04979  18 00 20.205  -08 43 32.08        307261    809  C~0FlN      
2009 09  19.05258  18 00 20.167  -08 43 31.55        307261    809  C~0FlN      
2009 09  19.05469  18 00 20.176  -08 43 31.91        307261    809  C~0FlN      
2010 08  01.17691  18 05 47.68   -08 19 55.4   18.7J 307261    W91  C~1ksm      
2010 08  01.17846  18 05 47.68   -08 19 55.4   18.7J 307261    W91  C~1ksm      
2010 08  01.18195  18 05 47.68   -08 19 55.4   17.9K 307261    W91  C~1ksm      
2010 08  01.18350  18 05 47.68   -08 19 55.3   17.9K 307261    W91  C~1ksm      
2017 05  29.50780  18 39 35.830  -06 51 47.47        307261    568  C~2NEE      
2017 05  29.51180  18 39 35.814  -06 51 47.43        307261    568  C~2NEE      
2017 05  30.53707  18 39 32.040  -06 51 38.35        307261    568  C~2NEE      
2017 07  04.33021  18 37 05.98   -06 50 15.6   19.3R 307261    G37  C~2Iqf      
2017 07  04.37918  18 37 05.76   -06 50 15.7         307261    G37  C~2Iqf      
2017 07  04.42604  18 37 05.55   -06 50 16.0         307261    G37  C~2Iqf      
2017 08  16.33216  18 34 21.385  -06 57 55.35        307261    568  C~2NEE      
2017 08  25.31124  18 33 58.529  -07 00 28.35        307261    568  C~2NEE      

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    -0.74
  2   1.0211      0.00    -0.04       0.00     0.26
  3  28.3368      0.00    -0.06       0.00     0.34
  4  29.1832      0.00    -0.08       0.00     0.10
  5  29.2295      0.00     0.37       0.00     0.24
  6  29.2543      0.00    -0.19       0.00     0.54
  7  38.2100      0.00    -0.33       0.00    -0.14
  8  48.1941      0.00     0.43       0.00    -2.02
  9  48.1942      0.00    -0.33       0.00    -1.46
 10  48.1944      0.00    -0.55       0.00    -1.32
 11  48.3335      0.00    -0.47       0.00     0.19
 12  48.3337      0.00    -0.28       0.00     0.11
 13  48.3338      0.00    -0.08       0.00     0.11
 14  49.1443      0.00     0.09       0.00     0.45
 15  49.1445      0.00     0.21       0.00     0.39
 16  49.1446      0.00     0.25       0.00     0.35
 17  49.2009      0.00     0.38       0.00    -0.17
 18  49.2009      0.00     0.86       0.00    -0.61
 19  49.2010      0.00     0.58       0.00    -0.05
 20  49.2037      0.00     0.08       0.00     0.22
 21  49.2037      0.00     0.12       0.00     0.15
 22  49.2419      0.00     1.72       0.00    -0.73
 23  50.0401      0.00    -0.02       0.00    -0.03
 24  50.0404      0.00    -0.06       0.00     0.07
 25  50.1325      0.00    -0.04       0.00     0.17
 26  50.1325      0.00    -0.01       0.00     0.17
 27  50.2576      0.00     0.35       0.00     0.14
 28  50.2658      0.00    -0.25       0.00     0.19
 29  51.1620      0.00     0.09       0.00     0.02
 30  51.1622      0.00     0.15       0.00     0.09
 31  51.1644      0.00    -0.18       0.00     0.07
 32  51.1645      0.00    -0.02       0.00     0.11
 33  51.3279      0.00    -0.04       0.00     0.20
 34  51.3279      0.00    -0.05       0.00     0.25
 35  51.3280      0.00    -0.02       0.00     0.27
 36  51.3306      0.00    -0.13       0.00     0.24
 37  51.3306      0.00     0.00       0.00     0.36
 38  51.3308      0.00     0.18       0.00     0.42
 39  51.3309      0.00     0.01       0.00     0.37
 40  51.3336      0.00     0.17       0.00     0.04
 41  53.1826      0.00    -0.06       0.00     0.19
 42  53.1827      0.00    -0.23       0.00     0.08
 43  54.0699      0.00    -0.17       0.00     0.03
 44  54.0699      0.00    -0.12       0.00     0.01
 45  54.0701      0.00    -0.12       0.00     0.08
 46  54.0701      0.00    -0.10       0.00     0.07
 47  55.2105      0.00     0.21       0.00    -0.03
 48  55.2131      0.00    -0.16       0.00    -0.02
 49  55.2131      0.00    -0.05       0.00     0.17
 50  55.2132      0.00    -0.06       0.00     0.06
 51  55.4460      0.00     0.24       0.00     0.44
 52  55.4460      0.00    -0.15       0.00     0.08
 53  55.4488      0.00    -0.13       0.00     0.01
 54  55.4488      0.00    -0.06       0.00    -0.26
 55  55.4488      0.00    -0.06       0.00    -0.23
 56  55.4488      0.00    -0.23       0.00     0.07
 57  55.4488      0.00     0.36       0.00    -0.49
 58  55.4488      0.00    -0.22       0.00     0.09
 59  55.4488      0.00    -0.10       0.00    -0.24
 60  56.3143      0.00    -0.15       0.00     0.14
 61  56.3143      0.00    -0.07       0.00     0.15
 62  56.3143      0.00     0.11       0.00     0.19
 63  56.3143      0.00     0.19       0.00     0.31
 64  63.1407      0.00     0.16       0.00    -0.10
 65  63.1407      0.00     0.14       0.00    -0.09
 66  63.1435      0.00     0.16       0.00    -0.11
 67  63.2388      0.00     0.01       0.00     0.01
 68  63.2389      0.00    -0.01       0.00     0.10
 69  63.2390      0.00    -0.03       0.00    -0.02
 70  63.3565      0.00     0.08       0.00    -0.07
 71  63.3811      0.00     0.07       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.

307261    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.619    41.619    41.619
ecceobj         0.149     0.149     0.149
incobj         17.742    17.742    17.742
qmin           34.599    34.375    34.721
qmax           49.182    49.572    49.185
amean          41.811    41.814    41.811
amin           41.469    41.435    41.450
amax           42.222    42.228    42.224
emean           0.151     0.154     0.151
emin            0.136     0.136     0.136
emax            0.168     0.176     0.167
imean          18.725    18.670    18.710
imin           17.992    17.740    17.906
imax           19.476    19.504    19.492
excite_mean     0.355     0.355     0.355
fracstop        1.000     1.000     1.000
cjmean          2.927     2.927     2.927

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       177.9     187.6     178.5
kozaiamp        180.0     180.0     180.0