Orbit Fit and Astrometric record for 474640

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: 474640    
# Created Mon Dec 18 02:36:51 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   37 observations of   37
# Arc:  15.94y
# First observation: 2000/09/26
#  Last observation: 2016/09/03
# Chi-squared of fit:    49.36 DOF:   68 RMS:  0.20
# Min/Max residuals:    -0.57    0.60
# Exact a, adot, b, bdot, g, gdot:
  1.799322E-05  2.483001E-02  6.980078E-06  8.238363E-03  2.126649E-02 -2.686106E-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
  -18.529012   23.077719    0.336644   -0.298348   -0.889601  2451813.878614
# Heliocentric elements and errors
Epoch:              2451814.5000  =  2000/09/27
Mean Anomaly:          359.51588 +/-     0.000
Argument of Peri:      326.95243 +/-     0.000
Long of Asc Node:       66.12497 +/-     0.000
Inclination:            25.50371 +/-     0.000
Eccentricity:         0.86589738 +/-    0.0000
Semi-Major Axis:    352.85701892 +/-    0.0000
Time of Perihelion: 2455070.2390 +/-       0.0
Perihelion:          47.31904982 +/-    0.0000
Aphelion:           658.39498802 +/-    0.0000
Period (y)             6628.3639 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.01721013 +/-    0.0000
Ecliptic Y           17.53973126 +/-    0.0000
Ecliptic Z          -14.94266397 +/-    0.0000
Ecliptic XDOT        -0.00125206 +/-    0.0000
Ecliptic YDOT         0.00294943 +/-    0.0000
Ecliptic ZDOT         0.00111568 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.92056793 +/-    0.0000
Geocenter to KBO     47.02246275 +/-    0.0000
# Hcoef:  6.38

The following table shows the complete astrometric record for 474640. 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 (474640) followed by the observatory code and reference code for the source of the astrometry.

2000 09  26.377871 01 52 44.13   -08 15 48.2         474640    645  C~1dcI      
2000 09  26.378700 01 52 44.12   -08 15 48.2         474640    645  C~1dcI      
2000 09  26.381188 01 52 44.12   -08 15 48.2         474640    645  C~1dcI      
2004 11  06.11000  02 08 41.12   -04 33 02.1   22.7R 474640    807  Cv6209      
2004 11  06.12572  02 08 41.06   -04 33 02.3   22.2I 474640    807  Cv6209      
2004 11  14.12217  02 08 09.66   -04 34 09.7   23.1R 474640    807  Cv6209      
2004 11  14.13784  02 08 09.60   -04 34 09.7   22.2I 474640    807  Cv6209      
2004 11  20.07277  02 07 47.38   -04 34 38.2   23.2R 474640    807  Cv6209      
2004 11  20.08791  02 07 47.33   -04 34 38.3   22.2I 474640    807  Cv6209      
2004 12  07.11150  02 06 51.48   -04 34 11.5   22.6R 474640    807  Cv6209      
2004 12  07.12746  02 06 51.43   -04 34 11.3   22.4I 474640    807  Cv6209      
2004 12  11.09186  02 06 40.59   -04 33 40.9   22.9R 474640    807  Cv6209      
2004 12  11.10909  02 06 40.54   -04 33 40.8   22.3I 474640    807  Cv6209      
2004 12  15.08650  02 06 30.64   -04 33 01.0   22.8R 474640    807  Cv6209      
2004 12  15.11395  02 06 30.58   -04 33 00.8   22.2I 474640    807  Cv6209      
2005 12  24.09730  02 10 48.32   -03 32 10.6   22.8R 474640    807  Cv6209      
2005 12  24.11337  02 10 48.28   -03 32 10.3   22.4I 474640    807  Cv6209      
2005 12  29.08601  02 10 40.03   -03 30 48.5   22.9R 474640    807  Cv6209      
2005 12  29.11996  02 10 39.98   -03 30 48.0   22.5I 474640    807  Cv6209      
2005 12  31.06909  02 10 37.25   -03 30 12.0   23.0R 474640    807  Cv6209      
2007 11  08.29246  02 22 31.91   -01 34 02.1         474640    695  Cy4017      
2007 11  08.33091  02 22 31.74   -01 34 02.4         474640    695  Cy4017      
2008 10  24.35124  02 28 09.43   -00 30 37.5   23.0r 474640    695  C~0gMD      
2008 10  24.45648  02 28 09.03   -00 30 39.4   23.1r 474640    695  C~0gMD      
2008 11  03.20374  02 27 29.11   -00 33 01.0   24.2R 474640    250  S~06Al      
2008 11  03.20999  02 27 29.09   -00 33 01.1         474640    250  S~06Al      
2008 11  03.26971  02 27 28.84   -00 33 01.9         474640    250  S~06Al      
2008 11  03.27666  02 27 28.83   -00 33 02.0         474640    250  S~06Al      
2013 11  05.12314  02 50 44.54   +04 27 01.4   23.1r 474640    W84  C~2Jbt      
2013 11  05.21663  02 50 44.14   +04 27 00.2         474640    W84  C~2Jbt      
2013 11  05.27234  02 50 43.91   +04 26 59.6         474640    W84  C~2Jbt      
2014 09  26.35536  02 57 51.19   +05 36 39.5   22.8R 474640    695  C~1LJN      
2014 09  26.40091  02 57 51.05   +05 36 38.8         474640    695  C~1LJN      
2014 09  26.44569  02 57 50.93   +05 36 38.0         474640    695  C~1LJN      
2016 09  02.09514  03 07 52.51   +07 38 28.1   23.6r 474640    950  C~1zsc      
2016 09  03.18233  03 07 51.41   +07 38 17.7   23.6r 474640    950  C~1zsc      
2016 09  03.18923  03 07 51.40   +07 38 17.5   23.5r 474640    950  C~1zsc      

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    -0.05       0.00    -0.41
  2   0.0000      0.00     0.09       0.00    -0.09
  3   0.0000      0.00     0.22       0.00    -0.03
  4   4.1115      0.00     0.05       0.00     0.10
  5   4.1116      0.00     0.11       0.00     0.07
  6   4.1335      0.00    -0.08       0.00    -0.03
  7   4.1335      0.00    -0.06       0.00     0.07
  8   4.1497      0.00    -0.07       0.00     0.13
  9   4.1498      0.00     0.02       0.00     0.08
 10   4.1964      0.00    -0.10       0.00     0.06
 11   4.1964      0.00    -0.15       0.00     0.16
 12   4.2073      0.00    -0.07       0.00     0.26
 13   4.2073      0.00    -0.12       0.00     0.21
 14   4.2182      0.00    -0.11       0.00     0.26
 15   4.2183      0.00    -0.01       0.00     0.15
 16   5.2422      0.00     0.14       0.00     0.03
 17   5.2423      0.00    -0.00       0.00     0.08
 18   5.2559      0.00     0.09       0.00    -0.00
 19   5.2560      0.00     0.12       0.00    -0.11
 20   5.2613      0.00    -0.01       0.00     0.02
 21   7.1154      0.00    -0.18       0.00    -0.57
 22   7.1155      0.00    -0.35       0.00    -0.45
 23   8.0766      0.00    -0.21       0.00     0.21
 24   8.0769      0.00     0.29       0.00     0.00
 25   8.1036      0.00     0.30       0.00    -0.12
 26   8.1036      0.00     0.39       0.00    -0.14
 27   8.1037      0.00     0.32       0.00    -0.17
 28   8.1038      0.00     0.60       0.00    -0.18
 29  13.1081      0.00     0.29       0.00    -0.02
 30  13.1084      0.00     0.22       0.00    -0.04
 31  13.1085      0.00     0.29       0.00     0.07
 32  13.9986      0.00     0.21       0.00     0.22
 33  13.9987      0.00     0.06       0.00     0.24
 34  13.9988      0.00     0.19       0.00     0.15
 35  15.9335      0.00    -0.49       0.00    -0.16
 36  15.9365      0.00    -0.14       0.00     0.13
 37  15.9365      0.00    -0.17       0.00    -0.01

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.

474640    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       356.526   356.520   356.532
ecceobj         0.867     0.867     0.867
incobj         25.508    25.508    25.508
qmin           44.203    44.305    44.233
qmax          665.722   665.711   665.733
amean         327.444   328.263   328.320
amin          312.167   313.240   313.719
amax          356.525   356.520   356.531
emean           0.855     0.855     0.855
emin            0.845     0.846     0.846
emax            0.867     0.867     0.867
imean          24.538    24.554    24.473
imin           23.720    23.718    23.721
imax           25.440    25.376    25.294
excite_mean     0.950     0.951     0.950
fracstop        1.000     1.000     1.000
cjmean          3.204     3.204     3.204

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       334.2     334.4     333.1
kozaiamp          7.9       7.7       6.8