Orbit Fit and Astrometric record for 06JU58

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: 06JU58    
# Created Tue Oct 24 01:37:38 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   23
# Arc:  10.89y
# First observation: 2004/05/24
#  Last observation: 2015/04/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000166   0.019616   0.000006   0.002404   0.021988   0.000000
# Chi-squared of fit:     8.77 DOF:   36 RMS:  0.11
# Min/Max residuals:    -0.23    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.387931E-05  1.990002E-02  2.064977E-06  2.436383E-03  2.196948E-02  2.446726E-03
# Covariance matrix:
  2.5048E-13 -1.8764E-13  1.3630E-14 -1.9107E-14  9.3818E-14 -6.9687E-13
 -1.8764E-13  2.3966E-13 -1.9521E-14  2.6851E-14  1.8947E-15  9.7770E-13
  1.3630E-14 -1.9521E-14  1.0241E-13 -1.5190E-14 -4.8031E-15 -8.3141E-14
 -1.9107E-14  2.6851E-14 -1.5190E-14  8.7073E-15  4.8352E-15  1.1375E-13
  9.3818E-14  1.8947E-15 -4.8031E-15  4.8352E-15  4.6966E-13  1.7043E-13
 -6.9687E-13  9.7770E-13 -8.3141E-14  1.1375E-13  1.7043E-13  4.1399E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.845152 -128.491995   -0.214062   -0.014550   -0.989787  2453149.866503
# Heliocentric elements and errors
Epoch:              2453140.5000  =  2004/05/15
Mean Anomaly:           83.42620 +/-     0.068
Argument of Peri:      255.05810 +/-     0.049
Long of Asc Node:      238.48649 +/-     0.000
Inclination:             7.03301 +/-     0.000
Eccentricity:         0.12832234 +/-    0.0001
Semi-Major Axis:     46.42502377 +/-    0.0065
Time of Perihelion: 2426365.6777 +/-      21.2
Perihelion:          40.46765618 +/-    0.0072
Aphelion:            52.38239137 +/-    0.0086
Period (y)              316.3271 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.77936680 +/-    0.0009
Ecliptic Y          -36.52913645 +/-    0.0011
Ecliptic Z           -0.67126893 +/-    0.0000
Ecliptic XDOT         0.00174582 +/-    0.0000
Ecliptic YDOT        -0.00179264 +/-    0.0000
Ecliptic ZDOT         0.00029921 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.50892780 +/-    0.0010
Geocenter to KBO     45.51768162 +/-    0.0014
# Hcoef:  6.90

The following table shows the complete astrometric record for 06JU58. 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 (06JU58) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.36576  15 15 24.19   -18 57 20.6   23.3g 06JU58    568  C~0VEN      
2004 05  24.38893  15 15 24.08   -18 57 20.1   23.6g 06JU58    568  C~0VEN      
2004 05  24.41334  15 15 23.97   -18 57 19.7   23.3g 06JU58    568  C~0VEN      
2004 06  10.29914  15 14 14.76   -18 52 21.8   23.5i 06JU58    568  C~0VEN      
2004 06  10.36907  15 14 14.50   -18 52 20.6   23.4i 06JU58    568  C~0VEN      
2004 06  10.43311  15 14 14.24   -18 52 19.6   23.2i 06JU58    568  C~0VEN      
2005 05  14.39397  15 20 57.96   -19 10 00.3   23.3r 06JU58    568  C~0VEN      
2005 05  14.42769  15 20 57.81   -19 09 59.7   23.2r 06JU58    568  C~0VEN      
2005 05  14.46641  15 20 57.62   -19 09 58.8   23.4r 06JU58    568  C~0VEN      
2005 07  08.32520  15 17 36.38   -18 55 40.6   22.9r 06JU58    568  C~0VEN      
2005 07  08.36050  15 17 36.30   -18 55 40.3   22.7r 06JU58    568  C~0VEN      
2005 08  02.10552  15 17 05.26   -18 52 46.7         06JU58    309  C~0VEN      
2005 08  02.10930  15 17 05.26   -18 52 46.7         06JU58    309  C~0VEN      
2005 08  03.09538  15 17 05.06   -18 52 43.6         06JU58    309  C~0VEN      
2005 08  03.09917  15 17 05.05   -18 52 43.5         06JU58    309  C~0VEN      
2006 05  01.37053  15 26 44.56   -19 22 50.8   24.2R 06JU58    695  Cr3615      
2006 05  01.44301  15 26 44.28   -19 22 50.2         06JU58    695  Cr3615      
2006 05  02.46515  15 26 40.20   -19 22 36.8         06JU58    695  Cr3615      
2006 05  03.32385  15 26 36.08   -19 22 17.5   22.9r 06JU58    695  C~0VEN      
2006 05  03.38468  15 26 35.83   -19 22 16.5   22.8r 06JU58    695  C~0VEN      
2015 04  15.40204  16 10 03.41   -20 23 10.1   22.7R 06JU58    695  C~1RHd      
2015 04  15.44032  16 10 03.30   -20 23 09.5         06JU58    695  C~1RHd      
2015 04  15.47892  16 10 03.16   -20 23 09.4         06JU58    695  C~1RHd      

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     0.09       0.00    -0.06
  2   0.0001     -1.64    -0.03       0.07    -0.02
  3   0.0001     -3.25    -0.05       0.05    -0.07
  4   0.0464  -1029.11    -0.00      29.63    -0.07
  5   0.0466  -1032.99     0.14      29.82     0.01
  6   0.0467  -1036.81    -0.01      29.81    -0.11
  7   0.9720   4768.71    -0.02     486.75     0.14
  8   0.9721   4766.50     0.03     486.79     0.14
  9   0.9722   4763.66    -0.21     486.98     0.28
 10   1.1224   1784.86    -0.09     584.70     0.09
 11   1.1225   1783.69    -0.06     584.69     0.02
 12   1.1903   1313.23     0.10     638.22    -0.13
 13   1.1903   1313.23     0.12     638.22    -0.14
 14   1.1930   1309.69     0.01     640.48    -0.06
 15   1.1930   1309.52    -0.14     640.54    -0.01
 16   1.9357   9719.43    -0.05     968.74    -0.23
 17   1.9359   9715.44 (   0.63)    968.35 (  -0.70)
 18   1.9387   9656.05 (   6.47)    967.12 (  -3.18)
 19   1.9410   9594.66    -0.05     971.47     0.10
 20   1.9412   9590.98     0.23     971.57     0.14
 21  10.8913  47088.27    -0.10    5408.23    -0.06
 22  10.8914  47086.56     0.11    5408.54     0.19
 23  10.8915  47084.50    -0.01    5408.26    -0.15

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.

06JU58    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.968    45.987    45.949
ecceobj         0.126     0.126     0.125
incobj          7.059     7.059     7.059
qmin           39.732    39.755    39.674
qmax           53.175    53.175    53.094
amean          46.295    46.314    46.276
amin           45.914    45.929    45.887
amax           46.736    46.746    46.697
emean           0.125     0.125     0.125
emin            0.113     0.113     0.113
emax            0.139     0.139     0.138
imean           8.396     8.395     8.397
imin            7.906     7.902     7.907
imax            8.800     8.798     8.809
excite_mean     0.192     0.192     0.192
fracstop        1.000     1.000     1.000
cjmean          3.084     3.084     3.084

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       179.0     179.1     179.1
kozaiamp        180.0     180.0     179.9