Orbit Fit and Astrometric record for 52747

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: 52747     
# Created Mon Sep  1 01:36:43 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   22 observations of   22
# Arc:   6.08y
# First observation: 1998/04/29
#  Last observation: 2004/05/27
# Chi-squared of fit:    47.00 DOF:   38 RMS:  0.26
# Min/Max residuals:    -0.66    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.487041E-05  2.256752E-02 -8.764397E-07 -2.142330E-04  2.348377E-02 -1.088291E-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
    0.052694 -121.015997    0.352459    0.000635   -0.948636  2450933.001601
# Heliocentric elements and errors
Epoch:              2450932.5000  =  1998/04/29
Mean Anomaly:          291.07930 +/-     0.000
Argument of Peri:      250.35813 +/-     0.000
Long of Asc Node:       63.92268 +/-     0.000
Inclination:             0.54852 +/-     0.000
Eccentricity:         0.06224132 +/-    0.0000
Semi-Major Axis:     44.36935844 +/-    0.0000
Time of Perihelion: 2471599.1623 +/-       0.0
Perihelion:          41.60775111 +/-    0.0000
Aphelion:            47.13096577 +/-    0.0000
Period (y)              295.5513 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.72392512 +/-    0.0000
Ecliptic Y          -37.12851415 +/-    0.0000
Ecliptic Z            0.03915252 +/-    0.0000
Ecliptic XDOT         0.00232216 +/-    0.0000
Ecliptic YDOT        -0.00123826 +/-    0.0000
Ecliptic ZDOT        -0.00002518 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.53054331 +/-    0.0000
Geocenter to KBO     42.58266543 +/-    0.0000
# Hcoef:  7.78

The following table shows the complete astrometric record for 52747. 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 (52747) followed by the observatory code and reference code for the source of the astrometry.

1998 04  29.50087  15 47 05.94   -19 52 50.0   24.0R 52747     568  Ca4825      
1998 04  29.54120  15 47 05.75   -19 52 49.4   24.0R 52747     568  Ca4825      
1998 04  29.58028  15 47 05.59   -19 52 48.6   24.0R 52747     568  Ca4825      
1998 05  02.47942  15 46 52.45   -19 52 07.8   24.0R 52747     568  Ca4825      
1998 05  02.49102  15 46 52.40   -19 52 07.7   24.0R 52747     568  Ca4825      
1998 05  02.50262  15 46 52.36   -19 52 07.9   24.0R 52747     568  Ca4825      
1998 05  24.39492  15 45 08.34   -19 46 39.7   24.0R 52747     568  Ca4825      
1998 05  24.40657  15 45 08.27   -19 46 39.5   24.0R 52747     568  Ca4825      
1998 05  24.41822  15 45 08.21   -19 46 39.2   24.0R 52747     568  Ca4825      
1999 03  14.63032  15 54 49.58   -20 17 10.8   24.0R 52747     568  Ca4825      
1999 03  15.61936  15 54 48.28   -20 17 07.3   24.0R 52747     568  Ca4825      
2000 05  07.50819  15 57 12.34   -20 25 01.6   24.1R 52747     568  Cb5091      
2000 05  07.55043  15 57 12.15   -20 25 00.7   24.2R 52747     568  Cb5091      
2001 05  22.40868  16 01 27.24   -20 37 58.8         52747     568  Cd2198      
2001 05  22.47482  16 01 26.91   -20 37 57.8         52747     568  Cd2198      
2001 05  23.42222  16 01 22.32   -20 37 44.9         52747     568  Cd2198      
2001 05  23.48815  16 01 22.00   -20 37 44.1         52747     568  Cd2198      
2002 04  06.27987  16 10 09.22   -21 02 15.1   22.0R 52747     807  Cj9735      
2002 04  07.28495  16 10 06.25   -21 02 07.2   22.9R 52747     807  Ch1064      
2002 04  07.38104  16 10 05.94   -21 02 06.6         52747     807  Ch1064      
2004 05  27.23352  16 17 31.37   -21 22 28.3   23.8R 52747     304  Ck8881      
2004 05  27.25933  16 17 31.25   -21 22 28.0         52747     304  Ck8881      

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    -0.21       0.00     0.50
  2   0.0001      0.00     0.06       0.00     0.15
  3   0.0002      0.00     0.33       0.00     0.40
  4   0.0082      0.00    -0.22       0.00     0.16
  5   0.0082      0.00    -0.16       0.00     0.09
  6   0.0082      0.00     0.05       0.00    -0.28
  7   0.0682      0.00     0.29       0.00     0.07
  8   0.0682      0.00     0.10       0.00     0.09
  9   0.0682      0.00     0.05       0.00     0.21
 10   0.8737      0.00    -0.10       0.00     0.05
 11   0.8764      0.00    -0.08       0.00    -0.25
 12   2.0233      0.00     0.36       0.00    -0.66
 13   2.0234      0.00     0.53       0.00    -0.34
 14   3.0634      0.00    -0.44       0.00    -0.16
 15   3.0636      0.00    -0.45       0.00    -0.06
 16   3.0662      0.00     0.08       0.00    -0.09
 17   3.0664      0.00     0.20       0.00    -0.19
 18   3.9364      0.00     0.07       0.00    -0.21
 19   3.9392      0.00     0.13       0.00     0.04
 20   3.9394      0.00    -0.08       0.00    -0.10
 21   6.0773      0.00     0.09       0.00     0.36
 22   6.0774      0.00     0.23       0.00     0.35

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.

52747    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.163    44.163    44.163
ecceobj         0.059     0.059     0.059
incobj          0.546     0.546     0.546
qmin           41.099    41.101    41.097
qmax           48.010    48.006    48.023
amean          44.454    44.454    44.454
amin           44.102    44.101    44.107
amax           44.818    44.818    44.825
emean           0.057     0.057     0.057
emin            0.042     0.042     0.042
emax            0.071     0.071     0.072
imean           1.395     1.395     1.395
imin            0.728     0.728     0.728
imax            1.877     1.876     1.878
excite_mean     0.062     0.062     0.062
fracstop        1.000     1.000     1.000
cjmean          3.102     3.102     3.102

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       190.7     190.6     190.5
kozaiamp        180.0     180.0     180.0