Orbit Fit and Astrometric record for 60608

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: 60608     
# Created Mon Oct 23 01:36:23 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   40 observations of   41
# Arc:  14.06y
# First observation: 2000/03/03
#  Last observation: 2014/03/26
# Chi-squared of fit:   123.85 DOF:   74 RMS:  0.31
# Min/Max residuals:    -0.47    1.67
# Exact a, adot, b, bdot, g, gdot:
  2.531570E-05  6.878794E-02 -7.637603E-08 -6.499667E-03  4.409082E-02 -1.330703E-02
# 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
   -2.789960  139.805536   -0.395611   -0.044754   -0.914083  2451606.670953
# Heliocentric elements and errors
Epoch:              2451606.5000  =  2000/03/03
Mean Anomaly:          352.67040 +/-     0.000
Argument of Peri:      235.17665 +/-     0.000
Long of Asc Node:      294.03753 +/-     0.000
Inclination:             5.94839 +/-     0.000
Eccentricity:         0.54016708 +/-    0.0000
Semi-Major Axis:     49.15494415 +/-    0.0000
Time of Perihelion: 2454169.3719 +/-       0.0
Perihelion:          22.60306163 +/-    0.0000
Aphelion:            75.70682666 +/-    0.0000
Period (y)              344.6347 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.25209164 +/-    0.0000
Ecliptic Y           14.91150058 +/-    0.0000
Ecliptic Z           -1.10395924 +/-    0.0000
Ecliptic XDOT        -0.00211717 +/-    0.0000
Ecliptic YDOT        -0.00380117 +/-    0.0000
Ecliptic ZDOT        -0.00036279 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   23.59480916 +/-    0.0000
Geocenter to KBO     22.68060399 +/-    0.0000
# Hcoef:  8.43

The following table shows the complete astrometric record for 60608. 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 (60608) followed by the observatory code and reference code for the source of the astrometry.

2000 03  03.17021  09 25 16.97   +12 13 31.1   22.8R 60608     695  Cb6922      
2000 03  03.21813  09 25 16.64   +12 13 33.0   22.8R 60608     695  Cb6922      
2000 03  03.26653  09 25 16.30   +12 13 34.4   22.8R 60608     695  Cb6922      
2000 03  15.45933  09 23 57.92   +12 19 49.2         60608     568  Cb6923      
2000 03  15.47773  09 23 57.80   +12 19 49.6         60608     568  Cb6923      
2000 03  15.52000  09 23 57.57   +12 19 50.8         60608     568  Cb6923      
2000 04  05.30954  09 22 23.49   +12 27 55.0   22.2R 60608     568  Cb6923      
2000 04  05.41164  09 22 23.14   +12 27 56.5   22.3R 60608     568  Cb6923      
2000 06  01.27097  09 23 45.57   +12 24 44.1   22.3R 60608     568  Cb6923      
2000 06  01.27681  09 23 45.61   +12 24 44.0   22.4R 60608     568  Cb6923      
2000 11  28.46155  09 48 47.93   +10 04 06.4   21.6R 60608     695  Cc2337      
2000 11  28.53683  09 48 47.94   +10 04 05.4   21.7R 60608     695  Cc2337      
2000 11  29.51238  09 48 48.15   +10 03 52.6   21.6R 60608     695  Cc2337      
2001 02  15.02141  09 42 18.63   +10 26 09.7         60608     950  Cc6641      
2001 02  15.97843  09 42 11.18   +10 26 45.0   21.4R 60608     950  Cc6641      
2001 02  16.01921  09 42 10.86   +10 26 46.5   21.1R 60608     950  Cc6641      
2002 01  14.21158  10 01 17.35   +08 26 12.8   22.0R 60608     950  Ce8748      
2002 01  14.24452  10 01 17.15   +08 26 13.6         60608     950  Ce8748      
2002 01  14.28194  10 01 16.94   +08 26 14.4         60608     950  Ce8748      
2002 02  03.62106  09 58 58.15   +08 36 06.6   21.0R 60608     568  Cf1715      
2002 02  04.52547  09 58 51.36   +08 36 37.5         60608     568  Cf1715      
2002 02  05.51220  09 58 43.94   +08 37 12.1         60608     568  Cf1715      
2002 02  12.94109  09 57 46.70   +08 41 41.3         60608     204  Ce8748      
2002 03  12.199270 09 54 22.68   +08 59 03.6   21.8V 60608     645  C~1STe      
2002 03  12.200100 09 54 22.68   +08 59 03.7   21.6V 60608     645  C~1STe      
2002 03  12.202587 09 54 22.66   +08 59 03.7   22.2V 60608     645  C~1STe      
2003 03  02.33315  10 10 53.68   +07 05 45.5         60608     568  Ch5667      
2003 03  02.36896  10 10 53.41   +07 05 47.0         60608     568  Ch5667      
2004 05  28.98979  10 21 27.30   +05 50 50.1   20.3R 60608     304  Ck8907      
2004 05  29.02358  10 21 27.39   +05 50 49.7         60608     304  Ck8907      
2007 04  20.242772 11 07 33.21   +00 06 15.2   22.2V 60608     645  C~1STe      
2007 04  20.243601 11 07 33.20   +00 06 15.2   21.9V 60608     645  C~1STe      
2007 04  20.246089 11 07 33.19   +00 06 15.3   22.7V 60608     645  C~1STe      
2012 05  18.20590  12 22 01.29   -08 52 29.9   21.9R 60608     688  C~0hii      
2012 05  18.26454  12 22 01.07   -08 52 28.0         60608     688  C~0hii      
2013 03  16.25849  12 43 56.83   -11 21 14.6   21.8r 60608     W84  C~2JNF      
2013 03  16.30593  12 43 56.49   -11 21 12.8         60608     W84  C~2JNF      
2013 03  16.36494  12 43 56.07   -11 21 10.6         60608     W84  C~2JNF      
2014 03  26.15780  12 57 52.13   -12 52 05.3   22.4V 60608     W84  C~2JNF      
2014 03  26.22604  12 57 51.62   -12 52 02.6         60608     W84  C~2JNF      
2014 03  26.29610  12 57 51.10   -12 51 59.8         60608     W84  C~2JNF      

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    -0.31       0.00     1.67
  2   0.0001      0.00    -0.05       0.00    -0.10
  3   0.0003      0.00     0.01       0.00    -0.28
  4   0.0336      0.00    -0.02       0.00    -0.17
  5   0.0337      0.00    -0.19       0.00    -0.29
  6   0.0338      0.00     0.11       0.00    -0.28
  7   0.0907      0.00    -0.14       0.00    -0.23
  8   0.0910      0.00    -0.45       0.00    -0.47
  9   0.2467      0.00    -0.10       0.00    -0.46
 10   0.2467      0.00    -0.01       0.00    -0.42
 11   0.7400      0.00     0.23       0.00     0.10
 12   0.7402      0.00     0.20       0.00     0.11
 13   0.7429      0.00     0.29       0.00     0.04
 14   0.9551      0.00     0.19       0.00    -0.06
 15   0.9577      0.00     0.22       0.00     0.34
 16   0.9578      0.00     0.27       0.00     0.34
 17   1.8673      0.00     0.01       0.00     0.27
 18   1.8674      0.00     0.01       0.00     0.32
 19   1.8675      0.00     0.26       0.00     0.27
 20   1.9232      0.00    -0.32       0.00     0.28
 21   1.9257      0.00    -0.45       0.00    -0.05
 22   1.9284      0.00    -0.03       0.00     0.13
 23   1.9487      0.00 (  -2.96)      0.00 (  -0.15)
 24   2.0234      0.00     0.09       0.00    -0.24
 25   2.0234      0.00     0.18       0.00    -0.17
 26   2.0234      0.00     0.14       0.00    -0.26
 27   2.9957      0.00     0.26       0.00     0.63
 28   2.9958      0.00     0.36       0.00     0.67
 29   4.2377      0.00     0.65       0.00     0.29
 30   4.2378      0.00     0.50       0.00     0.22
 31   7.1296      0.00    -0.01       0.00    -0.14
 32   7.1296      0.00    -0.10       0.00    -0.17
 33   7.1296      0.00    -0.07       0.00    -0.17
 34  12.2082      0.00    -0.07       0.00     0.17
 35  12.2083      0.00    -0.05       0.00    -0.02
 36  13.0351      0.00    -0.00       0.00    -0.12
 37  13.0353      0.00     0.01       0.00    -0.10
 38  13.0354      0.00     0.06       0.00    -0.11
 39  14.0616      0.00     0.17       0.00    -0.15
 40  14.0618      0.00     0.11       0.00    -0.16
 41  14.0619      0.00     0.10       0.00    -0.16

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.

60608    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        49.107    49.106    49.107
ecceobj         0.540     0.540     0.540
incobj          5.949     5.949     5.949
qmin           22.406    22.326    22.402
qmax           79.693    77.013    77.974
amean          49.703    49.215    49.587
amin           48.172    48.611    49.026
amax           51.310    49.844    50.393
emean           0.540     0.539     0.542
emin            0.522     0.530     0.536
emax            0.553     0.546     0.548
imean           8.473     8.206     8.019
imin            7.511     7.511     7.511
imax            9.036     8.676     8.378
excite_mean     0.559     0.558     0.559
fracstop        0.011     0.007     0.004
cjmean          2.745     2.743     2.743

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       247.4     244.7     240.9
kozaiamp         11.8       8.5       5.3