Orbit Fit and Astrometric record for 385571

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: 385571    
# Created Thu Dec 14 02:36:45 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   21 observations of   21
# Arc:   8.97y
# First observation: 2004/10/16
#  Last observation: 2013/10/06
# Chi-squared of fit:   104.69 DOF:   36 RMS:  0.39
# Min/Max residuals:    -1.50    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.955143E-05  4.105255E-02 -1.776498E-06  8.765688E-04  3.506656E-02 -1.065293E-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
   -0.754582    3.459393   -0.331264   -0.012320   -0.943888  2453294.530053
# Heliocentric elements and errors
Epoch:              2453294.5000  =  2004/10/16
Mean Anomaly:          322.74953 +/-     0.000
Argument of Peri:        8.41328 +/-     0.000
Long of Asc Node:       34.69331 +/-     0.000
Inclination:             1.43558 +/-     0.000
Eccentricity:         0.02471512 +/-    0.0000
Semi-Major Axis:     30.04292390 +/-    0.0000
Time of Perihelion: 2459518.0897 +/-       0.0
Perihelion:          29.30040938 +/-    0.0000
Aphelion:            30.78543843 +/-    0.0000
Period (y)              164.6727 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.38077223 +/-    0.0000
Ecliptic Y            2.10964066 +/-    0.0000
Ecliptic Z           -0.37562405 +/-    0.0000
Ecliptic XDOT        -0.00027693 +/-    0.0000
Ecliptic YDOT         0.00318727 +/-    0.0000
Ecliptic ZDOT         0.00006962 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.45881745 +/-    0.0000
Geocenter to KBO     28.51724637 +/-    0.0000
# Hcoef:  8.78

The following table shows the complete astrometric record for 385571. 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 (385571) followed by the observatory code and reference code for the source of the astrometry.

2004 10  16.02931  00 13 53.82   +00 40 58.2         385571    304  Cn2616      
2004 10  16.07349  00 13 53.56   +00 40 56.4         385571    304  Cn2616      
2004 10  16.11233  00 13 53.35   +00 40 54.9         385571    304  Cn2616      
2004 12  12.30201  00 10 39.61   +00 21 40.4   23.5R 385571    568  Cn2616      
2004 12  13.31117  00 10 39.46   +00 21 41.7   23.3R 385571    568  Cn2616      
2004 12  14.30574  00 10 39.44   +00 21 43.7   23.3R 385571    568  Cn2616      
2005 09  24.35444  00 24 41.17   +01 53 51.9         385571    695  Co2671      
2005 09  24.42294  00 24 40.72   +01 53 48.8         385571    695  Co2671      
2005 09  25.45316  00 24 34.35   +01 53 08.2         385571    695  Co2671      
2005 11  02.03388  00 20 55.57   +01 30 11.1         385571    304  Cq3841      
2005 11  02.07218  00 20 55.42   +01 30 10.6         385571    304  Cq3841      
2005 11  03.12634  00 20 50.33   +01 29 39.5         385571    304  Cq3841      
2006 07  28.17648  00 37 35.64   +03 20 29.3   23.0R 385571    250  S~06Al      
2006 07  28.19642  00 37 35.60   +03 20 29.1         385571    250  S~06Al      
2006 07  28.20082  00 37 35.59   +03 20 29.0         385571    250  S~06Al      
2006 07  28.24044  00 37 35.52   +03 20 28.5         385571    250  S~06Al      
2006 11  13.02120  00 28 37.662  +02 23 34.09  23.2R 385571    304  Cs8688      
2006 11  13.03580  00 28 37.625  +02 23 33.79        385571    304  Cs8688      
2013 10  05.39529  01 33 15.55   +09 27 22.3   23.1R 385571    695  C~0zdg      
2013 10  05.45855  01 33 15.14   +09 27 19.8         385571    695  C~0zdg      
2013 10  06.40358  01 33 09.23   +09 26 46.0         385571    695  C~0zdg      

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    -0.27       0.00    -1.50
  2   0.0001      0.00    -0.32       0.00     0.16
  3   0.0002      0.00    -0.04       0.00     0.06
  4   0.1568      0.00     0.26       0.00     0.40
  5   0.1596      0.00     0.09       0.00     0.37
  6   0.1623      0.00    -0.13       0.00     0.22
  7   0.9400      0.00     0.40       0.00     0.48
  8   0.9402      0.00     0.11       0.00     0.09
  9   0.9430      0.00     0.31       0.00     0.22
 10   1.0459      0.00    -0.43       0.00    -1.19
 11   1.0460      0.00     0.19       0.00    -0.54
 12   1.0489      0.00     0.54       0.00    -0.19
 13   1.7800      0.00     0.24       0.00    -0.20
 14   1.7801      0.00     0.16       0.00    -0.16
 15   1.7801      0.00     0.13       0.00    -0.21
 16   1.7802      0.00     0.12       0.00    -0.24
 17   2.0753      0.00    -0.26       0.00     0.31
 18   2.0753      0.00     0.13       0.00     0.38
 19   8.9702      0.00     0.16       0.00     0.23
 20   8.9704      0.00     0.02       0.00     0.00
 21   8.9730      0.00    -0.04       0.00     0.04

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.

385571    quality flag:3

Type:            1:1       1:1       1:1

axisobj        30.339    30.339    30.339
ecceobj         0.033     0.033     0.033
incobj          1.431     1.431     1.431
qmin           28.309    28.309    28.309
qmax           32.022    32.022    32.023
amean          30.110    30.110    30.110
amin           29.825    29.825    29.825
amax           30.425    30.425    30.426
emean           0.032     0.032     0.032
emin            0.007     0.007     0.007
emax            0.055     0.055     0.055
imean           1.959     1.959     1.960
imin            1.768     1.768     1.768
imax            2.134     2.134     2.134
excite_mean     0.047     0.047     0.047
fracstop        1.000     1.000     1.000
cjmean          2.997     2.997     2.997

libcent 0        62.2      62.2      62.2
libamp  0        18.2      18.2      18.2
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       175.1     175.1     175.1
kozaiamp        180.0     180.0     180.0