Orbit Fit and Astrometric record for 385266

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: 385266    
# Created Tue Oct 24 01:36:44 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   29 observations of   29
# Arc:  12.13y
# First observation: 2001/08/20
#  Last observation: 2013/10/07
# Chi-squared of fit:    44.61 DOF:   52 RMS:  0.22
# Min/Max residuals:    -1.02    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.645242E-05  2.755229E-02  9.421101E-07  7.263457E-04  2.631664E-02  1.240242E-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
    1.005595  -35.431120   -0.039661    0.017655   -1.011701  2452141.626763
# Heliocentric elements and errors
Epoch:              2452142.5000  =  2001/08/21
Mean Anomaly:           25.11882 +/-     0.000
Argument of Peri:        2.62823 +/-     0.000
Long of Asc Node:      291.82895 +/-     0.000
Inclination:             1.80750 +/-     0.000
Eccentricity:         0.09351355 +/-    0.0000
Semi-Major Axis:     42.53448587 +/-    0.0000
Time of Perihelion: 2445072.7017 +/-       0.0
Perihelion:          38.55693502 +/-    0.0000
Aphelion:            46.51203672 +/-    0.0000
Period (y)              277.4086 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.80764834 +/-    0.0000
Ecliptic Y          -22.57364828 +/-    0.0000
Ecliptic Z            0.66690921 +/-    0.0000
Ecliptic XDOT         0.00175713 +/-    0.0000
Ecliptic YDOT         0.00226290 +/-    0.0000
Ecliptic ZDOT         0.00007803 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.00946977 +/-    0.0000
Geocenter to KBO     37.99878342 +/-    0.0000
# Hcoef:  6.91

The following table shows the complete astrometric record for 385266. 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 (385266) followed by the observatory code and reference code for the source of the astrometry.

2001 08  20.12602  21 46 05.22   -12 23 02.6   21.5R 385266    807  Cd7926      
2001 08  20.20431  21 46 04.84   -12 23 04.5         385266    807  Cd7926      
2001 08  21.13965  21 46 00.22   -12 23 28.1   21.5R 385266    807  Cd7926      
2001 08  21.21386  21 45 59.84   -12 23 29.9         385266    807  Cd7926      
2001 09  12.23025  21 44 16.19   -12 32 22.8   22.3R 385266    695  Cd7926      
2001 09  12.27730  21 44 16.00   -12 32 23.7         385266    695  Cd7926      
2002 08  09.16131  21 53 00.80   -11 44 22.6   21.1R 385266    807  Cg3217      
2002 08  09.30756  21 53 00.08   -11 44 26.0         385266    807  Cg3217      
2002 08  10.34052  21 52 55.03   -11 44 51.7         385266    807  Cg3218      
2002 11  06.26135  21 47 58.96   -12 11 26.7   22.5R 385266    568  Cl8341      
2002 11  07.23487  21 47 58.94   -12 11 27.6         385266    568  Cl8341      
2003 06  23.51400  22 01 53.48   -10 55 20.3   22.9i 385266    568  Cq9101      
2003 06  23.56540  22 01 53.38   -10 55 20.7   22.7i 385266    568  Cq9101      
2003 06  23.61406  22 01 53.25   -10 55 21.3   22.7i 385266    568  Cq9101      
2003 08  31.32283  21 57 11.74   -11 19 24.4   22.7g 385266    568  Cq9101      
2003 08  31.35679  21 57 11.57   -11 19 25.5   23.0g 385266    568  Cq9101      
2003 08  31.38376  21 57 11.44   -11 19 26.1   23.1g 385266    568  Cq9101      
2004 06  24.48281  22 07 39.99   -10 21 09.0   22.3R 385266    568  Ck9812      
2004 06  24.58112  22 07 39.76   -10 21 10.0         385266    568  Ck9812      
2004 08  12.40035  22 04 35.64   -10 36 55.0   22.7r 385266    568  Cq9101      
2004 08  12.43057  22 04 35.49   -10 36 56.0   22.6r 385266    568  Cq9101      
2004 08  12.46510  22 04 35.32   -10 36 56.6   22.6r 385266    568  Cq9101      
2004 08  14.42398  22 04 25.91   -10 37 46.9   22.6r 385266    568  Cq9101      
2007 05  23.05031  22 25 06.65   -08 36 29.4   23.0R 385266    250  S~06AQ      
2007 05  23.05725  22 25 06.66   -08 36 29.4         385266    250  S~06AQ      
2007 05  23.06420  22 25 06.66   -08 36 29.3         385266    250  S~06AQ      
2007 05  23.07114  22 25 06.67   -08 36 29.2         385266    250  S~06AQ      
2013 10  06.30376  22 52 14.52   -05 38 47.2   22.5R 385266    695  C~0zdD      
2013 10  07.20161  22 52 11.09   -05 39 09.1         385266    695  C~0zdD      

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    -0.16       0.00    -1.02
  2   0.0002      0.00     0.31       0.00    -0.00
  3   0.0028      0.00     0.22       0.00    -0.11
  4   0.0030      0.00     0.10       0.00    -0.04
  5   0.0633      0.00    -0.06       0.00    -0.08
  6   0.0634      0.00     0.21       0.00     0.08
  7   0.9693      0.00     0.35       0.00    -0.08
  8   0.9697      0.00     0.35       0.00     0.15
  9   0.9725      0.00    -0.22       0.00     0.17
 10   1.2132      0.00    -0.14       0.00    -0.23
 11   1.2159      0.00     0.09       0.00     0.35
 12   1.8409      0.00    -0.22       0.00    -0.11
 13   1.8410      0.00     0.04       0.00     0.01
 14   1.8412      0.00    -0.24       0.00    -0.11
 15   2.0293      0.00    -0.10       0.00     0.19
 16   2.0294      0.00    -0.16       0.00    -0.03
 17   2.0295      0.00    -0.13       0.00     0.06
 18   2.8456      0.00    -0.04       0.00    -0.23
 19   2.8459      0.00    -0.13       0.00    -0.22
 20   2.9795      0.00     0.06       0.00     0.00
 21   2.9796      0.00     0.03       0.00    -0.22
 22   2.9797      0.00     0.01       0.00     0.07
 23   2.9851      0.00     0.40       0.00     0.17
 24   5.7548      0.00     0.03       0.00     0.24
 25   5.7548      0.00     0.04       0.00     0.18
 26   5.7548      0.00    -0.09       0.00     0.21
 27   5.7548      0.00    -0.07       0.00     0.24
 28  12.1292      0.00    -0.02       0.00    -0.26
 29  12.1316      0.00     0.13       0.00    -0.08

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.

385266    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.775    42.775    42.775
ecceobj         0.098     0.098     0.098
incobj          1.803     1.803     1.803
qmin           37.526    37.550    37.585
qmax           48.081    48.128    48.160
amean          42.698    42.673    42.676
amin           42.335    42.322    42.320
amax           43.083    43.065    43.095
emean           0.090     0.088     0.088
emin            0.059     0.056     0.056
emax            0.117     0.118     0.118
imean           4.285     4.265     4.291
imin            2.743     2.708     2.761
imax            5.564     5.567     5.542
excite_mean     0.117     0.116     0.116
fracstop        1.000     1.000     1.000
cjmean          3.069     3.069     3.069

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       178.3     178.6     178.4
kozaiamp        180.0     180.0     180.0