Orbit Fit and Astrometric record for 385201

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: 385201    
# Created Thu Dec 14 02:36:44 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   31 observations of   31
# Arc:  14.08y
# First observation: 1999/09/07
#  Last observation: 2013/10/06
# Chi-squared of fit:   128.40 DOF:   56 RMS:  0.36
# Min/Max residuals:    -1.16    0.84
# Exact a, adot, b, bdot, g, gdot:
  1.441679E-05  2.067130E-02 -2.014975E-06 -3.001327E-03  2.275384E-02  1.503519E-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
   -9.399731    8.643998    0.413697   -0.149078   -0.899169  2451429.011913
# Heliocentric elements and errors
Epoch:              2451428.5000  =  1999/09/07
Mean Anomaly:          113.40560 +/-     0.000
Argument of Peri:      107.86242 +/-     0.000
Long of Asc Node:      140.58762 +/-     0.000
Inclination:            12.39569 +/-     0.000
Eccentricity:         0.06825523 +/-    0.0000
Semi-Major Axis:     43.51421664 +/-    0.0000
Time of Perihelion: 2418400.8862 +/-       0.0
Perihelion:          40.54414359 +/-    0.0000
Aphelion:            46.48428970 +/-    0.0000
Period (y)              287.0483 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.83687231 +/-    0.0000
Ecliptic Y            6.24704139 +/-    0.0000
Ecliptic Z           -7.17782780 +/-    0.0000
Ecliptic XDOT        -0.00025977 +/-    0.0000
Ecliptic YDOT         0.00248530 +/-    0.0000
Ecliptic ZDOT        -0.00038577 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.85771523 +/-    0.0000
Geocenter to KBO     43.94861173 +/-    0.0000
# Hcoef:  6.58

The following table shows the complete astrometric record for 385201. 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 (385201) followed by the observatory code and reference code for the source of the astrometry.

1999 09  07.51117  00 46 34.72   -05 12 47.8   22.7R 385201    568  Ca9937      
1999 09  07.55015  00 46 34.56   -05 12 48.6   22.6R 385201    568  Ca9937      
1999 09  07.59142  00 46 34.41   -05 12 50.2   22.8R 385201    568  Ca9937      
1999 09  09.58802  00 46 27.11   -05 13 51.4   22.9R 385201    568  Ca9937      
1999 09  09.59815  00 46 27.07   -05 13 51.8   23.1R 385201    568  Ca9937      
1999 10  09.52946  00 44 25.36   -05 28 36.5   23.0R 385201    568  Ca9937      
1999 10  10.36662  00 44 21.85   -05 28 59.0   22.9R 385201    568  Ca9937      
1999 10  10.40770  00 44 21.67   -05 29 00.2   22.5R 385201    568  Ca9937      
1999 11  10.42344  00 42 22.52   -05 39 36.8   22.8R 385201    568  Ca9937      
1999 11  10.45826  00 42 22.40   -05 39 37.3   23.0R 385201    568  Ca9937      
2000 08  28.49536  00 51 44.75   -04 49 25.6   22.9R 385201    568  Cb9109      
2000 08  28.55058  00 51 44.59   -04 49 27.4   22.9R 385201    568  Cb9109      
2000 08  29.54245  00 51 41.44   -04 49 57.2   22.9R 385201    568  Cb9109      
2000 08  29.57883  00 51 41.34   -04 49 57.9   22.9R 385201    568  Cb9109      
2000 12  27.24300  00 45 40.145  -05 21 09.27        385201    568  Cl2529      
2000 12  28.25263  00 45 40.385  -05 20 55.16  22.9R 385201    568  Cl2529      
2002 11  06.44491  00 56 27.58   -04 42 58.2   22.6R 385201    568  Cl8251      
2002 11  07.34025  00 56 24.33   -04 43 12.8         385201    568  Cl8251      
2002 11  07.38084  00 56 24.20   -04 43 13.1         385201    568  Cl8251      
2005 10  06.26674  01 12 16.46   -03 34 52.4   22.3R 385201    250  S~06AL      
2005 10  06.27345  01 12 16.43   -03 34 52.6         385201    250  S~06AL      
2005 10  06.28016  01 12 16.40   -03 34 52.8         385201    250  S~06AL      
2008 10  31.307567 01 24 07.52   -02 48 28.2         385201    645  C~1Q2f      
2008 10  31.308396 01 24 07.52   -02 48 28.2         385201    645  C~1Q2f      
2008 10  31.310884 01 24 07.51   -02 48 28.3         385201    645  C~1Q2f      
2009 01  16.138895 01 21 41.26   -02 48 50.8         385201    645  C~1Q2f      
2009 01  16.139724 01 21 41.26   -02 48 50.8         385201    645  C~1Q2f      
2009 01  16.142212 01 21 41.27   -02 48 50.8         385201    645  C~1Q2f      
2013 10  05.41001  01 48 28.07   -01 02 23.6   22.2R 385201    695  C~0zdB      
2013 10  05.47352  01 48 27.82   -01 02 25.3         385201    695  C~0zdB      
2013 10  06.41862  01 48 23.97   -01 02 51.8         385201    695  C~0zdB      

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    -0.17       0.00    -1.16
  2   0.0001      0.00    -0.20       0.00     0.40
  3   0.0002      0.00    -0.16       0.00     0.07
  4   0.0057      0.00     0.14       0.00     0.34
  5   0.0057      0.00     0.11       0.00     0.26
  6   0.0877      0.00     0.30       0.00     0.02
  7   0.0900      0.00     0.29       0.00    -0.18
  8   0.0901      0.00     0.22       0.00    -0.29
  9   0.1750      0.00     0.01       0.00    -0.31
 10   0.1751      0.00    -0.06       0.00    -0.35
 11   0.9746      0.00    -0.06       0.00     0.37
 12   0.9748      0.00     0.19       0.00     0.22
 13   0.9775      0.00    -0.16       0.00    -0.01
 14   0.9776      0.00     0.11       0.00     0.38
 15   1.3052      0.00    -0.24       0.00     0.84
 16   1.3080      0.00    -0.11       0.00     0.81
 17   3.1648      0.00     0.22       0.00    -0.30
 18   3.1672      0.00    -0.49       0.00    -0.49
 19   3.1673      0.00    -0.22       0.00    -0.14
 20   6.0801      0.00     0.26       0.00    -0.74
 21   6.0801      0.00     0.24       0.00    -0.75
 22   6.0801      0.00     0.21       0.00    -0.76
 23   9.1493      0.00     0.03       0.00    -0.08
 24   9.1493      0.00     0.08       0.00    -0.06
 25   9.1493      0.00     0.08       0.00    -0.11
 26   9.3597      0.00     0.25       0.00    -0.10
 27   9.3597      0.00     0.23       0.00    -0.12
 28   9.3597      0.00     0.35       0.00    -0.17
 29  14.0778      0.00    -0.10       0.00     0.44
 30  14.0779      0.00     0.04       0.00     0.52
 31  14.0805      0.00    -0.37       0.00     0.42

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.

385201    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.489    43.489    43.489
ecceobj         0.068     0.068     0.068
incobj         12.400    12.400    12.400
qmin           39.607    39.609    39.610
qmax           47.043    47.044    47.042
amean          43.228    43.228    43.228
amin           42.893    42.893    42.893
amax           43.578    43.579    43.576
emean           0.065     0.065     0.065
emin            0.052     0.051     0.052
emax            0.080     0.080     0.080
imean          11.345    11.345    11.345
imin           10.803    10.803    10.803
imax           12.029    12.029    12.027
excite_mean     0.207     0.207     0.207
fracstop        1.000     1.000     1.000
cjmean          3.041     3.041     3.041

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       183.5     183.5     183.5
kozaiamp        180.0     180.0     180.0