Orbit Fit and Astrometric record for 05BW49

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: 05BW49    
# Created Sat Oct 20 01:08:27 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   22 observations of   22
# Arc:   8.99y
# First observation: 2004/03/18
#  Last observation: 2013/03/14
# Chi-squared of fit:    23.59 DOF:   38 RMS:  0.18
# Min/Max residuals:    -0.40    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.558379E-05  2.380061E-02  2.121787E-06  4.009028E-04  2.409413E-02 -1.982466E-03
# Covariance matrix:
  3.7871E-13 -1.4366E-13  3.1987E-15 -1.9264E-15 -1.0532E-13 -4.7689E-13
 -1.4366E-13  3.7158E-13 -5.0636E-15  6.4367E-15 -3.2456E-13  1.6250E-12
  3.1987E-15 -5.0636E-15  1.6063E-13 -2.8167E-14  2.7008E-15 -2.2308E-14
 -1.9264E-15  6.4367E-15 -2.8167E-14  8.5963E-15 -5.8946E-15  2.8833E-14
 -1.0532E-13 -3.2456E-13  2.7008E-15 -5.8946E-15  5.3013E-13 -1.4990E-12
 -4.7689E-13  1.6250E-12 -2.2308E-14  2.8833E-14 -1.4990E-12  7.2812E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.914311  121.772510   -0.824591    0.018456   -0.550533  2453082.726430
# Heliocentric elements and errors
Epoch:              2453082.5000  =  2004/03/18
Mean Anomaly:          312.86076 +/-     0.094
Argument of Peri:      118.49094 +/-     0.117
Long of Asc Node:       59.06468 +/-     0.006
Inclination:             2.10431 +/-     0.000
Eccentricity:         0.08325151 +/-    0.0000
Semi-Major Axis:     44.40092081 +/-    0.0070
Time of Perihelion: 2467232.8257 +/-      35.9
Perihelion:          40.70447724 +/-    0.0067
Aphelion:            48.09736438 +/-    0.0078
Period (y)              295.8668 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.83693013 +/-    0.0007
Ecliptic Y           35.30074966 +/-    0.0011
Ecliptic Z            1.38653452 +/-    0.0000
Ecliptic XDOT        -0.00218332 +/-    0.0000
Ecliptic YDOT        -0.00162354 +/-    0.0000
Ecliptic ZDOT         0.00003814 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.06654631 +/-    0.0010
Geocenter to KBO     41.50399504 +/-    0.0013
# Hcoef:  6.90

The following table shows the complete astrometric record for 05BW49. 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 (05BW49) followed by the observatory code and reference code for the source of the astrometry.

2004 03  18.225687 08 17 55.26   +21 37 51.7   22.6V 05BW49    645  C~2JxC      
2004 03  18.226516 08 17 55.26   +21 37 51.7   22.7V 05BW49    645  C~2JxC      
2004 03  18.229004 08 17 55.26   +21 37 51.7   23.3V 05BW49    645  C~2JxC      
2005 01  16.36263  08 28 08.35   +21 06 03.5   22.9g 05BW49    568  C~0VDy      
2005 01  16.40043  08 28 08.16   +21 06 04.2   23.1g 05BW49    568  C~0VDy      
2006 02  01.39642  08 32 34.68   +20 51 52.1   22.9r 05BW49    568  C~0VDy      
2006 02  01.44282  08 32 34.43   +20 51 53.0   22.9r 05BW49    568  C~0VDy      
2006 02  01.48348  08 32 34.22   +20 51 53.7   22.7r 05BW49    568  C~0VDy      
2006 11  23.50049  08 42 54.41   +20 13 14.3         05BW49    568  C~0VDy      
2006 11  24.49147  08 42 52.96   +20 13 22.9   22.6i 05BW49    568  C~0VDy      
2006 11  24.54300  08 42 52.88   +20 13 23.4   22.7i 05BW49    568  C~0VDy      
2006 11  24.59500  08 42 52.79   +20 13 23.8   22.7i 05BW49    568  C~0VDy      
2007 01  19.31674  08 39 29.06   +20 27 58.1         05BW49    568  C~0VDy      
2007 01  19.35945  08 39 28.84   +20 27 58.8   23.4g 05BW49    568  C~0VDy      
2007 01  19.39213  08 39 28.68   +20 27 59.4   22.9g 05BW49    568  C~0VDy      
2007 01  20.38005  08 39 23.68   +20 28 18.7         05BW49    568  C~0VDy      
2010 01  21.34468  08 56 31.23   +19 24 54.9         05BW49    568  C~0VDy      
2010 01  21.38190  08 56 31.05   +19 24 55.6         05BW49    568  C~0VDy      
2010 01  21.41294  08 56 30.89   +19 24 56.6         05BW49    568  C~0VDy      
2013 03  13.17463  09 09 40.55   +18 31 34.9   22.6R 05BW49    695  C~0udE      
2013 03  14.16236  09 09 36.82   +18 31 49.2         05BW49    695  C~0udE      
2013 03  14.25102  09 09 36.50   +18 31 50.3         05BW49    695  C~0udE      

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    -0.06       0.00    -0.38
  2   0.0000      0.00    -0.02       0.00    -0.38
  3   0.0000      0.00     0.07       0.00    -0.40
  4   0.8327      0.00     0.05       0.00     0.21
  5   0.8328      0.00     0.13       0.00     0.22
  6   1.8759      0.00     0.04       0.00     0.12
  7   1.8760      0.00    -0.10       0.00     0.19
  8   1.8761      0.00    -0.09       0.00     0.16
  9   2.6838      0.00    -0.02       0.00    -0.13
 10   2.6866      0.00     0.04       0.00     0.00
 11   2.6867      0.00     0.06       0.00     0.04
 12   2.6868      0.00    -0.03       0.00    -0.02
 13   2.8394      0.00     0.10       0.00     0.10
 14   2.8395      0.00     0.07       0.00    -0.04
 15   2.8396      0.00     0.19       0.00    -0.08
 16   2.8423      0.00     0.09       0.00     0.08
 17   5.8456      0.00     0.16       0.00     0.20
 18   5.8457      0.00     0.27       0.00     0.11
 19   5.8458      0.00     0.22       0.00     0.45
 20   8.9855      0.00     0.09       0.00    -0.20
 21   8.9882      0.00    -0.27       0.00    -0.18
 22   8.9884      0.00    -0.02       0.00    -0.34

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.

05BW49    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.171    44.171    44.171
ecceobj         0.077     0.076     0.077
incobj          2.101     2.101     2.101
qmin           39.830    39.856    39.845
qmax           48.709    48.712    48.700
amean          44.145    44.145    44.145
amin           43.791    43.797    43.795
amax           44.522    44.525    44.518
emean           0.077     0.077     0.077
emin            0.061     0.061     0.061
emax            0.094     0.094     0.094
imean           1.209     1.209     1.209
imin            0.326     0.326     0.325
imax            1.887     1.888     1.888
excite_mean     0.081     0.081     0.081
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.095

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       171.7     171.9     171.9
kozaiamp        180.0     180.0     180.0