Orbit Fit and Astrometric record for 03WQ188

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: 03WQ188   
# Created Tue Oct 17 01:37:26 2017
# Orbit generated from Bernstein formalism
# Fitting    5 observations of    5
# Arc:  98.78d
# First observation: 2003/11/20
#  Last observation: 2004/02/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.014439   0.000000   0.001138   0.020780   0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit:     0.19 DOF:    5 RMS:  0.03
# Min/Max residuals:    -0.06    0.06
# Exact a, adot, b, bdot, g, gdot:
  1.171790E-05  1.579636E-02  9.491805E-07  1.165422E-03  2.109530E-02 -1.008144E-02
# Covariance matrix:
  1.5677E-11  2.1318E-08 -1.3755E-12  3.7917E-10  4.0461E-09  2.9681E-08
  2.1318E-08  3.0024E-05 -1.9328E-09  5.3331E-07  5.6850E-06  3.9172E-05
 -1.3755E-12 -1.9328E-09  6.1515E-13 -3.6184E-11 -3.6657E-10 -2.6423E-09
  3.7917E-10  5.3331E-07 -3.6184E-11  9.4945E-09  1.0107E-07  7.1449E-07
  4.0461E-09  5.6850E-06 -3.6657E-10  1.0107E-07  1.0782E-06  7.7863E-06
  2.9681E-08  3.9172E-05 -2.6423E-09  7.1449E-07  7.7863E-06  1.2589E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.735065   95.980314    0.615580    0.063773   -0.769237  2452963.967653
# Heliocentric elements and errors
Epoch:              2452960.5000  =  2003/11/17
Mean Anomaly:          298.53995 +/-    86.026
Argument of Peri:      173.21232 +/-    25.141
Long of Asc Node:       47.85341 +/-     7.382
Inclination:             6.31743 +/-     0.744
Eccentricity:         0.54882824 +/-    0.4998
Semi-Major Axis:     46.89807333 +/-   22.8694
Time of Perihelion: 2472987.7525 +/-   23900.1
Perihelion:          21.15908627 +/-   25.6097
Aphelion:            72.63706038 +/-   42.4738
Period (y)              321.1742 +/-    234.93
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -4.39398930 +/-    0.2421
Ecliptic Y           47.81987492 +/-    2.3128
Ecliptic Z            3.91316168 +/-    0.1926
Ecliptic XDOT        -0.00190631 +/-    0.0007
Ecliptic YDOT        -0.00152903 +/-    0.0014
Ecliptic ZDOT         0.00004289 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   48.18049827 +/-    2.2956
Geocenter to KBO     47.40391636 +/-    2.3334
# Hcoef:  5.76

The following table shows the complete astrometric record for 03WQ188. 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 (03WQ188) followed by the observatory code and reference code for the source of the astrometry.

2003 11  20.46691  06 27 01.33   +28 02 03.2   22.6R 03WQ188   695  Cj5854      
2003 11  20.52577  06 27 01.10   +28 02 03.6         03WQ188   695  Cj5854      
2003 11  21.51432  06 26 57.27   +28 02 10.4         03WQ188   695  Cj5854      
2004 02  27.13027  06 20 01.50   +28 04 59.3   22.0R 03WQ188   695  Ck0875      
2004 02  27.24807  06 20 01.26   +28 04 58.7         03WQ188   695  Ck0875      

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     0.03       0.00    -0.02
  2   0.0002     -3.06     0.02       0.26    -0.01
  3   0.0029    -54.03    -0.05       4.67     0.02
  4   0.2701  -5561.19     0.00     -45.12     0.06
  5   0.2704  -5564.35    -0.00     -45.82    -0.06

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.

03WQ188    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0