Orbit Fit and Astrometric record for 03WN193

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: 03WN193   
# Created Sat Oct 21 01:37:27 2017
# Orbit generated from Bernstein formalism
# Fitting   12 observations of   12
# Arc:  41.95d
# First observation: 2003/11/17
#  Last observation: 2003/12/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000010   0.049995   0.000015  -0.006233   0.035665   0.000000
# Chi-squared of fit:     1.87 DOF:   18 RMS:  0.07
# Min/Max residuals:    -0.13    0.14
# Exact a, adot, b, bdot, g, gdot:
  2.007382E-05  4.521114E-02 -2.272471E-06 -4.450621E-03  3.501029E-02 -2.642707E-04
# Covariance matrix:
  7.3468E-13  1.1094E-11 -4.0404E-14 -4.1435E-12  7.2611E-12  1.3008E-09
  1.1094E-11  2.6915E-08  6.2924E-11 -9.7455E-09  4.3666E-09 -5.3498E-07
 -4.0404E-14  6.2924E-11  6.1150E-13 -2.7930E-11  8.9487E-12 -1.6957E-09
 -4.1435E-12 -9.7455E-09 -2.7930E-11  3.6146E-09 -1.5589E-09  2.0320E-07
  7.2611E-12  4.3666E-09  8.9487E-12 -1.5589E-09  7.8837E-10 -6.0163E-08
  1.3008E-09 -5.3498E-07 -1.6957E-09  2.0320E-07 -6.0163E-08  1.9887E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
  -21.644066   32.765125   -0.359333   -0.339444   -0.855673  2452960.682033
# Heliocentric elements and errors
Epoch:              2452960.5000  =  2003/11/17
Mean Anomaly:            0.56797 +/-    16.061
Argument of Peri:      255.25384 +/-    27.934
Long of Asc Node:      138.28300 +/-     0.122
Inclination:            21.63269 +/-     0.011
Eccentricity:         0.25327930 +/-    0.0071
Semi-Major Axis:     39.40034885 +/-    0.4081
Time of Perihelion: 2452817.9819 +/-    4030.0
Perihelion:          29.42105599 +/-    0.4138
Aphelion:            49.37964170 +/-    0.5830
Period (y)              247.3195 +/-      3.84
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.90112027 +/-    0.0179
Ecliptic Y           15.17224631 +/-    0.0115
Ecliptic Z          -10.53527604 +/-    0.0085
Ecliptic XDOT        -0.00204206 +/-    0.0003
Ecliptic YDOT         0.00288703 +/-    0.0002
Ecliptic ZDOT        -0.00031573 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   29.42193755 +/-    0.0154
Geocenter to KBO     28.56302986 +/-    0.0229
# Hcoef:  8.31

The following table shows the complete astrometric record for 03WN193. 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 (03WN193) followed by the observatory code and reference code for the source of the astrometry.

2003 11  17.18129  02 31 33.59   -07 56 59.5   22.6I 03WN193   807  Cv6182      
2003 11  21.16380  02 31 09.64   -07 57 57.4   22.7R 03WN193   807  Cv6182      
2003 11  21.18404  02 31 09.52   -07 57 57.7   22.4I 03WN193   807  Cv6182      
2003 11  25.17863  02 30 46.23   -07 58 39.3   22.6I 03WN193   807  Cv6182      
2003 12  17.13274  02 28 58.27   -07 57 29.4   22.9R 03WN193   807  Cv6182      
2003 12  17.14800  02 28 58.22   -07 57 29.2   22.5I 03WN193   807  Cv6182      
2003 12  21.14384  02 28 43.26   -07 56 22.2   22.6I 03WN193   807  Cv6182      
2003 12  23.15342  02 28 36.40   -07 55 42.3   23.0R 03WN193   807  Cv6182      
2003 12  23.16899  02 28 36.34   -07 55 42.0   22.4I 03WN193   807  Cv6182      
2003 12  25.14399  02 28 30.04   -07 54 58.7   22.8R 03WN193   807  Cv6182      
2003 12  29.12185  02 28 18.71   -07 53 20.2   23.0R 03WN193   807  Cv6182      
2003 12  29.13389  02 28 18.68   -07 53 19.6   22.7I 03WN193   807  Cv6182      

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     0.07       0.00     0.05
  2   0.0109   -354.45    -0.01      65.62    -0.02
  3   0.0110   -356.23     0.00      65.94    -0.07
  4   0.0219   -695.95    -0.10     143.51     0.05
  5   0.0820  -2182.58    -0.08     749.47     0.03
  6   0.0820  -2183.21     0.08     749.91    -0.05
  7   0.0930  -2370.02    -0.03     887.74    -0.01
  8   0.0985  -2452.62     0.11     959.58    -0.04
  9   0.0985  -2453.35     0.00     960.16    -0.03
 10   0.1039  -2526.97     0.08    1032.40     0.06
 11   0.1148  -2652.46    -0.13    1181.75    -0.10
 12   0.1149  -2652.68    -0.00    1182.47     0.14

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.

03WN193    quality flag:1

Type:           3:2E  CENTAURR  CENTAURR
Type:          6:4II                    

axisobj        39.857    47.837    39.286
ecceobj         0.262     0.458     0.251
incobj         21.614    21.593    21.593
qmin           27.486    25.660    28.726
qmax           51.842    70.900    49.332
amean          39.454    47.886    38.793
amin           39.106    46.993    37.825
amax           39.906    48.592    39.413
emean           0.257     0.457     0.236
emin            0.194     0.447     0.189
emax            0.302     0.466     0.259
imean          19.702    20.168    20.174
imin           17.638    20.031    19.601
imax           21.540    20.282    21.111
excite_mean     0.425     0.573     0.418
fracstop        1.000     0.002     0.043
cjmean          2.845     2.740     2.850

libcent 0       179.0    -180.0    -180.0
libamp  0        27.8    -180.0    -180.0
libcent 1       181.1    -180.0    -180.0
libamp  1        93.8    -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       270.9     309.8     295.2
kozaiamp         32.6       1.6      49.8