Orbit Fit and Astrometric record for 03WA191

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: 03WA191   
# Created Fri Dec 15 02:37:16 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   22
# Arc:  11.24y
# First observation: 2003/11/23
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000079   0.043385   0.000019  -0.001702   0.033338   0.000000
# Chi-squared of fit:     4.85 DOF:   34 RMS:  0.09
# Min/Max residuals:    -0.20    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.690516E-05  4.328355E-02  3.193208E-06 -1.685274E-03  3.418210E-02  1.971605E-03
# Covariance matrix:
  3.1319E-13 -1.9212E-13 -9.8635E-15  6.2281E-15  2.2392E-13 -4.2877E-13
 -1.9212E-13  1.8436E-13  1.0781E-14 -6.3597E-15 -2.9111E-13  4.5722E-13
 -9.8635E-15  1.0781E-14  1.3830E-13 -1.8690E-14 -2.2521E-14  2.8781E-14
  6.2281E-15 -6.3597E-15 -1.8690E-14  5.4370E-15  9.8454E-15 -1.6107E-14
  2.2392E-13 -2.9111E-13 -2.2521E-14  9.8454E-15  9.6447E-13 -8.6738E-13
 -4.2877E-13  4.5722E-13  2.8781E-14 -1.6107E-14 -8.6738E-13  1.1984E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.061222   59.551128   -0.011794   -0.069813   -0.984013  2452966.767343
# Heliocentric elements and errors
Epoch:              2452960.5000  =  2003/11/17
Mean Anomaly:            7.88590 +/-     0.003
Argument of Peri:      227.21149 +/-     0.004
Long of Asc Node:      179.29682 +/-     0.001
Inclination:             4.52100 +/-     0.000
Eccentricity:         0.23681192 +/-    0.0001
Semi-Major Axis:     39.42452063 +/-    0.0075
Time of Perihelion: 2450979.8998 +/-       0.5
Perihelion:          30.08832426 +/-    0.0076
Aphelion:            48.76071700 +/-    0.0106
Period (y)              247.5471 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.27442219 +/-    0.0004
Ecliptic Y           26.01669035 +/-    0.0007
Ecliptic Z           -2.07181868 +/-    0.0001
Ecliptic XDOT        -0.00291820 +/-    0.0000
Ecliptic YDOT         0.00187827 +/-    0.0000
Ecliptic ZDOT        -0.00014567 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.24018159 +/-    0.0007
Geocenter to KBO     29.25508164 +/-    0.0008
# Hcoef:  8.28

The following table shows the complete astrometric record for 03WA191. 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 (03WA191) followed by the observatory code and reference code for the source of the astrometry.

2003 11  23.26660  03 53 01.93   +16 05 09.0   21.9R 03WA191   695  Cl9848      
2003 11  23.32141  03 53 01.51   +16 05 08.4         03WA191   695  Cl9848      
2003 11  23.37612  03 53 01.14   +16 05 07.3         03WA191   695  Cl9848      
2004 03  15.12720  03 49 09.24   +16 02 44.5   22.5R 03WA191   695  Cl9848      
2004 03  15.17369  03 49 09.46   +16 02 45.6         03WA191   695  Cl9848      
2004 11  09.43540  04 04 38.42   +16 34 14.4   21.7R 03WA191   695  Cl9848      
2004 11  10.38137  04 04 32.38   +16 33 54.3         03WA191   695  Cl9848      
2004 11  10.45652  04 04 31.88   +16 33 52.8         03WA191   695  Cl9848      
2004 12  04.37762  04 01 53.59   +16 25 56.2   22.5R 03WA191   688  Cm1170      
2004 12  04.45015  04 01 53.22   +16 25 53.9         03WA191   688  Cm1170      
2005 10  27.51902  04 16 05.68   +17 00 48.5   27.6R 03WA191   568  Cp2052      
2005 10  27.59415  04 16 05.24   +17 00 47.3         03WA191   568  Cp2052      
2005 11  02.31012  04 15 32.78   +16 58 56.0   21.7R 03WA191   695  Cp0704      
2005 11  02.36791  04 15 32.44   +16 58 55.1         03WA191   695  Cp0704      
2005 11  02.42396  04 15 32.10   +16 58 53.9         03WA191   695  Cp0704      
2008 11  13.19958  04 44 42.33   +17 50 15.6         03WA191   250  S~06Ag      
2008 11  13.21138  04 44 42.26   +17 50 15.5         03WA191   250  S~06Ag      
2008 11  13.21763  04 44 42.22   +17 50 15.4         03WA191   250  S~06Ag      
2008 11  13.22458  04 44 42.17   +17 50 15.3         03WA191   250  S~06Ag      
2015 02  18.13321  05 35 08.14   +18 44 21.0   21.7R 03WA191   695  C~1M69      
2015 02  18.17916  05 35 08.04   +18 44 21.3         03WA191   695  C~1M69      
2015 02  18.22658  05 35 07.93   +18 44 21.5         03WA191   695  C~1M69      

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 (   0.64)      0.00 (  -0.82)
  2   0.0002     -6.04     0.08       0.68    -0.12
  3   0.0003    -11.49     0.09       0.73    -0.04
  4   0.3090  -3308.67    -0.03     570.18    -0.16
  5   0.3091  -3305.33    -0.05     570.57    -0.05
  6   0.9642  10179.72    -0.01    -325.05     0.10
  7   0.9668  10090.42     0.05    -327.75    -0.08
  8   0.9670  10083.05    -0.08    -327.81     0.04
  9   1.0325   7752.80     0.02    -345.11     0.06
 10   1.0327   7747.12 (   1.39)   -346.30 (  -1.21)
 11   1.9281  20228.69     0.05    -624.60    -0.17
 12   1.9283  20222.20    -0.20    -624.63     0.14
 13   1.9440  19739.61    -0.08    -649.36    -0.06
 14   1.9442  19734.60     0.06    -649.36     0.15
 15   1.9443  19729.54    -0.01    -649.65     0.06
 16   4.9745  45608.28     0.03   -1738.66    -0.00
 17   4.9745  45607.23     0.09   -1738.61     0.07
 18   4.9745  45606.62     0.06   -1738.63     0.07
 19   4.9746  45605.86    -0.04   -1738.62     0.09
 20  11.2385  93845.67     0.09   -3469.38     0.00
 21  11.2386  93843.99     0.04   -3468.93    -0.01
 22  11.2388  93842.13    -0.15   -3468.57    -0.12

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.

03WA191    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.754    39.777    39.731
ecceobj         0.243     0.244     0.243
incobj          4.512     4.512     4.512
qmin           29.752    29.759    29.736
qmax           49.686    49.713    49.726
amean          39.455    39.455    39.456
amin           39.062    39.063    39.040
amax           39.922    39.919    39.954
emean           0.220     0.221     0.219
emin            0.196     0.199     0.196
emax            0.245     0.245     0.245
imean           5.632     5.595     5.677
imin            4.104     4.096     4.109
imax            6.939     6.854     7.000
excite_mean     0.242     0.242     0.241
fracstop        1.000     1.000     1.000
cjmean          2.985     2.985     2.985

libcent 0       180.0     179.7     179.3
libamp  0        59.3      49.7      69.5
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       156.5     155.5     158.1
kozaiamp        180.0     180.0     179.9