Orbit Fit and Astrometric record for 00WL183

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: 00WL183   
# Created Wed Oct 18 01:37:09 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   6.07y
# First observation: 2000/11/26
#  Last observation: 2006/12/21
Preliminary a, adot, b, bdot, g, gdot:
   0.000031   0.020462   0.000003   0.001332   0.022278   0.000000
# Chi-squared of fit:    13.85 DOF:   28 RMS:  0.16
# Min/Max residuals:    -0.36    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.381718E-05  2.055434E-02  2.675338E-06  1.339424E-03  2.255266E-02  1.092702E-03
# Covariance matrix:
  1.8047E-13 -1.8430E-13  2.5091E-15 -1.0292E-14 -1.3558E-13 -1.2504E-12
 -1.8430E-13  6.3654E-13 -9.7580E-15  4.0204E-14  2.9610E-13  4.8630E-12
  2.5091E-15 -9.7580E-15  1.3693E-13 -2.6008E-14 -5.0610E-15 -7.6163E-14
 -1.0292E-14  4.0204E-14 -2.6008E-14  1.5421E-14  1.9990E-14  3.1363E-13
 -1.3558E-13  2.9610E-13 -5.0610E-15  1.9990E-14  1.2712E-12  2.5217E-12
 -1.2504E-12  4.8630E-12 -7.6163E-14  3.1363E-13  2.5217E-12  3.7957E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.191649   63.786002   -0.008719   -0.037622   -0.979712  2451874.628143
# Heliocentric elements and errors
Epoch:              2451870.5000  =  2000/11/22
Mean Anomaly:          118.45153 +/-     0.210
Argument of Peri:      205.48832 +/-     0.197
Long of Asc Node:       93.72821 +/-     0.002
Inclination:             4.29030 +/-     0.000
Eccentricity:         0.06233602 +/-    0.0002
Semi-Major Axis:     43.89669472 +/-    0.0079
Time of Perihelion: 2416917.5105 +/-      61.3
Perihelion:          41.16034944 +/-    0.0127
Aphelion:            46.63304000 +/-    0.0133
Period (y)              290.8412 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.00169186 +/-    0.0010
Ecliptic Y           40.63965117 +/-    0.0020
Ecliptic Z           -1.69559725 +/-    0.0001
Ecliptic XDOT        -0.00218523 +/-    0.0000
Ecliptic YDOT         0.00123112 +/-    0.0000
Ecliptic ZDOT         0.00015758 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.32685710 +/-    0.0018
Geocenter to KBO     44.34067085 +/-    0.0022
# Hcoef:  7.56

The following table shows the complete astrometric record for 00WL183. 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 (00WL183) followed by the observatory code and reference code for the source of the astrometry.

2000 11  26.12740  04 08 51.63   +18 45 17.2   23.9R 00WL183   809  Cc4044      
2000 11  26.18511  04 08 51.34   +18 45 16.6   23.8R 00WL183   809  Cc4044      
2000 11  26.23903  04 08 51.09   +18 45 16.4         00WL183   809  Cc4044      
2000 11  27.12684  04 08 46.78   +18 45 05.4   23.8R 00WL183   809  Cc4044      
2000 11  27.18142  04 08 46.54   +18 45 05.0   23.7R 00WL183   809  Cc4044      
2000 11  27.21127  04 08 46.39   +18 45 04.4   23.6R 00WL183   809  Cc4044      
2000 11  27.23691  04 08 46.26   +18 45 04.2         00WL183   809  Cc4044      
2000 11  27.26212  04 08 46.14   +18 45 03.8         00WL183   809  Cc4044      
2001 11  14.22891  04 14 40.45   +19 05 06.1   23.4R 00WL183   309  Ce3553      
2001 11  14.27014  04 14 40.26   +19 05 05.6   23.4R 00WL183   309  Ce3553      
2001 11  15.27272  04 14 35.56   +19 04 53.8   23.4R 00WL183   309  Ce3553      
2001 11  15.30503  04 14 35.42   +19 04 53.5   23.6R 00WL183   309  Ce3553      
2006 10  19.41884  04 40 38.19   +20 27 13.5   24.1R 00WL183   695  Ct7980      
2006 10  20.42290  04 40 34.98   +20 27 06.6         00WL183   695  Ct6956      
2006 10  20.47876  04 40 34.81   +20 27 06.0         00WL183   695  Ct6956      
2006 12  21.20687  04 35 59.85   +20 18 22.4   24.5R 00WL183   695  Ct5429      
2006 12  21.27788  04 35 59.49   +20 18 21.7         00WL183   695  Ct5429      

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     0.12       0.00    -0.36
  2   0.0002     -4.16     0.03       0.17    -0.25
  3   0.0003     -7.69     0.31       0.64     0.17
  4   0.0027    -69.88    -0.35       1.19    -0.00
  5   0.0029    -73.30     0.07       1.43     0.18
  6   0.0030    -75.51    -0.03       1.24    -0.05
  7   0.0030    -77.36    -0.08       1.38     0.07
  8   0.0031    -79.11    -0.05       1.31    -0.03
  9   0.9667   5084.21    -0.08     270.70     0.08
 10   0.9669   5081.47    -0.01     270.68     0.05
 11   0.9696   5013.76    -0.07     270.90     0.06
 12   0.9697   5011.76     0.14     270.95     0.11
 13   5.8954  27739.56    -0.13    1653.67     0.12
 14   5.8981  27693.10    -0.03    1653.11     0.25
 15   5.8983  27690.60     0.16    1652.85     0.02
 16   6.0673  23728.39     0.22    1686.14    -0.16
 17   6.0675  23723.21    -0.22    1686.19    -0.26

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.

00WL183    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.874    43.898    43.850
ecceobj         0.064     0.064     0.064
incobj          4.293     4.293     4.293
qmin           40.029    40.012    39.976
qmax           47.409    47.502    47.383
amean          43.602    43.625    43.578
amin           43.257    43.293    43.245
amax           43.958    43.991    43.940
emean           0.061     0.062     0.061
emin            0.042     0.041     0.041
emax            0.079     0.080     0.079
imean           2.489     2.517     2.473
imin            1.664     1.668     1.645
imax            3.235     3.308     3.204
excite_mean     0.076     0.077     0.075
fracstop        1.000     1.000     1.000
cjmean          3.090     3.090     3.090

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       176.8     175.2     177.4
kozaiamp        180.0     180.0     179.9