Orbit Fit and Astrometric record for 182223

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: 182223    
# Created Thu Dec 14 02:36:40 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   27 observations of   27
# Arc:   7.21y
# First observation: 2000/12/17
#  Last observation: 2008/03/05
# Chi-squared of fit:   156.32 DOF:   48 RMS:  0.43
# Min/Max residuals:    -0.70    1.14
# Exact a, adot, b, bdot, g, gdot:
  1.672913E-05  2.837321E-02 -6.216018E-06 -1.013424E-02  2.630856E-02  5.716646E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.964249   54.937724   -0.500733   -0.043663   -0.839920  2451895.605493
# Heliocentric elements and errors
Epoch:              2451896.5000  =  2000/12/18
Mean Anomaly:           17.66064 +/-     0.000
Argument of Peri:      146.92497 +/-     0.000
Long of Asc Node:      227.59981 +/-     0.000
Inclination:            19.82571 +/-     0.000
Eccentricity:         0.39081853 +/-    0.0000
Semi-Major Axis:     59.25923661 +/-    0.0000
Time of Perihelion: 2443722.4660 +/-       0.0
Perihelion:          36.09962903 +/-    0.0000
Aphelion:            82.41884419 +/-    0.0000
Period (y)              456.1863 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           21.88402514 +/-    0.0000
Ecliptic Y           32.05228155 +/-    0.0000
Ecliptic Z           -1.96585034 +/-    0.0000
Ecliptic XDOT        -0.00211494 +/-    0.0000
Ecliptic YDOT         0.00214205 +/-    0.0000
Ecliptic ZDOT        -0.00108382 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.86017440 +/-    0.0000
Geocenter to KBO     38.01034604 +/-    0.0000
# Hcoef:  7.50

The following table shows the complete astrometric record for 182223. 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 (182223) followed by the observatory code and reference code for the source of the astrometry.

2000 12  17.10475  03 33 19.49   +16 07 25.0   22.8R 182223    695  Cc4111      
2000 12  17.15640  03 33 19.28   +16 07 24.1   22.6R 182223    695  Cc4111      
2000 12  17.20342  03 33 19.03   +16 07 23.2         182223    695  Cc4111      
2000 12  17.39258  03 33 18.23   +16 07 20.0         182223    695  Cc4111      
2000 12  18.10599  03 33 15.16   +16 07 06.0         182223    695  Cc4111      
2000 12  18.16722  03 33 14.89   +16 07 04.9         182223    695  Cc4111      
2001 02  14.88915  03 31 30.07   +15 59 18.4   23.6R 182223    950  Cc6738      
2001 02  16.84328  03 31 32.63   +15 59 26.3         182223    950  Cc6738      
2001 02  16.91160  03 31 32.73   +15 59 26.2         182223    950  Cc6738      
2001 09  20.46765  03 46 47.46   +16 27 50.0         182223    675  Ce0234      
2001 09  20.47640  03 46 47.45   +16 27 50.0         182223    675  Ce0234      
2001 09  21.37321  03 46 45.70   +16 27 35.9         182223    675  Ce0234      
2001 09  21.44255  03 46 45.57   +16 27 34.7   23.1R 182223    675  Ce0234      
2001 09  21.50335  03 46 45.45   +16 27 33.6   23.1R 182223    675  Ce0234      
2001 11  09.47161  03 43 36.54   +16 10 03.3         182223    568  Ce0234      
2001 11  09.58725  03 43 35.96   +16 10 00.5         182223    568  Ce0234      
2002 11  11.25938  03 50 30.23   +15 57 14.7         182223    695  Cg5722      
2002 11  12.27144  03 50 25.17   +15 56 50.9   22.2R 182223    695  Cg5722      
2002 11  12.37216  03 50 24.66   +15 56 49.0   23.9R 182223    695  Cg5722      
2002 11  12.42960  03 50 24.37   +15 56 47.3   23.5R 182223    695  Cg5722      
2007 09  17.47917  04 26 43.93   +15 04 18.3         182223    675  Cy6674      
2007 09  17.48758  04 26 43.88   +15 04 17.5         182223    675  Cy6674      
2007 09  17.49591  04 26 43.90   +15 04 17.2         182223    675  Cy6674      
2007 09  18.47993  04 26 43.19   +15 04 01.5         182223    675  Cy6674      
2007 09  18.48562  04 26 43.19   +15 04 00.9   23.4R 182223    675  Cy6674      
2008 03  04.13540  04 18 23.77   +14 34 24.9         182223    695  Cy7585      
2008 03  05.12529  04 18 25.52   +14 34 34.7         182223    695  Cy7585      

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     0.41
  2   0.0001      0.00     0.39       0.00     0.11
  3   0.0003      0.00    -0.23       0.00     0.08
  4   0.0008      0.00     0.30       0.00     0.44
  5   0.0027      0.00     0.15       0.00    -0.38
  6   0.0029      0.00     0.12       0.00    -0.37
  7   0.1637      0.00    -0.30       0.00    -0.16
  8   0.1690      0.00     0.11       0.00     0.28
  9   0.1692      0.00     0.25       0.00    -0.09
 10   0.7594      0.00    -0.70       0.00    -0.54
 11   0.7594      0.00    -0.58       0.00    -0.40
 12   0.7619      0.00    -0.50       0.00     0.59
 13   0.7620      0.00    -0.28       0.00     0.55
 14   0.7622      0.00    -0.17       0.00     0.48
 15   0.8963      0.00    -0.30       0.00     0.09
 16   0.8966      0.00    -0.01       0.00     0.04
 17   1.9005      0.00    -0.63       0.00     0.27
 18   1.9033      0.00     0.83       0.00    -0.46
 19   1.9035      0.00     1.02       0.00    -0.07
 20   1.9037      0.00     1.14       0.00    -0.45
 21   6.7498      0.00     0.47       0.00     0.66
 22   6.7499      0.00    -0.18       0.00    -0.00
 23   6.7499      0.00     0.21       0.00    -0.17
 24   6.7526      0.00     0.22       0.00     0.16
 25   6.7526      0.00     0.29       0.00    -0.34
 26   7.2116      0.00    -0.69       0.00    -0.11
 27   7.2143      0.00    -0.51       0.00     0.01

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.

182223    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        59.299    59.299    59.298
ecceobj         0.392     0.392     0.392
incobj         19.826    19.826    19.826
qmin           34.688    34.624    34.745
qmax           84.100    83.923    83.849
amean          58.664    58.625    58.647
amin           57.891    57.804    57.897
amax           59.659    59.570    59.685
emean           0.388     0.389     0.388
emin            0.369     0.371     0.370
emax            0.410     0.409     0.407
imean          20.631    20.552    20.610
imin           19.735    19.700    19.860
imax           21.519    21.397    21.391
excite_mean     0.524     0.524     0.524
fracstop        1.000     1.000     1.000
cjmean          2.921     2.921     2.921

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       182.3     184.3     189.2
kozaiamp        180.0     180.0     180.0