Orbit Fit and Astrometric record for 183964

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: 183964    
# Created Mon Oct 23 01:36:39 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   27 observations of   27
# Arc:   4.69y
# First observation: 2004/02/26
#  Last observation: 2008/11/05
# Chi-squared of fit:    52.74 DOF:   48 RMS:  0.25
# Min/Max residuals:    -0.48    0.97
# Exact a, adot, b, bdot, g, gdot:
  1.969958E-05  3.759029E-02  4.095189E-06  6.589082E-03  3.046310E-02 -5.308975E-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
    5.764328  130.315784   -0.441311    0.088587   -0.876910  2453061.691253
# Heliocentric elements and errors
Epoch:              2453062.5000  =  2004/02/27
Mean Anomaly:          349.25830 +/-     0.000
Argument of Peri:       56.02770 +/-     0.000
Long of Asc Node:      101.59423 +/-     0.000
Inclination:            11.29413 +/-     0.000
Eccentricity:         0.38990130 +/-    0.0000
Semi-Major Axis:     53.67794548 +/-    0.0000
Time of Perihelion: 2457348.6027 +/-       0.0
Perihelion:          32.74884462 +/-    0.0000
Aphelion:            74.60704634 +/-    0.0000
Period (y)              393.2802 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.04228229 +/-    0.0000
Ecliptic Y           25.29194631 +/-    0.0000
Ecliptic Z            3.29713806 +/-    0.0000
Ecliptic XDOT        -0.00223404 +/-    0.0000
Ecliptic YDOT        -0.00259983 +/-    0.0000
Ecliptic ZDOT         0.00054142 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.71085045 +/-    0.0000
Geocenter to KBO     32.82673366 +/-    0.0000
# Hcoef:  7.62

The following table shows the complete astrometric record for 183964. 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 (183964) followed by the observatory code and reference code for the source of the astrometry.

2004 02  26.19051  08 57 49.31   +23 11 54.3   22.5R 183964    695  Ck5116      
2004 02  26.32057  08 57 48.59   +23 11 57.2         183964    695  Ck5116      
2004 02  27.29266  08 57 43.40   +23 12 17.0         183964    695  Ck5116      
2004 03  15.15737  08 56 23.85   +23 16 50.3   22.0R 183964    695  Ck5116      
2004 03  15.26167  08 56 23.41   +23 16 51.2         183964    695  Ck5116      
2004 12  11.477426 09 13 51.92   +22 19 43.2   22.4V 183964    645  C~2KGJ      
2004 12  11.478255 09 13 51.91   +22 19 43.3   21.8V 183964    645  C~2KGJ      
2004 12  11.480743 09 13 51.91   +22 19 43.5   22.6V 183964    645  C~2KGJ      
2004 12  15.358090 09 13 40.74   +22 21 23.2   23.3V 183964    645  C~2KGJ      
2004 12  15.358919 09 13 40.73   +22 21 22.9   22.5V 183964    645  C~2KGJ      
2004 12  15.361407 09 13 40.76   +22 21 23.1   23.9V 183964    645  C~2KGJ      
2005 04  10.13746  09 04 35.83   +23 04 23.4   22.7R 183964    695  Cn3122      
2005 04  11.13882  09 04 34.37   +23 04 22.2         183964    695  Cn3122      
2005 04  12.13805  09 04 33.04   +23 04 20.4         183964    695  Cn3122      
2005 04  13.13848  09 04 31.83   +23 04 18.2         183964    695  Cn3122      
2005 12  01.39172  09 23 35.16   +21 56 33.1   22.7R 183964    695  Cs2464      
2005 12  01.44608  09 23 35.10   +21 56 34.4         183964    695  Cs2464      
2005 12  30.37133  09 22 13.74   +22 09 19.1   22.2R 183964    688  Cp9892      
2005 12  30.44705  09 22 13.42   +22 09 21.9         183964    688  Cp9892      
2007 02  21.35640  09 26 54.08   +22 16 20.1   22.2R 183964    695  Cu3019      
2007 02  21.46880  09 26 53.41   +22 16 23.3         183964    695  Cu3019      
2007 11  08.51986  09 41 59.27   +21 06 49.8         183964    695  Cy4009      
2007 11  09.49682  09 42 01.54   +21 06 55.5         183964    695  Cy4009      
2008 11  05.75444  09 51 08.84   +20 41 37.9   25.6R 183964    250  S~06I3      
2008 11  05.76069  09 51 08.83   +20 41 37.7         183964    250  S~06I3      
2008 11  05.76763  09 51 08.88   +20 41 37.9         183964    250  S~06I3      
2008 11  05.77388  09 51 08.91   +20 41 37.9         183964    250  S~06I3      

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     0.12
  2   0.0004      0.00    -0.13       0.00     0.09
  3   0.0030      0.00    -0.02       0.00     0.15
  4   0.0492      0.00     0.22       0.00     0.01
  5   0.0495      0.00     0.08       0.00    -0.35
  6   0.7920      0.00     0.04       0.00    -0.28
  7   0.7920      0.00    -0.07       0.00    -0.20
  8   0.7920      0.00     0.03       0.00    -0.07
  9   0.8026      0.00    -0.19       0.00    -0.16
 10   0.8027      0.00    -0.30       0.00    -0.48
 11   0.8027      0.00     0.26       0.00    -0.34
 12   1.1196      0.00     0.04       0.00     0.17
 13   1.1224      0.00     0.01       0.00     0.07
 14   1.1251      0.00     0.08       0.00    -0.06
 15   1.1279      0.00     0.18       0.00    -0.04
 16   1.7637      0.00    -0.13       0.00     0.10
 17   1.7639      0.00    -0.01       0.00     0.27
 18   1.8431      0.00     0.25       0.00     0.52
 19   1.8433      0.00     0.44       0.00     0.97
 20   2.9874      0.00     0.08       0.00     0.16
 21   2.9878      0.00    -0.00       0.00     0.35
 22   3.6997      0.00    -0.09       0.00    -0.34
 23   3.7024      0.00    -0.00       0.00    -0.35
 24   4.6942      0.00     0.01       0.00     0.01
 25   4.6942      0.00    -0.41       0.00    -0.20
 26   4.6943      0.00     0.03       0.00    -0.03
 27   4.6943      0.00     0.21       0.00    -0.04

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.

183964    quality flag:3

Type:        7:3EEEE   7:3EEEE   7:3EEEE

axisobj        53.081    53.081    53.082
ecceobj         0.382     0.382     0.382
incobj         11.297    11.297    11.297
qmin           32.036    32.028    32.029
qmax           75.016    75.116    75.076
amean          52.969    52.969    52.969
amin           52.332    52.323    52.327
amax           53.830    53.823    53.803
emean           0.382     0.382     0.381
emin            0.369     0.369     0.370
emax            0.395     0.396     0.396
imean           9.689     9.696     9.716
imin            8.942     8.940     8.935
imax           10.230    10.232    10.320
excite_mean     0.417     0.417     0.417
fracstop        1.000     1.000     1.000
cjmean          2.985     2.985     2.985

libcent 0       179.4     178.6     178.2
libamp  0        81.8      80.4      80.5
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       183.5     182.5     179.5
kozaiamp        123.3     121.5     115.7