Orbit Fit and Astrometric record for 427614

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: 427614    
# Created Sun Oct 22 01:36:46 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   25 observations of   25
# Arc:  11.07y
# First observation: 2003/09/28
#  Last observation: 2014/10/22
# Chi-squared of fit:    33.76 DOF:   44 RMS:  0.21
# Min/Max residuals:    -1.03    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.533629E-05  2.313670E-02  2.474885E-06  3.664154E-03  2.451258E-02 -6.723317E-04
# 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
  -22.818685   32.589442    0.475152   -0.343357   -0.816238  2452910.666663
# Heliocentric elements and errors
Epoch:              2452910.5000  =  2003/09/28
Mean Anomaly:          229.39138 +/-     0.000
Argument of Peri:       65.48761 +/-     0.000
Long of Asc Node:       99.96363 +/-     0.000
Inclination:            23.89762 +/-     0.000
Eccentricity:         0.05626553 +/-    0.0000
Semi-Major Axis:     40.07807382 +/-    0.0000
Time of Perihelion: 2486532.8477 +/-       0.0
Perihelion:          37.82305958 +/-    0.0000
Aphelion:            42.33308807 +/-    0.0000
Period (y)              253.7280 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.68084867 +/-    0.0000
Ecliptic Y           20.33392435 +/-    0.0000
Ecliptic Z          -15.82103325 +/-    0.0000
Ecliptic XDOT        -0.00132142 +/-    0.0000
Ecliptic YDOT         0.00221959 +/-    0.0000
Ecliptic ZDOT         0.00040651 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.61506397 +/-    0.0000
Geocenter to KBO     40.79541700 +/-    0.0000
# Hcoef:  6.94

The following table shows the complete astrometric record for 427614. 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 (427614) followed by the observatory code and reference code for the source of the astrometry.

2003 09  28.16592  02 32 32.97   -09 06 36.6   22.8R 427614    807  Cv6149      
2003 10  19.15709  02 31 03.23   -09 17 25.2   22.4I 427614    807  Cv6149      
2003 10  22.13678  02 30 49.24   -09 18 42.4   22.9R 427614    807  Cv6149      
2003 10  22.16145  02 30 49.11   -09 18 42.9   22.4I 427614    807  Cv6149      
2004 11  12.16055  02 33 50.46   -08 46 44.8   22.5I 427614    807  Cv6149      
2004 11  16.14121  02 33 31.58   -08 47 27.9   22.9R 427614    807  Cv6149      
2004 11  16.15918  02 33 31.50   -08 47 28.2   22.3I 427614    807  Cv6149      
2004 11  20.17244  02 33 12.83   -08 47 59.9   23.1R 427614    807  Cv6149      
2004 11  20.18436  02 33 12.79   -08 48 00.1   22.8I 427614    807  Cv6149      
2004 12  07.17099  02 32 00.69   -08 48 02.8   23.1R 427614    807  Cv6149      
2004 12  07.19236  02 32 00.61   -08 48 02.7   22.4I 427614    807  Cv6149      
2004 12  15.14680  02 31 32.16   -08 46 48.9   23.0R 427614    807  Cv6149      
2004 12  15.16933  02 31 32.08   -08 46 48.6   22.4I 427614    807  Cv6149      
2005 01  07.09187  02 30 36.66   -08 38 58.5   23.1R 427614    807  Cv6149      
2005 01  07.10388  02 30 36.64   -08 38 58.4   22.5I 427614    807  Cv6149      
2005 01  11.07715  02 30 31.63   -08 37 01.1   22.9R 427614    807  Cv6149      
2005 01  15.10422  02 30 28.06   -08 34 52.7   22.9R 427614    807  Cv6149      
2007 11  08.29998  02 48 28.10   -06 47 31.3         427614    695  Cy4000      
2007 11  08.35591  02 48 27.82   -06 47 32.3         427614    695  Cy4000      
2007 11  09.36889  02 48 22.88   -06 47 48.6         427614    695  Cy4000      
2014 09  26.36000  03 24 45.60   -01 45 11.5   23.4R 427614    695  C~1LJF      
2014 09  26.40537  03 24 45.47   -01 45 12.8         427614    695  C~1LJF      
2014 09  26.45016  03 24 45.34   -01 45 14.1         427614    695  C~1LJF      
2014 10  22.35128  03 23 08.41   -01 57 16.5   23.1R 427614    G37  C~1BxE      
2014 10  22.44431  03 23 08.00   -01 57 18.7         427614    G37  C~1BxE      

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    -0.19       0.00    -1.03
  2   0.0575      0.00    -0.03       0.00    -0.11
  3   0.0656      0.00     0.10       0.00    -0.11
  4   0.0657      0.00    -0.07       0.00     0.01
  5   1.1252      0.00     0.04       0.00     0.18
  6   1.1361      0.00     0.12       0.00     0.09
  7   1.1362      0.00     0.21       0.00    -0.04
  8   1.1472      0.00    -0.07       0.00     0.12
  9   1.1472      0.00     0.16       0.00    -0.00
 10   1.1937      0.00     0.18       0.00     0.08
 11   1.1938      0.00     0.23       0.00     0.04
 12   1.2156      0.00     0.14       0.00     0.05
 13   1.2156      0.00     0.08       0.00     0.07
 14   1.2784      0.00    -0.06       0.00     0.19
 15   1.2784      0.00    -0.09       0.00    -0.05
 16   1.2893      0.00    -0.16       0.00     0.12
 17   1.3003      0.00    -0.16       0.00     0.20
 18   4.1126      0.00     0.14       0.00    -0.27
 19   4.1128      0.00     0.10       0.00    -0.36
 20   4.1155      0.00     0.24       0.00    -0.32
 21  10.9957      0.00    -0.10       0.00     0.08
 22  10.9959      0.00    -0.04       0.00     0.13
 23  10.9960      0.00    -0.00       0.00     0.16
 24  11.0669      0.00     0.03       0.00    -0.06
 25  11.0672      0.00     0.20       0.00     0.05

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.

427614    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.420    40.420    40.420
ecceobj         0.049     0.049     0.049
incobj         23.901    23.901    23.901
qmin           37.378    37.385    37.358
qmax           43.174    43.171    43.194
amean          40.162    40.162    40.163
amin           39.851    39.851    39.850
amax           40.472    40.476    40.491
emean           0.053     0.053     0.053
emin            0.041     0.041     0.041
emax            0.067     0.067     0.067
imean          22.204    22.204    22.204
imin           21.648    21.648    21.648
imax           22.813    22.813    22.806
excite_mean     0.382     0.382     0.382
fracstop        1.000     1.000     1.000
cjmean          2.886     2.886     2.886

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       177.9     177.9     178.0
kozaiamp        180.0     180.0     180.0