Orbit Fit and Astrometric record for 495603

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: 495603    
# Created Sat Oct 21 01:36:54 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   58 observations of   58
# Arc:  17.14y
# First observation: 2000/04/06
#  Last observation: 2017/05/28
# Chi-squared of fit:   111.25 DOF:  110 RMS:  0.24
# Min/Max residuals:    -1.91    0.74
# Exact a, adot, b, bdot, g, gdot:
  1.520456E-05  2.063381E-02  3.958695E-09 -2.867520E-04  2.143034E-02 -4.673190E-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
   26.769370  113.855967   -1.000401    0.056012   -0.111507  2451640.666795
# Heliocentric elements and errors
Epoch:              2451640.5000  =  2000/04/06
Mean Anomaly:          319.91281 +/-     0.000
Argument of Peri:      156.48762 +/-     0.000
Long of Asc Node:       21.88064 +/-     0.000
Inclination:            26.73282 +/-     0.000
Eccentricity:         0.24966336 +/-    0.0000
Semi-Major Axis:     55.45246012 +/-    0.0000
Time of Perihelion: 2468435.6067 +/-       0.0
Perihelion:          41.60801237 +/-    0.0000
Aphelion:            69.29690787 +/-    0.0000
Period (y)              412.9424 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.80911981 +/-    0.0000
Ecliptic Y           37.81514144 +/-    0.0000
Ecliptic Z           21.01696572 +/-    0.0000
Ecliptic XDOT        -0.00220816 +/-    0.0000
Ecliptic YDOT        -0.00153187 +/-    0.0000
Ecliptic ZDOT        -0.00030149 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.78542427 +/-    0.0000
Geocenter to KBO     46.66302706 +/-    0.0000
# Hcoef:  5.24

The following table shows the complete astrometric record for 495603. 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 (495603) followed by the observatory code and reference code for the source of the astrometry.

2000 04  06.166052 08 09 24.90   +47 33 52.5   21.4V 495603    645  C~1w3y      
2000 04  06.166881 08 09 24.90   +47 33 52.5   21.1V 495603    645  C~1w3y      
2000 04  06.169369 08 09 24.90   +47 33 52.5   22.3V 495603    645  C~1w3y      
2010 03  13.31825  09 16 59.158  +43 19 25.31  21.7r 495603    F51  C~1w3y      
2010 03  13.32707  09 16 59.095  +43 19 24.92  21.6r 495603    F51  C~1w3y      
2010 03  20.34876  09 16 27.774  +43 18 01.46  22.9g 495603    F51  C~1w3y      
2011 03  13.31445  09 23 20.741  +42 43 44.26  20.8i 495603    F51  C~2FaT      
2011 03  13.32730  09 23 20.677  +42 43 44.34  21.3i 495603    F51  C~1w3y      
2011 03  13.34201  09 23 20.606  +42 43 44.19  21.5r 495603    F51  C~1w3y      
2011 03  13.35348  09 23 20.548  +42 43 44.23  21.7r 495603    F51  C~1w3y      
2012 02  11.39583  09 32 26.139  +42 03 42.96  21.0i 495603    F51  C~1w3y      
2012 02  11.40918  09 32 26.043  +42 03 43.15  21.0i 495603    F51  C~1w3y      
2012 02  15.41046  09 32 02.219  +42 04 43.33  22.3g 495603    F51  C~1w3y      
2012 02  15.42352  09 32 02.149  +42 04 43.47  21.9g 495603    F51  C~1w3y      
2012 02  15.44991  09 32 01.980  +42 04 44.10  21.8r 495603    F51  C~1w3y      
2012 04  13.29951  09 27 43.594  +41 56 59.50  22.4g 495603    F51  C~1w3y      
2012 04  13.31131  09 27 43.559  +41 56 59.16  22.0g 495603    F51  C~1w3y      
2013 01  08.55853  09 41 40.416  +41 08 59.03  21.1r 495603    F51  C~1w3y      
2013 01  08.56976  09 41 40.380  +41 08 59.56  21.4r 495603    F51  C~1w3y      
2013 02  11.52978  09 38 33.584  +41 24 17.22  21.7g 495603    F51  C~1w3y      
2013 02  15.36050  09 38 10.905  +41 25 18.17  21.1r 495603    F51  C~1w3y      
2013 02  15.37234  09 38 10.842  +41 25 18.33  21.2r 495603    F51  C~1w3y      
2015 01  11.56049  09 53 34.237  +39 45 25.85  20.9i 495603    F51  C~1vY1      
2015 01  11.57245  09 53 34.177  +39 45 26.43  20.6i 495603    F51  C~1vY1      
2015 01  11.58433  09 53 34.125  +39 45 26.95  20.7i 495603    F51  C~1vY1      
2015 01  11.59623  09 53 34.064  +39 45 27.28  20.8i 495603    F51  C~1vY1      
2015 01  12.54987  09 53 29.696  +39 46 00.54  20.9i 495603    F51  C~1vY1      
2015 01  12.56224  09 53 29.645  +39 46 00.99  20.9i 495603    F51  C~1vY1      
2015 01  12.57463  09 53 29.576  +39 46 01.38  21.0i 495603    F51  C~1vY1      
2015 01  12.58703  09 53 29.526  +39 46 01.86  20.7i 495603    F51  C~1vY2      
2015 01  13.56181  09 53 24.986  +39 46 35.73  20.8i 495603    F51  C~1vY2      
2015 01  13.57373  09 53 24.936  +39 46 36.22  21.0i 495603    F51  C~1vY2      
2015 01  13.58559  09 53 24.874  +39 46 36.47  20.8i 495603    F51  C~1vY2      
2015 01  13.59745  09 53 24.819  +39 46 37.03  20.8i 495603    F51  C~1vY2      
2015 01  14.52027  09 53 20.474  +39 47 08.67  20.9i 495603    F51  C~1vY2      
2015 01  14.53273  09 53 20.410  +39 47 09.19  20.8i 495603    F51  C~1vY2      
2015 01  14.54520  09 53 20.353  +39 47 09.56  20.8i 495603    F51  C~1vY2      
2015 01  14.55768  09 53 20.292  +39 47 10.00  20.8i 495603    F51  C~1vY2      
2015 01  27.41761  09 52 14.311  +39 53 58.61  20.8i 495603    F51  C~1vY2      
2015 01  27.43009  09 52 14.238  +39 53 59.01  20.8i 495603    F51  C~1vY2      
2015 01  27.44257  09 52 14.172  +39 53 59.39  20.9i 495603    F51  C~1vY2      
2015 01  27.45506  09 52 14.100  +39 53 59.71  20.9i 495603    F51  C~1vY2      
2015 03  20.30271  09 47 28.249  +40 04 26.99  21.3w 495603    F51  C~1vY2      
2015 03  20.31486  09 47 28.194  +40 04 26.98  21.2w 495603    F51  C~1vY2      
2015 03  20.32703  09 47 28.132  +40 04 26.97  21.1w 495603    F51  C~1vY2      
2015 03  20.33931  09 47 28.075  +40 04 26.79  21.2w 495603    F51  C~1vY2      
2015 03  22.30930  09 47 19.110  +40 04 11.24  21.1w 495603    F51  C~1vY2      
2015 03  22.32150  09 47 19.053  +40 04 11.01  21.2w 495603    F51  C~1vY2      
2015 03  22.33370  09 47 19.002  +40 04 10.96  21.2w 495603    F51  C~1vY2      
2015 03  22.34594  09 47 18.939  +40 04 10.79  21.2w 495603    F51  C~1vY2      
2015 05  03.25894  09 45 30.116  +39 47 48.72  21.2i 495603    F51  C~1vY2      
2015 05  03.26983  09 45 30.105  +39 47 48.44  21.0i 495603    F51  C~1vY2      
2015 05  03.28069  09 45 30.080  +39 47 47.87  21.0i 495603    F51  C~1vY2      
2015 05  03.29156  09 45 30.103  +39 47 47.71  21.1i 495603    F51  C~1vY2      
2017 05  27.90206  09 57 26.18   +38 04 51.9         495603    104  C~2GJK      
2017 05  27.91044  09 57 26.20   +38 04 52.0   21.0  495603    104  C~2GJK      
2017 05  28.90094  09 57 28.10   +38 04 06.6   21.2  495603    104  C~2GJK      
2017 05  28.91877  09 57 28.18   +38 04 05.4         495603    104  C~2GJK      

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     0.08       0.00    -1.91
  2   0.0000      0.00     0.01       0.00     0.01
  3   0.0000      0.00     0.04       0.00     0.09
  4   9.9333      0.00     0.28       0.00     0.19
  5   9.9334      0.00    -0.03       0.00    -0.12
  6   9.9526      0.00     0.54       0.00     0.05
  7  10.9326      0.00    -0.24       0.00     0.03
  8  10.9327      0.00    -0.25       0.00     0.20
  9  10.9327      0.00    -0.23       0.00     0.17
 10  10.9328      0.00    -0.25       0.00     0.29
 11  11.8500      0.00     0.10       0.00    -0.06
 12  11.8501      0.00    -0.12       0.00    -0.09
 13  11.8610      0.00     0.24       0.00    -0.06
 14  11.8611      0.00     0.37       0.00    -0.09
 15  11.8611      0.00     0.23       0.00     0.18
 16  12.0195      0.00     0.14       0.00    -0.30
 17  12.0196      0.00    -0.00       0.00    -0.30
 18  12.7595      0.00    -0.19       0.00    -0.02
 19  12.7595      0.00     0.08       0.00     0.12
 20  12.8525      0.00     0.41       0.00    -0.06
 21  12.8630      0.00    -0.04       0.00     0.07
 22  12.8630      0.00     0.08       0.00     0.06
 23  14.7663      0.00     0.11       0.00    -0.12
 24  14.7663      0.00     0.04       0.00     0.04
 25  14.7664      0.00     0.09       0.00     0.15
 26  14.7664      0.00     0.00       0.00     0.06
 27  14.7690      0.00    -0.00       0.00    -0.08
 28  14.7691      0.00     0.11       0.00    -0.06
 29  14.7691      0.00    -0.05       0.00    -0.10
 30  14.7691      0.00     0.08       0.00    -0.05
 31  14.7718      0.00     0.01       0.00    -0.03
 32  14.7718      0.00     0.11       0.00     0.05
 33  14.7719      0.00     0.04       0.00    -0.10
 34  14.7719      0.00     0.06       0.00     0.05
 35  14.7744      0.00     0.14       0.00    -0.08
 36  14.7744      0.00     0.09       0.00     0.01
 37  14.7745      0.00     0.15       0.00    -0.05
 38  14.7745      0.00     0.14       0.00    -0.03
 39  14.8097      0.00     0.08       0.00    -0.13
 40  14.8098      0.00     0.02       0.00    -0.09
 41  14.8098      0.00     0.07       0.00    -0.08
 42  14.8098      0.00     0.03       0.00    -0.12
 43  14.9518      0.00    -0.01       0.00    -0.15
 44  14.9518      0.00     0.03       0.00    -0.07
 45  14.9518      0.00    -0.04       0.00     0.00
 46  14.9519      0.00    -0.02       0.00    -0.09
 47  14.9573      0.00    -0.11       0.00    -0.02
 48  14.9573      0.00    -0.13       0.00    -0.15
 49  14.9573      0.00    -0.05       0.00    -0.09
 50  14.9574      0.00    -0.16       0.00    -0.15
 51  15.0721      0.00     0.15       0.00     0.04
 52  15.0722      0.00     0.08       0.00     0.16
 53  15.0722      0.00    -0.21       0.00    -0.01
 54  15.0722      0.00     0.23       0.00     0.22
 55  17.1410      0.00     0.11       0.00     0.26
 56  17.1410      0.00     0.17       0.00     0.74
 57  17.1437      0.00    -0.43       0.00     0.03
 58  17.1437      0.00     0.23       0.00    -0.35

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.

495603    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE
Type:         5:2EII    5:2EII    5:2EII

axisobj        55.392    55.391    55.392
ecceobj         0.249     0.249     0.249
incobj         26.733    26.733    26.733
qmin           36.784    36.891    36.737
qmax           75.158    74.997    75.183
amean          55.461    55.462    55.462
amin           54.822    54.797    54.815
amax           56.234    56.247    56.294
emean           0.299     0.298     0.299
emin            0.245     0.245     0.245
emax            0.337     0.334     0.338
imean          24.906    24.937    24.877
imin           23.521    23.594    23.449
imax           26.752    26.752    26.752
excite_mean     0.517     0.517     0.517
fracstop        1.000     1.000     1.000
cjmean          2.891     2.891     2.891

libcent 0       183.9     183.9     183.9
libamp  0       110.0     110.1     109.9
libcent 1       154.2     155.2     153.8
libamp  1       116.1     117.1     115.6
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       170.1     170.4     169.9
kozaiamp         10.2      10.4      10.0