Orbit Fit and Astrometric record for 523642

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: 523642    
# Created Fri Feb 22 02:07:12 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   62 observations of   62
# Arc:   9.03y
# First observation: 2009/01/21
#  Last observation: 2018/01/31
# Chi-squared of fit:    41.23 DOF:  118 RMS:  0.14
# Min/Max residuals:    -0.52    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.281264E-05  2.094688E-02  8.434715E-06  1.208360E-02  2.414889E-02 -5.385755E-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
   18.666986    9.797583   -0.921742   -0.114784    0.339854  2454852.635313
# Heliocentric elements and errors
Epoch:              2454852.5000  =  2009/01/21
Mean Anomaly:          307.19087 +/-     0.000
Argument of Peri:      110.51618 +/-     0.000
Long of Asc Node:      341.33712 +/-     0.000
Inclination:            34.43481 +/-     0.000
Eccentricity:         0.21622712 +/-    0.0000
Semi-Major Axis:     45.39406185 +/-    0.0000
Time of Perihelion: 2471239.6535 +/-       0.0
Perihelion:          35.57863482 +/-    0.0000
Aphelion:            55.20948889 +/-    0.0000
Period (y)              305.8488 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.15091464 +/-    0.0000
Ecliptic Y            7.51923355 +/-    0.0000
Ecliptic Z           13.25423549 +/-    0.0000
Ecliptic XDOT        -0.00140080 +/-    0.0000
Ecliptic YDOT         0.00217022 +/-    0.0000
Ecliptic ZDOT         0.00110236 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.08182875 +/-    0.0000
Geocenter to KBO     41.40995211 +/-    0.0000
# Hcoef:  5.91

The following table shows the complete astrometric record for 523642. 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 (523642) followed by the observatory code and reference code for the source of the astrometry.

2009 01  21.134547 00 05 03.34   +20 57 51.0   21.8V 523642    645  C~2PON      
2009 01  21.135376 00 05 03.35   +20 57 50.9   21.7V 523642    645  C~2PON      
2009 01  21.137864 00 05 03.34   +20 57 51.1   22.6V 523642    645  C~2PON      
2010 09  17.51291  00 16 44.583  +24 09 20.42  21.7r 523642    F51  C~1w3k      
2010 09  17.51432  00 16 44.574  +24 09 20.39  21.5r 523642    F51  C~1w3k      
2010 09  17.52501  00 16 44.524  +24 09 20.32  21.8r 523642    F51  C~1w3k      
2010 09  17.52641  00 16 44.510  +24 09 20.20  21.6r 523642    F51  C~1w3k      
2010 10  08.31269  00 14 54.333  +24 01 52.71  21.0G 523642    F51  C~2kMk      
2010 10  15.25684  00 14 18.573  +23 58 32.21  21.3r 523642    F51  C~1w3k      
2010 10  15.26880  00 14 18.548  +23 58 32.01  21.9r 523642    F51  C~1w3k      
2010 11  01.19769  00 12 59.172  +23 49 12.69  22.3G 523642    F51  C~2kMk      
2010 11  03.36277  00 12 50.091  +23 47 56.24  22.0i 523642    F51  C~1w3k      
2010 11  03.37477  00 12 50.034  +23 47 56.12  21.9i 523642    F51  C~1w3k      
2011 09  21.51179  00 20 16.623  +25 19 11.74  21.4r 523642    F51  C~1w3k      
2011 09  21.52447  00 20 16.565  +25 19 11.75  21.4i 523642    F51  C~1w3k      
2011 09  21.53574  00 20 16.495  +25 19 11.48  21.6i 523642    F51  C~1w3k      
2011 09  25.34406  00 19 56.023  +25 18 03.41  22.0g 523642    F51  C~1w3k      
2011 10  19.26441  00 17 49.330  +25 07 42.20  21.9w 523642    F51  C~1w3k      
2011 10  19.27827  00 17 49.259  +25 07 41.71  21.8w 523642    F51  C~1w3k      
2011 10  19.29215  00 17 49.189  +25 07 41.38  21.9w 523642    F51  C~1w3k      
2011 10  19.30612  00 17 49.106  +25 07 40.77  22.0w 523642    F51  C~1w3k      
2012 10  05.51218  00 22 54.379  +26 25 21.76  21.1i 523642    F51  C~1w3k      
2013 08  28.55981  00 30 19.352  +27 43 54.37  21.3i 523642    F51  C~1w3k      
2013 08  28.57196  00 30 19.290  +27 43 54.48  21.3i 523642    F51  C~1w3k      
2013 09  04.55356  00 29 46.321  +27 44 04.66  22.0g 523642    F51  C~1w3k      
2013 09  08.55065  00 29 26.342  +27 43 52.20  22.2g 523642    F51  C~1w3k      
2013 09  08.58946  00 29 26.160  +27 43 51.76  21.6r 523642    F51  C~1w3k      
2013 10  25.27873  00 25 14.768  +27 27 22.56  21.7G 523642    F51  C~2kMk      
2013 11  19.37447  00 23 29.403  +27 11 51.70  20.1G 523642    F51  C~2kMk      
2014 10  28.30033  00 29 10.075  +28 37 47.70  20.9G 523642    F51  C~2kMk      
2014 12  11.33558  00 26 43.694  +28 09 57.39  21.8G 523642    F51  C~2kMk      
2015 10  23.26124  00 33 54.522  +29 53 00.06  22.3G 523642    F51  C~2kMk      
2015 10  23.27350  00 33 54.435  +29 52 59.89  21.9G 523642    F51  C~2kMk      
2015 10  23.28592  00 33 54.352  +29 52 59.56  21.9G 523642    F51  C~2kMk      
2015 10  23.29819  00 33 54.300  +29 52 58.91  22.0G 523642    F51  C~2kMk      
2016 01  19.20082  00 31 21.860  +29 04 02.79  21.3G 523642    F51  C~2kMk      
2016 07  22.54630  00 45 12.395  +31 01 57.75  21.7G 523642    F51  C~2kMk      
2016 07  22.55844  00 45 12.374  +31 01 58.19  21.5G 523642    F51  C~2kMk      
2016 07  22.57056  00 45 12.358  +31 01 58.63  22.0G 523642    F51  C~2kMk      
2016 07  22.58275  00 45 12.340  +31 01 59.15  21.9G 523642    F51  C~2kMk      
2016 10  10.32180  00 39 29.560  +31 11 14.84  21.5G 523642    F51  C~2kMk      
2016 10  10.33338  00 39 29.490  +31 11 14.47  22.1G 523642    F51  C~2kMk      
2016 10  10.34471  00 39 29.427  +31 11 14.37  22.3G 523642    F51  C~2kMk      
2016 10  10.35609  00 39 29.364  +31 11 13.88  21.5G 523642    F51  C~2kMk      
2016 11  05.25745  00 37 09.810  +30 57 09.03  21.3G 523642    F51  C~2kMk      
2017 08  06.62640  00 49 21.362  +32 20 45.49  21.9G 523642    F51  C~2kMk      
2017 10  27.30622  00 42 30.961  +32 15 11.31  21.6G 523642    F51  C~2kMk      
2017 10  27.31725  00 42 30.916  +32 15 11.12  22.0G 523642    F51  C~2kMk      
2017 11  09.38381  00 41 24.730  +32 07 03.24  22.1G 523642    F51  C~2kMk      
2017 11  09.39571  00 41 24.674  +32 07 02.95  22.0G 523642    F51  C~2kMk      
2017 11  09.40755  00 41 24.610  +32 07 02.49  22.1G 523642    F51  C~2kMk      
2017 11  09.41945  00 41 24.553  +32 07 02.02  21.9G 523642    F51  C~2kMk      
2017 11  21.21249  00 40 35.048  +31 58 59.32  21.5G 523642    F51  C~2kMk      
2017 11  21.22471  00 40 35.003  +31 58 58.77  21.4G 523642    F51  C~2kMk      
2017 11  21.23685  00 40 34.961  +31 58 58.44  21.8G 523642    F51  C~2kMk      
2017 11  21.24909  00 40 34.909  +31 58 57.80  21.5G 523642    F51  C~2kMk      
2017 12  12.28943  00 39 38.708  +31 44 29.87  21.3G 523642    F51  C~2kMk      
2017 12  12.30015  00 39 38.697  +31 44 29.42  21.6G 523642    F51  C~2kMk      
2017 12  12.31094  00 39 38.686  +31 44 28.80  21.4G 523642    F51  C~2kMk      
2017 12  12.32172  00 39 38.661  +31 44 28.50  21.7G 523642    F51  C~2kMk      
2017 12  26.20761  00 39 27.873  +31 35 55.59  22.2G 523642    F51  C~2kMk      
2018 01  31.27462  00 40 41.761  +31 22 30.80  22.7G 523642    F51  C~2kMk      

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     0.23       0.00    -0.02
  2   0.0000      0.00     0.34       0.00    -0.12
  3   0.0000      0.00     0.06       0.00     0.08
  4   1.6547      0.00    -0.04       0.00     0.16
  5   1.6547      0.00    -0.07       0.00     0.15
  6   1.6547      0.00     0.04       0.00     0.24
  7   1.6547      0.00    -0.06       0.00     0.15
  8   1.7116      0.00    -0.06       0.00    -0.22
  9   1.7307      0.00    -0.16       0.00    -0.12
 10   1.7307      0.00     0.38       0.00     0.04
 11   1.7770      0.00    -0.15       0.00    -0.16
 12   1.7830      0.00    -0.42       0.00    -0.41
 13   1.7830      0.00    -0.52       0.00    -0.10
 14   2.6650      0.00    -0.02       0.00    -0.13
 15   2.6650      0.00     0.15       0.00     0.09
 16   2.6650      0.00     0.02       0.00     0.01
 17   2.6755      0.00    -0.19       0.00    -0.00
 18   2.7409      0.00     0.04       0.00     0.15
 19   2.7410      0.00     0.03       0.00     0.09
 20   2.7410      0.00     0.04       0.00     0.20
 21   2.7411      0.00    -0.13       0.00     0.03
 22   3.7053      0.00    -0.29       0.00     0.04
 23   4.6008      0.00     0.07       0.00     0.01
 24   4.6008      0.00    -0.02       0.00     0.06
 25   4.6199      0.00    -0.09       0.00     0.14
 26   4.6308      0.00     0.03       0.00    -0.02
 27   4.6310      0.00     0.32       0.00    -0.26
 28   4.7588      0.00    -0.06       0.00    -0.07
 29   4.8275      0.00     0.11       0.00    -0.06
 30   5.7664      0.00     0.22       0.00     0.04
 31   5.8869      0.00     0.08       0.00     0.12
 32   6.7519      0.00     0.36       0.00    -0.19
 33   6.7519      0.00     0.06       0.00     0.04
 34   6.7520      0.00    -0.18       0.00     0.11
 35   6.7520      0.00     0.04       0.00    -0.14
 36   6.9927      0.00     0.34       0.00    -0.03
 37   7.5001      0.00     0.09       0.00     0.02
 38   7.5001      0.00     0.01       0.00    -0.01
 39   7.5002      0.00     0.00       0.00    -0.05
 40   7.5002      0.00    -0.03       0.00    -0.01
 41   7.7185      0.00    -0.09       0.00     0.01
 42   7.7185      0.00    -0.12       0.00    -0.07
 43   7.7186      0.00    -0.06       0.00     0.12
 44   7.7186      0.00    -0.00       0.00    -0.09
 45   7.7895      0.00    -0.15       0.00    -0.06
 46   8.5407      0.00     0.05       0.00     0.08
 47   8.7643      0.00    -0.20       0.00    -0.15
 48   8.7644      0.00     0.04       0.00     0.04
 49   8.8001      0.00     0.05       0.00    -0.06
 50   8.8002      0.00     0.06       0.00     0.12
 51   8.8002      0.00    -0.06       0.00     0.14
 52   8.8002      0.00    -0.06       0.00     0.14
 53   8.8325      0.00    -0.07       0.00     0.01
 54   8.8326      0.00    -0.05       0.00    -0.03
 55   8.8326      0.00     0.01       0.00     0.14
 56   8.8326      0.00    -0.07       0.00     0.01
 57   8.8902      0.00    -0.06       0.00     0.00
 58   8.8903      0.00     0.04       0.00    -0.02
 59   8.8903      0.00     0.15       0.00    -0.21
 60   8.8903      0.00     0.04       0.00    -0.08
 61   8.9283      0.00     0.06       0.00    -0.01
 62   9.0271      0.00     0.08       0.00     0.16

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.

523642    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        45.716    45.716    45.716
ecceobj         0.221     0.221     0.221
incobj         34.418    34.418    34.418
qmin           34.800    34.803    34.795
qmax           56.426    56.386    56.440
amean          45.382    45.381    45.382
amin           44.998    44.987    44.994
amax           45.830    45.826    45.835
emean           0.212     0.212     0.212
emin            0.193     0.193     0.193
emax            0.231     0.231     0.231
imean          35.432    35.432    35.432
imin           35.120    35.126    35.127
imax           35.826    35.830    35.812
excite_mean     0.617     0.617     0.617
fracstop        1.000     1.000     1.000
cjmean          2.619     2.619     2.619

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       200.3     200.4     200.3
kozaiamp        180.0     180.0     180.0