Orbit Fit and Astrometric record for 500837

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: 500837    
# Created Sat Dec 16 02:36:54 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   32 observations of   32
# Arc:   4.22y
# First observation: 2013/03/07
#  Last observation: 2017/05/27
# Chi-squared of fit:    28.64 DOF:   58 RMS:  0.17
# Min/Max residuals:    -0.31    0.79
# Exact a, adot, b, bdot, g, gdot:
  1.436529E-05  2.232370E-02 -9.189824E-07 -8.753811E-04  2.332760E-02  2.713573E-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
   -0.455385 -142.448565    0.765756   -0.004982   -0.631885  2456359.034468
# Heliocentric elements and errors
Epoch:              2456358.5000  =  2013/03/07
Mean Anomaly:           71.76057 +/-     0.000
Argument of Peri:      107.41469 +/-     0.000
Long of Asc Node:       25.26658 +/-     0.000
Inclination:             2.29403 +/-     0.000
Eccentricity:         0.10737882 +/-    0.0000
Semi-Major Axis:     44.51625476 +/-    0.0000
Time of Perihelion: 2434733.3188 +/-       0.0
Perihelion:          39.73615190 +/-    0.0000
Aphelion:            49.29635762 +/-    0.0000
Period (y)              297.0203 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.95112838 +/-    0.0000
Ecliptic Y          -25.90187808 +/-    0.0000
Ecliptic Z           -0.34073603 +/-    0.0000
Ecliptic XDOT         0.00133875 +/-    0.0000
Ecliptic YDOT        -0.00227009 +/-    0.0000
Ecliptic ZDOT        -0.00010513 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.50400923 +/-    0.0000
Geocenter to KBO     42.86761441 +/-    0.0000
# Hcoef:  7.49

The following table shows the complete astrometric record for 500837. 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 (500837) followed by the observatory code and reference code for the source of the astrometry.

2013 03  07.53369  14 20 10.355  -14 27 39.18  24.0r 500837    568  C~1XRY      
2013 03  07.59012  14 20 10.185  -14 27 38.63        500837    568  C~1XRY      
2013 03  07.64267  14 20 10.049  -14 27 38.02  24.1r 500837    568  C~1XRY      
2013 04  04.53472  14 18 33.370  -14 19 59.18  23.7r 500837    568  C~1XRY      
2013 04  07.39521  14 18 21.315  -14 19 00.81  23.4r 500837    568  C~1XRY      
2013 04  07.43903  14 18 21.135  -14 18 59.94  23.9r 500837    568  C~1XRY      
2013 04  08.42769  14 18 16.886  -14 18 39.62  23.3r 500837    568  C~1XRY      
2013 04  08.47292  14 18 16.687  -14 18 38.12  23.3r 500837    568  C~1XRY      
2013 04  09.37434  14 18 12.824  -14 18 19.45  23.3r 500837    568  C~1XRY      
2013 04  09.41746  14 18 12.636  -14 18 18.47  23.7r 500837    568  C~1XRY      
2013 04  09.46062  14 18 12.451  -14 18 17.62  23.6r 500837    568  C~1XRY      
2013 05  11.46227  14 15 48.470  -14 06 26.72  23.8r 500837    568  C~1XRY      
2013 05  12.46349  14 15 44.111  -14 06 04.73  23.8r 500837    568  C~1XRY      
2013 06  12.35950  14 13 48.367  -13 56 19.53  24.1r 500837    568  C~1XRY      
2013 06  12.40439  14 13 48.228  -13 56 18.96  23.6r 500837    568  C~1XRY      
2013 07  04.31926  14 13 01.778  -13 52 19.34  23.6r 500837    568  C~1XRY      
2013 07  06.32704  14 12 59.400  -13 52 06.88  23.5r 500837    568  C~1XRY      
2014 02  03.59026  14 25 42.292  -14 57 32.58  24.0r 500837    568  C~1XRY      
2014 02  24.60898  14 25 28.526  -14 56 51.24  23.9r 500837    568  C~1XRY      
2014 02  25.59204  14 25 26.914  -14 56 44.44  24.0r 500837    568  C~1XRY      
2014 02  28.54001  14 25 21.610  -14 56 22.16  23.2r 500837    568  C~1XRY      
2014 04  04.43905  14 23 31.935  -14 47 58.59  23.8r 500837    568  C~1XRY      
2014 04  04.44293  14 23 31.922  -14 47 58.56  23.8r 500837    568  C~1XRZ      
2014 04  04.47867  14 23 31.772  -14 47 57.77  23.8r 500837    568  C~1XRZ      
2014 04  04.48274  14 23 31.751  -14 47 57.85  23.9r 500837    568  C~1XRZ      
2014 05  22.44989  14 19 59.811  -14 30 49.72  23.8r 500837    568  C~1XRZ      
2014 05  25.44210  14 19 47.729  -14 29 49.82  24.1r 500837    568  C~1XRZ      
2016 03  13.40559  14 34 40.87   -15 47 40.1   23.6R 500837    G37  C~1pQU      
2016 03  13.48448  14 34 40.65   -15 47 39.3         500837    G37  C~1pQU      
2017 01  31.64975  14 40 16.116  -16 15 47.68  24.3w 500837    568  C~2KOG      
2017 02  03.64617  14 40 18.448  -16 16 02.93        500837    568  C~2KOG      
2017 05  27.33451  14 34 30.524  -15 50 47.73  23.7r 500837    568  C~2KOG      

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    -0.17       0.00     0.79
  2   0.0002      0.00    -0.08       0.00    -0.12
  3   0.0003      0.00    -0.02       0.00    -0.14
  4   0.0767      0.00     0.06       0.00     0.02
  5   0.0845      0.00    -0.08       0.00    -0.05
  6   0.0846      0.00     0.07       0.00    -0.08
  7   0.0873      0.00    -0.20       0.00    -0.31
  8   0.0874      0.00    -0.21       0.00     0.25
  9   0.0899      0.00     0.01       0.00     0.01
 10   0.0900      0.00     0.03       0.00     0.09
 11   0.0901      0.00     0.11       0.00     0.04
 12   0.1778      0.00     0.09       0.00    -0.02
 13   0.1805      0.00     0.51       0.00     0.02
 14   0.2651      0.00     0.11       0.00     0.08
 15   0.2652      0.00     0.03       0.00    -0.02
 16   0.3252      0.00    -0.02       0.00     0.11
 17   0.3307      0.00     0.03       0.00     0.09
 18   0.9119      0.00    -0.00       0.00    -0.14
 19   0.9694      0.00     0.19       0.00    -0.12
 20   0.9721      0.00     0.08       0.00    -0.01
 21   0.9802      0.00     0.04       0.00    -0.21
 22   1.0757      0.00     0.01       0.00    -0.00
 23   1.0757      0.00     0.06       0.00    -0.05
 24   1.0758      0.00     0.05       0.00     0.05
 25   1.0758      0.00    -0.01       0.00    -0.11
 26   1.2072      0.00    -0.05       0.00     0.17
 27   1.2154      0.00     0.33       0.00     0.05
 28   3.0168      0.00    -0.20       0.00     0.03
 29   3.0170      0.00    -0.14       0.00    -0.11
 30   3.9045      0.00    -0.05       0.00     0.03
 31   3.9127      0.00     0.18       0.00    -0.19
 32   4.2212      0.00     0.09       0.00     0.20

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.

500837    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.334    44.334    44.334
ecceobj         0.104     0.104     0.104
incobj          2.300     2.300     2.300
qmin           38.761    38.762    38.805
qmax           50.856    50.851    50.837
amean          44.659    44.659    44.659
amin           44.295    44.290    44.286
amax           45.070    45.065    45.068
emean           0.112     0.112     0.112
emin            0.095     0.095     0.095
emax            0.129     0.129     0.129
imean           2.303     2.303     2.303
imin            1.440     1.440     1.440
imax            3.081     3.080     3.078
excite_mean     0.119     0.119     0.119
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

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       173.0     172.9     172.9
kozaiamp        179.9     179.9     180.0