Orbit Fit and Astrometric record for 13OR11

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: 13OR11    
# Created Sat Oct 20 01:09:17 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   37 observations of   37
# Arc:   8.02y
# First observation: 2008/10/31
#  Last observation: 2016/11/06
# Chi-squared of fit:    29.44 DOF:   68 RMS:  0.16
# Min/Max residuals:    -0.38    0.45
# Exact a, adot, b, bdot, g, gdot:
  2.146835E-05  4.748953E-02  8.171720E-06  1.550709E-02  3.430369E-02  3.268650E-03
# Covariance matrix:
  4.4430E-13 -1.4634E-13  4.3801E-14 -3.0945E-14 -6.7489E-14 -2.4372E-13
 -1.4634E-13  7.9840E-14 -3.2276E-14  2.3182E-14  2.0797E-14  1.8196E-13
  4.3801E-14 -3.2276E-14  3.0990E-13 -5.9936E-14 -7.6264E-15 -8.3869E-14
 -3.0945E-14  2.3182E-14 -5.9936E-14  1.7221E-14  4.1672E-15  6.0490E-14
 -6.7489E-14  2.0797E-14 -7.6264E-15  4.1672E-15  1.0490E-13  3.4813E-14
 -2.4372E-13  1.8196E-13 -8.3869E-14  6.0490E-14  3.4813E-14  4.7439E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.413205   22.415499   -0.273976   -0.189092   -0.936862  2454770.819101
# Heliocentric elements and errors
Epoch:              2454770.5000  =  2008/10/31
Mean Anomaly:            2.06656 +/-     0.001
Argument of Peri:      316.44848 +/-     0.002
Long of Asc Node:       53.20097 +/-     0.000
Inclination:            21.18544 +/-     0.000
Eccentricity:         0.62702013 +/-    0.0000
Semi-Major Axis:     80.04857355 +/-    0.0105
Time of Perihelion: 2453268.8297 +/-       0.5
Perihelion:          29.85650621 +/-    0.0054
Aphelion:           130.24064088 +/-    0.0174
Period (y)              716.2071 +/-      0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           27.19653111 +/-    0.0002
Ecliptic Y           11.50984403 +/-    0.0001
Ecliptic Z           -5.76833761 +/-    0.0001
Ecliptic XDOT        -0.00097656 +/-    0.0000
Ecliptic YDOT         0.00369720 +/-    0.0000
Ecliptic ZDOT         0.00116144 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.08983910 +/-    0.0002
Geocenter to KBO     29.15137349 +/-    0.0003
# Hcoef:  7.36

The following table shows the complete astrometric record for 13OR11. 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 (13OR11) followed by the observatory code and reference code for the source of the astrometry.

2008 10  31.318347 01 39 48.77   -01 53 01.8   21.9V 13OR11    645  C~1vX1      
2008 10  31.319177 01 39 48.76   -01 53 01.8   21.6V 13OR11    645  C~1vX1      
2008 10  31.321664 01 39 48.73   -01 53 01.8   22.7V 13OR11    645  C~1vX1      
2011 09  23.47044  02 09 39.797  +03 48 06.07  22.5w 13OR11    F51  C~1vX1      
2011 09  23.48579  02 09 39.723  +03 48 05.46  22.3w 13OR11    F51  C~1vX1      
2011 09  23.50130  02 09 39.648  +03 48 05.30  22.7w 13OR11    F51  C~1vX1      
2011 09  23.51700  02 09 39.570  +03 48 04.76  22.4w 13OR11    F51  C~1vX1      
2013 07  20.58800  02 27 45.135  +07 24 32.59  22.2w 13OR11    F51  C~1vX1      
2013 07  20.59853  02 27 45.185  +07 24 32.96  22.3w 13OR11    F51  C~1vX1      
2013 07  20.60482  02 27 45.198  +07 24 32.99  22.3w 13OR11    F51  C~1vX1      
2013 10  03.44025  02 25 46.335  +07 11 36.59  22.4w 13OR11    F51  C~1vX1      
2013 10  03.45543  02 25 46.252  +07 11 35.90  22.3w 13OR11    F51  C~1vX1      
2013 10  03.47069  02 25 46.172  +07 11 35.46  22.4w 13OR11    F51  C~1vX1      
2013 11  25.25379  02 20 34.533  +06 53 53.28  22.0w 13OR11    F51  C~1vX1      
2013 11  25.26883  02 20 34.451  +06 53 53.11  22.0w 13OR11    F51  C~1vX1      
2013 11  25.28381  02 20 34.363  +06 53 53.00  22.1w 13OR11    F51  C~1vX1      
2013 11  25.29886  02 20 34.284  +06 53 52.87  22.2w 13OR11    F51  C~1vX1      
2014 09  02.49318  02 36 07.893  +09 01 22.58  22.4w 13OR11    F51  C~1vX1      
2014 09  02.50530  02 36 07.855  +09 01 22.47  22.3w 13OR11    F51  C~1vX1      
2014 09  02.51740  02 36 07.826  +09 01 22.32  22.3w 13OR11    F51  C~1vX1      
2014 09  02.52952  02 36 07.810  +09 01 22.03  22.4w 13OR11    F51  C~1vX1      
2014 10  02.40721  02 34 15.984  +08 52 46.91  21.4i 13OR11    F51  C~1vX1      
2014 10  02.41940  02 34 15.934  +08 52 46.75  21.8i 13OR11    F51  C~1vX1      
2014 10  02.43161  02 34 15.892  +08 52 46.37  21.5i 13OR11    F51  C~1vX1      
2014 12  13.34570  02 27 29.548  +08 32 36.87  22.4w 13OR11    F51  C~1vX1      
2014 12  13.35865  02 27 29.502  +08 32 36.88  22.0w 13OR11    F51  C~1vX1      
2014 12  13.37159  02 27 29.452  +08 32 36.95  22.2w 13OR11    F51  C~1vX1      
2014 12  13.38455  02 27 29.375  +08 32 36.67  22.1w 13OR11    F51  C~1vX1      
2015 01  10.27684  02 26 12.295  +08 35 19.73  22.4w 13OR11    F51  C~1vX1      
2015 01  10.28997  02 26 12.265  +08 35 19.80  22.4w 13OR11    F51  C~1vX1      
2015 01  10.30324  02 26 12.264  +08 35 20.09  22.2w 13OR11    F51  C~1vX1      
2015 01  10.31630  02 26 12.251  +08 35 20.25  22.6w 13OR11    F51  C~1vX1      
2016 11  03.50526  02 47 42.563  +11 56 08.04  21.5i 13OR11    F51  C~20qm      
2016 11  03.51141  02 47 42.532  +11 56 08.00  21.6i 13OR11    F51  C~20qm      
2016 11  03.51447  02 47 42.498  +11 56 07.73  21.6i 13OR11    F51  C~20qm      
2016 11  06.36758  02 47 24.786  +11 55 14.17  21.6i 13OR11    F51  C~21SH      
2016 11  06.37065  02 47 24.774  +11 55 14.06  21.6i 13OR11    F51  C~21SH      

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    -0.15
  2   0.0000      0.00     0.15       0.00    -0.13
  3   0.0000      0.00    -0.07       0.00    -0.09
  4   2.8943      0.00    -0.00       0.00     0.30
  5   2.8944      0.00     0.03       0.00     0.09
  6   2.8944      0.00     0.05       0.00     0.33
  7   2.8945      0.00     0.04       0.00     0.20
  8   4.7181      0.00    -0.27       0.00    -0.14
  9   4.7181      0.00     0.06       0.00     0.13
 10   4.7181      0.00     0.00       0.00     0.10
 11   4.9230      0.00     0.02       0.00     0.30
 12   4.9230      0.00    -0.00       0.00    -0.04
 13   4.9231      0.00     0.03       0.00    -0.12
 14   5.0676      0.00     0.18       0.00     0.08
 15   5.0676      0.00     0.20       0.00     0.08
 16   5.0677      0.00     0.12       0.00     0.14
 17   5.0677      0.00     0.18       0.00     0.18
 18   5.8376      0.00    -0.00       0.00    -0.11
 19   5.8376      0.00    -0.15       0.00    -0.08
 20   5.8376      0.00    -0.16       0.00    -0.08
 21   5.8377      0.00     0.02       0.00    -0.23
 22   5.9195      0.00    -0.06       0.00     0.03
 23   5.9195      0.00     0.13       0.00     0.13
 24   5.9195      0.00     0.45       0.00     0.01
 25   6.1164      0.00    -0.19       0.00    -0.30
 26   6.1165      0.00    -0.04       0.00    -0.25
 27   6.1165      0.00     0.05       0.00    -0.14
 28   6.1165      0.00    -0.26       0.00    -0.38
 29   6.1929      0.00     0.09       0.00     0.05
 30   6.1929      0.00    -0.11       0.00    -0.08
 31   6.1930      0.00     0.12       0.00     0.01
 32   6.1930      0.00     0.17       0.00    -0.02
 33   8.0087      0.00     0.16       0.00     0.08
 34   8.0087      0.00     0.28       0.00     0.16
 35   8.0088      0.00     0.06       0.00    -0.05
 36   8.0166      0.00     0.04       0.00     0.18
 37   8.0166      0.00     0.15       0.00     0.13

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.

13OR11    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        81.287    81.286    81.287
ecceobj         0.633     0.633     0.633
incobj         21.147    21.147    21.147
qmin           29.317    29.317    29.317
qmax          134.044   138.962   145.381
amean          78.899    80.623    81.533
amin           74.432    78.820    78.772
amax           81.993    84.545    87.906
emean           0.619     0.627     0.631
emin            0.593     0.614     0.617
emax            0.635     0.644     0.654
imean          20.553    20.541    20.505
imin           20.171    20.171    20.170
imax           21.219    21.169    21.105
excite_mean     0.712     0.719     0.722
fracstop        0.040     0.047     0.043
cjmean          2.756     2.756     2.756

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       323.8     325.5     325.2
kozaiamp          8.5      10.4      10.2