Orbit Fit and Astrometric record for 11OB60

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: 11OB60    
# Created Wed Dec 13 02:37:41 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   3.06y
# First observation: 2010/09/14
#  Last observation: 2013/10/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000805   0.031242   0.000199  -0.010852   0.026463   0.000000
# Chi-squared of fit:    17.11 DOF:   34 RMS:  0.16
# Min/Max residuals:    -0.53    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.845438E-05  3.019328E-02 -5.779760E-06 -1.051824E-02  2.595308E-02 -7.918522E-03
# Covariance matrix:
  1.2906E-12 -1.3549E-12 -2.3335E-13  3.9067E-13 -6.8669E-13 -9.9637E-12
 -1.3549E-12  1.9717E-12  3.6856E-13 -6.1749E-13  5.2565E-13  1.5757E-11
 -2.3335E-13  3.6856E-13  3.8344E-13 -2.4311E-13  9.3106E-14  3.0481E-12
  3.9067E-13 -6.1749E-13 -2.4311E-13  2.6355E-13 -1.5545E-13 -5.1072E-12
 -6.8669E-13  5.2565E-13  9.3106E-14 -1.5545E-13  8.0113E-13  3.9570E-12
 -9.9637E-12  1.5757E-11  3.0481E-12 -5.1072E-12  3.9570E-12  1.3033E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.745210  -27.338940   -0.319777   -0.062045   -0.947170  2455453.807196
# Heliocentric elements and errors
Epoch:              2455450.5000  =  2010/09/11
Mean Anomaly:          353.92526 +/-     0.009
Argument of Peri:      225.86747 +/-     0.043
Long of Asc Node:      142.69044 +/-     0.000
Inclination:            19.42246 +/-     0.000
Eccentricity:         0.64353756 +/-    0.0003
Semi-Major Axis:    103.00263312 +/-    0.0691
Time of Perihelion: 2461893.6171 +/-       6.6
Perihelion:          36.71657000 +/-    0.0385
Aphelion:           169.28869623 +/-    0.1174
Period (y)             1045.3957 +/-      1.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.14881281 +/-    0.0012
Ecliptic Y          -17.81035675 +/-    0.0006
Ecliptic Z           -2.51703343 +/-    0.0001
Ecliptic XDOT         0.00065841 +/-    0.0000
Ecliptic YDOT         0.00325184 +/-    0.0000
Ecliptic ZDOT        -0.00105268 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.48396265 +/-    0.0011
Geocenter to KBO     38.53107609 +/-    0.0013
# Hcoef:  6.86

The following table shows the complete astrometric record for 11OB60. 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 (11OB60) followed by the observatory code and reference code for the source of the astrometry.

2010 09  14.30643  22 24 02.333  -14 01 03.38  22.2i 11OB60    F51  C~1w3n      
2011 07  27.47959  22 35 12.860  -13 29 44.50  23.0w 11OB60    F51  C~1w3n      
2011 07  27.49431  22 35 12.792  -13 29 44.67  23.3w 11OB60    F51  C~1w3n      
2011 07  27.50899  22 35 12.754  -13 29 45.58  23.1w 11OB60    F51  C~1w3n      
2011 07  27.52372  22 35 12.696  -13 29 46.07  23.1w 11OB60    F51  C~1w3n      
2011 08  24.43147  22 33 15.444  -13 45 08.91  22.9w 11OB60    F51  C~1w3n      
2011 08  24.44547  22 33 15.368  -13 45 09.46  23.0w 11OB60    F51  C~1w3n      
2011 08  24.45944  22 33 15.317  -13 45 09.89  23.0w 11OB60    F51  C~1w3n      
2011 08  24.47342  22 33 15.247  -13 45 10.54  23.0w 11OB60    F51  C~1w3n      
2012 08  17.48510  22 41 27.063  -13 35 45.28  22.6w 11OB60    F51  C~1w3n      
2013 08  09.44837  22 49 51.561  -13 24 01.87  22.6w 11OB60    F51  C~1w3n      
2013 08  09.45998  22 49 51.522  -13 24 02.11  22.5w 11OB60    F51  C~1w3n      
2013 08  09.46261  22 49 51.532  -13 24 02.50  22.6w 11OB60    F51  C~1w3n      
2013 08  09.47423  22 49 51.462  -13 24 02.70  22.5w 11OB60    F51  C~1w3n      
2013 08  09.47686  22 49 51.452  -13 24 02.91  22.4w 11OB60    F51  C~1w3n      
2013 08  09.49111  22 49 51.395  -13 24 03.51  22.5w 11OB60    F51  C~1w3n      
2013 08  26.49511  22 48 36.891  -13 33 58.58  21.6i 11OB60    F51  C~1w3n      
2013 08  31.45587  22 48 14.029  -13 36 50.01  22.3w 11OB60    F51  C~1w3n      
2013 10  06.31738  22 45 38.623  -13 54 24.23  22.8w 11OB60    F51  C~1w3n      
2013 10  06.33163  22 45 38.554  -13 54 24.76  22.7w 11OB60    F51  C~1w3n      

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    -0.01       0.00    -0.13
  2   0.8656   9779.51     0.16   -1866.59     0.06
  3   0.8657   9778.53     0.09   -1866.37     0.40
  4   0.8657   9777.67     0.14   -1867.01    -0.11
  5   0.8658   9776.70     0.09   -1867.15    -0.11
  6   0.9422   7842.72    -0.01   -2083.42     0.12
  7   0.9422   7841.48    -0.19   -2083.52     0.11
  8   0.9422   7840.63     0.02   -2083.64     0.06
  9   0.9423   7839.44    -0.11   -2083.86    -0.08
 10   1.9252  14714.39    -0.32   -4270.35    -0.53
 11   2.9025  21837.49    -0.21   -6472.59     0.11
 12   2.9025  21836.87    -0.01   -6472.59     0.20
 13   2.9025  21836.85     0.16   -6473.01    -0.20
 14   2.9026  21835.82    -0.05   -6472.80     0.12
 15   2.9026  21835.60    -0.08   -6472.93     0.00
 16   2.9026  21834.59    -0.09   -6473.16    -0.11
 17   2.9492  20588.58     0.09   -6598.16     0.12
 18   2.9628  20211.06     0.23   -6626.51     0.01
 19   3.0609  17693.12     0.20   -6720.66     0.04
 20   3.0610  17691.98    -0.09   -6720.76    -0.07

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.

11OB60    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       102.466   102.644   102.287
ecceobj         0.642     0.643     0.641
incobj         19.433    19.433    19.433
qmin           35.235    35.325    35.324
qmax          172.695   172.835   172.513
amean         101.619   101.215   101.409
amin           99.636    98.907    98.989
amax          104.585   104.555   104.595
emean           0.639     0.638     0.637
emin            0.628     0.622     0.627
emax            0.653     0.653     0.652
imean          18.066    18.022    18.212
imin           17.029    17.234    17.218
imax           18.732    19.235    18.903
excite_mean     0.710     0.709     0.710
fracstop        1.000     1.000     1.000
cjmean          2.983     2.982     2.984

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       211.0     214.3     220.6
kozaiamp        180.0     180.0     180.0