Orbit Fit and Astrometric record for 11OA60

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: 11OA60    
# Created Tue Oct 24 01:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:   5.96y
# First observation: 2011/07/20
#  Last observation: 2017/07/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000155   0.030523   0.000226  -0.012173   0.030579   0.000000
# Chi-squared of fit:     4.56 DOF:   38 RMS:  0.08
# Min/Max residuals:    -0.15    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.666461E-05  3.050078E-02 -6.472988E-06 -1.218755E-02  2.915328E-02  1.164761E-03
# Covariance matrix:
  2.2547E-13 -1.3933E-13 -2.7114E-14  3.5911E-14 -2.2013E-14 -5.2632E-13
 -1.3933E-13  1.5605E-13  4.0128E-14 -5.1151E-14  1.1102E-13  7.5419E-13
 -2.7114E-14  4.0128E-14  1.6617E-13 -6.3250E-14  4.4831E-14  2.3431E-13
  3.5911E-14 -5.1151E-14 -6.3250E-14  4.6274E-14 -4.6048E-14 -2.9723E-13
 -2.2013E-14  1.1102E-13  4.4831E-14 -4.6048E-14  5.6023E-13  7.0495E-13
 -5.2632E-13  7.5419E-13  2.3431E-13 -2.9723E-13  7.0495E-13  4.3859E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.945169  -69.297763   -0.111002    0.139383   -0.999137  2455762.895646
# Heliocentric elements and errors
Epoch:              2455760.5000  =  2011/07/18
Mean Anomaly:           13.32338 +/-     0.022
Argument of Peri:      142.13219 +/-     0.030
Long of Asc Node:      129.46110 +/-     0.000
Inclination:            23.05357 +/-     0.000
Eccentricity:         0.14081745 +/-    0.0001
Semi-Major Axis:     40.84477520 +/-    0.0047
Time of Perihelion: 2452231.7958 +/-       5.9
Perihelion:          35.09311819 +/-    0.0051
Aphelion:            46.59643221 +/-    0.0062
Period (y)              261.0436 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.47438352 +/-    0.0003
Ecliptic Y          -32.68239180 +/-    0.0008
Ecliptic Z            4.74116180 +/-    0.0001
Ecliptic XDOT         0.00277089 +/-    0.0000
Ecliptic YDOT         0.00076888 +/-    0.0000
Ecliptic ZDOT        -0.00111840 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.30194886 +/-    0.0008
Geocenter to KBO     34.30145609 +/-    0.0009
# Hcoef:  5.34

The following table shows the complete astrometric record for 11OA60. 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 (11OA60) followed by the observatory code and reference code for the source of the astrometry.

2011 07  20.39488  19 24 36.075  -13 59 13.19  20.3i 11OA60    F51  C~1w3n      
2011 07  20.40557  19 24 36.005  -13 59 13.26  20.2i 11OA60    F51  C~1w3n      
2011 07  20.41868  19 24 35.939  -13 59 13.61  20.7r 11OA60    F51  C~1w3n      
2011 07  20.42864  19 24 35.878  -13 59 13.85  20.6r 11OA60    F51  C~1w3n      
2011 07  27.40975  19 23 57.193  -14 01 41.93  21.6g 11OA60    F51  C~1w3n      
2011 07  27.41995  19 23 57.144  -14 01 42.17  21.7g 11OA60    F51  C~1w3n      
2012 07  28.36500  19 31 20.319  -14 28 09.63  20.0i 11OA60    F51  C~1w3n      
2013 07  01.46850  19 41 24.794  -14 43 41.34  20.3r 11OA60    F51  C~1w3n      
2013 07  08.43097  19 40 46.273  -14 45 51.28  20.3w 11OA60    F51  C~1w3n      
2013 07  08.44433  19 40 46.197  -14 45 51.53  20.3w 11OA60    F51  C~1w3n      
2013 07  08.45830  19 40 46.119  -14 45 51.84  20.3w 11OA60    F51  C~1w3n      
2013 07  08.47167  19 40 46.041  -14 45 52.04  20.3w 11OA60    F51  C~1w3n      
2013 07  19.39883  19 39 44.343  -14 49 37.32  20.0i 11OA60    F51  C~1w3n      
2013 07  19.40963  19 39 44.285  -14 49 37.50  20.1i 11OA60    F51  C~1w3n      
2013 07  19.46409  19 39 43.963  -14 49 38.82  20.6r 11OA60    F51  C~1w3n      
2013 07  19.47381  19 39 43.913  -14 49 38.93  20.2r 11OA60    F51  C~1w3n      
2013 10  28.21572  19 35 46.162  -15 24 09.74  20.6w 11OA60    F51  C~1w3n      
2013 10  28.22087  19 35 46.174  -15 24 09.87  20.8w 11OA60    F51  C~1w3n      
2013 10  28.22603  19 35 46.191  -15 24 09.96  20.9w 11OA60    F51  C~1w3n      
2013 10  28.23119  19 35 46.202  -15 24 10.07  20.7w 11OA60    F51  C~1w3n      
2017 07  04.36394  20 11 19.86   -16 12 52.0   20.3R 11OA60    G37  C~2IXf      
2017 07  04.40761  20 11 19.63   -16 12 52.9         11OA60    G37  C~2IXf      

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    -0.03       0.00    -0.03
  2   0.0000     -1.02    -0.13       0.08     0.14
  3   0.0001     -2.02    -0.01      -0.13     0.04
  4   0.0001     -2.93    -0.08      -0.24     0.01
  5   0.0192   -581.45     0.13     -65.36     0.12
  6   0.0192   -582.19     0.24     -65.50     0.09
  7   1.0239   5556.31     0.07   -2590.59     0.05
  8   1.9496  14097.50    -0.07   -4899.73     0.10
  9   1.9686  13522.33    -0.03   -4936.75    -0.08
 10   1.9687  13521.19    -0.02   -4936.82    -0.07
 11   1.9687  13520.02    -0.00   -4936.94    -0.11
 12   1.9687  13518.87    -0.02   -4936.95    -0.05
 13   1.9986  12595.54    -0.02   -5014.08    -0.03
 14   1.9987  12594.68     0.04   -5014.12     0.01
 15   1.9988  12589.84    -0.11   -5014.67    -0.11
 16   1.9988  12589.10    -0.01   -5014.66    -0.02
 17   2.2747   8849.97     0.01   -6511.63     0.01
 18   2.2747   8850.13    -0.03   -6511.78    -0.06
 19   2.2747   8850.35     0.01   -6511.91    -0.10
 20   2.2747   8850.50    -0.04   -6512.04    -0.15
 21   5.9575  39161.31     0.02  -15026.53     0.09
 22   5.9576  39157.75     0.06  -15026.74     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.

11OA60    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.673    40.687    40.659
ecceobj         0.138     0.138     0.138
incobj         23.062    23.062    23.062
qmin           34.067    34.140    34.049
qmax           48.011    47.883    48.109
amean          40.897    40.894    40.894
amin           40.513    40.544    40.530
amax           41.279    41.275    41.301
emean           0.145     0.141     0.145
emin            0.126     0.123     0.125
emax            0.165     0.163     0.166
imean          21.571    21.640    21.576
imin           20.702    20.818    20.811
imax           22.404    22.444    22.404
excite_mean     0.395     0.395     0.395
fracstop        1.000     1.000     1.000
cjmean          2.882     2.882     2.882

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       181.2     178.8     180.0
kozaiamp        180.0     180.0     179.9