Orbit Fit and Astrometric record for 05JK186

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: 05JK186   
# Created Tue Oct 24 01:37:36 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   4.85y
# First observation: 2005/05/12
#  Last observation: 2010/03/20
Preliminary a, adot, b, bdot, g, gdot:
   0.000251   0.026667   0.000012  -0.013737   0.027212   0.000000
# Chi-squared of fit:    11.70 DOF:   30 RMS:  0.14
# Min/Max residuals:    -0.32    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.567930E-05  2.638673E-02 -8.489595E-06 -1.356178E-02  2.693966E-02 -4.351716E-03
# Covariance matrix:
  2.6773E-13 -6.5386E-15  4.9780E-15 -2.7198E-14  1.3757E-13  4.2333E-13
 -6.5386E-15  2.3689E-13  2.3266E-14 -1.2169E-13  2.1688E-13  1.9403E-12
  4.9780E-15  2.3266E-14  2.1610E-13 -6.4082E-14  2.3660E-14  2.0785E-13
 -2.7198E-14 -1.2169E-13 -6.4082E-14  8.7825E-14 -1.2616E-13 -1.0878E-12
  1.3757E-13  2.1688E-13  2.3660E-14 -1.2616E-13  4.0926E-13  1.9901E-12
  4.2333E-13  1.9403E-12  2.0785E-13 -1.0878E-12  1.9901E-12  1.7339E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.174311 -114.265638    0.240577   -0.019967   -0.977856  2453502.955713
# Heliocentric elements and errors
Epoch:              2453500.5000  =  2005/05/10
Mean Anomaly:          331.87586 +/-     0.014
Argument of Peri:      228.39790 +/-     0.026
Long of Asc Node:       63.14185 +/-     0.000
Inclination:            27.21829 +/-     0.000
Eccentricity:         0.24547742 +/-    0.0001
Semi-Major Axis:     47.47094385 +/-    0.0064
Time of Perihelion: 2462833.4089 +/-       4.3
Perihelion:          35.81789905 +/-    0.0083
Aphelion:            59.12398865 +/-    0.0104
Period (y)              327.0770 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.87694288 +/-    0.0004
Ecliptic Y          -34.62698095 +/-    0.0008
Ecliptic Z           -0.76102378 +/-    0.0000
Ecliptic XDOT         0.00263874 +/-    0.0000
Ecliptic YDOT        -0.00068028 +/-    0.0000
Ecliptic ZDOT        -0.00136886 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.10097482 +/-    0.0007
Geocenter to KBO     37.11998975 +/-    0.0009
# Hcoef:  7.00

The following table shows the complete astrometric record for 05JK186. 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 (05JK186) followed by the observatory code and reference code for the source of the astrometry.

2005 05  12.45497  16 14 26.51   -22 25 04.7   23.1g 05JK186   568  C~0X5g      
2005 05  12.48126  16 14 26.36   -22 25 04.5   23.2g 05JK186   568  C~0X5g      
2005 05  12.51255  16 14 26.19   -22 25 04.5   23.4g 05JK186   568  C~0X5g      
2005 05  13.53618  16 14 20.49   -22 24 58.6   22.7g 05JK186   568  C~0X5g      
2005 07  31.25523  16 08 18.13   -22 18 35.1   21.6i 05JK186   568  C~0X5g      
2005 07  31.29997  16 08 18.04   -22 18 35.2   21.6i 05JK186   568  C~0X5g      
2005 07  31.34422  16 08 17.95   -22 18 35.2   21.9i 05JK186   568  C~0X5g      
2008 05  07.51136  16 33 05.97   -25 29 32.0         05JK186   568  C~0X5g      
2008 05  07.53455  16 33 05.83   -25 29 31.9   22.1r 05JK186   568  C~0X5g      
2009 06  20.26392  16 35 14.63   -26 27 59.0         05JK186   695  C~0X5g      
2009 06  22.26600  16 35 03.41   -26 27 47.9         05JK186   695  C~0X5g      
2009 07  24.17184  16 32 37.93   -26 24 55.6         05JK186   675  C~0X5g      
2009 07  24.20995  16 32 37.80   -26 24 55.7         05JK186   675  C~0X5g      
2009 07  25.19530  16 32 34.62   -26 24 51.2         05JK186   675  C~0X5g      
2009 08  19.16695  16 31 47.49   -26 23 46.2   22.2r 05JK186   675  C~0X5g      
2010 03  20.45055  16 48 42.81   -27 22 41.4         05JK186   675  C~0X5g      
2010 03  20.52930  16 48 42.76   -27 22 42.8         05JK186   675  C~0X5g      
2010 03  20.53277  16 48 42.76   -27 22 42.9         05JK186   675  C~0X5g      

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    -0.04       0.00     0.11
  2   0.0001     -2.08    -0.07      -0.17     0.16
  3   0.0002     -4.40     0.05      -0.59     0.00
  4   0.0030    -83.24    -0.11      -8.76     0.15
  5   0.2185  -5096.76     0.07    -546.31    -0.07
  6   0.2186  -5097.97     0.08    -546.64    -0.14
  7   0.2187  -5099.19     0.05    -546.87    -0.12
  8   2.9871  16970.84     0.16   -8477.34    -0.10
  9   2.9872  16968.94    -0.02   -8477.51    -0.04
 10   4.1063  19212.70    -0.31  -11727.51    -0.29
 11   4.1117  19060.45    -0.32  -11737.27    -0.01
 12   4.1991  17083.88    -0.02  -11840.49     0.14
 13   4.1992  17082.16     0.00  -11840.84    -0.14
 14   4.2019  17038.88     0.08  -11842.47    -0.02
 15   4.2703  16397.79     0.22  -11868.81    -0.03
 16   4.8542  30543.45    -0.15  -13671.54     0.30
 17   4.8544  30542.95     0.15  -13673.02     0.08
 18   4.8544  30542.96     0.20  -13673.12     0.03

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.

05JK186    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        47.030    47.049    47.012
ecceobj         0.242     0.243     0.242
incobj         27.322    27.322    27.322
qmin           34.761    34.787    34.853
qmax           60.704    60.626    60.406
amean          47.400    47.399    47.355
amin           46.919    46.931    46.901
amax           48.007    48.011    47.945
emean           0.242     0.241     0.241
emin            0.220     0.217     0.220
emax            0.265     0.266     0.262
imean          25.992    26.009    26.045
imin           25.382    25.394    25.466
imax           26.676    26.699    26.679
excite_mean     0.501     0.500     0.501
fracstop        1.000     1.000     1.000
cjmean          2.824     2.825     2.824

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       185.9     183.6     178.9
kozaiamp        180.0     179.9     180.0