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 Sat Dec  4 02:10:25 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     21 observations of     21
# Arc:   7.00y
# First observation: 2005/05/12
#  Last observation: 2012/05/12
# Chi-squared of fit:    16.83 DOF:     36 RMS:  0.16
# Min/Max residuals:    -0.40    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.551863E-05  2.638630E-02 -8.634521E-06 -1.356146E-02  2.693923E-02 -4.355799E-03
# Covariance matrix:
  2.4662E-13 -5.5853E-14 -3.7123E-15  5.7918E-15  8.2347E-14 -7.4966E-14
 -5.5853E-14  8.3993E-14  1.9282E-14 -3.8893E-14  5.5554E-14  4.8333E-13
 -3.7123E-15  1.9282E-14  2.0270E-13 -5.1200E-14  1.5872E-14  1.3111E-13
  5.7918E-15 -3.8893E-14 -5.1200E-14  3.4158E-14 -3.5498E-14 -2.6551E-13
  8.2347E-14  5.5554E-14  1.5872E-14 -3.5498E-14  2.3668E-13  4.3500E-13
 -7.4966E-14  4.8333E-13  1.3111E-13 -2.6551E-13  4.3500E-13  3.2978E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.174311 -114.265638    0.240578   -0.019967   -0.977857  2453502.955713
# Heliocentric elements and errors
Epoch:              2453502.5000  =  2005/05/12
Mean Anomaly:          331.87345 +/-     0.008
Argument of Peri:      228.42280 +/-     0.014
Long of Asc Node:       63.14181 +/-     0.000
Inclination:            27.21815 +/-     0.000
Eccentricity:         0.24560552 +/-    0.0001
Semi-Major Axis:     47.47537201 +/-    0.0046
Time of Perihelion: 2462837.5147 +/-      16.4
Perihelion:          35.81515871 +/-    0.0049
Aphelion:            59.13558531 +/-    0.0068
Period (y)              327.1228 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.87719246 +/-    0.0003
Ecliptic Y          -34.62752011 +/-    0.0006
Ecliptic Z           -0.76104134 +/-    0.0000
Ecliptic XDOT         0.00263891 +/-    0.0000
Ecliptic YDOT        -0.00067990 +/-    0.0000
Ecliptic ZDOT        -0.00136885 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.10166626 +/-    0.0006
Geocenter to KBO     37.12070560 +/-    0.0007
# Hcoef:  6.59

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      
2011 05  24.47475  16 51 09.916  -28 29 28.17  22.5G 05JK186   F51  C~2rXj      
2011 05  30.41031  16 50 33.804  -28 29 28.67  21.5G 05JK186   F51  C~2rXj      
2012 05  12.50445  16 59 07.277  -29 27 24.73  22.8G 05JK186   F51  C~2rXj      

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     0.02       0.00     0.14
     2   0.0001      0.00    -0.00       0.00     0.19
     3   0.0002      0.00     0.09       0.00     0.02
     4   0.0030      0.00    -0.05       0.00     0.19
     5   0.2185      0.00     0.02       0.00    -0.05
     6   0.2186      0.00     0.01       0.00    -0.13
     7   0.2187      0.00    -0.02       0.00    -0.11
     8   2.9871      0.00     0.24       0.00    -0.20
     9   2.9872      0.00     0.05       0.00    -0.11
    10   4.1063      0.00    -0.40       0.00    -0.29
    11   4.1117      0.00    -0.37       0.00    -0.01
    12   4.1991      0.00    -0.02       0.00     0.10
    13   4.1992      0.00    -0.04       0.00    -0.18
    14   4.2019      0.00     0.06       0.00    -0.07
    15   4.2703      0.00     0.21       0.00    -0.10
    16   4.8542      0.00    -0.26       0.00     0.30
    17   4.8544      0.00     0.04       0.00     0.06
    18   4.8544      0.00     0.09       0.00     0.01
    19   6.0315      0.00    -0.07       0.00     0.14
    20   6.0478      0.00     0.03       0.00     0.05
    21   7.0008      0.00     0.30       0.00     0.05

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        47.034    47.034    47.034
ecceobj         0.242     0.242     0.242
incobj         27.322    27.322    27.322
qmin           34.828    34.832    34.824
qmax           60.398    60.427    60.402
amean          47.389    47.387    47.392
amin           46.944    46.926    46.947
amax           47.992    47.982    48.006
emean           0.241     0.241     0.241
emin            0.219     0.220     0.218
emax            0.262     0.262     0.262
imean          26.019    26.017    26.029
imin           25.445    25.430    25.438
imax           26.677    26.693    26.704
excite_mean     0.501     0.501     0.501
fracstop        1.000     1.000     1.000
cjmean          2.824     2.824     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       181.7     181.1     182.2
kozaiamp        180.0     179.9     179.9