Orbit Fit and Astrometric record for 13JK64

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: 13JK64    
# Created Tue Dec 12 02:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   39 observations of   39
# Arc:   3.07y
# First observation: 2013/04/09
#  Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000202   0.039431   0.000008  -0.005812   0.030690   0.000000
# Chi-squared of fit:     5.81 DOF:   72 RMS:  0.07
# Min/Max residuals:    -0.15    0.17
# Exact a, adot, b, bdot, g, gdot:
  2.015487E-05  3.950220E-02 -2.889081E-06 -5.835146E-03  3.098389E-02  3.920397E-03
# Covariance matrix:
  1.2458E-13 -8.1651E-14 -2.6305E-15  6.0696E-15  6.1772E-14 -3.9117E-13
 -8.1651E-14  2.8420E-13  1.0594E-14 -3.7087E-14  1.1226E-13  2.4724E-12
 -2.6305E-15  1.0594E-14  7.8573E-14 -4.7561E-14  3.2007E-15  1.1309E-13
  6.0696E-15 -3.7087E-14 -4.7561E-14  5.8024E-14 -1.7260E-14 -3.9514E-13
  6.1772E-14  1.1226E-13  3.2007E-15 -1.7260E-14  2.0684E-13  1.1766E-12
 -3.9117E-13  2.4724E-12  1.1309E-13 -3.9514E-13  1.1766E-12  2.6339E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.623682 -120.478896    0.641255    0.102377   -0.764725  2456392.055928
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:            6.19569 +/-     0.009
Argument of Peri:      121.70429 +/-     0.024
Long of Asc Node:      100.21190 +/-     0.001
Inclination:            11.09010 +/-     0.000
Eccentricity:         0.40618937 +/-    0.0001
Semi-Major Axis:     55.02791704 +/-    0.0065
Time of Perihelion: 2453824.4770 +/-       3.7
Perihelion:          32.67616227 +/-    0.0058
Aphelion:            77.37967180 +/-    0.0101
Period (y)              408.2092 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -17.16853613 +/-    0.0002
Ecliptic Y          -27.90658677 +/-    0.0004
Ecliptic Z            4.28172057 +/-    0.0001
Ecliptic XDOT         0.00279306 +/-    0.0000
Ecliptic YDOT        -0.00212500 +/-    0.0000
Ecliptic ZDOT        -0.00046496 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.04344639 +/-    0.0004
Geocenter to KBO     32.27483780 +/-    0.0005
# Hcoef:  7.99

The following table shows the complete astrometric record for 13JK64. 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 (13JK64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.55515  15 55 58.457  -12 35 42.79  23.4r 13JK64    568  C~1XRd      
2013 04  10.52413  15 55 54.567  -12 35 24.67  22.9r 13JK64    568  C~1XRd      
2013 04  10.56492  15 55 54.396  -12 35 23.94  23.0r 13JK64    568  C~1XRd      
2013 04  19.57778  15 55 14.557  -12 32 33.17  23.2r 13JK64    568  C~1XRd      
2013 05  04.56299  15 53 56.927  -12 27 52.89        13JK64    568  C~1XRd      
2013 05  04.56389  15 53 56.909  -12 27 52.92        13JK64    568  C~1XRd      
2013 05  04.56481  15 53 56.920  -12 27 52.76        13JK64    568  C~1XRd      
2013 05  07.45588  15 53 40.761  -12 27 00.99  22.8r 13JK64    568  C~1XRd      
2013 05  07.50007  15 53 40.508  -12 27 00.25  23.0r 13JK64    568  C~1XRd      
2013 05  07.54026  15 53 40.283  -12 26 59.53  23.0r 13JK64    568  C~1XRd      
2013 05  09.50053  15 53 29.167  -12 26 25.13  23.1r 13JK64    568  C~1XRd      
2013 05  10.50767  15 53 23.419  -12 26 07.55  22.9r 13JK64    568  C~1XRd      
2013 06  04.38901  15 50 59.490  -12 20 09.28  22.9r 13JK64    568  C~1XRd      
2013 06  06.39243  15 50 48.294  -12 19 47.90  22.8r 13JK64    568  C~1XRd      
2013 07  02.32839  15 48 41.814  -12 17 31.00  23.4r 13JK64    568  C~1XRd      
2013 07  03.36611  15 48 37.710  -12 17 31.26  23.1r 13JK64    568  C~1XRd      
2014 03  06.58616  16 05 53.797  -13 30 48.68  23.1r 13JK64    568  C~1XRd      
2014 03  06.59120  16 05 53.798  -13 30 48.56  23.0r 13JK64    568  C~1XRd      
2014 03  07.56585  16 05 53.713  -13 30 38.45  23.3r 13JK64    568  C~1XRd      
2014 05  01.40606  16 03 04.928  -13 16 22.16  22.9r 13JK64    568  C~1XRd      
2014 05  01.45743  16 03 04.657  -13 16 21.31  23.0r 13JK64    568  C~1XRd      
2014 05  01.51609  16 03 04.328  -13 16 20.34  23.1r 13JK64    568  C~1XRd      
2014 05  04.40376  16 02 48.780  -13 15 30.86  23.0r 13JK64    568  C~1XRd      
2014 05  04.45442  16 02 48.501  -13 15 29.99  22.9r 13JK64    568  C~1XRd      
2014 05  04.50508  16 02 48.214  -13 15 29.09  23.0r 13JK64    568  C~1XRd      
2014 05  22.53753  16 01 05.127  -13 10 46.58  22.7r 13JK64    568  C~1XRd      
2014 05  25.49675  16 00 47.790  -13 10 06.08  22.7r 13JK64    568  C~1XRd      
2014 06  02.47294  16 00 01.382  -13 08 27.86  22.9r 13JK64    568  C~1XRd      
2014 06  21.43206  15 58 18.698  -13 05 53.68  22.9r 13JK64    568  C~1XRd      
2014 06  22.40477  15 58 13.912  -13 05 49.12  23.3r 13JK64    568  C~1XRd      
2014 06  30.42685  15 57 36.716  -13 05 26.01  23.3r 13JK64    568  C~1XRd      
2014 07  01.38714  15 57 32.585  -13 05 24.85  22.9r 13JK64    568  C~1XRd      
2014 07  18.36111  15 56 32.515  -13 06 09.27  22.9r 13JK64    568  C~1XRd      
2014 07  26.28881  15 56 14.011  -13 07 11.67  23.1r 13JK64    568  C~1XRd      
2015 03  22.57876  16 14 20.471  -14 12 31.24  23.1r 13JK64    568  C~1XRd      
2015 04  18.56543  16 12 56.949  -14 05 50.43  22.9r 13JK64    568  C~1XRd      
2016 05  06.53851  16 20 12.826  -14 45 20.68  22.9r 13JK64    568  C~2LSW      
2016 05  06.59080  16 20 12.532  -14 45 19.81  25.9u 13JK64    568  C~2LSW      
2016 05  06.60444  16 20 12.462  -14 45 19.71  22.9r 13JK64    568  C~2LSW      

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     0.00       0.00    -0.02
  2   0.0027    -59.46     0.02       5.95    -0.01
  3   0.0028    -62.06     0.02       6.15    -0.04
  4   0.0274   -668.06    -0.00      52.42     0.06
  5   0.0685  -1838.37     0.02      90.09    -0.00
  6   0.0685  -1838.62    -0.15      90.01    -0.09
  7   0.0685  -1838.50     0.05      90.20     0.10
  8   0.0764  -2080.79    -0.07      91.42     0.07
  9   0.0765  -2084.57    -0.05      91.37     0.03
 10   0.0766  -2087.94     0.03      91.39     0.05
 11   0.0820  -2254.38    -0.05      91.01     0.02
 12   0.0847  -2340.40    -0.03      90.60     0.17
 13   0.1529  -4477.88     0.07      -2.45    -0.10
 14   0.1583  -4642.84     0.17     -16.24     0.12
 15   0.2294  -6484.53     0.01    -276.40     0.04
 16   0.2322  -6543.30     0.00    -289.50     0.09
 17   0.9063   9193.88     0.01   -1481.44    -0.08
 18   0.9063   9193.87     0.02   -1481.31    -0.01
 19   0.9090   9190.66     0.00   -1471.64    -0.00
 20   1.0591   6602.83     0.00   -1120.83    -0.06
 21   1.0593   6598.78     0.12   -1120.79    -0.07
 22   1.0594   6593.87    -0.02   -1120.80    -0.14
 23   1.0673   6361.33     0.00   -1117.72    -0.04
 24   1.0675   6357.16     0.04   -1117.68    -0.02
 25   1.0676   6352.87    -0.04   -1117.64     0.01
 26   1.1170   4820.33    -0.08   -1143.42    -0.14
 27   1.1251   4564.02    -0.03   -1154.89    -0.11
 28   1.1469   3880.02    -0.09   -1195.95     0.04
 29   1.1988   2379.64    -0.05   -1350.52    -0.08
 30   1.2015   2310.25     0.09   -1360.36     0.00
 31   1.2235   1773.55    -0.03   -1449.07    -0.11
 32   1.2261   1714.24    -0.01   -1460.32     0.01
 33   1.2726    864.48    -0.03   -1684.34    -0.04
 34   1.2943    612.84     0.05   -1801.18    -0.02
 35   1.9494  16949.34     0.08   -2518.48     0.12
 36   2.0233  15672.53    -0.07   -2353.68     0.13
 37   3.0746  22393.71     0.05   -3513.69     0.01
 38   3.0747  22389.31    -0.06   -3513.61     0.10
 39   3.0747  22388.28     0.03   -3513.69     0.02

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.

13JK64    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        54.723    54.745    54.701
ecceobj         0.403     0.403     0.403
incobj         11.082    11.082    11.082
qmin           31.949    31.982    31.948
qmax           80.264    80.279    80.357
amean          55.462    55.462    55.462
amin           54.723    54.744    54.701
amax           56.391    56.387    56.446
emean           0.412     0.412     0.411
emin            0.400     0.400     0.398
emax            0.424     0.424     0.424
imean           9.284     9.323     9.360
imin            8.911     9.004     8.869
imax            9.710     9.780     9.894
excite_mean     0.442     0.443     0.442
fracstop        1.000     1.000     1.000
cjmean          2.984     2.984     2.984

libcent 0       181.2     179.4     180.6
libamp  0        76.1      73.8      84.7
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       198.3     193.4     208.3
kozaiamp         71.9      70.8      81.9