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 Thu Aug 16 01:38:01 2018
# Orbit generated from Bernstein formalism
# Fitting   50 observations of   50
# Arc:  19.08y
# First observation: 1999/03/20
#  Last observation: 2018/04/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.004116   0.047453   0.000642  -0.002517   0.052801   0.000000
# Chi-squared of fit:    21.06 DOF:   94 RMS:  0.11
# Min/Max residuals:    -0.36    0.27
# Exact a, adot, b, bdot, g, gdot:
  2.139143E-05  4.004301E-02 -6.718425E-07 -2.209595E-03  3.105916E-02 -2.734340E-03
# Covariance matrix:
  1.8955E-13 -2.0349E-14 -7.1237E-16  5.4390E-16  1.1526E-14 -1.2379E-14
 -2.0349E-14  1.0809E-14  8.5284E-16 -5.2504E-16  1.5962E-14  1.2284E-14
 -7.1237E-16  8.5284E-16  1.6967E-13 -1.1174E-14  1.5400E-15  1.0437E-15
  5.4390E-16 -5.2504E-16 -1.1174E-14  8.6458E-16 -7.0591E-16 -6.5197E-16
  1.1526E-14  1.5962E-14  1.5400E-15 -7.0591E-16  8.5981E-14  1.7311E-14
 -1.2379E-14  1.2284E-14  1.0437E-15 -6.5197E-16  1.7311E-14  1.5222E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   10.953023 -152.940208    0.466718    0.168659   -0.872819  2451257.880813
# Heliocentric elements and errors
Epoch:              2451250.5000  =  1999/03/13
Mean Anomaly:          353.49927 +/-     0.001
Argument of Peri:      122.21782 +/-     0.001
Long of Asc Node:      100.26800 +/-     0.000
Inclination:            11.07967 +/-     0.000
Eccentricity:         0.40322250 +/-    0.0000
Semi-Major Axis:     54.74946455 +/-    0.0038
Time of Perihelion: 2453922.4476 +/-       0.2
Perihelion:          32.67324851 +/-    0.0030
Aphelion:            76.82568059 +/-    0.0056
Period (y)              405.1147 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.14526544 +/-    0.0003
Ecliptic Y          -14.36905980 +/-    0.0001
Ecliptic Z            6.11750046 +/-    0.0001
Ecliptic XDOT         0.00178140 +/-    0.0000
Ecliptic YDOT        -0.00304369 +/-    0.0000
Ecliptic ZDOT        -0.00023701 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.06569505 +/-    0.0002
Geocenter to KBO     32.19662321 +/-    0.0003
# Hcoef:  8.03

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.

1999 03  20.380070 13 56 08.65   -00 11 27.9   23.5V 13JK64    645  C~2e9b      
1999 03  20.380899 13 56 08.65   -00 11 27.9         13JK64    645  C~2e9b      
1999 03  20.383387 13 56 08.64   -00 11 27.8         13JK64    645  C~2e9b      
1999 03  22.374335 13 55 59.68   -00 10 18.6   23.5V 13JK64    645  C~2e9b      
1999 03  22.375165 13 55 59.68   -00 10 18.6         13JK64    645  C~2e9b      
1999 03  22.377653 13 55 59.67   -00 10 18.5         13JK64    645  C~2e9b      
2001 05  24.262622 14 07 23.09   -01 34 24.6   23.4V 13JK64    645  C~2e9b      
2001 05  24.263451 14 07 23.09   -01 34 24.6         13JK64    645  C~2e9b      
2001 05  24.265939 14 07 23.08   -01 34 24.6         13JK64    645  C~2e9b      
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      
2018 04  18.40572  16 39 12.761  -16 12 55.96  23.5R 13JK64    705              
2018 04  19.45773  16 39 08.642  -16 12 43.76        13JK64    705              

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    -0.21       0.00    -0.09
  2   0.0000      0.00    -0.14       0.00    -0.10
  3   0.0000     -0.18    -0.13       0.04    -0.08
  4   0.0055   -150.37     0.00      17.14     0.06
  5   0.0055   -150.37     0.07      17.14     0.06
  6   0.0055   -150.55     0.09      17.18     0.08
  7   2.1790  11233.06     0.08   -1075.05    -0.05
  8   2.1790  11233.06     0.14   -1075.05    -0.04
  9   2.1790  11232.92     0.17   -1075.10    -0.06
 10  14.0566 129663.26    -0.00   -6983.07     0.01
 11  14.0593 129579.87     0.02   -6981.97     0.02
 12  14.0594 129576.23     0.02   -6982.00    -0.02
 13  14.0840 128730.13    -0.03   -6987.73     0.10
 14  14.1251 127112.19    -0.00   -7059.28     0.02
 15  14.1251 127111.86    -0.23   -7059.41    -0.09
 16  14.1251 127112.00     0.02   -7059.17     0.15
 17  14.1330 126779.38    -0.15   -7081.62     0.10
 18  14.1331 126774.21    -0.11   -7082.05     0.05
 19  14.1332 126769.58     0.00   -7082.36     0.09
 20  14.1386 126541.56    -0.11   -7099.20     0.05
 21  14.1413 126423.83    -0.10   -7108.14     0.22
 22  14.2095 123529.17     0.04   -7425.20    -0.09
 23  14.2150 123308.21     0.14   -7457.19     0.17
 24  14.2860 120870.14    -0.08   -7934.92     0.07
 25  14.2888 120793.43    -0.10   -7955.63     0.12
 26  14.9629 143019.13     0.12   -7838.62    -0.08
 27  14.9629 143019.10     0.12   -7838.48     0.01
 28  14.9656 143012.89     0.10   -7827.06     0.01
 29  15.1157 139185.22     0.08   -7660.94    -0.06
 30  15.1159 139179.35     0.25   -7661.29    -0.05
 31  15.1160 139172.26     0.05   -7661.79    -0.15
 32  15.1240 138835.63     0.08   -7681.18    -0.04
 33  15.1241 138829.60     0.12   -7681.55    -0.00
 34  15.1242 138823.39     0.00   -7681.92     0.02
 35  15.1736 136623.78    -0.05   -7864.20    -0.16
 36  15.1817 136258.97     0.02   -7903.07    -0.12
 37  15.2035 135289.75    -0.08   -8018.99     0.05
 38  15.2554 133187.06    -0.02   -8348.22    -0.09
 39  15.2581 133090.67     0.16   -8366.57     0.03
 40  15.2801 132348.23     0.01   -8523.20    -0.12
 41  15.2827 132266.54     0.03   -8542.20     0.02
 42  15.3292 131108.27    -0.01   -8887.93    -0.03
 43  15.3509 130773.60     0.11   -9049.69    -0.01
 44  16.0060 154873.84     0.11   -8335.76     0.18
 45  16.0799 152882.21    -0.12   -8259.54     0.17
 46  17.1312 163604.47    -0.15   -9038.39     0.04
 47  17.1313 163597.41    -0.35   -9038.73     0.15
 48  17.1313 163595.77    -0.19   -9038.94     0.05
 49  19.0802 193870.59     0.27  -10414.43    -0.16
 50  19.0830 193756.72    -0.05  -10417.12    -0.36

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        54.718    54.730    54.707
ecceobj         0.403     0.403     0.403
incobj         11.082    11.082    11.082
qmin           31.954    31.960    31.951
qmax           80.283    80.209    80.342
amean          55.462    55.461    55.462
amin           54.718    54.730    54.707
amax           56.384    56.381    56.463
emean           0.412     0.412     0.412
emin            0.400     0.401     0.399
emax            0.424     0.424     0.424
imean           9.269     9.227     9.347
imin            8.907     8.937     8.880
imax            9.694     9.562     9.867
excite_mean     0.442     0.442     0.442
fracstop        1.000     1.000     1.000
cjmean          2.984     2.984     2.984

libcent 0       178.8     178.6     179.4
libamp  0        77.5      74.7      82.0
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       199.5     193.6     205.6
kozaiamp         73.5      67.7      79.5