Orbit Fit and Astrometric record for 13JZ64

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: 13JZ64    
# Created Tue Dec 12 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   3.82y
# First observation: 2013/04/09
#  Last observation: 2017/02/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000087   0.042103  -0.000020  -0.003679   0.033163   0.000000
# Chi-squared of fit:    10.22 DOF:   60 RMS:  0.10
# Min/Max residuals:    -0.26    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.901507E-05  4.258147E-02 -1.709016E-06 -3.729273E-03  3.380281E-02 -8.796754E-04
# Covariance matrix:
  1.3811E-13 -9.9242E-14 -4.6231E-15  6.7954E-15  8.5296E-14 -3.2244E-13
 -9.9242E-14  2.9011E-13  5.4305E-15 -1.9781E-14  1.4801E-13  1.7961E-12
 -4.6231E-15  5.4305E-15  9.1328E-14 -6.0734E-14 -6.4215E-15  4.4977E-14
  6.7954E-15 -1.9781E-14 -6.0734E-14  7.9103E-14 -4.8808E-15 -1.6604E-13
  8.5296E-14  1.4801E-13 -6.4215E-15 -4.8808E-15  4.1971E-13  1.2724E-12
 -3.2244E-13  1.7961E-12  4.4977E-14 -1.6604E-13  1.2724E-12  1.5142E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.152302 -123.059200    0.606140    0.127176   -0.789245  2456392.036308
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          352.63257 +/-     0.017
Argument of Peri:      130.37623 +/-     0.027
Long of Asc Node:      117.08458 +/-     0.002
Inclination:            10.13499 +/-     0.000
Eccentricity:         0.23022038 +/-    0.0001
Semi-Major Axis:     39.29835662 +/-    0.0040
Time of Perihelion: 2458232.0073 +/-       4.1
Perihelion:          30.25107417 +/-    0.0040
Aphelion:            48.34563908 +/-    0.0055
Period (y)              246.3598 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.87538061 +/-    0.0003
Ecliptic Y          -24.81548979 +/-    0.0005
Ecliptic Z            4.70549291 +/-    0.0001
Ecliptic XDOT         0.00289639 +/-    0.0000
Ecliptic YDOT        -0.00186234 +/-    0.0000
Ecliptic ZDOT        -0.00030940 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.37644923 +/-    0.0004
Geocenter to KBO     29.58333881 +/-    0.0006
# Hcoef:  9.16

The following table shows the complete astrometric record for 13JZ64. 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 (13JZ64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.53553  15 47 07.577  -10 33 22.68  24.2r 13JZ64    568  C~1XRe      
2013 04  10.50462  15 47 03.174  -10 32 58.50  23.9r 13JZ64    568  C~1XRe      
2013 04  10.54490  15 47 02.987  -10 32 57.56  23.9r 13JZ64    568  C~1XRe      
2013 04  19.55776  15 46 18.400  -10 29 12.51  23.8r 13JZ64    568  C~1XRe      
2013 05  04.43329  15 44 53.421  -10 23 14.57  24.2r 13JZ64    568  C~1XRe      
2013 05  04.43834  15 44 53.387  -10 23 14.73  23.6r 13JZ64    568  C~1XRe      
2013 05  04.44379  15 44 53.369  -10 23 14.59  23.8r 13JZ64    568  C~1XRe      
2013 05  04.55613  15 44 52.663  -10 23 11.96        13JZ64    568  C~1XRe      
2013 05  07.43599  15 44 35.052  -10 22 06.88  23.5r 13JZ64    568  C~1XRe      
2013 05  07.48020  15 44 34.772  -10 22 05.89  23.7r 13JZ64    568  C~1XRe      
2013 05  07.52039  15 44 34.520  -10 22 04.94  23.8r 13JZ64    568  C~1XRe      
2013 05  09.48057  15 44 22.393  -10 21 21.74  23.9r 13JZ64    568  C~1XRe      
2013 05  10.48774  15 44 16.132  -10 20 59.94  23.6r 13JZ64    568  C~1XRe      
2014 02  28.60312  15 57 59.653  -11 31 03.07  24.0r 13JZ64    568  C~2LSW      
2014 04  04.50472  15 56 59.622  -11 19 42.64  23.9r 13JZ64    568  C~1XRe      
2014 04  04.52001  15 56 59.563  -11 19 42.28  23.7r 13JZ64    568  C~1XRe      
2014 04  04.56390  15 56 59.397  -11 19 41.46  23.5r 13JZ64    568  C~1XRe      
2014 04  04.57011  15 56 59.357  -11 19 41.38  23.5r 13JZ64    568  C~1XRe      
2014 04  30.40515  15 54 52.422  -11 09 39.38  23.4r 13JZ64    568  C~1XRe      
2014 04  30.45667  15 54 52.113  -11 09 38.29  23.7r 13JZ64    568  C~1XRe      
2014 04  30.50841  15 54 51.798  -11 09 37.10  23.5r 13JZ64    568  C~1XRe      
2014 05  05.45815  15 54 22.426  -11 07 47.39  23.7r 13JZ64    568  C~1XRe      
2014 05  06.39998  15 54 16.723  -11 07 27.07  24.0r 13JZ64    568  C~1XRe      
2014 05  06.46686  15 54 16.312  -11 07 25.63  23.5r 13JZ64    568  C~1XRe      
2014 05  06.54291  15 54 15.836  -11 07 24.01  23.9r 13JZ64    568  C~1XRe      
2014 05  22.48569  15 52 35.834  -11 02 11.11  24.2r 13JZ64    568  C~1XRe      
2014 05  22.49847  15 52 35.763  -11 02 11.05  23.9r 13JZ64    568  C~1XRe      
2014 05  24.47100  15 52 23.228  -11 01 37.28  23.7r 13JZ64    568  C~1XRe      
2014 06  02.45329  15 51 26.762  -10 59 21.43  23.8r 13JZ64    568  C~1XRe      
2014 07  01.36375  15 48 48.819  -10 55 58.82  24.0r 13JZ64    568  C~1XRe      
2014 07  18.33716  15 47 47.219  -10 57 12.78  24.1r 13JZ64    568  C~1XRe      
2015 04  20.62472  16 05 24.677  -11 57 00.02  23.9r 13JZ64    568  C~1XRe      
2017 02  02.65595  16 25 00.639  -13 36 32.61  24.8w 13JZ64    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     0.19       0.00    -0.01
  2   0.0027    -68.66    -0.02       9.25    -0.03
  3   0.0028    -71.56     0.02       9.56    -0.08
  4   0.0274   -762.61    -0.10      83.67     0.05
  5   0.0682  -2064.45    -0.04     154.51     0.22
  6   0.0682  -2064.90    -0.02     154.24    -0.05
  7   0.0682  -2065.19     0.21     154.32     0.01
  8   0.0685  -2075.93     0.03     154.56     0.02
  9   0.0764  -2343.78    -0.07     160.18    -0.03
 10   0.0765  -2348.02    -0.11     160.22    -0.03
 11   0.0766  -2351.86    -0.11     160.32     0.02
 12   0.0820  -2535.95    -0.07     162.57     0.01
 13   0.0847  -2630.89     0.10     163.23    -0.00
 14   0.8900  10129.64     0.01   -1302.40    -0.03
 15   0.9855   9120.41     0.06    -824.21     0.08
 16   0.9856   9119.48     0.07    -824.04     0.09
 17   0.9857   9116.92     0.18    -823.76    -0.08
 18   0.9857   9116.32    -0.03    -823.81    -0.19
 19   1.0565   7160.27    -0.11    -634.37    -0.01
 20   1.0566   7155.59    -0.14    -634.28    -0.09
 21   1.0567   7150.80    -0.25    -634.11    -0.09
 22   1.0703   6704.55     0.05    -619.74     0.09
 23   1.0729   6618.12     0.07    -617.94     0.03
 24   1.0730   6611.90     0.12    -617.83     0.05
 25   1.0733   6604.70     0.07    -617.75     0.01
 26   1.1169   5098.56    -0.26    -629.66     0.05
 27   1.1169   5097.53    -0.06    -629.83    -0.07
 28   1.1223   4909.93    -0.08    -636.80     0.03
 29   1.1469   4068.45     0.07    -684.51    -0.01
 30   1.2261   1753.92     0.24    -994.60     0.07
 31   1.2726    885.11     0.01   -1266.14     0.03
 32   2.0290  16876.05    -0.04   -1462.84    -0.16
 33   3.8196  35218.10     0.02   -3978.28     0.08

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.

13JZ64    quality flag:3

Type:           3:2E      3:2E      3:2E
Type:          6:4II     6:4II     6:4II

axisobj        39.161    39.172    39.151
ecceobj         0.228     0.229     0.228
incobj         10.130    10.130    10.130
qmin           28.539    28.573    28.550
qmax           50.744    50.819    50.810
amean          39.455    39.455    39.455
amin           39.096    39.094    39.110
amax           39.870    39.883    39.882
emean           0.241     0.241     0.241
emin            0.204     0.204     0.204
emax            0.275     0.275     0.276
imean           8.082     8.101     8.072
imin            5.637     5.685     5.610
imax           10.648    10.640    10.652
excite_mean     0.281     0.281     0.281
fracstop        1.000     1.000     1.000
cjmean          2.962     2.962     2.962

libcent 0       180.6     180.1     180.0
libamp  0        23.4      28.2      19.2
libcent 1       173.1     173.2     172.5
libamp  1       142.7     151.4     135.0
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        81.4      81.7      81.2
kozaiamp         54.3      53.4      54.8