Orbit Fit and Astrometric record for 13JE65

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: 13JE65    
# Created Mon Dec 11 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:   3.07y
# First observation: 2013/04/09
#  Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000185   0.038006  -0.000002  -0.003147   0.031891   0.000000
# Chi-squared of fit:    11.11 DOF:   48 RMS:  0.11
# Min/Max residuals:    -0.28    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.873376E-05  3.844652E-02 -1.222958E-06 -3.196462E-03  3.237782E-02  8.760137E-03
# Covariance matrix:
  1.9515E-13 -6.8039E-14 -1.6656E-15  2.9040E-16  1.2925E-13  7.1032E-14
 -6.8039E-14  4.1017E-13  5.0539E-15 -2.8170E-14  2.1694E-13  4.2147E-12
 -1.6656E-15  5.0539E-15  1.1724E-13 -7.7772E-14  6.2197E-16  6.9021E-14
  2.9040E-16 -2.8170E-14 -7.7772E-14  9.8462E-14 -1.7677E-14 -3.7858E-13
  1.2925E-13  2.1694E-13  6.2197E-16 -1.7677E-14  3.4388E-13  2.8257E-12
  7.1032E-14  4.2147E-12  6.9021E-14 -3.7858E-13  2.8257E-12  5.6563E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.805659 -120.380139    0.642637    0.091312   -0.764965  2456392.051928
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:           34.38717 +/-     0.010
Argument of Peri:       65.72038 +/-     0.025
Long of Asc Node:      113.78870 +/-     0.003
Inclination:             8.05481 +/-     0.000
Eccentricity:         0.27785535 +/-    0.0002
Semi-Major Axis:     39.25806948 +/-    0.0051
Time of Perihelion: 2447808.5535 +/-       1.9
Perihelion:          28.35000465 +/-    0.0083
Aphelion:            50.16613431 +/-    0.0099
Period (y)              245.9810 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.45257432 +/-    0.0003
Ecliptic Y          -26.79406885 +/-    0.0005
Ecliptic Z            3.65997530 +/-    0.0001
Ecliptic XDOT         0.00241013 +/-    0.0000
Ecliptic YDOT        -0.00230597 +/-    0.0000
Ecliptic ZDOT        -0.00018046 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.65445856 +/-    0.0004
Geocenter to KBO     30.88534044 +/-    0.0006
# Hcoef:  9.32

The following table shows the complete astrometric record for 13JE65. 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 (13JE65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.55115  15 55 40.405  -13 24 56.96  24.3r 13JE65    568  C~1XRf      
2013 04  10.56094  15 55 36.052  -13 24 36.06  24.4r 13JE65    568  C~1XRf      
2013 04  19.57379  15 54 53.488  -13 21 28.64  24.2r 13JE65    568  C~1XRf      
2013 05  07.45193  15 53 13.602  -13 15 16.90  24.2r 13JE65    568  C~1XRf      
2013 05  07.49610  15 53 13.327  -13 15 16.07  24.4r 13JE65    568  C~1XRf      
2013 05  07.53630  15 53 13.083  -13 15 15.21  24.0r 13JE65    568  C~1XRf      
2013 05  09.49657  15 53 01.276  -13 14 36.09  23.9r 13JE65    568  C~1XRf      
2013 05  10.50367  15 52 55.157  -13 14 15.86  24.8r 13JE65    568  C~1XRf      
2013 06  04.38499  15 50 22.342  -13 07 10.16        13JE65    568  C~1XRf      
2013 06  06.38838  15 50 10.455  -13 06 43.45        13JE65    568  C~1XRf      
2013 07  02.32839  15 47 56.236  -13 03 09.97  24.6r 13JE65    568  C~1XRf      
2013 07  03.36611  15 47 51.884  -13 03 07.16  24.1r 13JE65    568  C~1XRf      
2014 03  06.58616  16 05 34.257  -14 11 04.29  24.3r 13JE65    568  C~1XRf      
2014 05  04.40376  16 02 15.459  -13 54 08.90  24.0r 13JE65    568  C~1XRf      
2014 05  04.45442  16 02 15.165  -13 54 07.66  24.2r 13JE65    568  C~1XRf      
2014 05  04.50508  16 02 14.849  -13 54 06.72  24.5r 13JE65    568  C~1XRf      
2014 05  25.49675  16 00 07.406  -13 47 52.32  24.3r 13JE65    568  C~1XRf      
2014 06  02.47294  15 59 18.343  -13 45 53.37  24.5r 13JE65    568  C~1XRf      
2014 06  21.43206  15 57 29.867  -13 42 27.18  24.6r 13JE65    568  C~1XRf      
2014 06  22.40477  15 57 24.790  -13 42 20.03  23.8r 13JE65    568  C~1XRf      
2014 06  30.42685  15 56 45.503  -13 41 34.79  24.7r 13JE65    568  C~1XRf      
2014 07  01.38714  15 56 41.142  -13 41 30.85  24.4r 13JE65    568  C~1XRf      
2014 07  18.36111  15 55 37.515  -13 41 29.07  23.5r 13JE65    568  C~1XRf      
2014 07  26.28881  15 55 17.802  -13 42 10.89  24.5r 13JE65    568  C~1XRf      
2015 03  22.57427  16 13 45.475  -14 42 29.74  24.3r 13JE65    568  C~1XRf      
2015 04  18.56543  16 12 15.795  -14 35 01.26  24.2r 13JE65    568  C~1XRf      
2016 05  06.60444  16 19 08.425  -15 03 38.35  22.6r 13JE65    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     0.01       0.00    -0.07
  2   0.0028    -66.46    -0.10       7.31     0.17
  3   0.0274   -712.94     0.07      61.94     0.05
  4   0.0764  -2216.55     0.04     121.66     0.06
  5   0.0765  -2220.65    -0.02     121.63    -0.02
  6   0.0766  -2224.31    -0.01     121.72     0.03
  7   0.0820  -2401.10     0.08     123.89    -0.03
  8   0.0847  -2492.71    -0.06     124.96     0.24
  9   0.1529  -4764.88     0.01      70.70     0.23
 10   0.1583  -4940.34     0.07      59.97    -0.02
 11   0.2294  -6903.42    -0.09    -149.82    -0.15
 12   0.2322  -6966.20    -0.01    -160.71    -0.09
 13   0.9063   9036.87    -0.08    -965.16    -0.02
 14   1.0674   5995.92     0.08    -543.56    -0.15
 15   1.0675   5991.48     0.09    -543.20     0.13
 16   1.0676   5986.78    -0.15    -543.20     0.05
 17   1.1251   4092.19     0.24    -549.96     0.05
 18   1.1469   3367.92     0.06    -578.39    -0.15
 19   1.1989   1778.24     0.03    -699.08    -0.08
 20   1.2015   1704.35    -0.10    -707.25    -0.16
 21   1.2235   1134.70     0.02    -780.57    -0.28
 22   1.2261   1071.69     0.11    -789.80    -0.01
 23   1.2726    163.98    -0.17    -979.38     0.06
 24   1.2943   -108.43    -0.05   -1079.77    -0.06
 25   1.9494  16430.62    -0.12   -1444.90    -0.14
 26   2.0233  15059.83    -0.03   -1249.33     0.03
 27   3.0748  21307.19     0.07   -1828.58     0.30

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.

13JE65    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.091    39.107    39.075
ecceobj         0.274     0.275     0.274
incobj          8.050     8.050     8.050
qmin           27.815    27.793    27.832
qmax           51.520    51.615    51.402
amean          39.454    39.455    39.454
amin           39.075    39.106    39.075
amax           39.895    39.891    39.914
emean           0.257     0.259     0.255
emin            0.194     0.195     0.193
emax            0.294     0.295     0.293
imean           9.073     8.868     9.429
imin            6.127     6.126     6.131
imax           13.000    12.998    13.077
excite_mean     0.304     0.304     0.306
fracstop        1.000     1.000     1.000
cjmean          2.946     2.946     2.945

libcent 0       180.8     180.7     180.1
libamp  0        39.1      34.1      45.8
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       106.4      99.9     112.1
kozaiamp         72.5      75.3      67.8