Orbit Fit and Astrometric record for 13JF65

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: 13JF65    
# Created Tue Oct 24 01:38:16 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   3.07y
# First observation: 2013/04/09
#  Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000283   0.037709   0.000014  -0.003307   0.031243   0.000000
# Chi-squared of fit:    14.31 DOF:   54 RMS:  0.12
# Min/Max residuals:    -0.35    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.912549E-05  3.754448E-02 -1.274971E-06 -3.301265E-03  3.153348E-02  1.379535E-03
# Covariance matrix:
  1.6161E-13 -1.2702E-13 -2.7234E-15  6.1657E-15  7.7648E-14 -7.3021E-13
 -1.2702E-13  3.7318E-13  7.7470E-15 -2.8154E-14  1.1807E-13  3.4458E-12
 -2.7234E-15  7.7470E-15  1.0285E-13 -6.2526E-14  6.1107E-16  8.8009E-14
  6.1657E-15 -2.8154E-14 -6.2526E-14  7.3554E-14 -1.0789E-14 -3.2094E-13
  7.7648E-14  1.1807E-13  6.1107E-16 -1.0789E-14  2.8294E-13  1.3766E-12
 -7.3021E-13  3.4458E-12  8.8009E-14 -3.2094E-13  1.3766E-12  3.9287E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.904082 -120.126315    0.646044    0.092283   -0.761974  2456392.051928
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:            4.81823 +/-     0.043
Argument of Peri:      118.86540 +/-     0.063
Long of Asc Node:      112.61656 +/-     0.002
Inclination:             8.32292 +/-     0.000
Eccentricity:         0.17382836 +/-    0.0001
Semi-Major Axis:     39.26902860 +/-    0.0034
Time of Perihelion: 2455187.5195 +/-      10.9
Perihelion:          32.44295779 +/-    0.0039
Aphelion:            46.09509942 +/-    0.0048
Period (y)              246.0840 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.74407683 +/-    0.0003
Ecliptic Y          -27.56714684 +/-    0.0005
Ecliptic Z            3.81205861 +/-    0.0001
Ecliptic XDOT         0.00273615 +/-    0.0000
Ecliptic YDOT        -0.00176839 +/-    0.0000
Ecliptic ZDOT        -0.00027001 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.47835409 +/-    0.0004
Geocenter to KBO     31.71232955 +/-    0.0005
# Hcoef:  9.21

The following table shows the complete astrometric record for 13JF65. 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 (13JF65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.55115  15 56 46.247  -13 22 17.14  24.1r 13JF65    568  C~1XRf      
2013 04  10.52025  15 56 42.207  -13 21 57.93  24.3r 13JF65    568  C~1XRf      
2013 04  10.56094  15 56 42.058  -13 21 57.10  24.4r 13JF65    568  C~1XRf      
2013 04  19.57379  15 56 00.791  -13 18 55.65        13JF65    568  C~1XRf      
2013 05  07.45193  15 54 23.717  -13 12 56.20  24.3r 13JF65    568  C~1XRf      
2013 05  07.49610  15 54 23.451  -13 12 55.30  23.9r 13JF65    568  C~1XRf      
2013 05  07.53630  15 54 23.217  -13 12 54.59  24.1r 13JF65    568  C~1XRf      
2013 05  09.49657  15 54 11.723  -13 12 16.70  24.1r 13JF65    568  C~1XRf      
2013 05  10.50367  15 54 05.763  -13 11 57.54  24.6r 13JF65    568  C~1XRf      
2013 06  04.38499  15 51 36.679  -13 05 07.43  24.4r 13JF65    568  C~1XRf      
2013 06  06.38838  15 51 25.080  -13 04 41.58  24.3r 13JF65    568  C~1XRf      
2013 07  03.37823  15 49 09.187  -13 01 15.87  24.3r 13JF65    568  C~1XRf      
2014 03  06.58616  16 06 28.536  -14 07 59.11  24.4r 13JF65    568  C~1XRf      
2014 03  06.60128  16 06 28.524  -14 07 58.95  24.5r 13JF65    568  C~1XRf      
2014 03  07.57593  16 06 28.377  -14 07 47.98  24.6r 13JF65    568  C~1XRf      
2014 05  01.40606  16 03 32.204  -13 52 26.92  23.9r 13JF65    568  C~1XRf      
2014 05  01.45743  16 03 31.905  -13 52 26.23        13JF65    568  C~1XRf      
2014 05  04.40376  16 03 15.434  -13 51 30.73  24.1r 13JF65    568  C~1XRf      
2014 05  04.45442  16 03 15.173  -13 51 29.77  24.1r 13JF65    568  C~1XRf      
2014 05  04.50508  16 03 14.861  -13 51 28.56        13JF65    568  C~1XRf      
2014 05  22.53356  16 01 28.031  -13 46 12.16  23.5r 13JF65    568  C~1XRf      
2014 05  22.55345  16 01 27.893  -13 46 12.05  24.2r 13JF65    568  C~1XRf      
2014 05  25.49675  16 01 10.014  -13 45 25.74  24.0r 13JF65    568  C~1XRf      
2014 06  02.47294  16 00 21.857  -13 43 30.73  24.3r 13JF65    568  C~1XRf      
2014 07  01.38714  15 57 47.175  -13 39 19.99  23.8r 13JF65    568  C~1XRf      
2014 07  26.28881  15 56 24.662  -13 40 05.00  24.1r 13JF65    568  C~1XRf      
2015 03  22.57427  16 14 39.613  -14 39 53.29        13JF65    568  C~1XRf      
2015 04  18.56543  16 13 12.216  -14 32 34.97  24.0r 13JF65    568  C~1XRf      
2016 05  06.53851  16 20 12.289  -15 02 09.91  24.0r 13JF65    568  C~2LSW      
2016 05  06.60444  16 20 11.910  -15 02 08.84  24.2r 13JF65    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    -0.06       0.00    -0.08
  2   0.0027    -61.65    -0.14       6.70    -0.06
  3   0.0028    -63.94     0.24       7.07     0.04
  4   0.0274   -690.69     0.26      60.79    -0.04
  5   0.0764  -2151.71     0.05     119.46     0.08
  6   0.0765  -2155.70    -0.01     119.54     0.10
  7   0.0766  -2159.19     0.08     119.52     0.05
  8   0.0820  -2331.27     0.10     121.74     0.10
  9   0.0847  -2420.40    -0.01     122.39    -0.01
 10   0.1529  -4636.37    -0.35      68.21    -0.05
 11   0.1583  -4807.58    -0.04      57.83    -0.01
 12   0.2322  -6793.50    -0.03    -161.27     0.14
 13   0.9063   8866.68     0.07    -987.44     0.09
 14   0.9064   8866.47    -0.06    -987.31     0.06
 15   0.9090   8862.23    -0.15    -976.96     0.16
 16   1.0592   6163.34     0.10    -578.28     0.04
 17   1.0593   6158.93     0.01    -578.47    -0.25
 18   1.0674   5912.61    -0.23    -571.69    -0.19
 19   1.0675   5908.69     0.20    -571.50    -0.08
 20   1.0676   5903.99    -0.13    -571.22     0.12
 21   1.1170   4315.06     0.13    -571.73     0.14
 22   1.1170   4313.07    -0.04    -572.02    -0.11
 23   1.1251   4048.48     0.03    -578.92    -0.08
 24   1.1469   3337.78    -0.23    -607.43    -0.19
 25   1.2261   1079.20     0.10    -819.30    -0.10
 26   1.2943    -88.76     0.11   -1109.76     0.03
 27   1.9494  16264.02    -0.11   -1505.78    -0.08
 28   2.0233  14928.07     0.08   -1312.13     0.01
 29   3.0746  21292.80     0.03   -1937.67     0.09
 30   3.0748  21287.15     0.01   -1937.60     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.

13JF65    quality flag:3

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

axisobj        39.134    39.145    39.123
ecceobj         0.171     0.171     0.171
incobj          8.317     8.317     8.317
qmin           31.467    31.467    31.474
qmax           47.816    47.802    47.879
amean          39.456    39.456    39.456
amin           39.134    39.138    39.123
amax           39.832    39.816    39.854
emean           0.183     0.183     0.183
emin            0.165     0.164     0.165
emax            0.201     0.201     0.201
imean           6.535     6.534     6.536
imin            5.917     5.916     5.918
imax            7.300     7.300     7.305
excite_mean     0.215     0.215     0.215
fracstop        1.000     1.000     1.000
cjmean          2.999     2.999     2.999

libcent 0       179.2     179.9     179.6
libamp  0        17.1      14.4      21.7
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       175.6     175.7     175.4
kozaiamp        180.0     180.0     180.0