Orbit Fit and Astrometric record for 13JF64

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: 13JF64    
# Created Tue Oct 17 01:38:15 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   30
# Arc:   3.07y
# First observation: 2013/04/10
#  Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
   0.000041   0.045937  -0.000005  -0.004779   0.033849   0.000000
# Chi-squared of fit:    12.44 DOF:   52 RMS:  0.12
# Min/Max residuals:    -0.25    0.40
# Exact a, adot, b, bdot, g, gdot:
  2.128470E-05  4.583711E-02 -2.546604E-06 -4.794026E-03  3.365306E-02  1.642634E-03
# Covariance matrix:
  1.6978E-13 -7.1755E-14 -2.5008E-15  3.0840E-15  1.0986E-13 -1.7762E-13
 -7.1755E-14  3.9913E-13  8.7278E-15 -3.7705E-14  2.1774E-13  3.1218E-12
 -2.5008E-15  8.7278E-15  1.0639E-13 -6.1052E-14  1.6078E-15  8.3827E-14
  3.0840E-15 -3.7705E-14 -6.1052E-14  6.8998E-14 -2.1281E-14 -3.5385E-13
  1.0986E-13  2.1774E-13  1.6078E-15 -2.1281E-14  3.5996E-13  1.9063E-12
 -1.7762E-13  3.1218E-12  8.3827E-14 -3.5385E-13  1.9063E-12  2.9214E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.761564 -121.880952    0.609626    0.093877   -0.791612  2456392.996578
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:            1.06575 +/-     0.007
Argument of Peri:      128.26325 +/-     0.022
Long of Asc Node:      105.22853 +/-     0.002
Inclination:             8.79331 +/-     0.000
Eccentricity:         0.44743313 +/-    0.0001
Semi-Major Axis:     55.19006274 +/-    0.0070
Time of Perihelion: 2455947.1556 +/-       3.1
Perihelion:          30.49620044 +/-    0.0052
Aphelion:            79.88392504 +/-    0.0107
Period (y)              410.0148 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.52247805 +/-    0.0003
Ecliptic Y          -25.40962508 +/-    0.0004
Ecliptic Z            3.49853597 +/-    0.0001
Ecliptic XDOT         0.00306590 +/-    0.0000
Ecliptic YDOT        -0.00212088 +/-    0.0000
Ecliptic ZDOT        -0.00037143 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.51034384 +/-    0.0004
Geocenter to KBO     29.71497710 +/-    0.0005
# Hcoef:  9.38

The following table shows the complete astrometric record for 13JF64. 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 (13JF64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.49580  15 49 38.903  -13 08 38.52  24.1r 13JF64    568  C~1XRc      
2013 04  10.53608  15 49 38.740  -13 08 37.98  24.1r 13JF64    568  C~1XRc      
2013 04  19.54976  15 48 55.432  -13 05 30.53  24.1r 13JF64    568  C~1XRc      
2013 05  04.42521  15 47 32.333  -13 00 20.84  24.1r 13JF64    568  C~1XRc      
2013 05  07.42802  15 47 14.290  -12 59 20.13  24.2r 13JF64    568  C~1XRc      
2013 05  07.47225  15 47 14.004  -12 59 19.25  23.3r 13JF64    568  C~1XRc      
2013 05  07.51247  15 47 13.761  -12 59 18.42  24.0r 13JF64    568  C~1XRc      
2013 05  09.47229  15 47 01.850  -12 58 39.45  24.3r 13JF64    568  C~1XRc      
2013 05  10.47981  15 46 55.680  -12 58 19.68  24.0r 13JF64    568  C~1XRc      
2013 06  01.38796  15 44 40.340  -12 52 04.27        13JF64    568  C~1XRc      
2013 06  06.36358  15 44 10.727  -12 50 58.15  24.2r 13JF64    568  C~1XRc      
2013 07  03.35437  15 41 54.982  -12 47 51.01  24.2r 13JF64    568  C~1XRc      
2014 04  30.43644  15 58 18.022  -13 51 32.36        13JF64    568  C~1XRc      
2014 04  30.48774  15 58 17.691  -13 51 30.98  24.0r 13JF64    568  C~1XRc      
2014 04  30.53949  15 58 17.414  -13 51 29.79        13JF64    568  C~1XRc      
2014 05  05.50559  15 57 48.561  -13 49 55.29  24.0r 13JF64    568  C~1XRc      
2014 05  06.44715  15 57 42.980  -13 49 37.25  24.0r 13JF64    568  C~1XRc      
2014 05  06.49809  15 57 42.674  -13 49 36.43  24.1r 13JF64    568  C~1XRc      
2014 05  06.57421  15 57 42.217  -13 49 34.96        13JF64    568  C~1XRc      
2014 05  22.54166  15 56 03.838  -13 44 53.48  24.1r 13JF64    568  C~1XRc      
2014 05  25.50065  15 55 45.321  -13 44 06.47  24.0r 13JF64    568  C~1XRc      
2014 06  02.47694  15 54 55.872  -13 42 11.31  23.9r 13JF64    568  C~1XRc      
2014 07  01.38325  15 52 19.418  -13 38 13.61  23.7r 13JF64    568  C~2LSW      
2014 07  18.35698  15 51 18.201  -13 38 35.96  24.4r 13JF64    568  C~1XRc      
2014 07  26.28482  15 51 00.182  -13 39 31.37  24.1r 13JF64    568  C~1XRc      
2015 03  22.57427  16 11 13.821  -14 50 09.66  24.3r 13JF64    568  C~1XRc      
2015 04  18.56543  16 09 43.880  -14 43 02.09  24.0r 13JF64    568  C~2LSW      
2015 08  11.31763  16 00 54.215  -14 30 47.90  24.3r 13JF64    568  C~2LSW      
2016 05  06.53851  16 18 29.725  -15 23 41.23  24.2r 13JF64    568  C~2LSW      
2016 05  06.60444  16 18 29.328  -15 23 40.25  24.0r 13JF64    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     0.05       0.00     0.06
  2   0.0001     -2.44     0.40       0.01    -0.15
  3   0.0248   -660.67    -0.13      46.32    -0.06
  4   0.0655  -1913.29     0.13      84.99    -0.13
  5   0.0737  -2183.92    -0.07      86.78    -0.06
  6   0.0739  -2188.20    -0.25      86.72    -0.10
  7   0.0740  -2191.84    -0.18      86.76    -0.06
  8   0.0793  -2370.27    -0.09      86.81     0.05
  9   0.0821  -2462.61    -0.10      86.41     0.05
 10   0.1421  -4476.05     0.18      18.47     0.18
 11   0.1557  -4913.25     0.09     -12.64     0.16
 12   0.2296  -6892.26    -0.04    -271.17     0.08
 13   1.0539   7948.55 (   0.48)   -914.90 (  -0.44)
 14   1.0541   7943.54    -0.08    -914.55    -0.15
 15   1.0542   7939.34     0.21    -914.22     0.11
 16   1.0678   7508.05    -0.02    -908.88    -0.20
 17   1.0704   7424.68    -0.07    -908.11     0.10
 18   1.0705   7420.14     0.01    -908.23    -0.02
 19   1.0707   7413.32     0.07    -908.17     0.02
 20   1.1144   5951.41     0.02    -931.69    -0.14
 21   1.1225   5677.52     0.08    -942.24     0.03
 22   1.1444   4948.35    -0.10    -981.01     0.01
 23   1.2235   2668.59     0.06   -1231.64     0.09
 24   1.2700   1801.49    -0.08   -1444.07     0.02
 25   1.2917   1556.79    -0.01   -1554.47     0.16
 26   1.9468  19755.24    -0.14   -2107.89     0.05
 27   2.0207  18380.75    -0.02   -1940.54     0.09
 28   2.3349  10661.99     0.04   -2755.42    -0.13
 29   3.0720  26418.26     0.07   -2897.03     0.03
 30   3.0722  26412.34    -0.02   -2897.13    -0.06

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.

13JF64    quality flag:3

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

axisobj        54.889    54.910    54.867
ecceobj         0.445     0.445     0.444
incobj          8.788     8.788     8.788
qmin           29.873    29.877    29.868
qmax           82.406    82.502    82.444
amean          55.461    55.461    55.461
amin           54.751    54.777    54.786
amax           56.430    56.425    56.426
emean           0.450     0.451     0.451
emin            0.441     0.441     0.441
emax            0.461     0.462     0.462
imean           7.264     7.211     7.260
imin            7.153     7.099     7.148
imax            7.388     7.324     7.386
excite_mean     0.468     0.468     0.468
fracstop        1.000     1.000     1.000
cjmean          2.947     2.947     2.947

libcent 0       180.0     179.4     178.5
libamp  0        71.3      69.4      64.8
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       208.2     205.2     210.8
kozaiamp        179.9     180.0     180.0