Orbit Fit and Astrometric record for 13JU63

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: 13JU63    
# Created Sun Apr 21 01:09:29 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   45 observations of   45
# Arc:   5.01y
# First observation: 2012/05/14
#  Last observation: 2017/05/19
# Chi-squared of fit:    48.40 DOF:   84 RMS:  0.18
# Min/Max residuals:    -0.63    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.687219E-05  3.166542E-02 -6.238114E-07  1.402889E-03  2.773969E-02 -3.486465E-03
# Covariance matrix:
  1.4398E-13 -9.4780E-14  1.4512E-15 -2.6351E-15 -2.7397E-14 -4.3511E-13
 -9.4780E-14  1.2587E-13 -2.7372E-15  4.8821E-15  6.1219E-14  8.1177E-13
  1.4512E-15 -2.7372E-15  1.1213E-13 -3.5972E-14 -2.1726E-15 -2.0531E-14
 -2.6351E-15  4.8821E-15 -3.5972E-14  1.6641E-14  2.5505E-15  3.6147E-14
 -2.7397E-14  6.1219E-14 -2.1726E-15  2.5505E-15  1.9164E-13  5.1014E-13
 -4.3511E-13  8.1177E-13 -2.0531E-14  3.6147E-14  5.1014E-13  6.0411E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.562615 -135.504444   -0.163384   -0.062210   -0.998666  2456061.907656
# Heliocentric elements and errors
Epoch:              2456062.5000  =  2012/05/15
Mean Anomaly:          342.43814 +/-     0.011
Argument of Peri:      336.62504 +/-     0.019
Long of Asc Node:      278.16813 +/-     0.002
Inclination:             4.31426 +/-     0.000
Eccentricity:         0.25627816 +/-    0.0001
Semi-Major Axis:     48.43869457 +/-    0.0044
Time of Perihelion: 2462069.4635 +/-      16.4
Perihelion:          36.02491521 +/-    0.0047
Aphelion:            60.85247393 +/-    0.0065
Period (y)              337.1296 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.26073359 +/-    0.0004
Ecliptic Y          -26.03293676 +/-    0.0004
Ecliptic Z           -2.24006236 +/-    0.0000
Ecliptic XDOT         0.00242415 +/-    0.0000
Ecliptic YDOT        -0.00199115 +/-    0.0000
Ecliptic ZDOT         0.00015968 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.04541617 +/-    0.0004
Geocenter to KBO     36.04953817 +/-    0.0006
# Hcoef:  7.29

The following table shows the complete astrometric record for 13JU63. 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 (13JU63) followed by the observatory code and reference code for the source of the astrometry.

2012 05  14.40689  14 43 40.090  -19 35 17.32  23.1G 13JU63    F51  C~2r7P      
2012 05  19.38514  14 43 14.185  -19 33 11.69  22.8G 13JU63    F51  C~2r7P      
2012 05  19.40061  14 43 14.126  -19 33 11.46  23.2G 13JU63    F51  C~2r7P      
2012 05  19.41608  14 43 14.030  -19 33 10.90  22.6G 13JU63    F51  C~2r7P      
2012 05  19.43155  14 43 13.965  -19 33 10.61  22.4G 13JU63    F51  C~2r7P      
2012 05  20.37083  14 43 09.162  -19 32 46.71  22.6G 13JU63    F51  C~2r7P      
2012 05  20.38542  14 43 09.085  -19 32 46.47  23.0G 13JU63    F51  C~2r7P      
2012 05  20.40002  14 43 09.009  -19 32 46.29  23.1G 13JU63    F51  C~2r7P      
2012 05  20.41462  14 43 08.936  -19 32 45.81  22.5G 13JU63    F51  C~2r7P      
2013 05  08.08899  14 51 44.377  -20 05 35.87  22.3r 13JU63    807  C~143e      
2013 05  08.17722  14 51 43.870  -20 05 33.88        13JU63    807  C~143e      
2013 05  08.28150  14 51 43.308  -20 05 31.08        13JU63    807  C~143e      
2013 05  09.12531  14 51 38.731  -20 05 10.61        13JU63    304  C~143e      
2014 04  29.42739  15 00 07.875  -20 35 31.15  22.9G 13JU63    F51  C~2r7P      
2014 05  01.32346  14 59 57.646  -20 34 48.90        13JU63    304  C~143e      
2014 05  02.35350  14 59 52.073  -20 34 25.75  22.2r 13JU63    304  C~143e      
2014 05  02.38489  14 59 51.907  -20 34 25.15        13JU63    304  C~143e      
2014 05  07.41426  14 59 24.574  -20 32 30.45  22.8G 13JU63    F51  C~2r7P      
2014 05  23.34239  14 57 58.998  -20 26 11.70  22.7G 13JU63    F51  C~2r7P      
2014 06  04.30393  14 56 59.396  -20 21 28.23  22.7G 13JU63    F51  C~2r7P      
2014 06  30.27751  14 55 19.516  -20 12 30.59  23.2G 13JU63    F51  C~2r7P      
2014 06  30.30126  14 55 19.406  -20 12 29.97  22.7G 13JU63    F51  C~2r7P      
2014 06  30.31315  14 55 19.353  -20 12 29.74        13JU63    F51  C~2r7P      
2015 01  21.66428  15 10 35.644  -21 05 58.60  23.0G 13JU63    F51  C~2r7P      
2015 01  23.65447  15 10 42.275  -21 06 33.19  23.1G 13JU63    F51  C~2r7P      
2015 02  23.65219  15 11 27.656  -21 11 55.65  23.2G 13JU63    F51  C~2r7P      
2015 02  24.63590  15 11 27.262  -21 11 58.80  22.9G 13JU63    F51  C~2r7P      
2015 03  30.56709  15 10 11.631  -21 09 20.09  23.1G 13JU63    F51  C~2r7P      
2015 05  24.42830  15 05 34.510  -20 51 32.89  22.8G 13JU63    F51  C~2r7P      
2015 05  25.39434  15 05 29.416  -20 51 10.43  22.6G 13JU63    F51  C~2r7P      
2015 06  08.42072  15 04 19.660  -20 45 48.58  22.3G 13JU63    F51  C~2r7P      
2015 06  18.33989  15 03 36.718  -20 42 15.13  22.9G 13JU63    F51  C~2r7P      
2015 06  19.28987  15 03 32.959  -20 41 55.58  23.2G 13JU63    F51  C~2r7P      
2015 06  19.30175  15 03 32.919  -20 41 55.33  22.9G 13JU63    F51  C~2r7P      
2015 06  19.31367  15 03 32.866  -20 41 54.98  22.4G 13JU63    F51  C~2r7P      
2015 06  19.32555  15 03 32.800  -20 41 54.69  22.4G 13JU63    F51  C~2r7P      
2015 06  23.31528  15 03 17.778  -20 40 35.28  22.5G 13JU63    F51  C~2r7P      
2016 03  07.59900  15 18 55.259  -21 35 18.37  22.9G 13JU63    F51  C~2r7P      
2016 03  17.56459  15 18 34.636  -21 34 41.38  23.5G 13JU63    F51  C~2r7P      
2016 04  01.59152  15 17 45.538  -21 32 28.40  22.0G 13JU63    F51  C~2r7P      
2016 05  07.45920  15 14 49.112  -21 22 07.52  22.7G 13JU63    F51  C~2r7P      
2016 05  29.22878  15 12 50.835  -21 14 02.58  21.9R 13JU63    G37  C~2bms      
2016 05  29.30285  15 12 50.429  -21 14 00.96        13JU63    G37  C~2bms      
2017 04  26.52350  15 23 41.506  -21 48 53.54  23.3G 13JU63    F51  C~2r7P      
2017 05  19.42482  15 21 35.955  -21 41 09.89  23.2G 13JU63    F51  C~2r7P      

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     0.34       0.00     0.21
  2   0.0136      0.00    -0.17       0.00     0.08
  3   0.0137      0.00     0.15       0.00    -0.08
  4   0.0137      0.00    -0.07       0.00     0.08
  5   0.0138      0.00     0.16       0.00    -0.02
  6   0.0163      0.00     0.05       0.00     0.19
  7   0.0164      0.00     0.04       0.00     0.06
  8   0.0164      0.00     0.03       0.00    -0.13
  9   0.0164      0.00     0.08       0.00    -0.02
 10   0.9820      0.00    -0.02       0.00    -0.12
 11   0.9823      0.00    -0.36       0.00    -0.25
 12   0.9825      0.00    -0.19       0.00     0.02
 13   0.9849      0.00    -0.63       0.00     0.09
 14   1.9576      0.00    -0.06       0.00    -0.14
 15   1.9628      0.00     0.03       0.00    -0.06
 16   1.9656      0.00     0.09       0.00     0.03
 17   1.9657      0.00     0.17       0.00    -0.09
 18   1.9795      0.00     0.23       0.00    -0.07
 19   2.0231      0.00     0.01       0.00    -0.10
 20   2.0558      0.00     0.31       0.00    -0.20
 21   2.1270      0.00     0.53       0.00    -0.24
 22   2.1270      0.00    -0.07       0.00    -0.03
 23   2.1271      0.00    -0.35       0.00    -0.01
 24   2.6893      0.00     0.05       0.00    -0.03
 25   2.6947      0.00     0.03       0.00     0.02
 26   2.7796      0.00     0.17       0.00     0.02
 27   2.7823      0.00    -0.08       0.00     0.01
 28   2.8752      0.00     0.19       0.00     0.24
 29   3.0254      0.00    -0.08       0.00     0.11
 30   3.0280      0.00    -0.22       0.00     0.01
 31   3.0664      0.00    -0.26       0.00    -0.06
 32   3.0936      0.00    -0.08       0.00    -0.02
 33   3.0962      0.00    -0.08       0.00     0.06
 34   3.0962      0.00     0.04       0.00     0.07
 35   3.0963      0.00    -0.03       0.00     0.17
 36   3.0963      0.00    -0.31       0.00     0.22
 37   3.1072      0.00     0.11       0.00     0.11
 38   3.8144      0.00     0.15       0.00     0.06
 39   3.8416      0.00    -0.28       0.00     0.27
 40   3.8828      0.00    -0.13       0.00    -0.37
 41   3.9810      0.00     0.14       0.00     0.25
 42   4.0406      0.00     0.46       0.00    -0.10
 43   4.0408      0.00     0.24       0.00    -0.15
 44   4.9504      0.00    -0.08       0.00    -0.02
 45   5.0131      0.00    -0.21       0.00    -0.07

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.

13JU63    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        48.288    48.288    48.288
ecceobj         0.255     0.255     0.255
incobj          4.312     4.312     4.312
qmin           35.298    35.261    35.312
qmax           62.725    62.684    62.665
amean          48.692    48.698    48.701
amin           48.141    48.156    48.154
amax           49.268    49.283    49.273
emean           0.257     0.257     0.257
emin            0.239     0.239     0.241
emax            0.274     0.273     0.274
imean           6.349     6.349     6.345
imin            5.307     5.309     5.309
imax            7.574     7.564     7.554
excite_mean     0.280     0.280     0.280
fracstop        1.000     1.000     1.000
cjmean          3.061     3.061     3.061

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       176.1     176.1     176.0
kozaiamp        180.0     179.9     180.0