Orbit Fit and Astrometric record for 13GS136

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: 13GS136   
# Created Tue Oct 24 01:38:13 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   4.15y
# First observation: 2013/04/04
#  Last observation: 2017/05/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000403   0.035454   0.000057  -0.004262   0.028115   0.000000
# Chi-squared of fit:     2.43 DOF:   28 RMS:  0.07
# Min/Max residuals:    -0.18    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.914501E-05  3.499930E-02 -2.427330E-06 -4.172839E-03  2.891628E-02 -4.853552E-03
# Covariance matrix:
  2.8503E-13 -3.4361E-13 -1.8083E-14  3.8290E-14 -6.3794E-14 -2.1340E-12
 -3.4361E-13  6.8209E-13  4.0291E-14 -8.5171E-14  1.6912E-13  4.7476E-12
 -1.8083E-14  4.0291E-14  1.6316E-13 -7.0431E-14  5.8826E-15  3.1382E-13
  3.8290E-14 -8.5171E-14 -7.0431E-14  6.8263E-14 -1.0055E-14 -6.6726E-13
 -6.3794E-14  1.6912E-13  5.8826E-15 -1.0055E-14  4.8124E-13  5.7368E-13
 -2.1340E-12  4.7476E-12  3.1382E-13 -6.6726E-13  5.7368E-13  3.7173E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.614777 -147.902780    0.298857    0.026972   -0.955588  2456386.914608
# Heliocentric elements and errors
Epoch:              2456380.5000  =  2013/03/29
Mean Anomaly:          347.23953 +/-     0.013
Argument of Peri:      197.14729 +/-     0.034
Long of Asc Node:       44.55013 +/-     0.001
Inclination:             6.98547 +/-     0.000
Eccentricity:         0.38347182 +/-    0.0001
Semi-Major Axis:     55.47601182 +/-    0.0090
Time of Perihelion: 2461730.0887 +/-       5.4
Perihelion:          34.20252475 +/-    0.0081
Aphelion:            76.74949889 +/-    0.0138
Period (y)              413.2055 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.25252187 +/-    0.0007
Ecliptic Y          -18.62123172 +/-    0.0004
Ecliptic Z            0.97445522 +/-    0.0000
Ecliptic XDOT         0.00213423 +/-    0.0000
Ecliptic YDOT        -0.00256870 +/-    0.0000
Ecliptic ZDOT        -0.00040774 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.53751417 +/-    0.0006
Geocenter to KBO     34.58259122 +/-    0.0008
# Hcoef:  8.57

The following table shows the complete astrometric record for 13GS136. 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 (13GS136) followed by the observatory code and reference code for the source of the astrometry.

2013 04  04.41383  14 01 56.582  -10 41 09.03  24.1r 13GS136   568  C~1XRV      
2013 04  04.45396  14 01 56.382  -10 41 08.07  23.8r 13GS136   568  C~1XRV      
2013 04  04.49439  14 01 56.174  -10 41 06.95        13GS136   568  C~1XRV      
2013 04  06.58684  14 01 45.663  -10 40 13.90  24.3r 13GS136   568  C~1XRV      
2013 04  08.38751  14 01 36.533  -10 39 27.64  24.0r 13GS136   568  C~1XRV      
2014 02  24.55457  14 11 44.517  -11 47 49.11  23.6r 13GS136   568  C~1XRV      
2014 02  25.52393  14 11 42.471  -11 47 38.71  24.0r 13GS136   568  C~1XRV      
2014 02  27.63490  14 11 37.704  -11 47 14.61  24.0r 13GS136   568  C~1XRV      
2014 04  05.38215  14 09 16.285  -11 35 29.85  23.5r 13GS136   568  C~1XRV      
2014 04  29.33023  14 07 10.603  -11 25 21.15  23.9r 13GS136   568  C~1XRV      
2014 04  29.37062  14 07 10.387  -11 25 20.03  23.8r 13GS136   568  C~1XRV      
2014 04  29.41097  14 07 10.163  -11 25 19.03  23.9r 13GS136   568  C~1XRV      
2014 05  22.40174  14 05 14.290  -11 16 19.15  24.1r 13GS136   568  C~1XRV      
2014 05  28.37385  14 04 47.886  -11 14 21.32  23.7r 13GS136   568  C~1XRV      
2015 01  26.63271  14 19 18.710  -12 41 49.92  24.0r 13GS136   568  C~1XRV      
2017 05  25.46246  14 27 45.992  -13 58 43.38  23.7r 13GS136   568  C~2KOF      
2017 05  30.28159  14 27 23.286  -13 57 07.53        13GS136   568  C~2KOF      

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    -0.00       0.00     0.03
  2   0.0001     -3.10     0.07      -0.11     0.00
  3   0.0002     -6.36    -0.00      -0.11     0.08
  4   0.0059   -170.09    -0.03      -3.42    -0.06
  5   0.0109   -312.38    -0.05      -6.15    -0.00
  6   0.8929   9500.33     0.04    -830.86     0.00
  7   0.8956   9468.47    -0.10    -831.12    -0.01
  8   0.9014   9394.29     0.07    -831.87    -0.04
  9   1.0020   7197.39     0.05    -866.24     0.09
 10   1.0675   5251.24     0.04    -917.58    -0.18
 11   1.0676   5247.87     0.05    -917.60    -0.07
 12   1.0678   5244.43    -0.01    -917.78    -0.12
 13   1.1307   3457.41    -0.03    -988.60     0.05
 14   1.1471   3051.96    -0.06   -1010.07     0.14
 15   1.8131  16887.41    -0.05   -1682.25     0.10
 16   4.1398  25480.29    -0.06   -3661.14     0.01
 17   4.1530  25131.27     0.07   -3675.97    -0.02

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.

13GS136    quality flag:3

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

axisobj        55.166    55.190    55.142
ecceobj         0.381     0.381     0.381
incobj          6.993     6.993     6.993
qmin           33.604    33.616    33.560
qmax           79.019    78.869    78.733
amean          55.463    55.463    55.463
amin           54.603    54.587    54.667
amax           56.571    56.517    56.469
emean           0.383     0.383     0.382
emin            0.370     0.370     0.370
emax            0.397     0.396     0.396
imean           6.539     6.441     6.647
imin            6.190     6.017     6.084
imax            6.881     6.782     7.118
excite_mean     0.399     0.399     0.400
fracstop        1.000     1.000     1.000
cjmean          3.034     3.035     3.034

libcent 0       179.9     180.1     179.7
libamp  0       136.1     135.7     122.2
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       168.9     166.9     178.9
kozaiamp        179.9     180.0     180.0