Orbit Fit and Astrometric record for 13GE137

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: 13GE137   
# Created Sun Oct 22 01:38:14 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   31
# Arc:   4.14y
# First observation: 2013/04/04
#  Last observation: 2017/05/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.039550  -0.000007  -0.002670   0.032476   0.000000
# Chi-squared of fit:    11.04 DOF:   56 RMS:  0.11
# Min/Max residuals:    -0.28    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.971245E-05  4.039582E-02 -1.564663E-06 -2.730711E-03  3.312963E-02  6.718441E-03
# Covariance matrix:
  1.2307E-13 -1.4692E-13 -3.4891E-15  9.5837E-15  1.9659E-14 -8.8245E-13
 -1.4692E-13  3.7924E-13  9.9302E-15 -2.7525E-14  3.8778E-14  2.5322E-12
 -3.4891E-15  9.9302E-15  7.6821E-14 -3.2788E-14  4.7259E-16  7.4026E-14
  9.5837E-15 -2.7525E-14 -3.2788E-14  3.8711E-14 -1.6683E-15 -2.0482E-13
  1.9659E-14  3.8778E-14  4.7259E-16 -1.6683E-15  1.3778E-13  1.5021E-13
 -8.8245E-13  2.5322E-12  7.4026E-14 -2.0482E-13  1.5021E-13  1.8846E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.153170 -145.800329    0.333661   -0.002491   -0.944382  2456386.918628
# Heliocentric elements and errors
Epoch:              2456380.5000  =  2013/03/29
Mean Anomaly:           27.34289 +/-     0.008
Argument of Peri:      136.32606 +/-     0.015
Long of Asc Node:       31.38528 +/-     0.000
Inclination:             3.86757 +/-     0.000
Eccentricity:         0.25721806 +/-    0.0001
Semi-Major Axis:     39.30334981 +/-    0.0043
Time of Perihelion: 2449544.7732 +/-       1.7
Perihelion:          29.19381841 +/-    0.0057
Aphelion:            49.41288121 +/-    0.0071
Period (y)              246.4067 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.93258148 +/-    0.0003
Ecliptic Y          -17.21878850 +/-    0.0002
Ecliptic Z           -0.08071840 +/-    0.0000
Ecliptic XDOT         0.00141140 +/-    0.0000
Ecliptic YDOT        -0.00307241 +/-    0.0000
Ecliptic ZDOT        -0.00022701 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.12863593 +/-    0.0003
Geocenter to KBO     30.18446076 +/-    0.0003
# Hcoef:  8.92

The following table shows the complete astrometric record for 13GE137. 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 (13GE137) followed by the observatory code and reference code for the source of the astrometry.

2013 04  04.41785  14 07 33.835  -13 03 49.27  23.7r 13GE137   568  C~1XRX      
2013 04  04.45816  14 07 33.608  -13 03 48.23  23.6r 13GE137   568  C~1XRX      
2013 04  04.49859  14 07 33.370  -13 03 47.08  23.9r 13GE137   568  C~1XRX      
2013 04  05.54022  14 07 27.446  -13 03 17.78  24.1r 13GE137   568  C~1XRX      
2013 04  05.54410  14 07 27.425  -13 03 17.51  23.3r 13GE137   568  C~1XRX      
2013 04  05.54905  14 07 27.389  -13 03 17.54  23.6r 13GE137   568  C~1XRX      
2013 04  06.59098  14 07 21.428  -13 02 47.95  23.4r 13GE137   568  C~1XRX      
2013 04  08.39181  14 07 11.015  -13 01 56.52  24.4r 13GE137   568  C~1XRX      
2013 05  11.42210  14 03 53.199  -12 45 26.62  23.5r 13GE137   568  C~1XRX      
2013 05  12.42371  14 03 47.484  -12 44 57.85  23.6r 13GE137   568  C~1XRX      
2013 06  13.26162  14 01 18.668  -12 32 29.83        13GE137   568  C~1XRX      
2013 06  13.30208  14 01 18.505  -12 32 29.16  23.7r 13GE137   568  C~1XRX      
2013 07  04.28289  14 00 31.130  -12 28 42.15  23.6r 13GE137   568  C~1XRX      
2013 07  06.29052  14 00 29.172  -12 28 34.16  23.9r 13GE137   568  C~1XRX      
2014 02  01.63775  14 19 10.864  -14 11 12.43  23.6r 13GE137   568  C~1XRX      
2014 02  02.63560  14 19 11.539  -14 11 18.01  23.8r 13GE137   568  C~1XRX      
2014 02  03.58019  14 19 12.074  -14 11 22.78  23.5r 13GE137   568  C~1XRX      
2014 02  24.59733  14 18 54.499  -14 10 39.51  24.4r 13GE137   568  C~1XRX      
2014 02  25.58039  14 18 52.347  -14 10 30.83  24.1r 13GE137   568  C~1XRX      
2014 02  28.52833  14 18 45.238  -14 10 01.25  23.9r 13GE137   568  C~1XRX      
2014 04  04.43113  14 16 17.022  -13 58 42.04  23.6r 13GE137   568  C~1XRX      
2014 04  04.47037  14 16 16.801  -13 58 41.04  23.6r 13GE137   568  C~1XRX      
2014 04  05.54517  14 16 10.800  -13 58 12.43  23.5r 13GE137   568  C~1XRX      
2014 04  05.55400  14 16 10.739  -13 58 12.35  23.8r 13GE137   568  C~1XRX      
2014 05  22.38550  14 11 35.483  -13 35 56.39  24.1r 13GE137   568  C~1XRX      
2014 05  28.36219  14 11 04.822  -13 33 25.52  23.8r 13GE137   568  C~1XRX      
2014 06  26.32099  14 09 17.604  -13 24 40.66  24.3r 13GE137   568  C~1XRX      
2014 07  18.28768  14 08 55.110  -13 23 03.47  23.5r 13GE137   568  C~1XRX      
2017 05  26.22994  14 37 03.10   -16 09 45.1   23.4R 13GE137   G37  C~2Gia      
2017 05  26.29754  14 37 02.70   -16 09 43.3         13GE137   G37  C~2Gia      
2017 05  27.33451  14 36 57.086  -16 09 18.38  23.2r 13GE137   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    -0.09       0.00     0.05
  2   0.0001     -3.47     0.02      -0.14     0.01
  3   0.0002     -7.13    -0.05      -0.23     0.00
  4   0.0031    -98.51    -0.01      -1.90     0.08
  5   0.0031    -98.89    -0.05      -1.74     0.24
  6   0.0031    -99.37    -0.09      -1.95     0.05
  7   0.0059   -191.35     0.10      -3.53     0.20
  8   0.0109   -351.95     0.03      -6.56     0.02
  9   0.1013  -3408.94    -0.00     -57.77    -0.01
 10   0.1041  -3497.37     0.09     -59.25    -0.03
 11   0.1912  -5801.13     0.28    -102.03     0.04
 12   0.1913  -5803.60    -0.02    -102.22    -0.07
 13   0.2488  -6533.76    -0.06    -127.56    -0.11
 14   0.2543  -6563.47    -0.14    -129.93    -0.14
 15   0.8302  10937.27    -0.03    -438.59    -0.02
 16   0.8329  10948.40    -0.12    -440.66    -0.06
 17   0.8355  10957.34    -0.04    -442.64    -0.13
 18   0.8930  10700.93     0.16    -485.26    -0.01
 19   0.8957  10668.43     0.09    -487.28    -0.06
 20   0.9038  10560.77     0.08    -493.12    -0.03
 21   0.9994   8296.03    -0.01    -559.05    -0.03
 22   0.9995   8292.66     0.01    -559.17    -0.05
 23   1.0024   8200.62    -0.02    -560.93     0.11
 24   1.0024   8199.75    -0.11    -561.14    -0.09
 25   1.1306   3969.88    -0.05    -630.75    -0.07
 26   1.1470   3497.95     0.09    -637.93    -0.08
 27   1.2263   1848.27     0.00    -667.74     0.04
 28   1.2864   1506.45    -0.07    -686.59     0.04
 29   4.1419  28075.21     0.09   -2279.39     0.17
 30   4.1420  28069.06    -0.28   -2279.45     0.19
 31   4.1449  27982.87     0.19   -2280.51    -0.24

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.

13GE137    quality flag:3

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

axisobj        39.134    39.148    39.120
ecceobj         0.253     0.254     0.253
incobj          3.873     3.873     3.873
qmin           28.519    28.476    28.514
qmax           51.013    51.002    50.982
amean          39.455    39.455    39.455
amin           39.007    39.002    38.982
amax           39.982    39.989    40.018
emean           0.260     0.260     0.260
emin            0.244     0.246     0.245
emax            0.277     0.277     0.276
imean           3.345     3.381     3.314
imin            2.483     2.566     2.596
imax            4.044     4.147     4.027
excite_mean     0.267     0.267     0.267
fracstop        1.000     1.000     1.000
cjmean          2.969     2.969     2.970

libcent 0       180.2     179.9     179.8
libamp  0        80.6      77.5      82.7
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       222.7     220.7     224.8
kozaiamp        180.0     180.0     179.9