Orbit Fit and Astrometric record for 13GX136

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: 13GX136   
# Created Tue Oct 24 01:38:13 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   4.22y
# First observation: 2013/03/07
#  Last observation: 2017/05/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000290   0.031787   0.000004  -0.000533   0.027277   0.000000
# Chi-squared of fit:    11.58 DOF:   60 RMS:  0.10
# Min/Max residuals:    -0.31    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.836086E-05  3.140919E-02  8.832184E-07 -5.257158E-04  2.752421E-02 -2.756017E-03
# Covariance matrix:
  1.4200E-13 -1.4087E-13 -7.4934E-16  2.3830E-15  9.3220E-14 -1.2874E-12
 -1.4087E-13  4.4950E-13  2.0946E-15 -8.2668E-15 -4.3424E-15  4.5934E-12
 -7.4934E-16  2.0946E-15  6.2623E-14 -3.3487E-14 -3.4048E-16  2.4778E-14
  2.3830E-15 -8.2668E-15 -3.3487E-14  6.0293E-14  2.8129E-16 -9.7562E-14
  9.3220E-14 -4.3424E-15 -3.4048E-16  2.8129E-16  1.7024E-13 -8.8371E-14
 -1.2874E-12  4.5934E-12  2.4778E-14 -9.7562E-14 -8.8371E-14  5.4195E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.563012 -145.515265    0.730669    0.006643   -0.672138  2456359.050198
# Heliocentric elements and errors
Epoch:              2456350.5000  =  2013/02/27
Mean Anomaly:          341.48451 +/-     0.035
Argument of Peri:      180.96240 +/-     0.064
Long of Asc Node:       63.53582 +/-     0.011
Inclination:             1.09935 +/-     0.000
Eccentricity:         0.24925193 +/-    0.0001
Semi-Major Axis:     47.87777929 +/-    0.0042
Time of Perihelion: 2462573.9647 +/-      11.7
Perihelion:          35.94415016 +/-    0.0060
Aphelion:            59.81140842 +/-    0.0073
Period (y)              331.2907 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.91239012 +/-    0.0005
Ecliptic Y          -20.34582833 +/-    0.0003
Ecliptic Z            0.35704826 +/-    0.0000
Ecliptic XDOT         0.00198821 +/-    0.0000
Ecliptic YDOT        -0.00241968 +/-    0.0000
Ecliptic ZDOT        -0.00005485 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.00886485 +/-    0.0004
Geocenter to KBO     36.33164512 +/-    0.0005
# Hcoef:  8.30

The following table shows the complete astrometric record for 13GX136. 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 (13GX136) followed by the observatory code and reference code for the source of the astrometry.

2013 03  07.54942  14 09 39.244  -12 29 07.23  24.1r 13GX136   568  C~1XRW      
2013 03  07.60676  14 09 39.080  -12 29 06.13  23.4r 13GX136   568  C~1XRW      
2013 04  04.42184  14 07 47.143  -12 19 12.60  23.7r 13GX136   568  C~1XRW      
2013 04  04.46233  14 07 46.946  -12 19 11.67  23.6r 13GX136   568  C~1XRW      
2013 04  04.50260  14 07 46.754  -12 19 10.64  24.4r 13GX136   568  C~1XRW      
2013 04  04.55066  14 07 46.517  -12 19 09.45  24.3r 13GX136   568  C~1XRW      
2013 04  05.55312  14 07 41.725  -12 18 43.87        13GX136   568  C~1XRW      
2013 04  05.55702  14 07 41.681  -12 18 43.92  24.0r 13GX136   568  C~1XRW      
2013 04  06.59497  14 07 36.660  -12 18 17.45  23.4r 13GX136   568  C~1XRW      
2013 04  07.41104  14 07 32.693  -12 17 56.53  23.9r 13GX136   568  C~1XRW      
2013 04  07.45481  14 07 32.482  -12 17 55.37  23.5r 13GX136   568  C~1XRW      
2013 04  08.39569  14 07 27.888  -12 17 31.34  24.3r 13GX136   568  C~1XRW      
2013 04  08.44342  14 07 27.645  -12 17 30.08  24.6r 13GX136   568  C~1XRW      
2013 04  08.48862  14 07 27.419  -12 17 28.92  23.0r 13GX136   568  C~1XRW      
2013 04  09.39005  14 07 22.967  -12 17 05.45  23.6r 13GX136   568  C~1XRW      
2013 04  09.43325  14 07 22.757  -12 17 04.30  23.5r 13GX136   568  C~1XRW      
2013 04  09.47643  14 07 22.544  -12 17 03.14  23.2r 13GX136   568  C~1XRW      
2013 05  11.42609  14 04 40.683  -12 02 58.30  23.9r 13GX136   568  C~1XRW      
2013 05  12.42771  14 04 35.836  -12 02 33.19  24.1r 13GX136   568  C~1XRW      
2013 06  13.26550  14 02 28.814  -11 51 43.28  24.0r 13GX136   568  C~1XRW      
2013 06  13.30597  14 02 28.681  -11 51 42.67  23.8r 13GX136   568  C~1XRW      
2013 07  04.28711  14 01 46.999  -11 48 23.73        13GX136   568  C~1XRW      
2013 07  06.29463  14 01 45.162  -11 48 16.35  24.1r 13GX136   568  C~1XRW      
2014 02  24.56622  14 17 02.451  -13 09 12.55  24.2r 13GX136   568  C~1XRW      
2014 02  25.53582  14 17 00.580  -13 09 02.55  24.3r 13GX136   568  C~1XRW      
2014 02  27.64669  14 16 56.186  -13 08 39.16  24.0r 13GX136   568  C~1XRW      
2014 03  28.43778  14 15 18.800  -13 00 12.36  23.9r 13GX136   568  C~1XRW      
2014 03  28.47685  14 15 18.623  -13 00 11.44  24.0r 13GX136   568  C~1XRW      
2014 04  05.40750  14 14 42.195  -12 57 03.89  23.7r 13GX136   568  C~1XRW      
2014 05  25.45812  14 10 33.773  -12 35 59.77  23.8r 13GX136   568  C~1XRW      
2015 01  26.61744  14 24 06.406  -13 46 54.00        13GX136   568  C~1XRW      
2015 03  21.61206  14 22 51.020  -13 40 14.78  23.9r 13GX136   568  C~2KOF      
2017 05  28.34479  14 31 39.606  -14 27 39.52  22.5r 13GX136   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    -0.07       0.00    -0.24
  2   0.0002     -2.63     0.11       0.23    -0.01
  3   0.0763  -1746.64    -0.11       7.06    -0.03
  4   0.0764  -1749.67    -0.07       6.96    -0.11
  5   0.0765  -1752.66    -0.02       6.98    -0.07
  6   0.0767  -1756.33    -0.05       6.93    -0.10
  7   0.0794  -1831.08     0.19       7.30     0.24
  8   0.0794  -1831.67    -0.10       7.04    -0.02
  9   0.0823  -1909.88    -0.04       7.11     0.04
 10   0.0845  -1971.67    -0.16       7.17     0.03
 11   0.0846  -1974.97    -0.07       7.22     0.10
 12   0.0872  -2046.47     0.17       7.10    -0.04
 13   0.0873  -2050.25     0.11       7.09    -0.03
 14   0.0874  -2053.76     0.12       7.06    -0.03
 15   0.0899  -2123.10    -0.11       7.11    -0.01
 16   0.0900  -2126.39    -0.02       7.15     0.06
 17   0.0901  -2129.72     0.04       7.19     0.12
 18   0.1776  -4649.67     0.00      -2.57    -0.08
 19   0.1804  -4725.12     0.04      -3.15    -0.09
 20   0.2675  -6700.56     0.10     -28.12     0.14
 21   0.2676  -6702.61    -0.06     -28.21     0.10
 22   0.3251  -7346.42     0.05     -50.79    -0.00
 23   0.3306  -7374.33    -0.00     -53.10    -0.01
 24   0.9692   6915.87     0.10    -113.27    -0.01
 25   0.9719   6886.74     0.02    -112.82    -0.04
 26   0.9777   6818.36     0.02    -111.86    -0.02
 27   1.0565   5306.59    -0.07    -102.89    -0.01
 28   1.0566   5303.85    -0.11    -102.87     0.02
 29   1.0783   4738.98    -0.31    -102.12     0.21
 30   1.2154    890.54     0.13    -120.84     0.08
 31   1.8893  13516.33     0.27    -237.38    -0.12
 32   2.0371  12343.17    -0.07    -214.17    -0.10
 33   4.2239  20593.16    -0.04    -457.08     0.03

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.

13GX136    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.667    47.679    47.654
ecceobj         0.247     0.247     0.247
incobj          1.100     1.100     1.100
qmin           35.231    35.223    35.202
qmax           61.555    61.586    61.577
amean          47.798    47.799    47.798
amin           47.069    47.056    47.085
amax           48.657    48.675    48.626
emean           0.249     0.249     0.249
emin            0.233     0.233     0.233
emax            0.266     0.266     0.267
imean           0.936     0.941     0.928
imin            0.654     0.644     0.680
imax            1.221     1.221     1.188
excite_mean     0.250     0.249     0.250
fracstop        1.000     1.000     1.000
cjmean          3.070     3.070     3.070

libcent 0       179.8     179.8     179.7
libamp  0       158.4     160.4     157.1
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       178.6     194.5     162.6
kozaiamp        179.9     179.9     179.9