Orbit Fit and Astrometric record for 13GO137

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: 13GO137   
# Created Sun Dec 17 02:37:54 2017
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   34
# Arc:   2.21y
# First observation: 2013/02/08
#  Last observation: 2015/04/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000117   0.019688   0.000020  -0.011047   0.023719   0.000000
# Chi-squared of fit:    20.53 DOF:   62 RMS:  0.14
# Min/Max residuals:    -0.46    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.524806E-05  1.944190E-02 -8.397034E-06 -1.086060E-02  2.357241E-02 -1.494440E-03
# Covariance matrix:
  2.1979E-13 -5.5370E-14  5.7110E-15 -2.7414E-14  1.4245E-13  1.2736E-12
 -5.5370E-14  2.3032E-13  3.9278E-14 -1.4409E-13  1.2455E-13  6.5698E-12
  5.7110E-15  3.9278E-14  1.2457E-13 -1.2426E-13  3.3771E-14  1.9123E-12
 -2.7414E-14 -1.4409E-13 -1.2426E-13  2.4915E-13 -1.3139E-13 -7.0132E-12
  1.4245E-13  1.2455E-13  3.3771E-14 -1.3139E-13  2.5140E-13  6.0182E-12
  1.2736E-12  6.5698E-12  1.9123E-12 -7.0132E-12  6.0182E-12  3.1975E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.921503 -146.743504    0.944420    0.009531   -0.282466  2456332.057178
# Heliocentric elements and errors
Epoch:              2456330.5000  =  2013/02/07
Mean Anomaly:          253.50929 +/-     0.211
Argument of Peri:      292.17810 +/-     0.199
Long of Asc Node:       35.39137 +/-     0.000
Inclination:            29.29608 +/-     0.001
Eccentricity:         0.09054684 +/-    0.0007
Semi-Major Axis:     41.35195355 +/-    0.0053
Time of Perihelion: 2485061.5621 +/-      56.6
Perihelion:          37.60766495 +/-    0.0297
Aphelion:            45.09624214 +/-    0.0299
Period (y)              265.9208 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.20760117 +/-    0.0008
Ecliptic Y          -22.61418803 +/-    0.0005
Ecliptic Z            1.42207415 +/-    0.0000
Ecliptic XDOT         0.00134181 +/-    0.0000
Ecliptic YDOT        -0.00181539 +/-    0.0000
Ecliptic ZDOT        -0.00126640 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.71316164 +/-    0.0007
Geocenter to KBO     42.42247533 +/-    0.0009
# Hcoef:  7.33

The following table shows the complete astrometric record for 13GO137. 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 (13GO137) followed by the observatory code and reference code for the source of the astrometry.

2013 02  08.55640  14 06 48.224  -10 47 32.46  23.6r 13GO137   568  C~1XRY      
2013 02  08.60359  14 06 48.226  -10 47 32.57  23.0r 13GO137   568  C~1XRY      
2013 04  04.41383  14 04 04.513  -10 37 07.53  23.4r 13GO137   568  C~1XRY      
2013 04  04.45396  14 04 04.332  -10 37 06.84  23.4r 13GO137   568  C~1XRY      
2013 04  04.49439  14 04 04.141  -10 37 06.03  23.6r 13GO137   568  C~1XRY      
2013 04  05.53143  14 03 59.427  -10 36 46.59  22.9r 13GO137   568  C~1XRY      
2013 04  05.53531  14 03 59.405  -10 36 46.52  23.5r 13GO137   568  C~1XRY      
2013 04  06.58684  14 03 54.555  -10 36 26.64  23.7r 13GO137   568  C~1XRY      
2013 04  08.38751  14 03 46.244  -10 35 52.72  23.6r 13GO137   568  C~1XRY      
2013 05  11.41804  14 01 09.381  -10 25 30.97  23.6r 13GO137   568  C~1XRY      
2013 05  12.41931  14 01 04.841  -10 25 14.02  23.6r 13GO137   568  C~1XRY      
2013 06  13.25755  13 59 04.294  -10 18 40.68  23.7r 13GO137   568  C~1XRY      
2013 06  13.29820  13 59 04.170  -10 18 40.33  23.8r 13GO137   568  C~1XRY      
2013 07  04.27893  13 58 21.320  -10 17 52.83  23.6r 13GO137   568  C~1XRY      
2013 07  06.28622  13 58 19.093  -10 17 58.68  23.7r 13GO137   568  C~1XRY      
2014 02  25.51607  14 09 47.968  -11 44 22.76  23.5r 13GO137   568  C~1XRY      
2014 02  25.55969  14 09 47.866  -11 44 22.43  23.6r 13GO137   568  C~1XRY      
2014 02  25.60433  14 09 47.754  -11 44 22.14  23.6r 13GO137   568  C~1XRY      
2014 03  26.51083  14 08 12.280  -11 38 32.83        13GO137   568  C~1XRY      
2014 03  27.41673  14 08 08.523  -11 38 18.08  23.4r 13GO137   568  C~1XRY      
2014 03  28.41797  14 08 04.273  -11 38 01.42  23.4r 13GO137   568  C~1XRY      
2014 03  28.45726  14 08 04.104  -11 38 00.83  23.6r 13GO137   568  C~1XRY      
2014 04  05.38215  14 07 29.079  -11 35 42.89  23.1r 13GO137   568  C~1XRY      
2014 04  29.33527  14 05 34.725  -11 28 11.44  23.1r 13GO137   568  C~1XRY      
2014 04  29.41097  14 05 34.349  -11 28 09.88  23.6r 13GO137   568  C~1XRY      
2014 04  29.41601  14 05 34.328  -11 28 09.86  23.4r 13GO137   568  C~1XRY      
2014 05  22.40174  14 03 48.898  -11 21 33.13  23.5r 13GO137   568  C~1XRY      
2014 05  22.40562  14 03 48.880  -11 21 33.12  23.4r 13GO137   568  C~1XRY      
2014 05  28.37385  14 03 24.587  -11 20 08.51  23.5r 13GO137   568  C~1XRY      
2014 05  28.37773  14 03 24.564  -11 20 08.39  23.6r 13GO137   568  C~1XRY      
2015 01  26.65311  14 13 42.486  -12 41 58.53  23.7r 13GO137   568  C~1XRY      
2015 04  27.34173  14 09 15.795  -12 27 57.62  23.2r 13GO137   568  C~2KOG      
2015 04  27.35111  14 09 15.732  -12 27 57.99  24.6u 13GO137   568  C~2KOG      
2015 04  27.40797  14 09 15.466  -12 27 56.35  23.3r 13GO137   568  C~2KOG      

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    -0.46       0.00     0.23
  2   0.0001      0.06     0.24      -0.09     0.32
  3   0.1502  -2481.85    -0.01    -231.82    -0.07
  4   0.1503  -2484.60     0.07    -232.08    -0.10
  5   0.1504  -2487.52    -0.00    -232.27    -0.07
  6   0.1533  -2559.50     0.19    -237.68     0.08
  7   0.1533  -2559.83     0.13    -237.72     0.05
  8   0.1561  -2633.84    -0.20    -243.40     0.05
  9   0.1611  -2760.62    -0.06    -253.29    -0.08
 10   0.2515  -5148.14     0.08    -460.09     0.04
 11   0.2542  -5216.92     0.10    -467.13     0.02
 12   0.3414  -7024.06    -0.02    -709.25    -0.06
 13   0.3415  -7025.90    -0.11    -709.56    -0.02
 14   0.3990  -7636.69     0.01    -883.10    -0.16
 15   0.4045  -7665.56     0.09    -899.94    -0.11
 16   1.0457   3640.38     0.16   -2318.38    -0.07
 17   1.0459   3638.85     0.14   -2318.57    -0.04
 18   1.0460   3637.21     0.05   -2318.85    -0.09
 19   1.1251   2198.72    -0.40   -2462.29    -0.11
 20   1.1276   2141.78     0.10   -2467.03    -0.02
 21   1.1304   2077.37    -0.04   -2472.42     0.00
 22   1.1305   2074.83     0.00   -2472.71    -0.05
 23   1.1522   1543.79    -0.11   -2516.72    -0.09
 24   1.2177   -190.60     0.06   -2661.44    -0.04
 25   1.2179   -196.33    -0.05   -2661.85     0.07
 26   1.2180   -196.62     0.03   -2661.93     0.02
 27   1.2809  -1789.47     0.06   -2816.46     0.10
 28   1.2809  -1789.73     0.06   -2816.55     0.05
 29   1.2972  -2154.50    -0.03   -2858.92    -0.07
 30   1.2973  -2154.86    -0.16   -2858.93    -0.04
 31   1.9633   8041.23     0.08   -4427.34     0.22
 32   2.2116   4076.30     0.02   -4940.96     0.21
 33   2.2116   4075.56    -0.03   -4941.62    -0.39
 34   2.2118   4071.33     0.00   -4941.38     0.23

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.

13GO137    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.235    41.248    41.222
ecceobj         0.094     0.095     0.092
incobj         29.345    29.345    29.345
qmin           37.130    37.054    37.177
qmax           46.044    46.169    46.017
amean          41.483    41.499    41.474
amin           41.171    41.175    41.151
amax           41.830    41.845    41.814
emean           0.088     0.090     0.087
emin            0.076     0.077     0.075
emax            0.102     0.103     0.101
imean          28.627    28.626    28.622
imin           28.244    28.254    28.240
imax           28.927    28.912    28.911
excite_mean     0.487     0.487     0.487
fracstop        1.000     1.000     1.000
cjmean          2.778     2.778     2.778

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       181.6     182.5     182.8
kozaiamp        179.9     180.0     180.0