Orbit Fit and Astrometric record for 13GM137

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: 13GM137   
# Created Sun Oct 22 01:38:14 2017
# Orbit generated from Bernstein formalism
# Fitting   31 observations of   31
# Arc:   3.09y
# First observation: 2013/02/08
#  Last observation: 2016/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000065   0.020930  -0.000023  -0.008654   0.023474   0.000000
# Chi-squared of fit:    12.30 DOF:   56 RMS:  0.11
# Min/Max residuals:    -0.33    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.525042E-05  2.074449E-02 -5.473547E-06 -8.590774E-03  2.331741E-02  2.110335E-03
# Covariance matrix:
  2.0993E-13 -9.3352E-14 -3.4909E-15  9.7909E-15  1.3491E-13 -3.8930E-13
 -9.3352E-14  3.1706E-13  4.7964E-14 -1.1348E-13  2.1255E-13  4.8412E-12
 -3.4909E-15  4.7964E-14  1.3196E-13 -1.0360E-13  4.2615E-14  1.0009E-12
  9.7909E-15 -1.1348E-13 -1.0360E-13  1.4041E-13 -9.8235E-14 -2.3699E-12
  1.3491E-13  2.1255E-13  4.2615E-14 -9.8235E-14  4.4259E-13  4.2389E-12
 -3.8930E-13  4.8412E-12  1.0009E-12 -2.3699E-12  4.2389E-12  1.0107E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.210917 -145.766412    0.949139   -0.000926   -0.266348  2456332.049418
# Heliocentric elements and errors
Epoch:              2456330.5000  =  2013/02/07
Mean Anomaly:           70.81365 +/-     0.043
Argument of Peri:      101.06921 +/-     0.073
Long of Asc Node:       32.46548 +/-     0.000
Inclination:            22.49249 +/-     0.001
Eccentricity:         0.07776507 +/-    0.0004
Semi-Major Axis:     44.04010308 +/-    0.0050
Time of Perihelion: 2435332.1379 +/-      12.3
Perihelion:          40.61532144 +/-    0.0202
Aphelion:            47.46488473 +/-    0.0204
Period (y)              292.2676 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.20887693 +/-    0.0010
Ecliptic Y          -23.48953896 +/-    0.0007
Ecliptic Z           -0.15811504 +/-    0.0000
Ecliptic XDOT         0.00116228 +/-    0.0000
Ecliptic YDOT        -0.00215011 +/-    0.0000
Ecliptic ZDOT        -0.00100947 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.16093383 +/-    0.0009
Geocenter to KBO     42.88640164 +/-    0.0012
# Hcoef:  7.36

The following table shows the complete astrometric record for 13GM137. 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 (13GM137) followed by the observatory code and reference code for the source of the astrometry.

2013 02  08.54864  14 07 36.896  -13 07 46.18  23.7r 13GM137   568  C~1XRY      
2013 02  08.58804  14 07 36.877  -13 07 46.23  22.8r 13GM137   568  C~1XRY      
2013 04  04.40583  14 04 59.047  -12 58 55.65  23.8r 13GM137   568  C~1XRY      
2013 04  04.44572  14 04 58.884  -12 58 54.88  23.0r 13GM137   568  C~1XRY      
2013 04  04.48637  14 04 58.687  -12 58 54.14  23.2r 13GM137   568  C~1XRY      
2013 04  05.48653  14 04 54.226  -12 58 35.92  23.7r 13GM137   568  C~1XRY      
2013 04  05.49040  14 04 54.211  -12 58 35.90  23.5r 13GM137   568  C~1XRY      
2013 04  05.50731  14 04 54.132  -12 58 35.57  22.6r 13GM137   568  C~1XRY      
2013 04  05.51127  14 04 54.109  -12 58 35.63  23.4r 13GM137   568  C~1XRY      
2013 04  06.57873  14 04 49.321  -12 58 15.89  23.2r 13GM137   568  C~1XRY      
2014 02  24.56234  14 11 10.114  -13 59 09.50  23.8r 13GM137   568  C~1XRY      
2014 02  25.52005  14 11 08.117  -13 59 04.99  24.0r 13GM137   568  C~1XRY      
2014 02  25.53194  14 11 08.090  -13 59 04.98  23.6r 13GM137   568  C~1XRY      
2014 02  25.56789  14 11 08.011  -13 59 04.89  23.8r 13GM137   568  C~1XRY      
2014 02  25.60963  14 11 07.920  -13 59 04.52  23.7r 13GM137   568  C~1XRY      
2014 02  27.64280  14 11 03.396  -13 58 53.69  23.6r 13GM137   568  C~1XRY      
2014 03  27.42066  14 09 32.388  -13 53 48.29  23.6r 13GM137   568  C~1XRY      
2014 03  28.42189  14 09 28.265  -13 53 32.68  23.6r 13GM137   568  C~1XRY      
2014 03  28.46125  14 09 28.098  -13 53 32.05  23.6r 13GM137   568  C~1XRY      
2014 04  05.38731  14 08 54.060  -13 51 20.32  23.8r 13GM137   568  C~1XRY      
2014 04  23.13834  14 07 31.88   -13 45 48.3         13GM137   W84  C~1j9S      
2014 04  25.15762  14 07 22.28   -13 45 08.7   24.7V 13GM137   W84  C~1j9S      
2014 04  26.09296  14 07 17.88   -13 44 50.7         13GM137   W84  C~1j9S      
2014 04  29.32010  14 07 02.584  -13 43 47.69  23.6r 13GM137   568  C~1XRY      
2014 04  29.36054  14 07 02.385  -13 43 46.83  23.3r 13GM137   568  C~1XRY      
2014 04  29.40090  14 07 02.189  -13 43 46.12  23.7r 13GM137   568  C~1XRY      
2014 05  22.38938  14 05 19.097  -13 36 37.05  24.0r 13GM137   568  C~1XRY      
2014 05  22.39778  14 05 19.076  -13 36 36.67  23.2r 13GM137   568  C~1XRY      
2014 05  28.36607  14 04 55.347  -13 34 58.76  23.6r 13GM137   568  C~1XRY      
2016 03  13.35457  14 18 21.85   -15 40 11.1   23.5R 13GM137   G37  C~1pQU      
2016 03  13.43605  14 18 21.60   -15 40 10.4         13GM137   G37  C~1pQU      

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    -0.24       0.00    -0.07
  2   0.0001     -0.24    -0.06      -0.14     0.01
  3   0.1502  -2349.93     0.07    -282.59    -0.04
  4   0.1503  -2352.43     0.28    -282.68     0.10
  5   0.1504  -2355.39     0.10    -282.96     0.04
  6   0.1531  -2422.92    -0.04    -288.01     0.07
  7   0.1532  -2423.13     0.02    -288.07     0.03
  8   0.1532  -2424.33    -0.02    -288.15     0.04
  9   0.1532  -2424.62    -0.04    -288.32    -0.11
 10   0.1561  -2497.16    -0.06    -293.57     0.07
 11   1.0432   3964.94    -0.04   -1859.69     0.01
 12   1.0458   3936.03    -0.00   -1865.15     0.05
 13   1.0458   3935.65     0.00   -1865.27     0.01
 14   1.0459   3934.54     0.04   -1865.57    -0.07
 15   1.0460   3933.17     0.01   -1865.67     0.09
 16   1.0516   3867.46     0.00   -1877.48     0.03
 17   1.1276   2516.43     0.05   -2033.66     0.03
 18   1.1304   2454.63    -0.03   -2039.12     0.02
 19   1.1305   2452.12    -0.05   -2039.34     0.03
 20   1.1522   1940.93     0.11   -2081.90     0.03
 21   1.2008    701.89     0.22   -2172.83     0.14
 22   1.2063    556.86    -0.19   -2182.81     0.16
 23   1.2089    490.43     0.32   -2187.54     0.01
 24   1.2177    259.37     0.00   -2203.60    -0.15
 25   1.2178    256.35    -0.09   -2203.77    -0.11
 26   1.2179    253.42    -0.09   -2204.07    -0.19
 27   1.2809  -1305.74    -0.19   -2309.91    -0.33
 28   1.2809  -1306.16    -0.08   -2309.65    -0.04
 29   1.2972  -1664.84    -0.00   -2335.24     0.04
 30   3.0905  11892.21    -0.13   -5518.36     0.03
 31   3.0907  11888.56     0.14   -5518.88     0.08

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.

13GM137    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.881    43.896    43.867
ecceobj         0.075     0.076     0.074
incobj         22.530    22.530    22.531
qmin           40.185    40.177    40.198
qmax           48.377    48.439    48.345
amean          44.169    44.186    44.154
amin           43.831    43.848    43.817
amax           44.536    44.546    44.513
emean           0.075     0.076     0.074
emin            0.064     0.065     0.063
emax            0.087     0.088     0.086
imean          21.908    21.904    21.908
imin           21.565    21.557    21.555
imax           22.187    22.178    22.182
excite_mean     0.381     0.381     0.380
fracstop        1.000     1.000     1.000
cjmean          2.922     2.922     2.922

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       176.3     176.4     176.2
kozaiamp        179.9     180.0     180.0