Orbit Fit and Astrometric record for 13GO136

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: 13GO136   
# Created Tue Oct 17 01:38:13 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   4.22y
# First observation: 2013/03/07
#  Last observation: 2017/05/26
Preliminary a, adot, b, bdot, g, gdot:
  -0.000234   0.026992   0.000036  -0.012211   0.027487   0.000000
# Chi-squared of fit:    20.41 DOF:   60 RMS:  0.14
# Min/Max residuals:    -0.45    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.390719E-05  2.685029E-02 -7.612979E-06 -1.212361E-02  2.770028E-02  1.423012E-03
# Covariance matrix:
  1.1990E-13 -8.4779E-14 -1.3031E-14  4.1161E-14  7.1740E-14 -8.8486E-13
 -8.4779E-14  2.4129E-13  3.9779E-14 -1.2644E-13  3.0211E-14  2.7379E-12
 -1.3031E-14  3.9779E-14  7.5180E-14 -5.5528E-14  1.1885E-15  5.4852E-13
  4.1161E-14 -1.2644E-13 -5.5528E-14  1.2011E-13 -4.3234E-15 -1.7426E-12
  7.1740E-14  3.0211E-14  1.1885E-15 -4.3234E-15  1.7295E-13  1.0716E-13
 -8.8486E-13  2.7379E-12  5.4852E-13 -1.7426E-12  1.0716E-13  3.7708E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.355045 -140.406870    0.787529    0.003784   -0.604547  2456359.058558
# Heliocentric elements and errors
Epoch:              2456350.5000  =  2013/02/27
Mean Anomaly:           28.67634 +/-     0.135
Argument of Peri:      146.92584 +/-     0.157
Long of Asc Node:       39.13459 +/-     0.000
Inclination:            24.30929 +/-     0.000
Eccentricity:         0.05973084 +/-    0.0002
Semi-Major Axis:     38.70451941 +/-    0.0033
Time of Perihelion: 2449344.6288 +/-      33.1
Perihelion:          36.39266612 +/-    0.0069
Aphelion:            41.01637270 +/-    0.0071
Period (y)              240.7968 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -28.78488978 +/-    0.0004
Ecliptic Y          -22.78399343 +/-    0.0003
Ecliptic Z            0.22344228 +/-    0.0000
Ecliptic XDOT         0.00157102 +/-    0.0000
Ecliptic YDOT        -0.00213871 +/-    0.0000
Ecliptic ZDOT        -0.00119725 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.71144457 +/-    0.0004
Geocenter to KBO     36.10071338 +/-    0.0005
# Hcoef:  8.30

The following table shows the complete astrometric record for 13GO136. 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 (13GO136) followed by the observatory code and reference code for the source of the astrometry.

2013 03  07.55778  14 29 13.956  -14 20 56.00  24.1r 13GO136   568  C~1WkW      
2013 03  07.56275  14 29 13.917  -14 20 55.92  23.2r 13GO136   568  C~1WkW      
2013 03  07.61473  14 29 13.743  -14 20 55.56  23.2r 13GO136   568  C~1WkW      
2013 04  04.55875  14 27 19.269  -14 14 50.52  23.8r 13GO136   568  C~1WkW      
2013 04  07.41899  14 27 04.815  -14 14 00.10  24.1r 13GO136   568  C~1WkW      
2013 04  07.46275  14 27 04.593  -14 13 59.45  23.7r 13GO136   568  C~1WkW      
2013 04  07.46759  14 27 04.551  -14 13 59.21  23.2r 13GO136   568  C~1WkW      
2013 04  07.47260  14 27 04.535  -14 13 59.09  24.2r 13GO136   568  C~1WkW      
2013 04  07.47750  14 27 04.503  -14 13 59.31  23.9r 13GO136   568  C~1WkW      
2013 04  08.45133  14 26 59.499  -14 13 41.54  23.4r 13GO136   568  C~1WkW      
2013 04  08.49654  14 26 59.268  -14 13 40.93  24.1r 13GO136   568  C~1WkW      
2013 04  09.39790  14 26 54.601  -14 13 24.20  23.5r 13GO136   568  C~1WkW      
2013 04  09.44107  14 26 54.374  -14 13 23.47  23.6r 13GO136   568  C~1WkW      
2013 04  09.48468  14 26 54.131  -14 13 22.68  24.1r 13GO136   568  C~1WkW      
2013 05  11.48618  14 23 58.679  -14 02 52.25  23.6r 13GO136   568  C~1WkW      
2013 05  12.48847  14 23 53.254  -14 02 32.85  23.6r 13GO136   568  C~1WkW      
2013 06  12.38358  14 21 27.897  -13 54 20.36  24.0r 13GO136   568  C~1WkW      
2013 06  12.42921  14 21 27.712  -13 54 20.00  24.3r 13GO136   568  C~1WkW      
2013 08  02.26651  14 20 15.385  -13 54 32.83  24.6r 13GO136   568  C~1WkW      
2014 02  01.63271  14 35 00.423  -15 28 00.63  23.0r 13GO136   568  C~1WkW      
2014 02  02.63050  14 35 01.079  -15 28 11.53  24.1r 13GO136   568  C~1WkW      
2014 02  03.57515  14 35 01.639  -15 28 21.14  24.3r 13GO136   568  C~1WkW      
2014 02  24.61287  14 34 48.113  -15 29 57.90  24.2r 13GO136   568  C~1WkW      
2014 02  25.59592  14 34 46.326  -15 29 57.00  23.7r 13GO136   568  C~1WkW      
2014 02  28.54389  14 34 40.339  -15 29 51.41  23.7r 13GO136   568  C~1WkW      
2014 04  04.49467  14 32 30.861  -15 24 05.10  24.2r 13GO136   568  C~1WkW      
2014 04  05.58481  14 32 25.417  -15 23 47.30        13GO136   568  C~1WkW      
2014 05  22.43036  14 28 11.361  -15 09 08.41  23.9r 13GO136   568  C~1WkW      
2014 05  25.36167  14 27 56.498  -15 08 16.27  23.9r 13GO136   568  C~1WkW      
2015 04  21.49145  14 36 16.141  -16 28 02.13  23.6r 13GO136   568  C~2KOF      
2015 04  21.52752  14 36 15.936  -16 28 01.39  23.7r 13GO136   568  C~2KOF      
2017 05  26.23537  14 43 37.23   -18 33 25.1   23.6R 13GO136   G37  C~2Gia      
2017 05  26.30305  14 43 36.90   -18 33 23.9         13GO136   G37  C~2Gia      

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     0.29       0.00     0.14
  2   0.0000     -0.56    -0.05      -0.10     0.07
  3   0.0002     -3.08    -0.21      -0.56    -0.03
  4   0.0767  -1696.87     0.11    -182.48     0.19
  5   0.0845  -1912.15     0.06    -201.61     0.14
  6   0.0846  -1915.41     0.19    -202.03     0.04
  7   0.0846  -1916.07    -0.09    -201.99     0.11
  8   0.0846  -1916.33     0.04    -201.95     0.18
  9   0.0847  -1916.70     0.05    -202.31    -0.14
 10   0.0873  -1991.33     0.03    -208.65     0.05
 11   0.0874  -1994.71     0.19    -209.14    -0.12
 12   0.0899  -2064.37     0.06    -214.91     0.13
 13   0.0900  -2067.73     0.10    -215.27     0.08
 14   0.0901  -2071.33    -0.06    -215.65     0.02
 15   0.1778  -4691.65     0.05    -435.80    -0.10
 16   0.1805  -4772.68     0.04    -442.84    -0.13
 17   0.2651  -6935.94    -0.08    -660.39    -0.01
 18   0.2652  -6938.61    -0.16    -660.92    -0.21
 19   0.4044  -7931.76    -0.11   -1015.46    -0.05
 20   0.9064   6032.15     0.15   -2248.98     0.15
 21   0.9092   6044.56    -0.16   -2256.41    -0.09
 22   0.9118   6055.25    -0.00   -2263.04     0.06
 23   0.9694   5899.29    -0.26   -2415.76     0.07
 24   0.9720   5874.43    -0.13   -2422.92     0.08
 25   0.9801   5790.37    -0.13   -2444.48     0.02
 26   1.0758   3902.54     0.18   -2698.85    -0.10
 27   1.0788   3822.16    -0.22   -2706.58     0.04
 28   1.2070     55.55     0.01   -3031.28    -0.45
 29   1.2151   -165.09    -0.04   -3050.20    -0.10
 30   2.1217   8188.93     0.03   -5339.46    -0.21
 31   2.1218   8185.89    -0.02   -5339.66    -0.15
 32   4.2181  16531.01    -0.13  -10614.89     0.09
 33   4.2183  16526.14     0.28  -10615.14     0.21

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.

13GO136    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.579    38.589    38.568
ecceobj         0.056     0.056     0.056
incobj         24.341    24.342    24.341
qmin           35.618    35.629    35.652
qmax           42.223    42.333    42.240
amean          38.841    38.865    38.830
amin           38.551    38.562    38.539
amax           39.158    39.187    39.133
emean           0.064     0.066     0.064
emin            0.050     0.052     0.050
emax            0.079     0.081     0.080
imean          22.976    22.976    22.973
imin           22.218    22.224    22.216
imax           23.807    23.815    23.807
excite_mean     0.396     0.396     0.395
fracstop        1.000     1.000     1.000
cjmean          2.863     2.863     2.863

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       182.2     180.9     182.8
kozaiamp        179.9     180.0     180.0