Orbit Fit and Astrometric record for 13SO100

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: 13SO100   
# Created Fri Dec 15 02:37:53 2017
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   35
# Arc:   4.07y
# First observation: 2013/08/04
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000087   0.019693   0.000001   0.000841   0.021716   0.000000
# Chi-squared of fit:    11.98 DOF:   62 RMS:  0.10
# Min/Max residuals:    -0.27    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.387844E-05  1.977792E-02  2.562633E-07  8.466295E-04  2.182537E-02  3.267275E-03
# Covariance matrix:
  1.1789E-13  2.8448E-14 -3.6225E-16  2.2923E-15  1.2069E-13  7.1418E-13
  2.8448E-14  4.0904E-13 -3.8170E-15  1.7490E-14  3.0045E-13  5.3694E-12
 -3.6225E-16 -3.8170E-15  6.1240E-14 -2.2408E-14 -2.7688E-15 -5.3644E-14
  2.2923E-15  1.7490E-14 -2.2408E-14  2.7833E-14  1.3710E-14  2.4583E-13
  1.2069E-13  3.0045E-13 -2.7688E-15  1.3710E-14  3.6706E-13  4.2259E-12
  7.1418E-13  5.3694E-12 -5.3644E-14  2.4583E-13  4.2259E-12  7.5470E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.358396   14.333903    0.900264   -0.002924   -0.471933  2456509.006818
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           85.55936 +/-     0.062
Argument of Peri:      249.96026 +/-     0.045
Long of Asc Node:       21.49392 +/-     0.001
Inclination:             2.46369 +/-     0.000
Eccentricity:         0.14153174 +/-    0.0004
Semi-Major Axis:     45.88275960 +/-    0.0059
Time of Perihelion: 2429520.7594 +/-      19.0
Perihelion:          39.38889265 +/-    0.0194
Aphelion:            52.37662655 +/-    0.0199
Period (y)              310.8011 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           45.07093342 +/-    0.0012
Ecliptic Y           10.59083267 +/-    0.0003
Ecliptic Z           -0.28654483 +/-    0.0000
Ecliptic XDOT        -0.00022272 +/-    0.0000
Ecliptic YDOT         0.00250457 +/-    0.0000
Ecliptic ZDOT         0.00010378 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.29942639 +/-    0.0012
Geocenter to KBO     45.81824335 +/-    0.0013
# Hcoef:  7.65

The following table shows the complete astrometric record for 13SO100. 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 (13SO100) followed by the observatory code and reference code for the source of the astrometry.

2013 08  04.50604  00 53 20.069  +05 19 16.05  24.5r 13SO100   568  C~2NKL      
2013 08  05.48147  00 53 18.531  +05 19 06.31  24.3r 13SO100   568  C~2NKL      
2013 08  05.52035  00 53 18.489  +05 19 06.23  24.1r 13SO100   568  C~2NKL      
2013 08  05.52507  00 53 18.449  +05 19 06.10  23.9r 13SO100   568  C~2NKL      
2013 08  05.52988  00 53 18.448  +05 19 05.77  24.5r 13SO100   568  C~2NKL      
2013 08  08.46041  00 53 13.412  +05 18 34.75  24.2r 13SO100   568  C~2NKL      
2013 08  08.49923  00 53 13.347  +05 18 33.96  24.5r 13SO100   568  C~2NKL      
2013 08  31.54522  00 52 14.444  +05 12 28.05  23.7r 13SO100   568  C~2NKL      
2013 08  31.58437  00 52 14.309  +05 12 27.27  24.5r 13SO100   568  C~2NKL      
2013 08  31.58891  00 52 14.318  +05 12 26.99  24.2r 13SO100   568  C~2NKL      
2013 09  01.43103  00 52 11.606  +05 12 10.25  24.2r 13SO100   568  C~2NKM      
2013 09  01.46986  00 52 11.468  +05 12 09.40  24.5r 13SO100   568  C~2NKM      
2013 09  05.41054  00 51 58.276  +05 10 47.49  23.9r 13SO100   568  C~2NKM      
2013 09  05.44934  00 51 58.152  +05 10 46.79  23.9r 13SO100   568  C~2NKM      
2013 09  29.33623  00 50 26.551  +05 01 19.47  24.1r 13SO100   568  C~2NKM      
2013 09  29.34144  00 50 26.542  +05 01 19.34  24.1r 13SO100   568  C~2NKM      
2013 09  29.38034  00 50 26.362  +05 01 18.35  24.1r 13SO100   568  C~2NKM      
2013 09  29.42409  00 50 26.187  +05 01 17.37  24.0r 13SO100   568  C~2NKM      
2013 10  02.41506  00 50 13.867  +05 00 00.85  24.5r 13SO100   568  C~2NKM      
2013 10  04.49793  00 50 05.235  +04 59 07.96  24.2r 13SO100   568  C~2NKM      
2013 10  04.50677  00 50 05.203  +04 59 07.57  24.3r 13SO100   568  C~2NKM      
2013 10  09.47306  00 49 44.629  +04 57 00.90  25.1r 13SO100   568  C~2NKM      
2013 12  05.22570  00 46 40.245  +04 38 21.68  24.0r 13SO100   568  C~2NKM      
2014 08  22.60844  00 56 49.741  +05 44 19.08  24.0r 13SO100   568  C~2NKM      
2014 08  23.58364  00 56 47.106  +05 44 03.14  22.6r 13SO100   568  C~2NKM      
2014 10  23.29942  00 52 58.976  +05 20 41.56  24.3r 13SO100   568  C~2NKM      
2014 10  27.26611  00 52 43.437  +05 19 06.54  24.2r 13SO100   568  C~2NKM      
2014 11  24.25552  00 51 11.518  +05 09 50.84  24.2r 13SO100   568  C~2NKM      
2014 11  25.25172  00 51 09.022  +05 09 36.04  24.1r 13SO100   568  C~2NKM      
2014 12  17.31908  00 50 31.755  +05 06 01.21  23.4r 13SO100   568  C~2NKM      
2015 01  17.27427  00 50 45.065  +05 07 53.59  24.1r 13SO100   568  C~2NKM      
2017 07  23.62323  01 09 48.205  +07 13 39.36        13SO100   568  C~2NKM      
2017 08  25.53214  01 08 58.017  +07 08 43.00  24.5w 13SO100   568  C~2NKM      
2017 08  30.47385  01 08 44.278  +07 07 20.77  24.4w 13SO100   568  C~2NKM      
2017 08  30.52649  01 08 44.115  +07 07 19.53  25.1w 13SO100   568  C~2NKM      

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     0.07
  2   0.0027    -24.95    -0.00      -0.09    -0.07
  3   0.0028    -25.56 (   0.43)      0.08 (   0.08)
  4   0.0028    -26.16    -0.04       0.19     0.19
  5   0.0028    -26.30    -0.05      -0.11    -0.11
  6   0.0108   -107.66     0.02       0.41     0.23
  7   0.0109   -108.86    -0.01       0.05    -0.14
  8   0.0740  -1061.75    -0.10       3.44     0.07
  9   0.0741  -1063.91    -0.19       3.50     0.11
 10   0.0741  -1063.89     0.06       3.19    -0.20
 11   0.0765  -1107.73     0.11       3.46    -0.05
 12   0.0766  -1109.96    -0.04       3.47    -0.06
 13   0.0873  -1323.38    -0.08       4.33    -0.06
 14   0.0875  -1325.36     0.13       4.41    -0.02
 15   0.1529  -2806.99     0.01      12.28     0.00
 16   0.1529  -2807.17     0.18      12.21    -0.07
 17   0.1530  -2810.03    -0.06      12.34     0.03
 18   0.1531  -2812.82     0.09      12.46     0.10
 19   0.1613  -3012.22    -0.07      13.39    -0.27
 20   0.1670  -3151.66    -0.06      14.72     0.06
 21   0.1670  -3152.25    -0.05      14.55    -0.12
 22   0.1806  -3484.85     0.12      17.20     0.10
 23   0.3360  -6461.01    -0.07      57.87     0.06
 24   1.0489   3468.40     0.14     176.73    -0.18
 25   1.0515   3425.95    -0.17     177.20     0.10
 26   1.2178   -257.36    -0.00     200.80     0.17
 27   1.2286   -508.12     0.05     203.06     0.01
 28   1.3053  -1989.26    -0.02     222.94     0.07
 29   1.3080  -2029.38     0.01     223.76     0.11
 30   1.3684  -2625.96    -0.14     241.78    -0.02
 31   1.4532  -2399.04     0.14     268.19    -0.07
 32   3.9675  16271.94     0.05     687.90    -0.05
 33   4.0576  15463.68     0.00     697.53     0.06
 34   4.0711  15242.07     0.07     699.21     0.10
 35   4.0712  15239.34    -0.12     698.99    -0.17

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.

13SO100    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.146    46.164    46.129
ecceobj         0.143     0.144     0.142
incobj          2.456     2.456     2.457
qmin           38.768    38.698    38.761
qmax           53.403    53.473    53.379
amean          45.895    45.912    45.878
amin           45.509    45.518    45.486
amax           46.333    46.356    46.316
emean           0.139     0.140     0.138
emin            0.125     0.126     0.124
emax            0.153     0.154     0.152
imean           2.602     2.603     2.603
imin            1.979     1.976     1.978
imax            3.077     3.078     3.077
excite_mean     0.147     0.148     0.146
fracstop        1.000     1.000     1.000
cjmean          3.098     3.098     3.098

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       178.4     178.1     178.3
kozaiamp        180.0     180.0     179.9