Orbit Fit and Astrometric record for 13SG101

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: 13SG101   
# Created Fri Dec 15 02:37:53 2017
# Orbit generated from Bernstein formalism
# Fitting   35 observations of   36
# Arc:   4.07y
# First observation: 2013/08/05
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000158   0.022525  -0.000001  -0.000534   0.022975   0.000000
# Chi-squared of fit:    16.06 DOF:   64 RMS:  0.12
# Min/Max residuals:    -0.28    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.468030E-05  2.242904E-02  5.853688E-08 -5.329705E-04  2.302771E-02  4.967155E-04
# Covariance matrix:
  1.2330E-13 -4.0667E-14  1.6983E-16  1.8516E-16  6.6987E-14 -1.2143E-13
 -4.0667E-14  2.2934E-13  2.4806E-15 -5.6008E-15  1.2221E-13  2.4987E-12
  1.6983E-16  2.4806E-15  7.0216E-14 -2.6177E-14  1.9780E-15  3.0545E-14
  1.8516E-16 -5.6008E-15 -2.6177E-14  2.4087E-14 -3.6401E-15 -6.8359E-14
  6.6987E-14  1.2221E-13  1.9780E-15 -3.6401E-15  1.8259E-13  1.5676E-12
 -1.2143E-13  2.4987E-12  3.0545E-14 -6.8359E-14  1.5676E-12  3.0455E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.137090   12.355740    0.874792   -0.010237   -0.517211  2456510.005588
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:          359.95610 +/-     0.229
Argument of Peri:      219.14594 +/-     0.258
Long of Asc Node:      152.13781 +/-     0.008
Inclination:             1.78165 +/-     0.000
Eccentricity:         0.05763516 +/-    0.0000
Semi-Major Axis:     46.64038277 +/-    0.0030
Time of Perihelion: 2456524.6874 +/-      74.1
Perihelion:          43.95225682 +/-    0.0037
Aphelion:            49.32850871 +/-    0.0039
Period (y)              318.5307 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.10405602 +/-    0.0008
Ecliptic Y            8.54978042 +/-    0.0002
Ecliptic Z           -0.86172699 +/-    0.0000
Ecliptic XDOT        -0.00052039 +/-    0.0000
Ecliptic YDOT         0.00261642 +/-    0.0000
Ecliptic ZDOT        -0.00006439 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.95225778 +/-    0.0008
Geocenter to KBO     43.42593635 +/-    0.0008
# Hcoef:  8.11

The following table shows the complete astrometric record for 13SG101. 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 (13SG101) followed by the observatory code and reference code for the source of the astrometry.

2013 08  05.50481  00 47 13.980  +03 50 07.94  25.4r 13SG101   568  C~2NKO      
2013 08  08.48371  00 47 08.471  +03 49 27.53  23.9r 13SG101   568  C~2NKO      
2013 08  08.52252  00 47 08.395  +03 49 27.16  23.9r 13SG101   568  C~2NKO      
2013 09  01.45434  00 46 02.759  +03 41 54.84  25.0r 13SG101   568  C~2NKO      
2013 09  01.49328  00 46 02.623  +03 41 53.89  24.8r 13SG101   568  C~2NKO      
2013 09  01.50224  00 46 02.569  +03 41 53.88  24.4r 13SG101   568  C~2NKO      
2013 09  05.43382  00 45 48.730  +03 40 21.14  24.1r 13SG101   568  C~2NKP      
2013 09  05.47268  00 45 48.590  +03 40 20.21  24.6r 13SG101   568  C~2NKP      
2013 09  29.36482  00 44 12.930  +03 29 53.41  24.4r 13SG101   568  C~2NKP      
2013 09  29.40366  00 44 12.765  +03 29 52.23  24.8r 13SG101   568  C~2NKP      
2013 09  29.50581  00 44 12.319  +03 29 49.36  24.0r 13SG101   568  C~2NKP      
2013 09  29.51034  00 44 12.268  +03 29 49.62  24.1r 13SG101   568  C~2NKP      
2013 10  05.36346  00 43 47.286  +03 27 08.30  24.1r 13SG101   568  C~2NKP      
2013 10  06.37195  00 43 42.956  +03 26 40.37  24.5r 13SG101   568  C~2NKP      
2013 10  06.43634  00 43 42.672  +03 26 38.64  24.2r 13SG101   568  C~2NKP      
2013 10  07.35873  00 43 38.730  +03 26 13.31  24.6r 13SG101   568  C~2NKP      
2013 11  27.34255  00 40 39.117  +03 07 36.82  24.3r 13SG101   568  C~2NKP      
2013 12  05.24487  00 40 24.371  +03 06 12.35  24.7r 13SG101   568  C~2NKP      
2014 06  25.60449  00 52 01.853  +04 19 48.66  24.8r 13SG101   568  C~2NKP      
2014 06  26.60333  00 52 03.490  +04 19 56.74  24.1r 13SG101   568  C~2NKP      
2014 07  23.57931  00 52 16.522  +04 20 24.15  24.4r 13SG101   568  C~2NKP      
2014 07  27.55990  00 52 13.419  +04 19 56.73  24.5r 13SG101   568  C~2NKP      
2014 08  24.50155  00 51 18.234  +04 13 19.78  24.5r 13SG101   568  C~2NKP      
2014 08  28.47368  00 51 06.175  +04 11 58.02  24.9r 13SG101   568  C~2NKP      
2014 10  23.30719  00 47 23.107  +03 47 55.07  24.3r 13SG101   568  C~2NKP      
2014 10  27.27389  00 47 07.191  +03 46 15.44  24.5r 13SG101   568  C~2NKP      
2014 11  24.28665  00 45 34.460  +03 36 49.41  24.3r 13SG101   568  C~2NKP      
2014 11  25.31299  00 45 31.920  +03 36 34.30  24.5r 13SG101   568  C~2NKP      
2014 12  17.35510  00 44 57.009  +03 33 21.34  22.7r 13SG101   568  C~2NKP      
2015 01  18.24571  00 45 19.297  +03 36 29.59  24.3r 13SG101   568  C~2NKP      
2015 12  07.36547  00 49 55.048  +04 02 33.98  24.4w 13SG101   568  C~2NKP      
2017 07  17.61600  01 06 35.124  +05 44 02.44  24.8w 13SG101   568  C~2NKP      
2017 07  23.61854  01 06 34.671  +05 43 46.68        13SG101   568  C~2NKP      
2017 08  25.50837  01 05 41.970  +05 37 18.48  24.5w 13SG101   568  C~2NKP      
2017 08  30.45058  01 05 27.517  +05 35 41.46  24.9w 13SG101   568  C~2NKP      
2017 08  30.49734  01 05 27.361  +05 35 40.61  25.0w 13SG101   568  C~2NKP      

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     0.15       0.00    -0.09
  2   0.0082    -91.68     0.23      -5.11    -0.28
  3   0.0083    -92.87     0.34      -5.01    -0.14
  4   0.0738  -1173.90    -0.02     -38.83     0.05
  5   0.0739  -1176.14    -0.03     -38.91    -0.01
  6   0.0739  -1176.89    -0.27     -38.61     0.31
  7   0.0847  -1403.82    -0.14     -43.27     0.13
  8   0.0848  -1406.11    -0.09     -43.30     0.11
  9   0.1502  -2969.44     0.00     -61.94     0.10
 10   0.1503  -2972.18     0.00     -62.06    -0.02
 11   0.1506  -2979.45    -0.06     -62.10    -0.06
 12   0.1506  -2980.05 (  -0.34)    -61.56 (   0.48)
 13   0.1666  -3387.48     0.14     -64.11     0.12
 14   0.1694  -3458.09    -0.06     -64.52    -0.03
 15   0.1696  -3462.68    -0.08     -64.46     0.02
 16   0.1721  -3526.93    -0.07     -64.74    -0.01
 17   0.3117  -6440.88    -0.06     -41.59    -0.09
 18   0.3333  -6677.42     0.13     -32.96    -0.10
 19   0.8873   4661.39    -0.09     -33.81     0.04
 20   0.8901   4687.10     0.03     -35.87    -0.15
 21   0.9639   4877.49    -0.05     -86.25     0.13
 22   0.9748   4824.04    -0.03     -93.52     0.12
 23   1.0513   3908.81    -0.01    -138.95    -0.00
 24   1.0622   3710.75    -0.01    -144.24     0.04
 25   1.2151     74.08    -0.07    -175.58     0.16
 26   1.2259   -184.14    -0.02    -174.57     0.02
 27   1.3026  -1683.09    -0.02    -154.97     0.06
 28   1.3054  -1724.00    -0.26    -154.06    -0.09
 29   1.3658  -2280.57     0.13    -127.94    -0.25
 30   1.4531  -1899.87     0.20     -84.71    -0.13
 31   2.3377   2510.79     0.08    -250.53    -0.04
 32   3.9483  18699.48    -0.00    -403.72     0.10
 33   3.9647  18687.10     0.11    -415.74    -0.04
 34   4.0548  17804.91     0.03    -473.08    -0.03
 35   4.0683  17566.70    -0.03    -479.98    -0.06
 36   4.0684  17564.21    -0.11    -479.87     0.09

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.

13SG101    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.914    46.923    46.905
ecceobj         0.063     0.064     0.063
incobj          1.778     1.778     1.778
qmin           43.201    43.178    43.164
qmax           50.291    50.293    50.217
amean          46.617    46.626    46.597
amin           46.240    46.256    46.213
amax           47.023    47.017    47.001
emean           0.058     0.058     0.058
emin            0.045     0.046     0.045
emax            0.070     0.070     0.069
imean           1.628     1.627     1.627
imin            1.283     1.283     1.283
imax            1.933     1.932     1.933
excite_mean     0.065     0.065     0.064
fracstop        1.000     1.000     1.000
cjmean          3.129     3.129     3.129

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       188.3     188.5     188.4
kozaiamp        180.0     180.0     180.0