Orbit Fit and Astrometric record for 13SY99

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: 13SY99    
# Created Sat Oct 21 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   33
# Arc:   3.16y
# First observation: 2013/09/05
#  Last observation: 2016/11/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000007   0.017135  -0.000006   0.001198   0.016724   0.000000
# Chi-squared of fit:    13.85 DOF:   58 RMS:  0.12
# Min/Max residuals:    -0.25    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.661328E-05  1.693271E-02 -7.963100E-07  1.179756E-03  1.666984E-02 -7.601569E-03
# Covariance matrix:
  1.9397E-13  1.1875E-13 -1.9606E-15  1.2601E-14  2.4805E-13  3.8217E-12
  1.1875E-13  4.3845E-13 -5.1767E-15  3.3676E-14  4.2514E-13  9.9668E-12
 -1.9606E-15 -5.1767E-15  8.3903E-14 -3.5116E-14 -5.4217E-15 -1.2673E-13
  1.2601E-14  3.3676E-14 -3.5116E-14  3.4080E-14  3.5013E-14  8.2424E-13
  2.4805E-13  4.2514E-13 -5.4217E-15  3.5013E-14  5.9142E-13  1.0517E-11
  3.8217E-12  9.9668E-12 -1.2673E-13  8.2424E-13  1.0517E-11  2.4406E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.389036   11.090105    0.479817   -0.021474   -0.887598  2456540.930718
# Heliocentric elements and errors
Epoch:              2456540.5000  =  2013/09/05
Mean Anomaly:          359.32934 +/-     0.019
Argument of Peri:       32.22691 +/-     0.056
Long of Asc Node:       29.51178 +/-     0.002
Inclination:             4.22519 +/-     0.001
Eccentricity:         0.93677830 +/-    0.0012
Semi-Major Axis:    789.37315930 +/-   14.7930
Time of Perihelion: 2471631.5235 +/-       5.7
Perihelion:          49.90551293 +/-    1.3422
Aphelion:          1528.84080567 +/-   28.6670
Period (y)            22178.4778 +/-    623.44
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           59.81415700 +/-    0.0027
Ecliptic Y           11.23893911 +/-    0.0005
Ecliptic Z           -1.45419500 +/-    0.0001
Ecliptic XDOT        -0.00176132 +/-    0.0000
Ecliptic YDOT         0.00248880 +/-    0.0000
Ecliptic ZDOT         0.00022411 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   60.87825403 +/-    0.0027
Geocenter to KBO     59.98857261 +/-    0.0028
# Hcoef:  6.78

The following table shows the complete astrometric record for 13SY99. 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 (13SY99) followed by the observatory code and reference code for the source of the astrometry.

2013 09  05.42994  00 42 57.494  +03 06 35.44  24.6r 13SY99    568  C~2Cgv      
2013 09  05.46880  00 42 57.411  +03 06 34.37  24.7r 13SY99    568  C~2Cgv      
2013 09  29.36094  00 41 48.493  +02 59 23.40  25.0r 13SY99    568  C~2Cgv      
2013 09  29.39977  00 41 48.384  +02 59 22.64  24.5r 13SY99    568  C~2Cgv      
2013 09  29.44359  00 41 48.244  +02 59 22.30  24.1r 13SY99    568  C~2Cgv      
2013 09  29.44819  00 41 48.219  +02 59 21.58  24.4r 13SY99    568  C~2Cgv      
2013 09  29.45297  00 41 48.231  +02 59 21.73  24.2r 13SY99    568  C~2Cgv      
2013 09  29.45785  00 41 48.222  +02 59 21.40  24.0r 13SY99    568  C~2Cgv      
2013 09  29.46414  00 41 48.192  +02 59 21.22  24.0r 13SY99    568  C~2Cgv      
2013 09  29.46913  00 41 48.155  +02 59 21.27  24.3r 13SY99    568  C~2Cgv      
2013 09  29.50184  00 41 48.071  +02 59 20.69        13SY99    568  C~2Cgv      
2013 10  05.35958  00 41 30.094  +02 57 30.39        13SY99    568  C~2Cgv      
2013 10  06.36797  00 41 27.006  +02 57 11.33  24.3r 13SY99    568  C~2Cgv      
2013 10  06.43244  00 41 26.801  +02 57 10.12        13SY99    568  C~2Cgv      
2013 10  07.35479  00 41 23.974  +02 56 52.98  23.7r 13SY99    568  C~2Cgv      
2013 10  09.49249  00 41 17.401  +02 56 13.38  24.0r 13SY99    568  C~2Cgv      
2013 11  27.29243  00 39 15.583  +02 44 29.24  24.5r 13SY99    568  C~2Cgv      
2013 11  27.33867  00 39 15.514  +02 44 28.70  24.6r 13SY99    568  C~2Cgv      
2013 12  05.24094  00 39 05.012  +02 43 37.85  24.6r 13SY99    568  C~2Cgv      
2014 12  17.28612  00 42 22.061  +03 09 24.05  24.3r 13SY99    568  C~2Cgv      
2015 01  17.25897  00 42 38.186  +03 12 13.76  24.7r 13SY99    568  C~2Cgv      
2015 10  09.40506  00 48 21.533  +03 50 04.59  24.6w 13SY99    568  C~2Cgv      
2015 10  09.44841  00 48 21.396  +03 50 03.69  24.9w 13SY99    568  C~2Cgv      
2015 10  09.49091  00 48 21.254  +03 50 02.90  24.5w 13SY99    568  C~2Cgv      
2015 11  17.26167  00 46 33.474  +03 39 31.74        13SY99    568  C~2Cgv      
2015 12  07.39899  00 45 59.672  +03 36 35.37  24.7w 13SY99    568  C~2Cgv      
2015 12  31.22796  00 45 50.095  +03 36 24.35  24.9w 13SY99    568  C~2Cgv      
2016 07  07.58727  00 54 45.567  +04 35 04.09  24.8w 13SY99    568  C~2Cgv      
2016 07  08.56666  00 54 46.071  +04 35 06.70  24.7w 13SY99    568  C~2Cgv      
2016 07  08.57071  00 54 46.069  +04 35 06.83  24.7w 13SY99    568  C~2Cgv      
2016 07  08.57475  00 54 46.063  +04 35 06.65  24.9w 13SY99    568  C~2Cgv      
2016 11  04.31217  00 50 38.082  +04 09 35.20  24.7w 13SY99    568  C~2Cgv      
2016 11  04.37124  00 50 37.921  +04 09 34.41  24.5w 13SY99    568  C~2Cgv      

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    -0.11       0.00     0.40
  2   0.0001     -1.56     0.01      -0.50    -0.12
  3   0.0655  -1120.21    -0.15       6.53     0.10
  4   0.0656  -1122.01     0.00       6.47    -0.00
  5   0.0657  -1124.07 (   0.14)      6.98 (   0.47)
  6   0.0658  -1124.70    -0.25       6.46    -0.05
  7   0.0658  -1124.47     0.21       6.53     0.01
  8   0.0658  -1124.73     0.21       6.28    -0.25
  9   0.0658  -1125.21     0.04       6.29    -0.24
 10   0.0658  -1125.70    -0.20       6.55     0.02
 11   0.0659  -1127.08     0.06       6.51    -0.05
 12   0.0819  -1418.08    -0.04      10.35     0.04
 13   0.0847  -1468.11     0.06      10.91    -0.15
 14   0.0849  -1471.41     0.01      10.99    -0.13
 15   0.0874  -1517.09     0.07      11.79    -0.01
 16   0.0933  -1623.20    -0.01      13.87     0.32
 17   0.2269  -3578.55    -0.01      80.41     0.15
 18   0.2270  -3579.71    -0.01      80.32    -0.04
 19   0.2486  -3744.46     0.05      95.17    -0.02
 20   1.2809   -422.53     0.13     362.69     0.03
 21   1.3657   -133.89    -0.09     424.45     0.09
 22   2.0916   5486.49     0.12     508.80     0.00
 23   2.0918   5484.25     0.10     508.77    -0.08
 24   2.0919   5481.98     0.01     508.87    -0.03
 25   2.1980   3749.44     0.05     556.52     0.02
 26   2.2532   3214.56    -0.17     591.53     0.03
 27   2.3184   3078.23    -0.07     637.34     0.03
 28   2.8368  11840.69    -0.05     763.59    -0.03
 29   2.8395  11848.67     0.07     763.08    -0.04
 30   2.8395  11848.70     0.06     763.21     0.09
 31   2.8395  11848.54    -0.12     763.08    -0.04
 32   3.1646   7826.75    -0.03     791.91    -0.05
 33   3.1648   7824.22     0.04     792.12     0.05

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.

13SY99    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       872.700   927.933   823.947
ecceobj         0.943     0.946     0.939
incobj          4.214     4.214     4.214
qmin           42.131    41.766    42.720
qmax         1794.115  1830.178  1615.735
amean         748.349   779.938   697.854
amin          676.490   703.892   632.662
amax          922.054   940.023   832.888
emean           0.933     0.936     0.928
emin            0.921     0.924     0.917
emax            0.946     0.947     0.940
imean           4.189     4.189     4.188
imin            4.000     3.992     4.012
imax            4.415     4.425     4.395
excite_mean     0.936     0.939     0.931
fracstop        1.000     1.000     1.000
cjmean          3.614     3.613     3.616

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        34.3      34.4      34.3
kozaiamp          4.6       4.7       4.6