Orbit Fit and Astrometric record for 13SY111

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: 13SY111   
# Created Fri Dec  3 02:12:00 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     11 observations of     11
# Arc:   5.12y
# First observation: 2013/09/24
#  Last observation: 2018/11/06
# Chi-squared of fit:     8.58 DOF:     16 RMS:  0.16
# Min/Max residuals:    -0.32    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.210445E-05  1.854230E-02  7.877724E-06  1.055221E-02  2.224060E-02 -6.471386E-03
# Covariance matrix:
  3.5223E-13 -2.0220E-13  4.6985E-14 -8.4221E-14 -1.5730E-14 -1.4241E-12
 -2.0220E-13  3.1655E-13 -1.0889E-13  1.9099E-13  4.8646E-14  3.2278E-12
  4.6985E-14 -1.0889E-13  3.6842E-13 -1.4965E-13 -1.8536E-13 -1.1619E-12
 -8.4221E-14  1.9099E-13 -1.4965E-13  1.6939E-13  6.4673E-15  2.2276E-12
 -1.5730E-14  4.8646E-14 -1.8536E-13  6.4673E-15  1.0082E-12 -3.2077E-14
 -1.4241E-12  3.2278E-12 -1.1619E-12  2.2276E-12 -3.2077E-14  3.7731E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -35.817551  -36.758850   -0.612635   -0.465068   -0.644571  2456559.587258
# Heliocentric elements and errors
Epoch:              2456560.5000  =  2013/09/25
Mean Anomaly:          315.66515 +/-     0.020
Argument of Peri:       22.73198 +/-     0.032
Long of Asc Node:        8.89005 +/-     0.001
Inclination:            45.11309 +/-     0.000
Eccentricity:         0.31476069 +/-    0.0003
Semi-Major Axis:     54.14784126 +/-    0.0145
Time of Perihelion: 2474483.5909 +/-      51.9
Perihelion:          37.10422945 +/-    0.0185
Aphelion:            71.19145307 +/-    0.0247
Period (y)              398.4556 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.21359466 +/-    0.0013
Ecliptic Y          -21.80129724 +/-    0.0010
Ecliptic Z          -26.31223202 +/-    0.0012
Ecliptic XDOT         0.00145133 +/-    0.0000
Ecliptic YDOT         0.00175910 +/-    0.0000
Ecliptic ZDOT         0.00151967 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.61259996 +/-    0.0012
Geocenter to KBO     44.96305936 +/-    0.0020
# Hcoef:  7.43

The following table shows the complete astrometric record for 13SY111. 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 (13SY111) followed by the observatory code and reference code for the source of the astrometry.

2013 09  24.08648  22 47 33.914  -46 52 54.85  24.6r 13SY111   W84  C~52RT      
2013 09  24.08924  22 47 33.854  -46 52 54.89  24.0i 13SY111   W84  C~52RT      
2013 12  07.07756  22 44 07.200  -46 06 04.47  23.6r 13SY111   W84  C~52RT      
2013 12  07.07894  22 44 07.207  -46 06 04.43  24.2i 13SY111   W84  C~52RT      
2014 09  15.16437  22 52 17.411  -45 50 46.91  23.4r 13SY111   W84  C~52RT      
2015 08  18.25472  22 58 53.283  -44 39 19.69  23.7r 13SY111   W84  C~52RT      
2016 10  02.14139  22 57 51.666  -43 41 05.42  23.9i 13SY111   W84  C~52RT      
2016 10  02.14276  22 57 51.645  -43 41 05.56  24.6r 13SY111   W84  C~52RT      
2016 10  02.14412  22 57 51.669  -43 41 05.48  24.6g 13SY111   W84  C~52RT      
2018 10  27.09445  23 02 55.379  -41 19 49.72  23.7i 13SY111   W84  C~52RT      
2018 11  06.14056  23 02 22.439  -41 14 02.87  23.1r 13SY111   W84  C~52RT      

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     0.34       0.00     0.04
     2   0.0000      0.00    -0.31       0.00    -0.02
     3   0.2026      0.00    -0.10       0.00    -0.02
     4   0.2026      0.00    -0.02       0.00    -0.07
     5   0.9749      0.00     0.29       0.00     0.17
     6   1.8978      0.00     0.00       0.00    -0.07
     7   3.0227      0.00    -0.12       0.00     0.09
     8   3.0227      0.00    -0.32       0.00    -0.06
     9   3.0227      0.00     0.16       0.00     0.00
    10   5.0897      0.00     0.13       0.00    -0.02
    11   5.1172      0.00     0.01       0.00    -0.00

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.

13SY111    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        54.374    54.374    54.375
ecceobj         0.317     0.317     0.317
incobj         45.062    45.062    45.062
qmin           35.562    35.547    35.543
qmax           73.882    73.914    73.872
amean          54.336    54.334    54.336
amin           53.793    53.786    53.796
amax           54.999    55.016    55.027
emean           0.323     0.323     0.323
emin            0.304     0.304     0.303
emax            0.344     0.344     0.344
imean          45.149    45.151    45.149
imin           44.717    44.715    44.716
imax           45.635    45.617    45.604
excite_mean     0.779     0.779     0.779
fracstop        1.000     1.000     1.000
cjmean          2.348     2.348     2.348

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       127.1     127.0     127.1
kozaiamp        107.6     107.5     107.4