Orbit Fit and Astrometric record for 13TS229

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: 13TS229   
# Created Tue Apr  1 01:09:50 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     11 observations of     11
# Arc:   5.04y
# First observation: 2013/10/04
#  Last observation: 2018/10/18
# Chi-squared of fit:     2.43 DOF:     16 RMS:  0.08
# Min/Max residuals:    -0.17    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.485333E-05  2.163950E-02 -9.776232E-07  2.931399E-05  2.304622E-02 -1.598048E-03
# Covariance matrix:
  5.5061E-13 -1.9993E-13 -1.2854E-15  7.3265E-17  3.2070E-13 -7.1751E-13
 -1.9993E-13  4.7879E-13 -1.1468E-15  8.5408E-16  2.9346E-13  4.4752E-12
 -1.2854E-15 -1.1468E-15  4.0076E-13 -9.9830E-14 -5.4671E-15 -1.5228E-14
  7.3265E-17  8.5408E-16 -9.9830E-14  3.7147E-14  1.3800E-15  9.2774E-15
  3.2070E-13  2.9346E-13 -5.4671E-15  1.3800E-15  1.3739E-12  3.8775E-12
 -7.1751E-13  4.4752E-12 -1.5228E-14  9.2774E-15  3.8775E-12  4.6040E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.193194    5.784848   -0.086622   -0.020648   -0.996388  2456569.655188
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          271.55436 +/-     0.143
Argument of Peri:       10.96419 +/-     0.118
Long of Asc Node:       91.86886 +/-     0.025
Inclination:             1.16939 +/-     0.000
Eccentricity:         0.07415522 +/-    0.0003
Semi-Major Axis:     44.23325972 +/-    0.0089
Time of Perihelion: 2482970.0058 +/-      49.3
Perihelion:          40.95313267 +/-    0.0160
Aphelion:            47.51338677 +/-    0.0167
Period (y)              294.1925 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           44.14301524 +/-    0.0022
Ecliptic Y            4.56228883 +/-    0.0002
Ecliptic Z           -0.90362695 +/-    0.0001
Ecliptic XDOT        -0.00045405 +/-    0.0000
Ecliptic YDOT         0.00253715 +/-    0.0000
Ecliptic ZDOT         0.00000757 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.38739742 +/-    0.0022
Geocenter to KBO     43.39114600 +/-    0.0022
# Hcoef:  7.16

The following table shows the complete astrometric record for 13TS229. 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 (13TS229) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.15441  00 23 07.922  +01 12 07.59  24.7g 13TS229   W84  C~55Nw      
2013 10  13.11927  00 22 30.434  +01 08 08.19  23.8i 13TS229   W84  C~55Nw      
2013 11  22.07399  00 20 18.541  +00 54 37.22  23.2i 13TS229   W84  C~55Nw      
2014 11  14.10274  00 25 09.782  +01 25 54.84  22.8z 13TS229   W84  C~55Nw      
2016 09  09.31362  00 38 32.482  +02 51 48.43  23.4i 13TS229   W84  C~55Nw      
2016 11  18.10069  00 34 02.031  +02 23 26.27  24.2r 13TS229   W84  C~55Nw      
2017 09  27.26238  00 41 56.122  +03 13 34.71  23.6i 13TS229   W84  C~55Nw      
2017 09  27.26376  00 41 56.116  +03 13 34.55  23.5r 13TS229   W84  C~55Nw      
2017 10  22.19535  00 40 10.542  +03 02 28.08  22.7z 13TS229   W84  C~55Nw      
2018 09  09.25958  00 47 47.462  +03 51 08.97  23.1z 13TS229   W84  C~55Nw      
2018 10  18.19480  00 45 05.064  +03 33 55.35  23.0i 13TS229   W84  C~55Nw      

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    -0.08       0.00     0.19
     2   0.0245      0.00     0.02       0.00    -0.05
     3   0.1339      0.00     0.04       0.00    -0.11
     4   1.1114      0.00     0.03       0.00    -0.07
     5   2.9327      0.00    -0.03       0.00     0.10
     6   3.1237      0.00     0.08       0.00     0.03
     7   3.9811      0.00    -0.03       0.00     0.07
     8   3.9811      0.00    -0.03       0.00    -0.05
     9   4.0494      0.00     0.05       0.00    -0.17
    10   4.9312      0.00     0.09       0.00     0.00
    11   5.0378      0.00    -0.08       0.00     0.08

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.

13TS229    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.482    44.482    44.482
ecceobj         0.072     0.072     0.072
incobj          1.170     1.170     1.170
qmin           39.908    39.901    39.905
qmax           48.866    48.852    48.852
amean          44.247    44.247    44.247
amin           43.884    43.889    43.887
amax           44.626    44.626    44.619
emean           0.079     0.079     0.079
emin            0.063     0.063     0.063
emax            0.095     0.095     0.095
imean           0.755     0.755     0.755
imin            0.152     0.151     0.151
imax            1.233     1.233     1.233
excite_mean     0.080     0.080     0.080
fracstop        1.000     1.000     1.000
cjmean          3.097     3.097     3.097

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       177.6     177.4     177.6
kozaiamp        180.0     179.9     179.9