Orbit Fit and Astrometric record for 13TE228

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: 13TE228   
# Created Sat Dec  4 02:12:10 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     12 observations of     12
# Arc:   5.14y
# First observation: 2013/10/04
#  Last observation: 2018/11/26
# Chi-squared of fit:     3.18 DOF:     18 RMS:  0.09
# Min/Max residuals:    -0.31    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.318092E-05  1.875154E-02 -4.203133E-07 -1.620375E-04  2.221352E-02 -3.920396E-04
# Covariance matrix:
  4.8243E-13 -3.0611E-13  1.0492E-15  5.3919E-16 -8.7432E-14 -2.4395E-12
 -3.0611E-13  1.7663E-12 -1.5222E-14  2.5338E-15 -4.5541E-13  2.2557E-11
  1.0492E-15 -1.5222E-14  4.4095E-13 -1.1646E-13  8.1690E-15 -2.0048E-13
  5.3919E-16  2.5338E-15 -1.1646E-13  4.2548E-14 -6.0894E-15  3.4840E-14
 -8.7432E-14 -4.5541E-13  8.1690E-15 -6.0894E-15  1.0317E-12 -6.2423E-12
 -2.4395E-12  2.2557E-11 -2.0048E-13  3.4840E-14 -6.2423E-12  2.9525E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.079578    4.783020   -0.105686   -0.173982   -0.979395  2456569.750808
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          188.23638 +/-     0.247
Argument of Peri:       81.26257 +/-     0.247
Long of Asc Node:       97.78091 +/-     0.004
Inclination:             9.87487 +/-     0.000
Eccentricity:         0.17107921 +/-    0.0003
Semi-Major Axis:     39.32087530 +/-    0.0070
Time of Perihelion: 2499540.1569 +/-      63.0
Perihelion:          32.59389121 +/-    0.0115
Aphelion:            46.04785938 +/-    0.0129
Period (y)              246.5716 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           45.15042518 +/-    0.0020
Ecliptic Y            3.88704061 +/-    0.0002
Ecliptic Z           -7.87884935 +/-    0.0004
Ecliptic XDOT        -0.00024977 +/-    0.0000
Ecliptic YDOT         0.00229748 +/-    0.0000
Ecliptic ZDOT        -0.00001107 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.99725445 +/-    0.0020
Geocenter to KBO     45.01768722 +/-    0.0021
# Hcoef:  6.69

The following table shows the complete astrometric record for 13TE228. 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 (13TE228) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.25003  00 33 36.779  -07 20 57.50  23.2r 13TE228   W84  C~52Rf      
2013 10  04.25141  00 33 36.771  -07 20 57.62  22.9i 13TE228   W84  C~52Rf      
2013 10  13.17223  00 32 59.520  -07 24 33.08  22.6z 13TE228   W84  C~52Rf      
2016 08  31.26758  00 47 44.041  -05 48 46.83  22.7i 13TE228   W84  C~52Rf      
2016 08  31.26898  00 47 44.039  -05 48 46.84  23.4r 13TE228   W84  C~52Rf      
2016 08  31.27447  00 47 44.012  -05 48 47.33  24.4g 13TE228   W84  C~52Rf      
2016 10  01.20950  00 45 43.928  -06 03 31.35  23.5r 13TE228   W84  C~52Rf      
2017 09  18.33988  00 50 35.806  -05 31 43.13  24.0g 13TE228   W84  C~52Rf      
2017 09  24.28144  00 50 11.736  -05 34 32.62  22.8i 13TE228   W84  C~52Rf      
2017 09  25.31665  00 50 07.469  -05 35 01.47  23.3r 13TE228   W84  C~52Rf      
2017 10  20.21124  00 48 23.296  -05 45 27.37  22.7z 13TE228   W84  C~52Rf      
2018 11  26.09227  00 50 15.262  -05 27 43.65  23.3r 13TE228   W84  C~52Rf      

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     0.01       0.00     0.07
     2   0.0000      0.00    -0.02       0.00    -0.01
     3   0.0244      0.00    -0.01       0.00     0.01
     4   2.9076      0.00     0.04       0.00    -0.00
     5   2.9076      0.00     0.08       0.00     0.03
     6   2.9077      0.00    -0.04       0.00    -0.31
     7   2.9924      0.00     0.00       0.00     0.01
     8   3.9564      0.00     0.13       0.00     0.01
     9   3.9727      0.00    -0.08       0.00    -0.02
    10   3.9755      0.00    -0.05       0.00     0.21
    11   4.0437      0.00     0.06       0.00     0.06
    12   5.1440      0.00    -0.04       0.00    -0.03

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.

13TE228    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.501    39.501    39.501
ecceobj         0.165     0.165     0.165
incobj          9.877     9.877     9.877
qmin           31.669    31.670    31.669
qmax           47.808    47.816    47.814
amean          39.457    39.457    39.457
amin           38.996    38.994    38.997
amax           39.972    39.972    39.972
emean           0.179     0.179     0.179
emin            0.161     0.161     0.161
emax            0.197     0.197     0.197
imean           7.943     7.943     7.943
imin            7.388     7.388     7.388
imax            8.619     8.619     8.619
excite_mean     0.226     0.226     0.226
fracstop        1.000     1.000     1.000
cjmean          2.994     2.994     2.994

libcent 0       178.8     178.8     178.9
libamp  0        94.6      94.6      94.6
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       174.2     174.1     174.2
kozaiamp        180.0     180.0     180.0