Orbit Fit and Astrometric record for 13TA229

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: 13TA229   
# Created Thu Dec  9 02:12:06 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     12 observations of     12
# Arc:   5.07y
# First observation: 2013/10/13
#  Last observation: 2018/11/06
# Chi-squared of fit:     3.46 DOF:     18 RMS:  0.09
# Min/Max residuals:    -0.24    0.14
# Exact a, adot, b, bdot, g, gdot:
  1.521414E-05  2.488654E-02 -5.903988E-06 -1.070011E-02  2.629631E-02 -3.050292E-03
# Covariance matrix:
  5.6324E-13 -4.0355E-13 -5.7179E-14  1.1707E-13  1.9367E-13 -2.2082E-12
 -4.0355E-13  8.3261E-13  1.5492E-13 -3.2268E-13 -3.6442E-13  6.0953E-12
 -5.7179E-14  1.5492E-13  4.7862E-13 -1.7181E-13 -6.9750E-14  1.1865E-12
  1.1707E-13 -3.2268E-13 -1.7181E-13  1.6775E-13  1.2481E-13 -2.4872E-12
  1.9367E-13 -3.6442E-13 -6.9750E-14  1.2481E-13  7.6175E-13 -2.3246E-12
 -2.2082E-12  6.0953E-12  1.1865E-12 -2.4872E-12 -2.3246E-12  4.7009E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.229601    5.366135   -0.245717   -0.071180   -0.964054  2456578.641138
# Heliocentric elements and errors
Epoch:              2456578.5000  =  2013/10/13
Mean Anomaly:          305.72753 +/-     0.067
Argument of Peri:      257.31942 +/-     0.102
Long of Asc Node:      176.21620 +/-     0.000
Inclination:            23.56838 +/-     0.000
Eccentricity:         0.12498316 +/-    0.0002
Semi-Major Axis:     41.54955611 +/-    0.0065
Time of Perihelion: 2471326.2265 +/-      26.6
Perihelion:          36.35656123 +/-    0.0100
Aphelion:            46.74255098 +/-    0.0110
Period (y)              267.8291 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.69726584 +/-    0.0013
Ecliptic Y            3.88474696 +/-    0.0001
Ecliptic Z           -2.80496448 +/-    0.0001
Ecliptic XDOT        -0.00064562 +/-    0.0000
Ecliptic YDOT         0.00254097 +/-    0.0000
Ecliptic ZDOT        -0.00108745 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.99285509 +/-    0.0012
Geocenter to KBO     38.02825887 +/-    0.0013
# Hcoef:  8.04

The following table shows the complete astrometric record for 13TA229. 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 (13TA229) followed by the observatory code and reference code for the source of the astrometry.

2013 10  13.14036  00 26 24.320  -01 45 06.23  23.0i 13TA229   W84  C~52Rg      
2013 11  23.11061  00 23 55.751  -02 02 38.60  24.3r 13TA229   W84  C~52Rg      
2013 11  23.11202  00 23 55.749  -02 02 38.68  24.0i 13TA229   W84  C~52Rg      
2016 08  26.31588  00 48 37.771  -01 15 34.71  23.1i 13TA229   W84  C~52Rg      
2016 09  09.27780  00 47 44.882  -01 23 55.77  23.6r 13TA229   W84  C~52Rg      
2016 10  01.20809  00 46 06.050  -01 37 38.12  23.6r 13TA229   W84  C~52Rg      
2017 08  28.35853  00 54 49.767  -01 16 13.31  24.5r 13TA229   W84  C~52Rg      
2017 08  28.35991  00 54 49.765  -01 16 13.65  23.6i 13TA229   W84  C~52Rg      
2017 09  24.28696  00 52 59.414  -01 32 50.17  23.8r 13TA229   W84  C~52Rg      
2018 10  10.27061  00 58 07.093  -01 42 06.67  24.0r 13TA229   W84  C~52Rg      
2018 10  10.27199  00 58 07.083  -01 42 07.00  24.2i 13TA229   W84  C~52Rg      
2018 11  06.20373  00 56 04.828  -01 56 05.00  23.5r 13TA229   W84  C~52Rg      

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    -0.00       0.00    -0.12
     2   0.1122      0.00    -0.01       0.00     0.09
     3   0.1122      0.00     0.01       0.00     0.03
     4   2.8697      0.00     0.03       0.00     0.08
     5   2.9080      0.00     0.01       0.00     0.02
     6   2.9680      0.00     0.06       0.00    -0.04
     7   3.8747      0.00    -0.04       0.00     0.05
     8   3.8747      0.00     0.01       0.00    -0.24
     9   3.9484      0.00    -0.05       0.00     0.14
    10   4.9915      0.00     0.12       0.00     0.12
    11   4.9915      0.00     0.08       0.00    -0.16
    12   5.0652      0.00    -0.15       0.00     0.06

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.

13TA229    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.756    41.756    41.756
ecceobj         0.126     0.126     0.126
incobj         23.496    23.496    23.496
qmin           35.778    35.825    35.825
qmax           47.537    47.532    47.549
amean          41.543    41.543    41.543
amin           41.208    41.219    41.211
amax           41.910    41.907    41.894
emean           0.119     0.119     0.119
emin            0.103     0.103     0.104
emax            0.135     0.135     0.135
imean          23.426    23.426    23.426
imin           22.873    22.887    22.876
imax           23.961    23.966    23.946
excite_mean     0.415     0.415     0.415
fracstop        1.000     1.000     1.000
cjmean          2.865     2.865     2.865

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       182.0     182.1     182.1
kozaiamp        180.0     180.0     180.0