Orbit Fit and Astrometric record for 13TA228

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: 13TA228   
# Created Thu Dec  9 02:12:05 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     18 observations of     18
# Arc:   5.15y
# First observation: 2013/10/04
#  Last observation: 2018/11/28
# Chi-squared of fit:     5.88 DOF:     30 RMS:  0.10
# Min/Max residuals:    -0.20    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.650198E-05  2.582920E-02  1.563733E-06  2.485572E-03  2.513541E-02 -3.242933E-03
# Covariance matrix:
  4.8172E-13 -2.0641E-13  2.6820E-15 -1.4754E-14  3.0459E-13 -1.2052E-12
 -2.0641E-13  2.9895E-13 -1.9285E-14  3.0197E-14  7.4175E-14  2.3725E-12
  2.6820E-15 -1.9285E-14  2.4251E-13 -6.7942E-14 -2.0123E-14 -1.6914E-13
 -1.4754E-14  3.0197E-14 -6.7942E-14  3.0296E-14  9.9882E-15  2.6350E-13
  3.0459E-13  7.4175E-14 -2.0123E-14  9.9882E-15  7.1958E-13  6.9078E-13
 -1.2052E-12  2.3725E-12 -1.6914E-13  2.6350E-13  6.9078E-13  2.0696E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -10.048885   21.827934    0.191510   -0.171214   -0.966802  2456569.693798
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          319.95534 +/-     0.031
Argument of Peri:      354.23402 +/-     0.051
Long of Asc Node:       82.24528 +/-     0.002
Inclination:            11.21379 +/-     0.000
Eccentricity:         0.17555194 +/-    0.0002
Semi-Major Axis:     46.24123014 +/-    0.0075
Time of Perihelion: 2469346.1967 +/-      26.9
Perihelion:          38.12349268 +/-    0.0097
Aphelion:            54.35896760 +/-    0.0116
Period (y)              314.4505 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.34756142 +/-    0.0012
Ecliptic Y           14.75610733 +/-    0.0005
Ecliptic Z           -6.94189992 +/-    0.0002
Ecliptic XDOT        -0.00133128 +/-    0.0000
Ecliptic YDOT         0.00249859 +/-    0.0000
Ecliptic ZDOT         0.00032836 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.75266803 +/-    0.0011
Geocenter to KBO     39.78462454 +/-    0.0013
# Hcoef:  7.36

The following table shows the complete astrometric record for 13TA228. 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 (13TA228) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.19302  01 35 39.212  -00 49 42.11  24.3g 13TA228   W84  C~52Re      
2013 11  08.22418  01 32 58.263  -01 03 33.68  23.2r 13TA228   W84  C~52Re      
2013 11  23.18237  01 31 58.544  -01 06 53.76  23.1i 13TA228   W84  C~52Re      
2013 11  23.18375  01 31 58.523  -01 06 53.40  23.1z 13TA228   W84  C~52Re      
2014 10  01.33516  01 41 11.491  -00 07 23.83  23.2g 13TA228   W84  C~52Re      
2014 10  29.25418  01 39 02.066  -00 19 27.01  23.6r 13TA228   W84  C~52Re      
2014 12  16.10805  01 36 07.950  -00 27 35.35  22.6z 13TA228   W84  C~52Re      
2015 11  01.20148  01 44 09.323  +00 20 36.72  23.2i 13TA228   W84  C~52Re      
2015 11  06.20165  01 43 46.338  +00 18 55.20  23.3r 13TA228   W84  C~52Re      
2016 10  23.19963  01 50 10.086  +01 05 02.51  23.8r 13TA228   W84  C~52Re      
2016 10  28.17428  01 49 46.421  +01 03 05.56  23.1i 13TA228   W84  C~52Re      
2016 10  28.17565  01 49 46.422  +01 03 05.65  24.4g 13TA228   W84  C~52Re      
2017 09  14.30679  01 58 23.177  +02 04 04.86  23.0r 13TA228   W84  C~52Re      
2017 10  29.26071  01 55 06.305  +01 44 17.26  23.6i 13TA228   W84  C~52Re      
2017 11  16.15848  01 53 44.096  +01 38 32.32  23.6r 13TA228   W84  C~52Re      
2017 11  16.15985  01 53 44.100  +01 38 32.19  23.6g 13TA228   W84  C~52Re      
2018 10  20.22873  02 01 17.221  +02 29 44.91  22.4z 13TA228   W84  C~52Re      
2018 11  28.04046  01 58 21.231  +02 17 38.42  24.5g 13TA228   W84  C~52Re      

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    -0.05       0.00    -0.02
     2   0.0959      0.00    -0.14       0.00    -0.11
     3   0.1369      0.00     0.25       0.00    -0.20
     4   0.1369      0.00     0.01       0.00     0.17
     5   0.9915      0.00     0.05       0.00     0.14
     6   1.0679      0.00    -0.03       0.00     0.04
     7   1.1989      0.00    -0.06       0.00    -0.10
     8   2.0753      0.00     0.05       0.00     0.04
     9   2.0890      0.00     0.01       0.00     0.09
    10   3.0527      0.00    -0.11       0.00    -0.10
    11   3.0663      0.00    -0.06       0.00     0.00
    12   3.0663      0.00     0.05       0.00     0.12
    13   3.9456      0.00     0.07       0.00     0.12
    14   4.0686      0.00     0.04       0.00    -0.10
    15   4.1176      0.00    -0.11       0.00     0.09
    16   4.1176      0.00     0.04       0.00    -0.02
    17   5.0432      0.00    -0.08       0.00    -0.08
    18   5.1495      0.00     0.17       0.00    -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.

13TA228    quality flag:2

Type:         6:3EII CLASSICAL CLASSICAL

axisobj        46.510    46.510    46.510
ecceobj         0.177     0.177     0.177
incobj         11.218    11.218    11.218
qmin           37.109    37.099    37.124
qmax           55.551    55.548    55.520
amean          46.123    46.123    46.124
amin           45.733    45.729    45.727
amax           46.589    46.582    46.594
emean           0.179     0.179     0.179
emin            0.164     0.164     0.164
emax            0.193     0.193     0.192
imean           9.464     9.464     9.465
imin            8.831     8.830     8.829
imax           10.110    10.107    10.108
excite_mean     0.243     0.243     0.243
fracstop        1.000     1.000     1.000
cjmean          3.055     3.055     3.055

libcent 0       130.7    -180.0    -180.0
libamp  0       101.1    -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       174.7     174.7     174.9
kozaiamp        180.0     180.0     180.0