Orbit Fit and Astrometric record for 13TV227

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: 13TV227   
# Created Fri Dec  3 02:12:07 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     23 observations of     23
# Arc:   5.15y
# First observation: 2013/10/04
#  Last observation: 2018/11/27
# Chi-squared of fit:     8.27 DOF:     40 RMS:  0.11
# Min/Max residuals:    -0.21    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.819316E-05  3.182658E-02 -1.705921E-07 -6.282629E-04  2.904951E-02 -4.962034E-03
# Covariance matrix:
  2.7538E-13 -1.7210E-13 -2.9277E-15  1.9808E-15  6.3420E-14 -7.1818E-13
 -1.7210E-13  2.4329E-13  1.5447E-15 -3.7469E-15  6.8178E-14  1.4073E-12
 -2.9277E-15  1.5447E-15  1.7408E-13 -4.8661E-14 -5.9155E-15  5.7354E-15
  1.9808E-15 -3.7469E-15 -4.8661E-14  2.1307E-14 -1.4670E-15 -2.3948E-14
  6.3420E-14  6.8178E-14 -5.9155E-15 -1.4670E-15  3.3389E-13  6.3070E-13
 -7.1818E-13  1.4073E-12  5.7354E-15 -2.3948E-14  6.3070E-13  9.0458E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.028505    9.913560   -0.014696   -0.122290   -0.992747  2456569.658128
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          312.76912 +/-     0.014
Argument of Peri:      326.35025 +/-     0.023
Long of Asc Node:      109.18132 +/-     0.002
Inclination:             6.91946 +/-     0.000
Eccentricity:         0.18647073 +/-    0.0001
Semi-Major Axis:     39.52768998 +/-    0.0038
Time of Perihelion: 2468479.4686 +/-      12.0
Perihelion:          32.15693261 +/-    0.0049
Aphelion:            46.89844734 +/-    0.0059
Period (y)              248.5194 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.63741075 +/-    0.0007
Ecliptic Y            6.07171524 +/-    0.0001
Ecliptic Z           -4.21225767 +/-    0.0001
Ecliptic XDOT        -0.00098694 +/-    0.0000
Ecliptic YDOT         0.00287228 +/-    0.0000
Ecliptic ZDOT        -0.00000140 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.41702548 +/-    0.0007
Geocenter to KBO     34.42412321 +/-    0.0007
# Hcoef:  8.00

The following table shows the complete astrometric record for 13TV227. 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 (13TV227) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.15735  00 47 28.127  -02 32 20.19  24.4g 13TV227   W84  C~52Re      
2013 10  13.16464  00 46 41.191  -02 37 09.65  23.1i 13TV227   W84  C~52Re      
2013 10  13.16777  00 46 41.177  -02 37 09.75  23.2z 13TV227   W84  C~52Re      
2013 11  23.14048  00 43 43.246  -02 51 36.84  23.8r 13TV227   W84  C~52Re      
2013 11  23.14185  00 43 43.233  -02 51 36.74  22.8i 13TV227   W84  C~52Re      
2014 10  02.29957  00 54 27.131  -01 50 00.62  22.5i 13TV227   W84  C~52Re      
2014 10  02.30094  00 54 27.120  -01 50 00.70  22.8r 13TV227   W84  C~52Re      
2014 11  13.12828  00 51 02.996  -02 08 46.21  23.5r 13TV227   W84  C~52Re      
2014 11  16.06277  00 50 51.648  -02 09 32.58  22.7i 13TV227   W84  C~52Re      
2014 11  27.06545  00 50 14.950  -02 11 36.01  22.8z 13TV227   W84  C~52Re      
2015 09  04.27280  01 03 32.948  -00 52 14.14  23.4i 13TV227   W84  C~52Re      
2015 10  17.15136  01 00 01.588  -01 16 19.49  23.7r 13TV227   W84  C~52Re      
2015 12  05.08968  00 56 39.759  -01 31 22.35  23.5r 13TV227   W84  C~52Re      
2016 08  16.39950  01 11 25.166  -00 01 24.10  23.0i 13TV227   W84  C~52Re      
2016 11  06.17938  01 05 11.435  -00 43 39.98  23.4i 13TV227   W84  C~52Re      
2016 11  06.20525  01 05 11.296  -00 43 40.43  23.9r 13TV227   W84  C~52Re      
2017 08  28.29366  01 17 46.625  +00 35 18.33  23.2i 13TV227   W84  C~52Re      
2017 09  14.31818  01 16 39.230  +00 26 13.67  23.4z 13TV227   W84  C~52Re      
2017 09  18.28030  01 16 20.943  +00 23 59.08  23.5r 13TV227   W84  C~52Re      
2017 09  24.25613  01 15 51.908  +00 20 33.65  23.2z 13TV227   W84  C~52Re      
2018 09  14.35386  01 23 42.086  +01 09 06.79  23.5r 13TV227   W84  C~52Re      
2018 09  14.35523  01 23 42.086  +01 09 06.67  23.4i 13TV227   W84  C~52Re      
2018 11  27.10414  01 17 41.556  +00 35 12.63  24.0g 13TV227   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    -0.15       0.00    -0.10
     2   0.0247      0.00     0.02       0.00     0.01
     3   0.0247      0.00     0.05       0.00     0.01
     4   0.1368      0.00     0.01       0.00     0.03
     5   0.1369      0.00    -0.12       0.00     0.15
     6   0.9942      0.00     0.12       0.00     0.04
     7   0.9942      0.00     0.06       0.00     0.01
     8   1.1087      0.00    -0.03       0.00    -0.06
     9   1.1168      0.00     0.12       0.00    -0.05
    10   1.1469      0.00    -0.05       0.00     0.20
    11   1.9168      0.00     0.04       0.00     0.12
    12   2.0342      0.00     0.23       0.00    -0.10
    13   2.1682      0.00    -0.02       0.00    -0.19
    14   2.8672      0.00    -0.18       0.00    -0.03
    15   3.0911      0.00     0.04       0.00    -0.10
    16   3.0912      0.00    -0.21       0.00     0.02
    17   3.8991      0.00    -0.12       0.00    -0.15
    18   3.9457      0.00     0.04       0.00     0.10
    19   3.9565      0.00     0.17       0.00     0.07
    20   3.9729      0.00     0.11       0.00    -0.14
    21   4.9451      0.00    -0.06       0.00     0.09
    22   4.9451      0.00     0.03       0.00     0.02
    23   5.1470      0.00    -0.00       0.00     0.11

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.

13TV227    quality flag:3

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

axisobj        39.732    39.732    39.732
ecceobj         0.187     0.187     0.187
incobj          6.919     6.919     6.919
qmin           31.717    31.670    31.778
qmax           47.927    47.902    47.886
amean          39.457    39.457    39.457
amin           38.917    38.917    38.930
amax           40.058    40.062    40.039
emean           0.179     0.179     0.178
emin            0.160     0.160     0.161
emax            0.198     0.198     0.197
imean           5.337     5.249     5.154
imin            4.499     4.507     4.434
imax            6.404     6.364     6.042
excite_mean     0.202     0.201     0.200
fracstop        1.000     1.000     1.000
cjmean          3.006     3.006     3.007

libcent 0       179.3     179.1     182.9
libamp  0       128.8     128.3     127.9
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       194.7     196.0     189.8
kozaiamp        179.9     180.0     180.0