Orbit Fit and Astrometric record for 13TT187

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: 13TT187   
# Created Thu Dec  9 02:12:03 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:   5.05y
# First observation: 2013/10/03
#  Last observation: 2018/10/20
# Chi-squared of fit:    12.31 DOF:     68 RMS:  0.10
# Min/Max residuals:    -0.25    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.703357E-05  2.604823E-02 -5.001912E-06 -7.444468E-03  2.588404E-02  1.661744E-03
# Covariance matrix:
  2.1930E-13 -1.1246E-13 -1.4773E-14  2.0531E-14 -6.4256E-16 -5.9199E-13
 -1.1246E-13  1.8150E-13  2.9538E-14 -4.8023E-14  1.7818E-13  1.3816E-12
 -1.4773E-14  2.9538E-14  1.7421E-13 -5.6757E-14  2.3586E-14  2.5516E-13
  2.0531E-14 -4.8023E-14 -5.6757E-14  3.2057E-14 -4.7938E-14 -4.0839E-13
 -6.4256E-16  1.7818E-13  2.3586E-14 -4.7938E-14  3.8561E-13  1.3755E-12
 -5.9199E-13  1.3816E-12  2.5516E-13 -4.0839E-13  1.3755E-12  1.1752E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.086368   24.103357    0.245432   -0.186419   -0.951983  2456568.793368
# Heliocentric elements and errors
Epoch:              2456568.5000  =  2013/10/03
Mean Anomaly:           23.54442 +/-     0.049
Argument of Peri:      185.02934 +/-     0.064
Long of Asc Node:      170.61204 +/-     0.001
Inclination:            19.26626 +/-     0.000
Eccentricity:         0.11569127 +/-    0.0001
Semi-Major Axis:     44.15954879 +/-    0.0037
Time of Perihelion: 2449558.4537 +/-      14.5
Perihelion:          39.05067429 +/-    0.0047
Aphelion:            49.26842329 +/-    0.0053
Period (y)              293.4575 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.59223631 +/-    0.0008
Ecliptic Y           15.65816181 +/-    0.0004
Ecliptic Z           -7.42906712 +/-    0.0002
Ecliptic XDOT        -0.00111212 +/-    0.0000
Ecliptic YDOT         0.00252224 +/-    0.0000
Ecliptic ZDOT        -0.00080639 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.58754515 +/-    0.0008
Geocenter to KBO     38.63383513 +/-    0.0009
# Hcoef:  7.17

The following table shows the complete astrometric record for 13TT187. 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 (13TT187) followed by the observatory code and reference code for the source of the astrometry.

2013 10  03.29259  01 45 30.015  -00 58 28.15  24.1g 13TT187   W84  C~4yRE      
2013 10  03.29259  01 45 30.01   -00 58 28.1   24.0g 13TT187   W84  C~3clQ      
2013 11  04.06585  01 43 02.27   -01 14 47.6         13TT187   W84  C~3clQ      
2013 11  04.12882  01 43 01.98   -01 14 49.2   23.0r 13TT187   W84  C~3clQ      
2013 11  04.21126  01 43 01.60   -01 14 51.3         13TT187   W84  C~3clQ      
2014 10  01.33657  01 51 50.009  -00 48 32.95  22.6r 13TT187   W84  C~4yRE      
2014 10  01.33657  01 51 50.01   -00 48 33.0   22.6r 13TT187   W84  C~3clQ      
2014 10  02.33823  01 51 45.666  -00 49 08.07  23.4g 13TT187   W84  C~4yRE      
2014 10  02.33960  01 51 45.652  -00 49 07.86  23.2r 13TT187   W84  C~4yRE      
2014 10  02.33960  01 51 45.65   -00 49 07.9   23.3r 13TT187   W84  C~3clQ      
2016 01  12.06145  01 52 13.382  -01 03 41.47  22.9r 13TT187   W84  C~4yRE      
2016 01  12.06145  01 52 13.38   -01 03 41.5   23.0r 13TT187   W84  C~3clQ      
2016 01  12.06283  01 52 13.379  -01 03 41.64  24.0g 13TT187   W84  C~4yRE      
2016 09  09.39335  02 05 23.528  -00 18 55.20  23.0i 13TT187   W84  C~4yRE      
2016 09  09.39473  02 05 23.537  -00 18 55.38  23.7g 13TT187   W84  C~4yRE      
2016 11  03.17687  02 01 31.990  -00 48 40.50  23.3r 13TT187   W84  C~4yRE      
2016 11  03.17687  02 01 31.99   -00 48 40.6   23.5r 13TT187   W84  C~3clQ      
2016 11  03.17825  02 01 31.977  -00 48 40.41  23.7g 13TT187   W84  C~4yRE      
2016 11  05.23333  02 01 22.371  -00 49 32.19  22.8i 13TT187   W84  C~4yRE      
2016 11  05.23333  02 01 22.37   -00 49 32.2   22.9i 13TT187   W84  C~3clQ      
2016 11  28.12027  01 59 44.449  -00 56 40.85  22.9i 13TT187   W84  C~4yRE      
2016 11  28.12027  01 59 44.45   -00 56 40.8   22.9i 13TT187   W84  C~3clQ      
2016 11  28.12449  01 59 44.428  -00 56 40.84  22.8r 13TT187   W84  C~4yRE      
2016 11  28.12449  01 59 44.43   -00 56 40.8   23.1r 13TT187   W84  C~3clQ      
2016 11  28.12586  01 59 44.434  -00 56 40.95  23.6g 13TT187   W84  C~4yRE      
2016 11  28.12586  01 59 44.43   -00 56 40.9   23.6g 13TT187   W84  C~3clQ      
2016 11  30.14657  01 59 36.967  -00 57 04.13  22.0z 13TT187   W84  C~4yRE      
2017 10  22.20898  02 08 36.219  -00 34 21.03  24.6g 13TT187   W84  C~4yRE      
2017 10  29.26209  02 08 02.641  -00 37 46.44  22.7r 13TT187   W84  C~4yRE      
2017 10  30.21674  02 07 58.111  -00 38 12.62  22.8z 13TT187   W84  C~4yRE      
2017 11  16.16821  02 06 39.661  -00 44 52.81  23.0i 13TT187   W84  C~4yRE      
2017 11  16.16958  02 06 39.642  -00 44 52.68  23.9g 13TT187   W84  C~4yRE      
2017 11  22.18019  02 06 13.839  -00 46 39.42  23.2r 13TT187   W84  C~4yRE      
2017 11  22.18292  02 06 13.812  -00 46 39.43  24.1g 13TT187   W84  C~4yRE      
2018 10  10.32146  02 15 37.208  -00 19 17.36  22.7i 13TT187   W84  C~4yRE      
2018 10  10.32283  02 15 37.210  -00 19 17.24  23.5g 13TT187   W84  C~4yRE      
2018 10  20.20495  02 14 51.894  -00 24 35.73  22.4z 13TT187   W84  C~4yRE      

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    -0.25       0.00     0.00
     2   0.0000      0.00    -0.17       0.00    -0.05
     3   0.0870      0.00     0.03       0.00     0.10
     4   0.0872      0.00     0.06       0.00     0.08
     5   0.0874      0.00     0.09       0.00     0.05
     6   0.9940      0.00     0.14       0.00    -0.05
     7   0.9940      0.00     0.12       0.00     0.00
     8   0.9967      0.00     0.13       0.00    -0.18
     9   0.9967      0.00    -0.02       0.00     0.04
    10   0.9967      0.00     0.01       0.00     0.08
    11   2.2745      0.00     0.02       0.00    -0.04
    12   2.2745      0.00     0.05       0.00    -0.01
    13   2.2745      0.00     0.00       0.00    -0.20
    14   2.9353      0.00    -0.02       0.00    -0.03
    15   2.9353      0.00     0.18       0.00    -0.16
    16   3.0852      0.00    -0.08       0.00    -0.09
    17   3.0852      0.00    -0.08       0.00     0.01
    18   3.0852      0.00    -0.18       0.00     0.14
    19   3.0909      0.00    -0.09       0.00     0.03
    20   3.0909      0.00    -0.07       0.00     0.04
    21   3.1535      0.00     0.04       0.00    -0.00
    22   3.1535      0.00     0.02       0.00    -0.05
    23   3.1535      0.00    -0.02       0.00     0.05
    24   3.1535      0.00    -0.05       0.00     0.01
    25   3.1535      0.00     0.06       0.00    -0.03
    26   3.1535      0.00     0.12       0.00    -0.08
    27   3.1591      0.00     0.15       0.00     0.13
    28   4.0518      0.00     0.05       0.00     0.25
    29   4.0711      0.00    -0.06       0.00    -0.00
    30   4.0737      0.00     0.10       0.00     0.16
    31   4.1201      0.00     0.05       0.00    -0.01
    32   4.1201      0.00    -0.14       0.00     0.14
    33   4.1366      0.00     0.07       0.00    -0.04
    34   4.1366      0.00    -0.16       0.00    -0.01
    35   5.0186      0.00     0.04       0.00    -0.07
    36   5.0186      0.00     0.16       0.00     0.10
    37   5.0456      0.00    -0.07       0.00    -0.21

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.

13TT187    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.419    44.419    44.419
ecceobj         0.122     0.122     0.122
incobj         19.214    19.214    19.214
qmin           38.114    38.115    38.113
qmax           50.422    50.411    50.431
amean          44.092    44.091    44.092
amin           43.733    43.733    43.733
amax           44.484    44.484    44.488
emean           0.119     0.119     0.119
emin            0.106     0.106     0.106
emax            0.134     0.134     0.134
imean          18.757    18.757    18.757
imin           18.302    18.303    18.301
imax           19.183    19.183    19.184
excite_mean     0.343     0.343     0.343
fracstop        1.000     1.000     1.000
cjmean          2.958     2.958     2.958

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       180.1     180.2     180.1
kozaiamp        180.0     179.9     180.0