Orbit Fit and Astrometric record for 10TU191

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: 10TU191   
# Created Tue Jul 17 01:37:48 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   26 observations of   26
# Arc:   6.28y
# First observation: 2008/10/03
#  Last observation: 2015/01/14
# Chi-squared of fit:    22.76 DOF:   46 RMS:  0.17
# Min/Max residuals:    -0.62    0.38
# Exact a, adot, b, bdot, g, gdot:
  2.793255E-05  1.277236E-01  6.240070E-07  2.967098E-03  7.058744E-02 -1.251560E-02
# Covariance matrix:
  4.3498E-13 -2.1838E-13  4.9643E-15 -4.2186E-15 -4.3024E-14 -1.4764E-13
 -2.1838E-13  1.6363E-13 -4.2139E-15  3.5656E-15  6.1739E-14  1.2460E-13
  4.9643E-15 -4.2139E-15  2.3751E-13 -4.6328E-14  3.5533E-16 -3.9483E-15
 -4.2186E-15  3.5656E-15 -4.6328E-14  1.1844E-14 -4.9846E-16  3.3880E-15
 -4.3024E-14  6.1739E-14  3.5533E-16 -4.9846E-16  3.2192E-13 -1.9903E-14
 -1.4764E-13  1.2460E-13 -3.9483E-15  3.3880E-15 -1.9903E-14  1.1898E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.323425   18.446994    0.134593   -0.022850   -0.990457  2454742.896186
# Heliocentric elements and errors
Epoch:              2454742.5000  =  2008/10/03
Mean Anomaly:          345.19483 +/-     1.651
Argument of Peri:      344.54615 +/-     0.000
Long of Asc Node:       60.84798 +/-     0.000
Inclination:             1.81566 +/-     0.000
Eccentricity:         0.28807722 +/-    0.0001
Semi-Major Axis:     20.75399977 +/-    0.0004
Time of Perihelion: 2456162.7413 +/-     158.4
Perihelion:          14.77524530 +/-    0.0023
Aphelion:            26.73275424 +/-    0.0023
Period (y)               94.5499 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           14.41917987 +/-    0.0002
Ecliptic Y            4.66301610 +/-    0.0000
Ecliptic Z           -0.32718181 +/-    0.0000
Ecliptic XDOT        -0.00201935 +/-    0.0000
Ecliptic YDOT         0.00454885 +/-    0.0000
Ecliptic ZDOT         0.00012615 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   15.15799472 +/-    0.0002
Geocenter to KBO     14.16689546 +/-    0.0002
# Hcoef: 10.59

The following table shows the complete astrometric record for 10TU191. 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 (10TU191) followed by the observatory code and reference code for the source of the astrometry.

2008 10  03.395432 01 10 05.38   +06 00 23.9   22.5V 10TU191   645  C~2POO      
2008 10  03.396262 01 10 05.36   +06 00 23.7   21.6V 10TU191   645  C~2POO      
2008 10  03.398749 01 10 05.33   +06 00 23.6   23.2V 10TU191   645  C~2POO      
2010 10  07.38827  02 05 22.775  +11 42 45.90  22.4w 10TU191   F51  C~1vWH      
2010 10  07.40372  02 05 22.602  +11 42 45.05  22.2w 10TU191   F51  C~1vWH      
2010 10  07.42013  02 05 22.419  +11 42 44.11  22.3w 10TU191   F51  C~1vWH      
2010 10  07.43718  02 05 22.232  +11 42 43.19  22.5w 10TU191   F51  C~1vWH      
2010 11  02.42769  02 00 24.929  +11 17 01.13  22.1w 10TU191   F51  C~1vWH      
2010 11  02.45865  02 00 24.552  +11 16 59.19  22.1w 10TU191   F51  C~1vWH      
2010 11  02.47128  02 00 24.411  +11 16 58.40  22.1w 10TU191   F51  C~1vWH      
2012 10  19.52779  03 02 39.400  +16 43 49.50  22.6w 10TU191   F51  C~1vWH      
2012 10  19.54204  03 02 39.228  +16 43 48.77  22.3w 10TU191   F51  C~1vWH      
2012 10  19.55626  03 02 39.088  +16 43 48.31  22.2w 10TU191   F51  C~1vWH      
2012 12  07.25743  02 53 11.167  +16 05 35.81  22.7w 10TU191   F51  C~1vWH      
2012 12  07.27243  02 53 11.023  +16 05 35.31  22.4w 10TU191   F51  C~1vWH      
2012 12  07.28747  02 53 10.870  +16 05 34.77  22.4w 10TU191   F51  C~1vWH      
2014 11  17.34425  03 59 16.030  +20 33 52.74  22.3w 10TU191   F51  C~1vWH      
2014 11  17.37005  03 59 15.715  +20 33 52.01  22.4w 10TU191   F51  C~1vWH      
2014 11  17.38291  03 59 15.542  +20 33 51.43  22.4w 10TU191   F51  C~1vWH      
2014 11  28.49628  03 56 53.149  +20 27 26.41  22.1w 10TU191   F51  C~1vWH      
2014 11  28.50955  03 56 52.986  +20 27 25.87  22.1w 10TU191   F51  C~1vWH      
2014 11  28.52276  03 56 52.788  +20 27 25.66  22.1w 10TU191   F51  C~1vWH      
2015 01  14.32886  03 49 08.235  +20 05 53.87  22.5w 10TU191   F51  C~1vWH      
2015 01  14.34168  03 49 08.159  +20 05 53.62  22.6w 10TU191   F51  C~1vWH      
2015 01  14.35444  03 49 08.091  +20 05 53.56  22.6w 10TU191   F51  C~1vWH      
2015 01  14.36721  03 49 08.019  +20 05 53.22  22.6w 10TU191   F51  C~1vWH      

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    -0.23       0.00    -0.62
  2   0.0000      0.00     0.09       0.00    -0.03
  3   0.0000      0.00     0.06       0.00     0.03
  4   2.0096      0.00     0.10       0.00    -0.02
  5   2.0096      0.00     0.04       0.00    -0.01
  6   2.0097      0.00    -0.01       0.00    -0.03
  7   2.0097      0.00    -0.01       0.00     0.00
  8   2.0809      0.00     0.34       0.00     0.14
  9   2.0809      0.00     0.16       0.00     0.04
 10   2.0810      0.00     0.27       0.00     0.01
 11   4.0442      0.00     0.18       0.00     0.26
 12   4.0442      0.00     0.02       0.00     0.17
 13   4.0442      0.00     0.33       0.00     0.34
 14   4.1776      0.00    -0.06       0.00    -0.14
 15   4.1776      0.00     0.07       0.00    -0.05
 16   4.1777      0.00     0.07       0.00     0.00
 17   6.1217      0.00     0.10       0.00    -0.03
 18   6.1218      0.00     0.38       0.00     0.10
 19   6.1218      0.00     0.28       0.00    -0.05
 20   6.1522      0.00     0.02       0.00    -0.06
 21   6.1523      0.00     0.16       0.00    -0.13
 22   6.1523      0.00    -0.23       0.00     0.13
 23   6.2804      0.00     0.17       0.00     0.02
 24   6.2805      0.00     0.09       0.00    -0.04
 25   6.2805      0.00     0.13       0.00     0.09
 26   6.2806      0.00     0.10       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.

10TU191    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        20.847    20.847    20.847
ecceobj         0.291     0.291     0.291
incobj          1.816     1.816     1.816
qmin           14.676    14.427    14.671
qmax           27.563    26.953    26.953
amean          20.927    20.642    20.768
amin           20.626    20.156    20.626
amax           21.541    20.866    20.865
emean           0.285     0.285     0.286
emin            0.272     0.280     0.280
emax            0.293     0.292     0.292
imean           1.432     1.439     1.353
imin            1.300     1.300     1.301
imax            1.779     1.749     1.497
excite_mean     0.286     0.286     0.287
fracstop        0.002     0.002     0.002
cjmean          3.036     3.045     3.040

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       214.2     229.4     260.6
kozaiamp        177.0     177.1     176.8