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 Oct 24 01:37:54 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   4.27y
# First observation: 2010/10/07
#  Last observation: 2015/01/14
Preliminary a, adot, b, bdot, g, gdot:
   0.000471   0.146693  -0.000100   0.003946   0.097114   0.000000
# Chi-squared of fit:    14.38 DOF:   40 RMS:  0.14
# Min/Max residuals:    -0.42    0.30
# Exact a, adot, b, bdot, g, gdot:
  2.934174E-05  1.325632E-01  1.099189E-06  3.716238E-03  7.184424E-02 -4.163630E-03
# Covariance matrix:
  2.1615E-13 -1.2816E-13  1.1195E-15 -2.9242E-15  3.5161E-14 -1.6366E-13
 -1.2816E-13  3.4332E-13 -3.5335E-15  9.2127E-15  1.8323E-13  5.1562E-13
  1.1195E-15 -3.5335E-15  1.7668E-13 -4.7280E-14 -9.9616E-16 -6.0429E-15
 -2.9242E-15  9.2127E-15 -4.7280E-14  1.8841E-14  2.5746E-15  1.5765E-14
  3.5161E-14  1.8323E-13 -9.9616E-16  2.5746E-15  4.4184E-13  1.4410E-13
 -1.6366E-13  5.1562E-13 -6.0429E-15  1.5765E-14  1.4410E-13  8.8233E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.937225   33.240189    0.328363   -0.015399   -0.939941  2455476.889036
# Heliocentric elements and errors
Epoch:              2455470.5000  =  2010/10/01
Mean Anomaly:          352.82489 +/-     0.001
Argument of Peri:      344.56338 +/-     0.002
Long of Asc Node:       60.87252 +/-     0.001
Inclination:             1.81462 +/-     0.000
Eccentricity:         0.29133558 +/-    0.0000
Semi-Major Axis:     20.84627307 +/-    0.0011
Time of Perihelion: 2456163.3942 +/-       0.1
Perihelion:          14.77301202 +/-    0.0010
Aphelion:            26.91953411 +/-    0.0015
Period (y)               95.1811 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.61024221 +/-    0.0001
Ecliptic Y            7.86843420 +/-    0.0001
Ecliptic Z           -0.22765004 +/-    0.0000
Ecliptic XDOT        -0.00289970 +/-    0.0000
Ecliptic YDOT         0.00414584 +/-    0.0000
Ecliptic ZDOT         0.00014418 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   14.86547308 +/-    0.0001
Geocenter to KBO     13.91900025 +/-    0.0001
# 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.

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    -0.03       0.00    -0.06
  2   0.0000     -2.68    -0.08       0.06    -0.03
  3   0.0001     -5.53    -0.14       0.09    -0.04
  4   0.0001     -8.42    -0.13       0.16    -0.01
  5   0.0713  -4643.12     0.23      44.73     0.01
  6   0.0714  -4649.00     0.03      44.82    -0.02
  7   0.0714  -4651.22     0.12      44.79    -0.09
  8   2.0346  54291.14     0.12    1592.12     0.21
  9   2.0346  54288.39    -0.07    1592.11     0.16
 10   2.0347  54286.19     0.29    1592.24     0.25
 11   2.1680  45304.59    -0.22    1733.68    -0.12
 12   2.1681  45302.35    -0.07    1733.81    -0.07
 13   2.1681  45299.98    -0.06    1733.94    -0.01
 14   4.1121 112840.56    -0.07    3454.80    -0.04
 15   4.1122 112834.74     0.30    3454.99     0.04
 16   4.1122 112831.50     0.14    3454.90    -0.10
 17   4.1427 110199.11    -0.17    3484.58    -0.06
 18   4.1427 110196.09    -0.03    3484.51    -0.17
 19   4.1427 110192.53    -0.42    3484.92     0.21
 20   4.2709 101771.84     0.13    3600.07    -0.01
 21   4.2709 101770.47     0.02    3600.06    -0.06
 22   4.2710 101769.30     0.10    3600.22     0.08
 23   4.2710 101767.97     0.03    3600.09    -0.08

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    20.850    20.844
ecceobj         0.291     0.291     0.291
incobj          1.816     1.816     1.816
qmin           14.510    14.721    14.634
qmax           27.151    26.959    26.948
amean          20.751    20.787    20.741
amin           20.454    20.629    20.473
amax           21.000    20.866    20.869
emean           0.287     0.285     0.284
emin            0.280     0.280     0.276
emax            0.294     0.292     0.292
imean           1.408     1.328     1.386
imin            1.301     1.304     1.300
imax            1.714     1.362     1.918
excite_mean     0.288     0.286     0.285
fracstop        0.002     0.001     0.002
cjmean          3.040     3.040     3.042

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       210.1     350.8     208.7
kozaiamp        176.8       7.1     178.3