Orbit Fit and Astrometric record for 13UE15

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: 13UE15    
# Created Wed Oct 18 01:38:19 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   34 observations of   34
# Arc:  11.16y
# First observation: 2003/11/16
#  Last observation: 2015/01/14
# Chi-squared of fit:    24.38 DOF:   62 RMS:  0.15
# Min/Max residuals:    -0.71    0.35
# Exact a, adot, b, bdot, g, gdot:
  2.557556E-05  7.339865E-02  1.331637E-06  8.233331E-03  4.559428E-02 -2.109237E-02
# Covariance matrix:
  4.8806E-13 -2.1068E-11  5.3267E-15 -2.0610E-12  5.8983E-12 -2.7605E-11
 -2.1068E-11  3.3299E-07 -1.9685E-10  3.2417E-08  7.5135E-08  4.3809E-07
  5.3267E-15 -1.9685E-10  3.7432E-13 -1.9987E-11 -4.4740E-11 -2.5906E-10
 -2.0610E-12  3.2417E-08 -1.9987E-11  3.3074E-09  7.3137E-09  4.2668E-08
  5.8983E-12  7.5135E-08 -4.4740E-11  7.3137E-09  1.7439E-08  9.8850E-08
 -2.7605E-11  4.3809E-07 -2.5906E-10  4.2668E-08  9.8850E-08  5.7662E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.076293    4.991758   -0.735527   -0.023879   -0.659939  2452959.676199
# Heliocentric elements and errors
Epoch:              2452960.5000  =  2003/11/17
Mean Anomaly:          353.86590 +/-     0.029
Argument of Peri:       18.78164 +/-     0.004
Long of Asc Node:       24.18000 +/-     0.004
Inclination:             6.74187 +/-     0.006
Eccentricity:         0.65082180 +/-    0.0000
Semi-Major Axis:     59.80029386 +/-    0.0001
Time of Perihelion: 2455838.5713 +/-      13.5
Perihelion:          20.88095891 +/-    0.0005
Aphelion:            98.71962881 +/-    0.0005
Period (y)              462.4483 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           22.42564103 +/-    0.0003
Ecliptic Y            2.70103775 +/-    0.0000
Ecliptic Z           -0.79458504 +/-    0.0000
Ecliptic XDOT        -0.00163112 +/-    0.0000
Ecliptic YDOT         0.00427602 +/-    0.0000
Ecliptic ZDOT         0.00054012 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   22.60183085 +/-    0.0003
Geocenter to KBO     21.93278291 +/-    0.0003
# Hcoef:  8.47

The following table shows the complete astrometric record for 13UE15. 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 (13UE15) followed by the observatory code and reference code for the source of the astrometry.

2003 11  16.175456 00 21 37.15   +00 04 38.1         13UE15    645  C~1vX4      
2003 11  16.176285 00 21 37.15   +00 04 38.1         13UE15    645  C~1vX4      
2003 11  16.178773 00 21 37.14   +00 04 38.1         13UE15    645  C~1vX4      
2003 11  20.154815 00 21 21.24   +00 03 34.7   22.0V 13UE15    645  C~1vX4      
2003 11  20.155644 00 21 21.23   +00 03 34.7   21.5V 13UE15    645  C~1vX4      
2003 11  20.158132 00 21 21.23   +00 03 34.7   22.9V 13UE15    645  C~1vX4      
2008 10  29.396945 01 44 58.69   +11 28 12.1   21.3V 13UE15    645  C~1vX4      
2008 10  29.397774 01 44 58.69   +11 28 12.1   20.8V 13UE15    645  C~1vX4      
2008 10  29.400262 01 44 58.66   +11 28 12.0   22.4V 13UE15    645  C~1vX4      
2008 11  02.383128 01 44 26.35   +11 25 33.3   21.4V 13UE15    645  C~1vX4      
2008 11  02.383957 01 44 26.34   +11 25 33.2   20.8V 13UE15    645  C~1vX4      
2008 11  02.386445 01 44 26.32   +11 25 33.2   22.5V 13UE15    645  C~1vX4      
2010 11  03.44770  02 21 23.007  +15 55 35.33  21.3w 13UE15    F51  C~1vX4      
2010 11  03.46044  02 21 22.891  +15 55 34.74  21.3w 13UE15    F51  C~1vX4      
2010 11  03.48586  02 21 22.667  +15 55 33.81  21.3w 13UE15    F51  C~1vX4      
2012 10  19.54138  03 02 31.024  +20 10 33.07  21.6w 13UE15    F51  C~1vX4      
2012 10  19.55561  03 02 30.902  +20 10 32.82  21.6w 13UE15    F51  C~1vX4      
2012 10  19.56984  03 02 30.790  +20 10 32.43  21.3w 13UE15    F51  C~1vX4      
2013 10  30.35392  03 21 07.567  +21 56 50.25  21.6w 13UE15    F51  C~1vX4      
2013 10  30.36823  03 21 07.428  +21 56 49.98  21.7w 13UE15    F51  C~1vX4      
2013 10  30.48938  03 21 06.364  +21 56 47.12  21.6w 13UE15    F51  C~1vX4      
2013 10  30.50376  03 21 06.240  +21 56 46.79  21.7w 13UE15    F51  C~1vX4      
2014 12  10.43441  03 35 21.372  +23 20 29.65  21.3i 13UE15    F51  C~1vX4      
2014 12  10.44654  03 35 21.259  +23 20 29.41  21.7i 13UE15    F51  C~1vX4      
2014 12  10.45872  03 35 21.173  +23 20 28.95  21.3i 13UE15    F51  C~1vX4      
2014 12  10.47084  03 35 21.074  +23 20 28.67  21.3i 13UE15    F51  C~1vX4      
2015 01  11.33435  03 32 01.229  +23 07 51.54  21.8w 13UE15    F51  C~1vX4      
2015 01  11.34714  03 32 01.181  +23 07 51.29  21.7w 13UE15    F51  C~1vX4      
2015 01  11.35989  03 32 01.126  +23 07 51.08  21.8w 13UE15    F51  C~1vX4      
2015 01  11.37266  03 32 01.077  +23 07 50.94  22.0w 13UE15    F51  C~1vX4      
2015 01  14.32470  03 31 50.747  +23 07 00.03  22.1w 13UE15    F51  C~1vX4      
2015 01  14.33752  03 31 50.693  +23 06 59.85  22.0w 13UE15    F51  C~1vX4      
2015 01  14.35027  03 31 50.655  +23 06 59.61  22.0w 13UE15    F51  C~1vX4      
2015 01  14.36303  03 31 50.610  +23 06 59.39  21.9w 13UE15    F51  C~1vX4      

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    -0.14       0.00    -0.71
  2   0.0000      0.00    -0.04       0.00     0.31
  3   0.0000      0.00    -0.03       0.00     0.35
  4   0.0109      0.00     0.05       0.00    -0.06
  5   0.0109      0.00    -0.06       0.00    -0.05
  6   0.0109      0.00     0.09       0.00    -0.02
  7   4.9534      0.00     0.11       0.00    -0.15
  8   4.9534      0.00     0.22       0.00    -0.12
  9   4.9534      0.00     0.08       0.00    -0.12
 10   4.9643      0.00     0.30       0.00    -0.20
 11   4.9643      0.00     0.25       0.00    -0.26
 12   4.9643      0.00     0.25       0.00    -0.16
 13   6.9658      0.00     0.13       0.00     0.05
 14   6.9659      0.00     0.06       0.00    -0.06
 15   6.9659      0.00     0.05       0.00    -0.05
 16   8.9264      0.00     0.14       0.00     0.02
 17   8.9264      0.00     0.07       0.00     0.11
 18   8.9265      0.00     0.15       0.00     0.07
 19   9.9553      0.00     0.16       0.00     0.11
 20   9.9554      0.00    -0.04       0.00     0.16
 21   9.9557      0.00     0.02       0.00     0.12
 22   9.9557      0.00     0.06       0.00     0.13
 23  11.0671      0.00     0.03       0.00    -0.05
 24  11.0671      0.00    -0.13       0.00     0.04
 25  11.0672      0.00     0.12       0.00    -0.08
 26  11.0672      0.00     0.17       0.00    -0.02
 27  11.1544      0.00     0.07       0.00     0.06
 28  11.1545      0.00     0.11       0.00     0.04
 29  11.1545      0.00     0.03       0.00     0.07
 30  11.1545      0.00     0.05       0.00     0.16
 31  11.1626      0.00     0.12       0.00     0.02
 32  11.1627      0.00    -0.03       0.00     0.06
 33  11.1627      0.00     0.04       0.00     0.03
 34  11.1627      0.00     0.02       0.00     0.03

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.

13UE15    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        61.270    61.269    61.271
ecceobj         0.659     0.659     0.659
incobj          6.723     6.723     6.723
qmin           20.549    20.437    20.574
qmax          101.621   101.619   108.576
amean          58.811    56.613    60.619
amin           56.470    53.567    57.620
amax           61.481    61.269    64.910
emean           0.642     0.630     0.651
emin            0.627     0.608     0.636
emax            0.659     0.659     0.673
imean           8.324     7.558     8.358
imin            6.726     6.726     6.726
imax            9.896     8.511     9.413
excite_mean     0.659     0.644     0.667
fracstop        0.032     0.028     0.045
cjmean          2.628     2.639     2.623

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        49.0      51.1      61.1
kozaiamp         27.6      31.0      40.2