Orbit Fit and Astrometric record for 05TH173

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: 05TH173   
# Created Sat Oct 21 01:37:37 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    4 observations of    5
# Arc:  16.97d
# First observation: 2005/10/08
#  Last observation: 2005/10/25
# Chi-squared of fit:     1.05 DOF:    2 RMS:  0.09
# Min/Max residuals:    -0.08    0.19
# Exact a, adot, b, bdot, g, gdot:
  2.423296E-05  1.092183E-01 -7.560462E-06 -2.991658E-02  6.933485E-02 -1.398776E-04
# Covariance matrix:
  1.8253E-11  4.8801E-08 -4.7742E-14 -9.4433E-11  7.8680E-09  0.0000E+00
  4.8801E-08  1.3409E-04 -1.3115E-10 -2.5942E-07  2.1614E-05  0.0000E+00
 -4.7742E-14 -1.3115E-10  4.8445E-13 -1.0149E-11 -2.1140E-11  0.0000E+00
 -9.4433E-11 -2.5942E-07 -1.0149E-11  1.0712E-09 -4.1816E-08  0.0000E+00
  7.8680E-09  2.1614E-05 -2.1140E-11 -4.1816E-08  3.4840E-06  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  1.1047E-03
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.669299   16.020669    0.018646   -0.011580   -1.003298  2453651.688943
# Heliocentric elements and errors
Epoch:              2453652.5000  =  2005/10/09
Mean Anomaly:          356.39672 +/-   351.290
Argument of Peri:      186.27886 +/-    58.135
Long of Asc Node:      193.66894 +/-     0.255
Inclination:            15.35474 +/-     5.939
Eccentricity:         0.03906886 +/-    0.4914
Semi-Major Axis:     16.04729162 +/-   13.8445
Time of Perihelion: 2453887.5153 +/-   37813.5
Perihelion:          15.42034215 +/-   15.4650
Aphelion:            16.67424109 +/-   16.4049
Period (y)               64.2852 +/-     83.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           14.82703134 +/-    0.9357
Ecliptic Y            4.23784667 +/-    0.2685
Ecliptic Z           -0.16860825 +/-    0.0114
Ecliptic XDOT        -0.00120674 +/-    0.0020
Ecliptic YDOT         0.00413337 +/-    0.0010
Ecliptic ZDOT        -0.00118117 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   15.42169448 +/-    0.9025
Geocenter to KBO     14.42279616 +/-    0.9735
# Hcoef: 11.07

The following table shows the complete astrometric record for 05TH173. 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 (05TH173) followed by the observatory code and reference code for the source of the astrometry.

2005 10  08.18820  01 00 04.20   +05 41 05.2   22.5R 05TH173   304  Co7771      
2005 10  08.22696  01 00 03.76   +05 41 01.5   22.4R 05TH173   304  Co7771      
2005 10  08.26516  01 00 03.33   +05 40 58.3   22.4R 05TH173   304  Co7771      
2005 10  25.15692  00 57 01.27   +05 17 04.2         05TH173   304  Co7771      
2005 10  25.20921  00 57 00.71   +05 17 00.1         05TH173   304  Co7771      

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 (  -0.44)      0.00 (  -3.41)
  2   0.0001      0.00     0.11       0.00    -0.08
  3   0.0002      0.00     0.08       0.00     0.03
  4   0.0465      0.00     0.19       0.00    -0.02
  5   0.0466      0.00     0.06       0.00     0.15

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.

05TH173    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        16.163    16.163    16.163
ecceobj         0.045     0.045     0.045
incobj         15.305    15.305    15.305
qmin           13.354    11.515    13.857
qmax           18.897    20.672    18.566
amean          16.122    16.139    16.187
amin           15.982    15.763    15.859
amax           16.258    16.401    16.712
emean           0.091     0.126     0.096
emin            0.039     0.039     0.039
emax            0.168     0.275     0.140
imean          15.445    15.485    15.217
imin           14.717    14.690    14.220
imax           16.291    16.532    16.084
excite_mean     0.282     0.301     0.280
fracstop        0.086     0.068     0.090
cjmean          3.272     3.262     3.268

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       182.5     188.7     181.0
kozaiamp        179.3     179.3     179.3