Orbit Fit and Astrometric record for 06TK121

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: 06TK121   
# Created Fri Oct 20 01:37:43 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:  90.80d
# First observation: 2006/10/15
#  Last observation: 2007/01/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000023   0.035479   0.000036  -0.013261   0.030126   0.000000
# Chi-squared of fit:     3.51 DOF:   24 RMS:  0.09
# Min/Max residuals:    -0.18    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.613953E-05  2.960024E-02 -6.660186E-06 -1.212853E-02  2.934394E-02 -6.009002E-03
# Covariance matrix:
  3.8719E-13 -5.1648E-12 -2.3996E-14  4.2216E-13  4.7179E-13  2.3652E-10
 -5.1648E-12  1.5204E-09  8.8242E-12 -2.7401E-10  1.5472E-10 -3.1749E-08
 -2.3996E-14  8.8242E-12  3.0856E-13 -2.9758E-12  8.9203E-13 -1.8811E-10
  4.2216E-13 -2.7401E-10 -2.9758E-12  6.2408E-11 -3.0000E-11  5.4221E-09
  4.7179E-13  1.5472E-10  8.9203E-13 -3.0000E-11  2.1998E-11 -2.1396E-09
  2.3652E-10 -3.1749E-08 -1.8811E-10  5.4221E-09 -2.1396E-09  8.7181E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
  -16.627049   28.668751    0.119281   -0.284299   -0.952542  2454023.780344
# Heliocentric elements and errors
Epoch:              2454020.5000  =  2006/10/12
Mean Anomaly:          305.51985 +/-     1.354
Argument of Peri:      294.16396 +/-     1.550
Long of Asc Node:      174.30575 +/-     0.033
Inclination:            27.30420 +/-     0.020
Eccentricity:         0.20878959 +/-    0.0304
Semi-Major Axis:     38.37129681 +/-    0.5646
Time of Perihelion: 2467158.9450 +/-     150.3
Perihelion:          30.35976946 +/-    1.2478
Aphelion:            46.38282417 +/-    1.3502
Period (y)              237.6938 +/-      5.25
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.57694179 +/-    0.0046
Ecliptic Y           16.03434695 +/-    0.0025
Ecliptic Z           -9.75152913 +/-    0.0016
Ecliptic XDOT        -0.00207550 +/-    0.0001
Ecliptic YDOT         0.00200559 +/-    0.0000
Ecliptic ZDOT        -0.00092393 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.02838974 +/-    0.0041
Geocenter to KBO     34.07858256 +/-    0.0054
# Hcoef:  7.92

The following table shows the complete astrometric record for 06TK121. 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 (06TK121) followed by the observatory code and reference code for the source of the astrometry.

2006 10  15.27959  02 09 59.71   -04 34 11.9   23.1R 06TK121   807  Cv6280      
2006 10  15.30276  02 09 59.59   -04 34 12.8   22.7I 06TK121   807  Cv6280      
2006 10  19.30420  02 09 38.49   -04 36 49.0   23.4R 06TK121   807  Cv6280      
2006 10  21.29087  02 09 27.88   -04 38 04.0   23.2R 06TK121   807  Cv6280      
2006 10  21.31867  02 09 27.73   -04 38 05.1   22.6I 06TK121   807  Cv6280      
2006 11  12.10143  02 07 31.54   -04 49 23.1   23.0R 06TK121   807  Cv6280      
2006 11  12.12180  02 07 31.43   -04 49 23.4   22.8I 06TK121   807  Cv6280      
2006 11  26.25153  02 06 22.74   -04 53 51.9   22.5I 06TK121   807  Cv6280      
2006 12  13.12456  02 05 16.77   -04 55 47.5   23.2R 06TK121   807  Cv6280      
2006 12  17.10763  02 05 04.51   -04 55 41.4   23.5R 06TK121   807  Cv6280      
2006 12  19.12017  02 04 58.88   -04 55 33.3   23.4R 06TK121   807  Cv6280      
2006 12  25.15166  02 04 44.32   -04 54 49.8   22.9I 06TK121   807  Cv6280      
2007 01  11.09952  02 04 23.64   -04 50 18.9   23.3R 06TK121   807  Cv6280      
2007 01  11.11979  02 04 23.63   -04 50 18.6   23.0I 06TK121   807  Cv6280      
2007 01  14.08214  02 04 23.24   -04 49 10.3   22.8I 06TK121   807  Cv6280      

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    -0.04       0.00     0.03
  2   0.0001     -2.00     0.01      -0.21     0.03
  3   0.0110   -352.20     0.15     -36.09     0.02
  4   0.0165   -527.05    -0.03     -50.83     0.02
  5   0.0165   -529.53    -0.04     -51.07    -0.05
  6   0.0762  -2393.98    -0.08     -79.01    -0.18
  7   0.0762  -2395.63    -0.05     -78.72     0.02
  8   0.1149  -3451.63    -0.00      28.09     0.16
  9   0.1611  -4416.32     0.23     263.60     0.07
 10   0.1720  -4586.01    -0.06     333.19    -0.03
 11   0.1775  -4662.09     0.05     370.11    -0.04
 12   0.1940  -4851.01    -0.12     486.73    -0.14
 13   0.2404  -5046.50     0.01     848.43     0.09
 14   0.2405  -5046.54    -0.08     848.76    -0.03
 15   0.2486  -5028.21     0.06     914.84     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.

06TK121    quality flag:1

Type:       CENTAURS  CENTAURR  SCATNEAR

axisobj        38.838    40.933    37.538
ecceobj         0.213     0.301     0.128
incobj         27.214    27.154    27.274
qmin           29.238    26.689    31.361
qmax           51.551    55.307    43.702
amean          39.943    40.671    37.219
amin           38.078    39.579    36.807
amax           41.220    41.199    37.827
emean           0.214     0.323     0.125
emin            0.172     0.280     0.100
emax            0.266     0.344     0.159
imean          27.708    25.586    27.227
imin           26.300    24.837    26.032
imax           29.002    27.154    28.265
excite_mean     0.512     0.539     0.474
fracstop        1.000     0.125     1.000
cjmean          2.746     2.733     2.770

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       174.1     191.9     180.9
kozaiamp        180.0     179.9     179.9