Orbit Fit and Astrometric record for 97CT29

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: 97CT29    
# Created Tue Oct 24 01:36:56 2017
# Orbit generated from Bernstein formalism
# Fitting   42 observations of   43
# Arc:  16.11y
# First observation: 1997/02/02
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.001791   0.021741  -0.000014   0.000200   0.023052   0.000000
# Chi-squared of fit:   171.88 DOF:   78 RMS:  0.36
# Min/Max residuals:    -1.09    0.77
# Exact a, adot, b, bdot, g, gdot:
  1.130196E-05  2.109001E-02  6.976844E-07  1.931075E-04  2.278211E-02 -3.215132E-04
# Covariance matrix:
  1.1601E-13 -3.2979E-14  2.8673E-16 -2.2488E-16 -2.8186E-14 -7.7844E-14
 -3.2979E-14  1.6267E-14 -2.1849E-16  1.3335E-16  5.2873E-15  4.6459E-14
  2.8673E-16 -2.1849E-16  6.8377E-14 -7.4991E-15  4.8914E-16 -7.9291E-16
 -2.2488E-16  1.3335E-16 -7.4991E-15  1.6700E-15  8.9769E-19  4.3255E-16
 -2.8186E-14  5.2873E-15  4.8914E-16  8.9769E-19  1.1571E-13 -2.7069E-15
 -7.7844E-14  4.6459E-14 -7.9291E-16  4.3255E-16 -2.7069E-15  1.5121E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.888468  133.545393   -0.002064    0.015267   -0.994142  2450481.901380
# Heliocentric elements and errors
Epoch:              2450480.5000  =  1997/02/01
Mean Anomaly:          206.47032 +/-     0.038
Argument of Peri:      214.26985 +/-     0.035
Long of Asc Node:       74.54194 +/-     0.006
Inclination:             1.01371 +/-     0.000
Eccentricity:         0.03531224 +/-    0.0000
Semi-Major Axis:     43.49446674 +/-    0.0024
Time of Perihelion: 2495163.1872 +/-      10.4
Perihelion:          41.95857985 +/-    0.0030
Aphelion:            45.03035363 +/-    0.0031
Period (y)              286.8529 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.91672953 +/-    0.0005
Ecliptic Y           32.52488689 +/-    0.0005
Ecliptic Z            0.68065714 +/-    0.0000
Ecliptic XDOT        -0.00180414 +/-    0.0000
Ecliptic YDOT        -0.00176863 +/-    0.0000
Ecliptic ZDOT         0.00002243 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.87956914 +/-    0.0005
Geocenter to KBO     43.89408947 +/-    0.0007
# Hcoef:  6.53

The following table shows the complete astrometric record for 97CT29. 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 (97CT29) followed by the observatory code and reference code for the source of the astrometry.

1997 02  02.40066  09 05 06.85   +17 36 30.8   21.2R 97CT29    568  C30145      
1997 02  02.44503  09 05 06.63   +17 36 31.6         97CT29    568  C30145      
1997 02  04.52575  09 04 56.83   +17 37 14.2         97CT29    568  C30145      
1997 02  04.61478  09 04 56.39   +17 37 16.1         97CT29    568  C30145      
1997 02  07.41331  09 04 43.27   +17 38 12.0         97CT29    568  C30145      
1997 02  07.45203  09 04 43.09   +17 38 13.1         97CT29    568  C30145      
1997 03  04.19008  09 02 54.35   +17 45 49.0         97CT29    696  C30195      
1997 03  04.31560  09 02 53.90   +17 45 51.1         97CT29    696  C30195      
1997 03  04.40192  09 02 53.64   +17 45 52.1         97CT29    696  C30195      
1997 10  26.24487  09 13 29.88   +16 58 47.5         97CT29    950  Ca0104      
1997 10  27.24571  09 13 31.67   +16 58 40.9         97CT29    950  Ca0104      
1998 11  24.40719  09 18 31.00   +16 37 24.5   23.0R 97CT29    711  Ca3586      
1998 11  24.49450  09 18 30.86   +16 37 24.9   23.3R 97CT29    711  Ca3586      
1998 11  25.46811  09 18 30.15   +16 37 29.8   23.2R 97CT29    711  Ca3586      
1998 12  13.26107  09 18 03.33   +16 39 54.7         97CT29    950  Ca3328      
1998 12  15.26116  09 17 58.59   +16 40 18.7         97CT29    950  Ca3328      
1999 04  09.17313  09 10 49.87   +17 12 22.9   22.2R 97CT29    696  Ca4462      
1999 04  09.21223  09 10 49.77   +17 12 23.5   22.2R 97CT29    696  Ca4462      
2000 01  03.41816  09 21 48.06   +16 23 40.3   23.5R 97CT29    697  Ca9818      
2000 01  03.47852  09 21 47.85   +16 23 41.2         97CT29    697  Ca9818      
2000 01  03.52160  09 21 47.67   +16 23 42.2   23.0R 97CT29    697  Ca9818      
2000 01  05.34008  09 21 41.00   +16 24 14.7   23.4R 97CT29    697  Ca9818      
2000 01  05.41266  09 21 40.74   +16 24 16.1   23.0R 97CT29    697  Ca9818      
2000 01  05.49728  09 21 40.40   +16 24 17.7   22.9R 97CT29    697  Ca9818      
2000 01  30.22804  09 19 55.44   +16 32 36.6         97CT29    705  Ca9818      
2000 01  30.25276  09 19 55.32   +16 32 37.4         97CT29    705  Ca9818      
2000 01  30.27699  09 19 55.23   +16 32 37.7         97CT29    705  Ca9818      
2000 02  06.31074  09 19 22.70   +16 35 08.6   22.4R 97CT29    695  Cb0731      
2000 02  06.43987  09 19 22.09   +16 35 11.5         97CT29    695  Cb0731      
2001 02  19.07373  09 23 09.89   +16 18 14.0   23.1R 97CT29    950  Cc6334      
2001 02  19.13761  09 23 09.60   +16 18 15.3         97CT29    950  Cc6334      
2005 05  10.158083 09 38 56.98   +15 03 12.6   23.0V 97CT29    645  C~1cF1      
2005 05  10.158913 09 38 56.98   +15 03 12.6   22.9V 97CT29    645  C~1cF1      
2005 05  10.161400 09 38 56.98   +15 03 12.6   23.3V 97CT29    645  C~1cF1      
2006 01  06.431241 09 50 10.83   +14 07 26.7   23.0V 97CT29    645  C~1cF1      
2006 01  06.432070 09 50 10.83   +14 07 26.7   22.1V 97CT29    645  C~1cF1      
2006 01  06.434558 09 50 10.83   +14 07 26.7   24.1V 97CT29    645  C~1cF1      
2006 01  31.374844 09 48 32.59   +14 16 12.9   22.8V 97CT29    645  C~1cF1      
2006 01  31.375673 09 48 32.59   +14 16 12.9   22.7V 97CT29    645  C~1cF1      
2006 01  31.378161 09 48 32.57   +14 16 13.0   23.2V 97CT29    645  C~1cF1      
2013 03  13.26222  10 18 24.60   +11 37 13.9   23.0R 97CT29    695  C~0ucn      
2013 03  14.22116  10 18 20.65   +11 37 35.9         97CT29    695  C~0ucn      
2013 03  14.37144  10 18 20.03   +11 37 39.4         97CT29    695  C~0ucn      

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     0.69       0.00    -0.12
  2   0.0001     -3.24     0.61      -0.14    -0.25
  3   0.0058   -149.68     0.20       0.40     0.13
  4   0.0061   -156.25    -0.07       0.41     0.18
  5   0.0137   -351.96    -0.10       0.10    -0.32
  6   0.0138   -354.74    -0.14       0.41     0.01
  7   0.0816  -1974.17     0.04      -6.90    -0.92
  8   0.0819  -1980.93     0.77      -6.72    -0.63
  9   0.0821  -1984.78 (   2.03)     -6.82 (  -0.64)
 10   0.7278   7554.58     0.53     -55.12    -0.21
 11   0.7306   7581.09    -0.22     -53.77    -0.16
 12   1.8070  12074.59     0.65      22.73     0.58
 13   1.8072  12072.55    -0.42      22.50     0.26
 14   1.8099  12061.30    -1.09      24.07     0.56
 15   1.8586  11648.69     0.44      45.11    -0.01
 16   1.8641  11576.28    -0.50      47.32    -0.01
 17   2.1787   5119.54     0.29      44.00    -0.43
 18   2.1788   5117.99    -0.26      44.15    -0.22
 19   2.9159  15037.69    -0.05     105.20     0.20
 20   2.9160  15034.52     0.18     105.12     0.10
 21   2.9161  15031.74    -0.19     105.28     0.24
 22   2.9211  14929.88    -0.21     106.66     0.16
 23   2.9213  14925.87    -0.02     106.84     0.31
 24   2.9216  14920.69    -0.29     106.86     0.29
 25   2.9893  13323.22    -0.56     118.72     0.07
 26   2.9893  13321.32    -0.71     118.96     0.30
 27   2.9894  13319.99    -0.32     118.85     0.19
 28   3.0087  12826.58    -0.17     119.74     0.21
 29   3.0090  12817.31    -0.23     119.83     0.34
 30   4.0456  16265.75    -0.36     158.54     0.23
 31   4.0458  16261.35    -0.32     158.48     0.22
 32   8.2649  30858.01    -0.02     247.79     0.02
 33   8.2649  30858.01    -0.03     247.79     0.02
 34   8.2649  30858.01    -0.04     247.79     0.03
 35   8.9255  41515.82     0.23     352.89    -0.40
 36   8.9255  41515.82     0.28     352.89    -0.40
 37   8.9255  41515.82     0.41     352.89    -0.40
 38   8.9938  39934.10     0.55     365.37    -0.15
 39   8.9938  39934.10     0.60     365.37    -0.15
 40   8.9938  39933.78     0.46     365.36    -0.15
 41  16.1064  69818.04    -0.24     655.95    -0.02
 42  16.1090  69748.88    -0.23     655.22     0.08
 43  16.1094  69738.00    -0.15     655.15     0.21

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.

97CT29    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.714    43.722    43.707
ecceobj         0.029     0.029     0.029
incobj          1.014     1.014     1.014
qmin           41.832    41.841    41.830
qmax           45.893    45.882    45.930
amean          43.790    43.797    43.783
amin           43.452    43.463    43.447
amax           44.124    44.136    44.127
emean           0.025     0.025     0.025
emin            0.008     0.008     0.008
emax            0.040     0.040     0.041
imean           0.982     0.981     0.982
imin            0.178     0.178     0.177
imax            1.501     1.497     1.503
excite_mean     0.031     0.031     0.031
fracstop        1.000     1.000     1.000
cjmean          3.098     3.098     3.098

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       178.6     178.0     179.2
kozaiamp        179.9     180.0     180.0