Orbit Fit and Astrometric record for 96TK66

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: 96TK66    
# Created Thu Oct 18 01:07:24 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   46 observations of   46
# Arc:  20.96y
# First observation: 1996/10/09
#  Last observation: 2017/09/23
# Chi-squared of fit:   283.07 DOF:   86 RMS:  0.44
# Min/Max residuals:    -1.38    1.21
# Exact a, adot, b, bdot, g, gdot:
  1.243492E-05  2.285713E-02  3.532013E-06  1.009239E-03  2.388020E-02  1.664846E-04
# Covariance matrix:
  1.1840E-13 -2.2123E-14  1.3705E-15 -7.1551E-16 -3.2736E-14 -3.5821E-14
 -2.2123E-14  1.0020E-14 -8.0335E-16  4.1230E-16  2.2625E-14  2.0630E-14
  1.3705E-15 -8.0335E-16  8.9925E-14 -5.7751E-15 -2.4890E-15 -1.7368E-15
 -7.1551E-16  4.1230E-16 -5.7751E-15  5.6527E-16  9.0972E-16  8.9959E-16
 -3.2736E-14  2.2625E-14 -2.4890E-15  9.0972E-16  2.4822E-13  4.4923E-14
 -3.5821E-14  2.0630E-14 -1.7368E-15  8.9959E-16  4.4923E-14  4.5026E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.181190    4.329252   -0.213351   -0.037104   -0.971393  2450365.736250
# Heliocentric elements and errors
Epoch:              2450366.5000  =  1996/10/10
Mean Anomaly:           90.27026 +/-     0.238
Argument of Peri:      227.97177 +/-     0.227
Long of Asc Node:       44.62581 +/-     0.000
Inclination:             3.31214 +/-     0.000
Eccentricity:         0.01478510 +/-    0.0000
Semi-Major Axis:     42.84041990 +/-    0.0034
Time of Perihelion: 2424684.9531 +/-      67.7
Perihelion:          42.20701982 +/-    0.0033
Aphelion:            43.47381999 +/-    0.0034
Period (y)              280.4070 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.68478812 +/-    0.0009
Ecliptic Y            3.43896462 +/-    0.0001
Ecliptic Z           -1.59365295 +/-    0.0000
Ecliptic XDOT        -0.00016777 +/-    0.0000
Ecliptic YDOT         0.00261955 +/-    0.0000
Ecliptic ZDOT         0.00011472 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.85273086 +/-    0.0009
Geocenter to KBO     41.87572771 +/-    0.0009
# Hcoef:  6.20

The following table shows the complete astrometric record for 96TK66. 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 (96TK66) followed by the observatory code and reference code for the source of the astrometry.

1996 10  09.23553  00 19 21.26   -00 16 53.5   23.6R 96TK66    807  C29061      
1996 10  09.24304  00 19 21.25   -00 16 53.6         96TK66    807  C29061      
1996 10  10.14855  00 19 17.37   -00 17 17.3         96TK66    807  C29061      
1996 10  12.45559  00 19 07.35   -00 18 17.5   22.9R 96TK66    568  C28978      
1996 10  12.46587  00 19 07.32   -00 18 17.6         96TK66    568  C28978      
1996 10  12.47616  00 19 07.28   -00 18 17.9         96TK66    568  C28978      
1997 09  07.43861  00 26 22.68   +00 32 11.3         96TK66    675  Ca0009      
1997 09  07.46215  00 26 22.59   +00 32 10.8         96TK66    675  Ca0009      
1997 09  07.48509  00 26 22.49   +00 32 10.1         96TK66    675  Ca0009      
1997 09  21.10170  00 25 25.41   +00 25 58.1   22.5R 96TK66    809  Ca0009      
1997 09  21.11772  00 25 25.36   +00 25 57.8         96TK66    809  Ca0009      
1997 09  21.13370  00 25 25.26   +00 25 57.1         96TK66    809  Ca0009      
1998 10  18.25954  00 28 12.25   +00 48 14.9         96TK66    705  Ca2543      
1998 10  18.29943  00 28 12.06   +00 48 14.1         96TK66    705  Ca2543      
2000 11  26.19753  00 35 25.14   +01 44 11.7   21.4R 96TK66    695  Cc3488      
2000 11  27.24289  00 35 22.86   +01 44 00.6   21.5R 96TK66    695  Cc3488      
2000 11  27.30817  00 35 22.72   +01 44 00.0   21.8R 96TK66    695  Cc3488      
2000 11  28.18596  00 35 20.89   +01 43 51.0   21.8R 96TK66    695  Cc3488      
2000 11  28.26167  00 35 20.74   +01 43 50.3   21.7R 96TK66    695  Cc3488      
2006 09  24.33491  01 07 42.22   +05 30 44.0   22.7R 96TK66    688  Cs0697      
2006 09  24.41099  01 07 41.90   +05 30 42.4         96TK66    688  Cs0697      
2010 10  06.43212  01 25 50.081  +07 38 04.84  22.2w 96TK66    F51  C~1vV3      
2010 10  06.44471  01 25 50.017  +07 38 04.02  22.4w 96TK66    F51  C~1vV3      
2010 10  06.45862  01 25 49.953  +07 38 04.25  22.6w 96TK66    F51  C~1vV3      
2010 10  13.45004  01 25 18.718  +07 35 02.34  22.5w 96TK66    F51  C~1vV3      
2010 10  13.46601  01 25 18.640  +07 35 01.99  22.7w 96TK66    F51  C~1vV3      
2010 10  13.48056  01 25 18.570  +07 35 01.60  22.6w 96TK66    F51  C~1vV3      
2010 10  13.49449  01 25 18.515  +07 35 01.28  22.7w 96TK66    F51  C~1vV3      
2012 10  17.39820  01 34 33.469  +08 38 26.68  22.7w 96TK66    F51  C~1vV3      
2012 10  17.41158  01 34 33.410  +08 38 26.30  22.6w 96TK66    F51  C~1vV3      
2012 10  17.42499  01 34 33.345  +08 38 26.10  22.6w 96TK66    F51  C~1vV3      
2012 10  17.43852  01 34 33.301  +08 38 25.70  22.4w 96TK66    F51  C~1vV3      
2012 11  06.28542  01 33 05.215  +08 30 14.81  22.4w 96TK66    F51  C~1vV3      
2012 11  06.30031  01 33 05.150  +08 30 14.62  22.4w 96TK66    F51  C~1vV3      
2012 11  06.31527  01 33 05.086  +08 30 14.09  22.6w 96TK66    F51  C~1vV3      
2012 11  06.33021  01 33 05.021  +08 30 13.80  22.2w 96TK66    F51  C~1vV3      
2013 10  07.35650  01 40 07.84   +09 15 03.1   22.3R 96TK66    695  C~0zdB      
2013 10  07.41793  01 40 07.55   +09 15 01.5         96TK66    695  C~0zdB      
2013 10  07.48230  01 40 07.27   +09 14 59.9         96TK66    695  C~0zdB      
2013 11  25.24564  01 36 39.338  +08 55 59.60  22.8w 96TK66    F51  C~1vV3      
2013 11  25.26067  01 36 39.290  +08 55 59.29  22.7w 96TK66    F51  C~1vV3      
2013 11  25.27569  01 36 39.223  +08 55 59.02  22.6w 96TK66    F51  C~1vV3      
2013 11  25.29070  01 36 39.174  +08 55 58.86  22.5w 96TK66    F51  C~1vV3      
2017 09  23.38042  02 00 21.96   +11 26 02.1   22.5R 96TK66    G37  C~2LPe      
2017 09  23.41818  02 00 21.80   +11 26 01.5         96TK66    G37  C~2LPe      
2017 09  23.46754  02 00 21.59   +11 26 00.4         96TK66    G37  C~2LPe      

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     0.79       0.00    -0.30
  2   0.0000      0.00     1.14       0.00    -0.20
  3   0.0025      0.00     1.21       0.00     0.02
  4   0.0088      0.00    -1.38       0.00     0.25
  5   0.0088      0.00    -1.17       0.00     0.41
  6   0.0089      0.00    -1.10       0.00     0.38
  7   0.9123      0.00    -1.09       0.00     0.26
  8   0.9123      0.00    -1.00       0.00     0.38
  9   0.9124      0.00    -1.09       0.00     0.29
 10   0.9497      0.00     0.49       0.00    -0.17
 11   0.9497      0.00     0.80       0.00    -0.03
 12   0.9498      0.00     0.35       0.00    -0.28
 13   2.0233      0.00     0.89       0.00     0.20
 14   2.0234      0.00     0.59       0.00     0.41
 15   4.1313      0.00     0.36       0.00    -0.23
 16   4.1342      0.00     0.19       0.00    -0.17
 17   4.1344      0.00     0.22       0.00    -0.09
 18   4.1368      0.00     0.16       0.00    -0.19
 19   4.1370      0.00     0.31       0.00    -0.14
 20   9.9578      0.00     0.45       0.00    -0.32
 21   9.9580      0.00     0.56       0.00     0.06
 22  13.9910      0.00     0.02       0.00     0.13
 23  13.9910      0.00    -0.08       0.00    -0.36
 24  13.9910      0.00    -0.10       0.00     0.23
 25  14.0102      0.00     0.17       0.00    -0.27
 26  14.0102      0.00     0.09       0.00    -0.20
 27  14.0103      0.00     0.04       0.00    -0.21
 28  14.0103      0.00     0.18       0.00    -0.17
 29  16.0223      0.00    -0.12       0.00    -0.20
 30  16.0224      0.00    -0.07       0.00    -0.24
 31  16.0224      0.00    -0.12       0.00    -0.10
 32  16.0225      0.00     0.16       0.00    -0.15
 33  16.0768      0.00     0.12       0.00    -0.03
 34  16.0768      0.00     0.11       0.00     0.13
 35  16.0769      0.00     0.11       0.00    -0.06
 36  16.0769      0.00     0.11       0.00     0.00
 37  16.9942      0.00     0.09       0.00     0.25
 38  16.9943      0.00    -0.12       0.00     0.18
 39  16.9945      0.00    -0.00       0.00     0.19
 40  17.1280      0.00    -0.15       0.00    -0.09
 41  17.1281      0.00    -0.08       0.00    -0.13
 42  17.1281      0.00    -0.28       0.00    -0.13
 43  17.1281      0.00    -0.22       0.00    -0.01
 44  20.9559      0.00     0.38       0.00     0.41
 45  20.9560      0.00     0.17       0.00     0.57
 46  20.9561      0.00    -0.11       0.00     0.48

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.

96TK66    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.970    42.970    42.970
ecceobj         0.010     0.010     0.010
incobj          3.307     3.307     3.307
qmin           41.523    41.447    41.542
qmax           44.020    44.061    43.986
amean          42.690    42.689    42.690
amin           42.366    42.366    42.364
amax           43.027    43.027    43.021
emean           0.012     0.012     0.011
emin            0.000     0.000     0.000
emax            0.024     0.025     0.023
imean           2.015     2.015     2.004
imin            0.905     0.906     0.907
imax            2.975     2.975     2.975
excite_mean     0.038     0.038     0.037
fracstop        1.000     1.000     1.000
cjmean          3.084     3.084     3.084

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       177.6     177.8     173.5
kozaiamp        179.9     180.0     180.0