Orbit Fit and Astrometric record for 05TN74

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: 05TN74    
# Created Sun Aug 28 01:37:41 2016
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   6.90y
# First observation: 2003/10/23
#  Last observation: 2010/09/17
Preliminary a, adot, b, bdot, g, gdot:
  -0.002718   0.038114   0.000091  -0.001431   0.029062   0.000000
# Chi-squared of fit:   104.32 DOF:   44 RMS:  0.36
# Min/Max residuals:    -1.17    0.64
# Exact a, adot, b, bdot, g, gdot:
  1.802960E-05  3.586534E-02  1.414839E-06 -1.359789E-03  3.049559E-02 -5.272074E-03
# Covariance matrix:
  2.6929E-13 -1.6373E-13 -3.9724E-15  3.9352E-15  6.4699E-14 -4.1732E-13
 -1.6373E-13  1.4216E-13  4.0087E-15 -3.9796E-15 -5.5961E-14  4.2210E-13
 -3.9724E-15  4.0087E-15  1.4386E-13 -3.8821E-14 -5.5329E-16  1.4351E-14
  3.9352E-15 -3.9796E-15 -3.8821E-14  1.7471E-14  3.1039E-16 -1.4399E-14
  6.4699E-14 -5.5961E-14 -5.5329E-16  3.1039E-16  2.7282E-13 -3.0831E-14
 -4.1732E-13  4.2210E-13  1.4351E-14 -1.4399E-14 -3.0831E-14  1.5286E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.160107    2.557848   -0.445034   -0.002454   -0.891287  2452935.724470
# Heliocentric elements and errors
Epoch:              2452930.5000  =  2003/10/18
Mean Anomaly:          334.71965 +/-     0.009
Argument of Peri:      225.37623 +/-     0.014
Long of Asc Node:      179.20982 +/-     0.001
Inclination:             2.17135 +/-     0.000
Eccentricity:         0.24218806 +/-    0.0001
Semi-Major Axis:     42.29595649 +/-    0.0044
Time of Perihelion: 2459985.9907 +/-       2.2
Perihelion:          32.05238089 +/-    0.0041
Aphelion:            52.53953210 +/-    0.0059
Period (y)              275.0784 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.62622948 +/-    0.0006
Ecliptic Y            1.95165039 +/-    0.0000
Ecliptic Z           -0.09157326 +/-    0.0000
Ecliptic XDOT        -0.00062162 +/-    0.0000
Ecliptic YDOT         0.00318956 +/-    0.0000
Ecliptic ZDOT        -0.00012060 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.68294277 +/-    0.0006
Geocenter to KBO     32.79162715 +/-    0.0006
# Hcoef:  7.23

The following table shows the complete astrometric record for 05TN74. 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 (05TN74) followed by the observatory code and reference code for the source of the astrometry.

2003 10  23.223727 00 09 38.56   +00 52 12.9         05TN74    645  C~1tfA      
2003 10  23.224664 00 09 38.55   +00 52 12.9         05TN74    645  C~1tfA      
2003 10  23.226690 00 09 38.53   +00 52 12.8         05TN74    645  C~1tfA      
2003 11  19.139144 00 07 58.89   +00 41 09.7   22.6V 05TN74    645  C~1tfA      
2003 11  19.139977 00 07 58.89   +00 41 09.7         05TN74    645  C~1tfA      
2003 11  19.142465 00 07 58.88   +00 41 09.7         05TN74    645  C~1tfA      
2005 10  08.04350  00 26 22.33   +02 30 28.3   22.1R 05TN74    304  Co7672      
2005 10  08.08605  00 26 22.09   +02 30 26.8         05TN74    304  Co7672      
2005 10  08.12454  00 26 21.87   +02 30 25.2   22.0R 05TN74    304  Co7672      
2005 10  25.10432  00 24 55.07   +02 20 52.7         05TN74    304  Co7672      
2005 10  25.13750  00 24 54.86   +02 20 52.4   22.2R 05TN74    304  Co7672      
2005 11  03.07866  00 24 14.41   +02 16 27.1         05TN74    304  Cq3855      
2005 11  03.10677  00 24 14.34   +02 16 27.0         05TN74    304  Cq3855      
2005 11  04.09321  00 24 10.19   +02 15 59.4         05TN74    304  Cq3855      
2005 11  04.10939  00 24 10.04   +02 15 58.3         05TN74    304  Cq3855      
2005 11  28.03229  00 22 53.86   +02 07 38.0         05TN74    304  Cq3855      
2005 11  28.08780  00 22 53.72   +02 07 37.0   22.6R 05TN74    304  Cq3855      
2005 11  30.02219  00 22 49.93   +02 07 12.4   22.5R 05TN74    304  Cq3855      
2006 08  21.23514  00 38 10.66   +03 41 54.7   21.3R 05TN74    807  Cs2756      
2006 08  21.30780  00 38 10.38   +03 41 52.8         05TN74    807  Cs2756      
2006 08  22.21439  00 38 07.05   +03 41 30.3         05TN74    807  Cs2756      
2007 07  12.31367  00 47 09.34   +04 34 56.5         05TN74    304  Cv1998      
2007 07  12.40155  00 47 09.38   +04 34 56.7         05TN74    304  Cv1998      
2010 09  17.34393  01 08 29.88   +06 30 51.0   22.3R 05TN74    688  C~0NGk      
2010 09  17.39499  01 08 29.63   +06 30 49.8         05TN74    688  C~0NGk      

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     0.12       0.00    -0.44
  2   0.0000     -0.14     0.05       0.06    -0.38
  3   0.0000     -0.45    -0.11       0.09    -0.35
  4   0.0737  -1635.39     0.05     -14.37     0.34
  5   0.0737  -1635.39     0.08     -14.37     0.34
  6   0.0737  -1635.53     0.05     -14.31     0.40
  7   1.9598  16186.57    -0.17    -557.82     0.53
  8   1.9599  16182.65    -0.29    -557.77     0.58
  9   1.9600  16178.96    -0.52    -557.94     0.42
 10   2.0065  14749.77    -0.12    -569.04    -1.17
 11   2.0066  14746.75    -0.49    -568.07    -0.20
 12   2.0311  14081.76    -0.36    -571.72     0.13
 13   2.0312  14080.75     0.64    -571.39     0.44
 14   2.0339  14012.39     0.50    -572.11     0.12
 15   2.0339  14009.88    -0.88    -572.23     0.00
 16   2.0994  12757.99     0.43    -579.45    -0.02
 17   2.0996  12755.66     0.07    -579.53    -0.12
 18   2.1049  12693.51     0.46    -579.62     0.26
 19   2.8282  27759.14     0.07    -804.58    -0.24
 20   2.8284  27754.46    -0.08    -804.68    -0.30
 21   2.8309  27698.79     0.11    -805.78    -0.26
 22   3.7182  36632.93     0.22   -1038.67    -0.15
 23   3.7185  36633.58     0.29   -1038.72    -0.11
 24   6.9025  58038.62    -0.21   -2055.38    -0.09
 25   6.9026  58034.40     0.09   -2055.05     0.27

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.

05TN74    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.831    42.844    42.818
ecceobj         0.250     0.250     0.250
incobj          2.163     2.163     2.163
qmin           31.711    31.687    31.684
qmax           53.609    53.594    53.638
amean          42.328    42.327    42.327
amin           41.819    41.808    41.798
amax           42.903    42.894    42.921
emean           0.222     0.223     0.228
emin            0.177     0.180     0.187
emax            0.250     0.250     0.251
imean           5.118     4.849     4.212
imin            2.236     2.237     2.235
imax            8.059     7.705     8.075
excite_mean     0.242     0.241     0.241
fracstop        1.000     1.000     1.000
cjmean          3.013     3.013     3.013

libcent 0       179.5     178.8     177.3
libamp  0       110.3     113.2     117.8
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       204.6     209.7     205.5
kozaiamp         39.2      47.0      38.1