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 Sat Oct 21 01:37:37 2017
# Orbit generated from Bernstein formalism
# Fitting   37 observations of   37
# Arc:   9.96y
# First observation: 2000/10/02
#  Last observation: 2010/09/17
Preliminary a, adot, b, bdot, g, gdot:
  -0.006515   0.037869   0.000278  -0.001439   0.032719   0.000000
# Chi-squared of fit:   138.84 DOF:   68 RMS:  0.34
# Min/Max residuals:    -1.06    0.71
# Exact a, adot, b, bdot, g, gdot:
  1.852981E-05  3.490349E-02  4.562109E-07 -1.322400E-03  3.009992E-02 -5.509417E-03
# Covariance matrix:
  3.5079E-13 -1.1534E-13 -6.0806E-15  3.1441E-15  3.9438E-15 -2.2270E-13
 -1.1534E-13  5.3536E-14  3.4809E-15 -1.8162E-15  3.1909E-14  1.2844E-13
 -6.0806E-15  3.4809E-15  1.7579E-13 -2.9490E-14  3.1475E-15  9.5877E-15
  3.1441E-15 -1.8162E-15 -2.9490E-14  6.2909E-15 -1.7354E-15 -5.0187E-15
  3.9438E-15  3.1909E-14  3.1475E-15 -1.7354E-15  2.2355E-13  1.2160E-13
 -2.2270E-13  1.2844E-13  9.5877E-15 -5.0187E-15  1.2160E-13  3.5472E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.074290   -3.073685   -0.212081    0.001079   -0.971921  2451819.845543
# Heliocentric elements and errors
Epoch:              2451810.5000  =  2000/09/23
Mean Anomaly:          331.85046 +/-     0.005
Argument of Peri:      224.32349 +/-     0.008
Long of Asc Node:      179.20252 +/-     0.001
Inclination:             2.16344 +/-     0.000
Eccentricity:         0.24906038 +/-    0.0000
Semi-Major Axis:     42.74352862 +/-    0.0036
Time of Perihelion: 2459791.7832 +/-       1.2
Perihelion:          32.09780910 +/-    0.0034
Aphelion:            53.38924814 +/-    0.0049
Period (y)              279.4562 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.16213333 +/-    0.0005
Ecliptic Y           -1.61661382 +/-    0.0000
Ecliptic Z            0.04310293 +/-    0.0000
Ecliptic XDOT        -0.00033754 +/-    0.0000
Ecliptic YDOT         0.00320205 +/-    0.0000
Ecliptic ZDOT        -0.00012078 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.20038964 +/-    0.0005
Geocenter to KBO     33.22268234 +/-    0.0005
# Hcoef:  7.21

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.

2000 10  02.344800 23 48 36.00   -01 09 14.3   22.0V 05TN74    645  C~2JxD      
2000 10  02.345630 23 48 36.00   -01 09 14.3   21.9V 05TN74    645  C~2JxD      
2000 10  02.348117 23 48 36.00   -01 09 14.3         05TN74    645  C~2JxD      
2002 10  30.205211 00 01 30.63   +00 04 19.7   22.5V 05TN74    645  C~2JxD      
2002 10  30.206040 00 01 30.63   +00 04 19.7   22.1V 05TN74    645  C~2JxD      
2002 10  30.208528 00 01 30.64   +00 04 19.7   23.6V 05TN74    645  C~2JxD      
2003 09  26.288359 00 11 56.54   +01 07 29.2   22.7V 05TN74    645  C~2JxD      
2003 09  26.289188 00 11 56.53   +01 07 29.2   21.9V 05TN74    645  C~2JxD      
2003 09  26.291676 00 11 56.54   +01 07 29.2   23.5V 05TN74    645  C~2JxD      
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      
2008 10  03.382164 00 50 40.46   +04 50 01.1   22.7V 05TN74    645  C~2JxD      
2008 10  03.382993 00 50 40.46   +04 50 01.1   21.9V 05TN74    645  C~2JxD      
2008 10  03.385481 00 50 40.46   +04 50 01.1         05TN74    645  C~2JxD      
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    -0.04       0.00    -0.24
  2   0.0000      0.00     0.03       0.00    -0.24
  3   0.0000      0.00     0.24       0.00    -0.24
  4   2.0749  12430.89    -0.19    -570.48    -0.22
  5   2.0749  12430.89    -0.13    -570.48    -0.22
  6   2.0749  12431.03     0.17    -570.54    -0.28
  7   2.9814  22626.83    -0.00    -828.56    -0.25
  8   2.9814  22626.69    -0.07    -828.50    -0.19
  9   2.9814  22626.83     0.30    -828.56    -0.25
 10   3.0551  20339.15     0.03    -846.63    -0.18
 11   3.0551  20339.01    -0.04    -846.57    -0.12
 12   3.0551  20338.69    -0.20    -846.54    -0.09
 13   3.1288  18689.13    -0.03    -860.61     0.60
 14   3.1288  18689.13     0.01    -860.61     0.60
 15   3.1288  18689.00    -0.02    -860.55     0.66
 16   5.0149  36810.95    -0.19   -1416.06     0.66
 17   5.0150  36806.93    -0.31   -1416.01     0.71
 18   5.0151  36803.16    -0.55   -1416.17     0.55
 19   5.0616  35338.47    -0.12   -1426.62    -1.06
 20   5.0617  35335.37    -0.50   -1425.63    -0.08
 21   5.0862  34654.55    -0.36   -1428.96     0.25
 22   5.0863  34653.52     0.65   -1428.63     0.57
 23   5.0890  34583.56     0.52   -1429.32     0.24
 24   5.0890  34580.99    -0.90   -1429.44     0.12
 25   5.1545  33300.57     0.46   -1436.03     0.10
 26   5.1547  33298.19     0.08   -1436.12    -0.01
 27   5.1600  33234.67     0.48   -1436.17     0.38
 28   5.8833  48745.96     0.04   -1673.80    -0.18
 29   5.8835  48741.11    -0.12   -1673.90    -0.24
 30   5.8860  48683.38     0.08   -1674.98    -0.20
 31   6.7734  57988.85     0.17   -1919.30    -0.16
 32   6.7736  57989.52     0.24   -1919.36    -0.12
 33   8.0028  61522.31     0.12   -2337.59    -0.18
 34   8.0028  61522.31     0.21   -2337.59    -0.17
 35   8.0028  61522.31     0.45   -2337.59    -0.17
 36   9.9576  80617.80    -0.40   -2987.57    -0.34
 37   9.9577  80613.30    -0.09   -2987.23     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.

05TN74    quality flag:3

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

axisobj        42.828    42.838    42.817
ecceobj         0.250     0.250     0.250
incobj          2.163     2.163     2.163
qmin           31.717    31.679    31.719
qmax           53.585    53.575    53.645
amean          42.327    42.327    42.327
amin           41.806    41.809    41.821
amax           42.922    42.926    42.897
emean           0.219     0.220     0.227
emin            0.143     0.144     0.185
emax            0.250     0.251     0.251
imean           5.240     5.081     4.308
imin            2.235     2.236     2.234
imax           10.857    11.116     8.223
excite_mean     0.242     0.242     0.241
fracstop        1.000     1.000     1.000
cjmean          3.013     3.013     3.013

libcent 0       176.2     175.5     177.8
libamp  0       117.7     127.4     117.4
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       211.2     223.6     204.5
kozaiamp         36.3      47.1      39.1