Orbit Fit and Astrometric record for 07TA418

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: 07TA418   
# Created Sun Oct 22 01:37:43 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   8.10y
# First observation: 2006/09/14
#  Last observation: 2014/10/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.002207   0.035953   0.000066  -0.000152   0.027672   0.000000
# Chi-squared of fit:     8.98 DOF:   60 RMS:  0.09
# Min/Max residuals:    -0.39    0.30
# Exact a, adot, b, bdot, g, gdot:
  2.028263E-05  3.354022E-02 -7.363303E-07 -9.616142E-05  2.715816E-02 -5.064204E-03
# Covariance matrix:
  5.8267E-13 -4.0419E-13 -5.2066E-16  5.4750E-15  1.0989E-13 -1.2445E-12
 -4.0419E-13  4.2307E-13  6.4759E-15 -4.5881E-15  7.9844E-14  1.3574E-12
 -5.2066E-16  6.4759E-15  8.1509E-14 -2.2626E-14  8.2221E-15  2.2224E-14
  5.4750E-15 -4.5881E-15 -2.2626E-14  1.3549E-14  6.2116E-16 -1.5040E-14
  1.0989E-13  7.9844E-14  8.2221E-15  6.2116E-16  2.4822E-13  2.9009E-13
 -1.2445E-12  1.3574E-12  2.2224E-14 -1.5040E-14  2.9009E-13  4.5016E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -22.409469   31.435701    0.646794   -0.294740   -0.715133  2453992.853414
# Heliocentric elements and errors
Epoch:              2453990.5000  =  2006/09/12
Mean Anomaly:          351.36356 +/-     0.004
Argument of Peri:      297.79893 +/-     0.011
Long of Asc Node:      121.67158 +/-     0.001
Inclination:            21.96366 +/-     0.000
Eccentricity:         0.49948651 +/-    0.0001
Semi-Major Axis:     71.86749071 +/-    0.0122
Time of Perihelion: 2459329.1247 +/-       2.0
Perihelion:          35.97064863 +/-    0.0082
Aphelion:           107.76433278 +/-    0.0191
Period (y)              609.2660 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.03840602 +/-    0.0005
Ecliptic Y           17.60217742 +/-    0.0003
Ecliptic Z          -14.03720711 +/-    0.0003
Ecliptic XDOT        -0.00216462 +/-    0.0000
Ecliptic YDOT         0.00263212 +/-    0.0000
Ecliptic ZDOT         0.00018561 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.53912185 +/-    0.0005
Geocenter to KBO     36.82134400 +/-    0.0007
# Hcoef:  7.15

The following table shows the complete astrometric record for 07TA418. 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 (07TA418) followed by the observatory code and reference code for the source of the astrometry.

2006 09  14.35266  02 27 55.70   -09 05 21.7   22.3R 07TA418   807  Cx2653      
2006 09  16.38925  02 27 49.51   -09 06 44.6   22.6R 07TA418   807  Cx2653      
2007 10  04.33334  02 34 05.08   -08 38 27.1   22.6R 07TA418   807  Cx2653      
2007 10  08.34192  02 33 47.74   -08 40 51.7   22.6R 07TA418   807  Cx2653      
2007 10  08.37703  02 33 47.59   -08 40 52.9   22.4I 07TA418   807  Cx2653      
2007 10  14.33609  02 33 20.37   -08 44 15.9   22.6R 07TA418   807  Cx2653      
2007 10  14.36201  02 33 20.25   -08 44 16.8   22.2I 07TA418   807  Cx2653      
2007 11  03.33264  02 31 41.42   -08 53 20.7   22.6R 07TA418   807  Cx2653      
2007 11  05.31594  02 31 31.35   -08 54 00.6   22.6R 07TA418   807  Cx2653      
2007 11  05.34573  02 31 31.19   -08 54 01.1   21.9I 07TA418   807  Cx2653      
2007 11  07.35201  02 31 21.01   -08 54 39.1   22.6R 07TA418   807  Cx2653      
2007 11  09.14120  02 31 11.99   -08 55 10.0   22.1I 07TA418   807  Cx2653      
2007 11  09.16289  02 31 11.89   -08 55 10.6   22.7R 07TA418   807  Cx2653      
2007 11  11.14855  02 31 01.89   -08 55 42.5   22.7R 07TA418   807  Cx2653      
2007 11  15.14721  02 30 42.00   -08 56 37.5   22.2I 07TA418   807  Cx2653      
2007 11  15.16015  02 30 41.93   -08 56 37.7   22.9R 07TA418   807  Cx2653      
2007 11  17.13643  02 30 32.25   -08 57 00.2   22.5R 07TA418   807  Cx2653      
2007 11  19.29311  02 30 21.79   -08 57 21.2   22.6R 07TA418   807  Cx2653      
2007 11  19.33174  02 30 21.60   -08 57 21.4   22.2I 07TA418   807  Cx2653      
2007 12  01.22981  02 29 27.24   -08 58 08.4   22.7R 07TA418   807  Cx2653      
2007 12  05.14711  02 29 10.89   -08 57 57.8   22.7R 07TA418   807  Cx2653      
2007 12  05.16972  02 29 10.80   -08 57 57.9   22.3I 07TA418   807  Cx2653      
2007 12  07.17487  02 29 02.78   -08 57 47.2   22.7R 07TA418   807  Cx2653      
2007 12  09.11873  02 28 55.28   -08 57 33.9   22.6R 07TA418   807  Cx2653      
2007 12  09.13668  02 28 55.20   -08 57 33.6   22.2I 07TA418   807  Cx2653      
2007 12  11.11958  02 28 47.81   -08 57 16.6   22.7R 07TA418   807  Cx2653      
2007 12  11.14056  02 28 47.73   -08 57 16.4   22.2I 07TA418   807  Cx2653      
2008 09  26.30726  02 41 58.60   -07 53 07.0   24.2R 07TA418   250  S~06BK      
2008 09  26.31421  02 41 58.58   -07 53 07.2         07TA418   250  S~06BK      
2008 09  26.32046  02 41 58.56   -07 53 07.5         07TA418   250  S~06BK      
2008 09  26.32740  02 41 58.53   -07 53 07.7         07TA418   250  S~06BK      
2014 10  22.35370  03 25 41.95   -03 47 07.0   22.1R 07TA418   G37  C~1BxQ      
2014 10  22.44696  03 25 41.51   -03 47 09.7         07TA418   G37  C~1BxQ      

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    -0.16       0.00     0.14
  2   0.0056   -114.59     0.09     -46.34    -0.03
  3   1.0540   5696.60     0.04    -377.39     0.06
  4   1.0650   5405.03    -0.05    -423.63     0.00
  5   1.0651   5402.52     0.08    -423.99    -0.01
  6   1.0814   4953.27    -0.01    -474.20     0.01
  7   1.0815   4951.29     0.01    -474.42    -0.06
  8   1.1362   3387.98     0.02    -476.77    -0.39
  9   1.1416   3234.12     0.13    -462.56    -0.04
 10   1.1417   3231.72     0.06    -462.20     0.07
 11   1.1472   3077.00    -0.14    -445.66    -0.03
 12   1.1521   2940.86     0.07    -428.42     0.30
 13   1.1521   2939.27     0.14    -428.47     0.02
 14   1.1576   2789.16    -0.08    -407.17     0.05
 15   1.1685   2493.54    -0.02    -356.91    -0.02
 16   1.1685   2492.49    -0.10    -356.74    -0.03
 17   1.1739   2350.10     0.05    -328.31    -0.09
 18   1.1799   2197.37     0.05    -294.49    -0.12
 19   1.1800   2194.66     0.06    -293.70     0.02
 20   1.2125   1422.39    -0.05     -59.94    -0.06
 21   1.2233   1198.62    -0.01      33.49     0.02
 22   1.2233   1197.33    -0.03      33.86    -0.18
 23   1.2288   1089.46    -0.08      84.83     0.07
 24   1.2341    989.70     0.04     135.59    -0.11
 25   1.2342    988.70    -0.05     136.28     0.09
 26   1.2396    891.74     0.01     189.94     0.02
 27   1.2397    890.70    -0.01     190.54     0.02
 28   2.0341  13249.78    -0.10    -289.12     0.06
 29   2.0341  13249.43     0.00    -289.20     0.09
 30   2.0341  13249.04     0.02    -289.38     0.02
 31   2.0342  13248.55    -0.02    -289.41     0.11
 32   8.1040  56403.54    -0.04    -728.47    -0.02
 33   8.1043  56395.89     0.04    -728.54    -0.00

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.

07TA418    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        73.835    73.872    73.797
ecceobj         0.512     0.512     0.512
incobj         21.958    21.958    21.958
qmin           35.313    34.880    35.171
qmax          112.039   112.553   111.766
amean          72.672    72.657    72.426
amin           71.603    71.515    71.428
amax           74.220    74.128    73.831
emean           0.499     0.502     0.497
emin            0.487     0.486     0.481
emax            0.513     0.520     0.514
imean          20.963    20.732    21.055
imin           20.342    19.646    20.224
imax           21.521    21.511    22.076
excite_mean     0.614     0.614     0.613
fracstop        1.000     1.000     1.000
cjmean          2.928     2.928     2.928

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       144.2     186.5     196.3
kozaiamp        180.0     180.0     179.9