Orbit Fit and Astrometric record for 04PT117

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: 04PT117   
# Created Mon Oct 23 01:37:32 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:   9.14y
# First observation: 2004/08/15
#  Last observation: 2013/10/06
Preliminary a, adot, b, bdot, g, gdot:
   0.000144   0.021988   0.000001   0.000285   0.023167   0.000000
# Chi-squared of fit:    17.91 DOF:   32 RMS:  0.17
# Min/Max residuals:    -0.48    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.532596E-05  2.217318E-02 -4.283384E-08  2.871683E-04  2.346627E-02  7.186955E-04
# Covariance matrix:
  2.7548E-13 -1.5377E-13  1.8084E-15 -1.8148E-15 -6.9557E-14 -6.3867E-13
 -1.5377E-13  1.7887E-13 -2.6033E-15  2.7619E-15 -6.5311E-14  9.1314E-13
  1.8084E-15 -2.6033E-15  1.3876E-13 -2.2990E-14  1.6333E-15 -1.4297E-14
 -1.8148E-15  2.7619E-15 -2.2990E-14  8.6645E-15 -2.0757E-15  1.5348E-14
 -6.9557E-14 -6.5311E-14  1.6333E-15 -2.0757E-15  4.2081E-13 -5.5855E-13
 -6.3867E-13  9.1314E-13 -1.4297E-14  1.5348E-14 -5.5855E-13  5.0072E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.009187  -53.078830   -0.279122   -0.017162   -0.977607  2453232.837463
# Heliocentric elements and errors
Epoch:              2453230.5000  =  2004/08/13
Mean Anomaly:          110.68621 +/-     0.171
Argument of Peri:      192.04605 +/-     0.158
Long of Asc Node:      359.91258 +/-     0.008
Inclination:             1.24137 +/-     0.000
Eccentricity:         0.04404297 +/-    0.0001
Semi-Major Axis:     42.85141012 +/-    0.0054
Time of Perihelion: 2421728.5733 +/-      48.3
Perihelion:          40.96410667 +/-    0.0059
Aphelion:            44.73871358 +/-    0.0063
Period (y)              280.5149 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.40205340 +/-    0.0007
Ecliptic Y          -34.67564062 +/-    0.0009
Ecliptic Z           -0.75052574 +/-    0.0000
Ecliptic XDOT         0.00211699 +/-    0.0000
Ecliptic YDOT         0.00147954 +/-    0.0000
Ecliptic ZDOT         0.00003213 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.58935381 +/-    0.0009
Geocenter to KBO     42.61436571 +/-    0.0012
# Hcoef:  6.91

The following table shows the complete astrometric record for 04PT117. 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 (04PT117) followed by the observatory code and reference code for the source of the astrometry.

2004 08  15.33672  20 38 20.79   -19 31 08.1   23.5g 04PT117   568  C~0VDr      
2004 08  15.36789  20 38 20.65   -19 31 08.6   23.5g 04PT117   568  C~0VDr      
2004 08  15.39461  20 38 20.53   -19 31 09.1   23.3g 04PT117   568  C~0VDr      
2004 08  16.30448  20 38 16.41   -19 31 23.8         04PT117   568  C~0VDr      
2005 07  26.46374  20 45 05.71   -19 04 41.0   22.9r 04PT117   568  C~0VDr      
2005 07  26.49379  20 45 05.55   -19 04 41.6   23.0r 04PT117   568  C~0VDr      
2005 07  26.52333  20 45 05.40   -19 04 42.0   23.1r 04PT117   568  C~0VDr      
2005 07  29.34214  20 44 52.12   -19 05 33.3         04PT117   568  C~0VDr      
2005 07  29.34421  20 44 52.09   -19 05 33.4   22.9r 04PT117   568  C~0VDr      
2006 07  26.25712  20 50 16.54   -18 43 20.7         04PT117   675  C~0VDr      
2006 07  26.30436  20 50 16.31   -18 43 21.5         04PT117   675  C~0VDr      
2007 06  02.45028  20 58 34.26   -18 08 01.0         04PT117   696  C~0VDr      
2007 06  03.44885  20 58 32.44   -18 08 09.7         04PT117   696  C~0VDr      
2007 06  03.45299  20 58 32.42   -18 08 09.9         04PT117   696  C~0VDr      
2007 09  16.18538  20 51 43.03   -18 35 57.9         04PT117   675  C~0VDr      
2007 09  16.22982  20 51 42.89   -18 35 58.4         04PT117   675  C~0VDr      
2013 10  05.12455  21 20 48.78   -16 23 02.7   23.1R 04PT117   695  C~0zda      
2013 10  05.24528  21 20 48.50   -16 23 03.4         04PT117   695  C~0zda      
2013 10  06.13487  21 20 46.47   -16 23 12.1         04PT117   695  C~0zda      

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    -0.08       0.00     0.05
  2   0.0001     -2.04    -0.02       0.02     0.04
  3   0.0002     -3.81     0.02      -0.04    -0.03
  4   0.0026    -63.88     0.05       0.51    -0.01
  5   0.9449   5949.53     0.26      52.90     0.08
  6   0.9450   5947.18     0.03      52.91     0.09
  7   0.9451   5945.02    -0.05      53.09     0.24
  8   0.9528   5749.75     0.12      53.06    -0.09
  9   0.9528   5749.32    -0.18      53.07    -0.08
 10   1.9437  10549.79    -0.14     111.60    -0.48
 11   1.9438  10546.42    -0.20     111.71    -0.38
 12   2.7957  17978.70    -0.02     198.22     0.32
 13   2.7984  17951.15     0.16     197.15     0.21
 14   2.7984  17950.81    -0.05     197.04     0.10
 15   3.0851  11856.78     0.01     204.97    -0.01
 16   3.0853  11854.73     0.10     205.03    -0.01
 17   9.1384  38493.43     0.04     583.38    -0.14
 18   9.1387  38489.24     0.26     583.97     0.25
 19   9.1411  38457.71    -0.31     584.71    -0.13

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.

04PT117    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.007    43.023    42.991
ecceobj         0.038     0.038     0.038
incobj          1.237     1.237     1.237
qmin           40.420    40.444    40.397
qmax           45.825    45.882    45.876
amean          43.046    43.064    43.030
amin           42.725    42.731    42.704
amax           43.374    43.408    43.374
emean           0.038     0.038     0.037
emin            0.018     0.019     0.019
emax            0.057     0.057     0.058
imean           2.252     2.246     2.257
imin            1.177     1.186     1.168
imax            3.031     3.023     3.037
excite_mean     0.056     0.056     0.056
fracstop        1.000     1.000     1.000
cjmean          3.086     3.087     3.086

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       174.5     173.9     174.9
kozaiamp        180.0     180.0     180.0