Orbit Fit and Astrometric record for 03GF55

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: 03GF55    
# Created Mon Dec 18 02:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   9.95y
# First observation: 2003/04/01
#  Last observation: 2013/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000036   0.019974  -0.000003   0.001496   0.021866   0.000000
# Chi-squared of fit:    30.06 DOF:   24 RMS:  0.25
# Min/Max residuals:    -0.51    0.59
# Exact a, adot, b, bdot, g, gdot:
  1.500260E-05  1.996688E-02  9.310895E-07  1.493960E-03  2.197373E-02  1.103389E-03
# Covariance matrix:
  6.5750E-13 -3.3200E-13  1.5850E-14 -1.8028E-14  6.6308E-13 -1.2138E-12
 -3.3200E-13  2.7213E-13 -1.4453E-14  1.7269E-14 -2.3543E-13  1.1424E-12
  1.5850E-14 -1.4453E-14  1.4960E-13 -2.3453E-14  9.7197E-15 -6.4119E-14
 -1.8028E-14  1.7269E-14 -2.3453E-14  1.1126E-14 -9.1670E-15  7.7468E-14
  6.6308E-13 -2.3543E-13  9.7197E-15 -9.1670E-15  1.2465E-12 -6.6340E-13
 -1.2138E-12  1.1424E-12 -6.4119E-14  7.7468E-14 -6.6340E-13  5.1048E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.192566 -152.616467    0.273559    0.070163   -0.957418  2452730.895893
# Heliocentric elements and errors
Epoch:              2452730.5000  =  2003/04/01
Mean Anomaly:          106.44795 +/-     0.223
Argument of Peri:      291.39204 +/-     0.198
Long of Asc Node:      163.41459 +/-     0.002
Inclination:             5.94014 +/-     0.000
Eccentricity:         0.05518960 +/-    0.0001
Semi-Major Axis:     45.62916467 +/-    0.0103
Time of Perihelion: 2419441.7870 +/-      68.9
Perihelion:          43.11090952 +/-    0.0105
Aphelion:            48.14741982 +/-    0.0116
Period (y)              308.2279 +/-      0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -41.28126599 +/-    0.0021
Ecliptic Y          -21.07041016 +/-    0.0010
Ecliptic Z            3.32717631 +/-    0.0002
Ecliptic XDOT         0.00102823 +/-    0.0000
Ecliptic YDOT        -0.00227061 +/-    0.0000
Ecliptic ZDOT         0.00019589 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.46692596 +/-    0.0019
Geocenter to KBO     45.50888992 +/-    0.0023
# Hcoef:  6.59

The following table shows the complete astrometric record for 03GF55. 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 (03GF55) followed by the observatory code and reference code for the source of the astrometry.

2003 04  01.39515  13 47 44.23   -06 37 34.0   23.0R 03GF55    695  Ci2134      
2003 04  01.46495  13 47 43.95   -06 37 32.1         03GF55    695  Ci2134      
2003 05  30.00827  13 43 59.15   -06 16 29.5   22.1R 03GF55    807  Ci2134      
2003 05  30.09978  13 43 58.87   -06 16 27.9         03GF55    807  Ci2134      
2003 05  31.04840  13 43 56.09   -06 16 15.2         03GF55    807  Ci2134      
2004 04  15.41712  13 51 10.58   -06 51 02.4         03GF55    675  Ck7396      
2004 04  15.44053  13 51 10.48   -06 51 02.0         03GF55    675  Ck7396      
2004 04  16.43393  13 51 06.39   -06 50 37.6         03GF55    675  Ck7396      
2005 04  10.36459  13 55 58.54   -07 12 38.3   23.0R 03GF55    695  Cn3103      
2005 04  10.44919  13 55 58.16   -07 12 36.5         03GF55    695  Cn3103      
2005 04  11.33265  13 55 54.62   -07 12 14.4         03GF55    695  Cn3103      
2005 04  15.22784  13 55 38.60   -07 10 39.6   23.2R 03GF55    304  Cn3314      
2005 04  15.26735  13 55 38.43   -07 10 38.6         03GF55    304  Cn3314      
2013 03  13.41628  14 32 52.34   -09 49 27.2   23.3R 03GF55    G37  C~0qSU      
2013 03  13.47198  14 32 52.18   -09 49 26.3         03GF55    G37  C~0qSU      

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    -0.13       0.00     0.03
  2   0.0002     -4.57    -0.22       0.29     0.17
  3   0.1605  -3585.55    -0.04     -14.38    -0.29
  4   0.1607  -3590.02    -0.18     -14.37     0.00
  5   0.1633  -3633.29     0.02     -17.32    -0.30
  6   1.0404   3160.97     0.30     334.70     0.36
  7   1.0405   3159.44     0.33     334.55     0.18
  8   1.0432   3093.82     0.59     335.81     0.39
  9   2.0259   7632.70    -0.18     634.53    -0.00
 10   2.0262   7626.76    -0.51     634.23    -0.42
 11   2.0286   7569.60     0.09     636.39     0.30
 12   2.0392   7312.74    -0.01     641.30    -0.24
 13   2.0393   7310.02    -0.08     641.34    -0.22
 14   9.9494  42287.59     0.09    3023.67     0.11
 15   9.9496  42284.95    -0.07    3023.74    -0.08

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.

03GF55    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.248    45.278    45.218
ecceobj         0.056     0.056     0.057
incobj          5.960     5.960     5.960
qmin           42.214    42.246    42.220
qmax           49.104    49.131    49.162
amean          45.570    45.600    45.539
amin           45.202    45.232    45.179
amax           45.950    45.975    45.922
emean           0.057     0.057     0.057
emin            0.045     0.044     0.045
emax            0.070     0.069     0.071
imean           5.591     5.588     5.595
imin            5.172     5.176     5.176
imax            5.970     5.969     5.977
excite_mean     0.113     0.113     0.113
fracstop        1.000     1.000     1.000
cjmean          3.105     3.105     3.105

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       179.6     179.3     180.0
kozaiamp        179.9     179.9     180.0