Orbit Fit and Astrometric record for 03FD128

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: 03FD128   
# Created Thu Oct 19 01:37:22 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:  11.03y
# First observation: 2002/03/05
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.001213   0.029023  -0.000118   0.002605   0.026994   0.000000
# Chi-squared of fit:    58.50 DOF:   30 RMS:  0.32
# Min/Max residuals:    -0.66    0.75
# Exact a, adot, b, bdot, g, gdot:
  1.790428E-05  2.819047E-02  1.337051E-06  2.525491E-03  2.734065E-02  3.583306E-04
# Covariance matrix:
  4.0866E-13 -2.0229E-13  1.8619E-14 -1.6415E-14  2.1978E-13 -5.3625E-13
 -2.0229E-13  1.6610E-13 -1.5395E-14  1.4492E-14 -4.2421E-14  4.7669E-13
  1.8619E-14 -1.5395E-14  1.3697E-13 -1.8635E-14  6.5799E-15 -4.5500E-14
 -1.6415E-14  1.4492E-14 -1.8635E-14  6.7913E-15 -3.0285E-15  4.3071E-14
  2.1978E-13 -4.2421E-14  6.5799E-15 -3.0285E-15  4.9796E-13 -8.9089E-14
 -5.3625E-13  4.7669E-13 -4.5500E-14  4.3071E-14 -8.9089E-14  1.4175E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.427113  164.282140   -0.008297    0.024612   -0.991012  2452338.729200
# Heliocentric elements and errors
Epoch:              2452330.5000  =  2002/02/25
Mean Anomaly:           33.68308 +/-     0.094
Argument of Peri:      339.72516 +/-     0.100
Long of Asc Node:      149.12720 +/-     0.001
Inclination:             5.29924 +/-     0.000
Eccentricity:         0.02719444 +/-    0.0001
Semi-Major Axis:     38.42729329 +/-    0.0044
Time of Perihelion: 2444189.6935 +/-      22.7
Perihelion:          37.38228457 +/-    0.0054
Aphelion:            39.47230201 +/-    0.0056
Period (y)              238.2143 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -36.15266420 +/-    0.0009
Ecliptic Y           10.17074953 +/-    0.0003
Ecliptic Z            0.91098187 +/-    0.0000
Ecliptic XDOT        -0.00080165 +/-    0.0000
Ecliptic YDOT        -0.00271037 +/-    0.0000
Ecliptic ZDOT         0.00025393 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.56712876 +/-    0.0009
Geocenter to KBO     36.57557014 +/-    0.0009
# Hcoef:  7.28

The following table shows the complete astrometric record for 03FD128. 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 (03FD128) followed by the observatory code and reference code for the source of the astrometry.

2002 03  05.228457 11 04 18.41   +07 30 10.1   22.7V 03FD128   645  C~2Jx8      
2002 03  05.229286 11 04 18.41   +07 30 10.1   23.3V 03FD128   645  C~2Jx8      
2002 03  05.231774 11 04 18.42   +07 30 10.1   22.8V 03FD128   645  C~2Jx8      
2003 03  31.30333  11 08 27.19   +07 14 05.2   22.7R 03FD128   695  Ch8428      
2003 03  31.41504  11 08 26.65   +07 14 08.4         03FD128   695  Ch8428      
2003 04  01.24512  11 08 22.97   +07 14 31.8         03FD128   695  Ch8428      
2003 04  20.99538  11 07 05.87   +07 22 32.0   21.5R 03FD128   304  Ch8428      
2003 04  21.05537  11 07 05.67   +07 22 33.3         03FD128   304  Ch8428      
2003 05  31.32412  11 06 03.91   +07 28 19.1   23.1R 03FD128   568  Ci1570      
2003 06  01.30980  11 06 04.30   +07 28 15.5         03FD128   568  Ci1570      
2003 06  02.27772  11 06 04.78   +07 28 11.3         03FD128   568  Ci1570      
2004 02  22.37938  11 17 41.82   +06 24 19.7   23.3R 03FD128   695  Cq7030      
2004 02  22.42094  11 17 41.59   +06 24 21.0         03FD128   695  Cq7030      
2006 02  23.28322  11 29 57.91   +05 24 27.5   22.9R 03FD128   304  Cq7030      
2006 02  23.30282  11 29 57.82   +05 24 27.9         03FD128   304  Cq7030      
2013 03  14.28267  12 11 12.73   +01 58 29.1   22.9R 03FD128   695  C~0ud4      
2013 03  14.39217  12 11 12.18   +01 58 32.5         03FD128   695  C~0ud4      
2013 03  14.45273  12 11 11.88   +01 58 34.7         03FD128   695  C~0ud4      

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    -0.33       0.00     0.03
  2   0.0000      0.00    -0.26       0.00     0.02
  3   0.0000      0.14     0.08       0.06     0.08
  4   1.0707   3786.18     0.75     543.76     0.47
  5   1.0710   3777.53     0.32     543.59     0.32
  6   1.0733   3717.96     0.65     543.89     0.31
  7   1.1274   2474.12     0.03     541.38    -0.18
  8   1.1275   2470.87    -0.01     541.43    -0.09
  9   1.2378   1489.92    -0.23     504.33    -0.66
 10   1.2405   1496.66    -0.30     503.26    -0.60
 11   1.2431   1504.87    -0.30     502.15    -0.61
 12   1.9689  12571.83     0.02    1022.95     0.36
 13   1.9690  12568.15    -0.33    1022.80     0.15
 14   3.9728  24174.79    -0.15    2073.53     0.35
 15   3.9728  24173.38     0.00    2073.36     0.15
 16  11.0255  64985.51     0.05    5910.33     0.13
 17  11.0258  64975.71     0.04    5910.01    -0.21
 18  11.0259  64970.20    -0.06    5910.17    -0.07

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.

03FD128    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        38.178    38.191    38.165
ecceobj         0.022     0.022     0.022
incobj          5.313     5.313     5.313
qmin           36.580    36.593    36.567
qmax           40.271    40.292    40.238
amean          38.338    38.350    38.324
amin           38.056    38.067    38.046
amax           38.626    38.637    38.615
emean           0.020     0.020     0.020
emin            0.000     0.000     0.000
emax            0.043     0.043     0.042
imean           3.296     3.289     3.299
imin            1.671     1.660     1.683
imax            4.796     4.794     4.794
excite_mean     0.062     0.062     0.062
fracstop        1.000     1.000     1.000
cjmean          3.038     3.038     3.038

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       177.8     177.6     178.2
kozaiamp        179.9     180.0     179.9