Orbit Fit and Astrometric record for 02FW6

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: 02FW6     
# Created Fri Nov 16 02:08:00 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   54 observations of   54
# Arc:  15.26y
# First observation: 2002/03/20
#  Last observation: 2017/06/22
# Chi-squared of fit:    68.63 DOF:  102 RMS:  0.20
# Min/Max residuals:    -0.73    0.57
# Exact a, adot, b, bdot, g, gdot:
  1.431002E-05  2.361553E-02 -1.052643E-06  1.259587E-03  2.538366E-02 -1.127940E-03
# Covariance matrix:
  1.7413E-13 -3.3560E-14  1.4254E-15 -1.2241E-15  7.0378E-15 -6.4062E-14
 -3.3560E-14  3.0000E-14 -1.6392E-15  1.5849E-15  2.6129E-14  8.1021E-14
  1.4254E-15 -1.6392E-15  1.4449E-13 -1.0949E-14 -1.1478E-15 -4.5852E-15
 -1.2241E-15  1.5849E-15 -1.0949E-14  1.0712E-15  1.4637E-15  4.4246E-15
  7.0378E-15  2.6129E-14 -1.1478E-15  1.4637E-15  8.6611E-14  7.1416E-14
 -6.4062E-14  8.1021E-14 -4.5852E-15  4.4246E-15  7.1416E-14  2.2628E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.827293 -175.978163    0.071198    0.031626   -0.993750  2452353.929593
# Heliocentric elements and errors
Epoch:              2452354.5000  =  2002/03/21
Mean Anomaly:          205.34425 +/-     0.013
Argument of Peri:      190.09296 +/-     0.010
Long of Asc Node:      153.66429 +/-     0.001
Inclination:             3.53465 +/-     0.000
Eccentricity:         0.11905514 +/-    0.0000
Semi-Major Axis:     36.39127662 +/-    0.0013
Time of Perihelion: 2486802.0182 +/-       3.8
Perihelion:          32.05870818 +/-    0.0014
Aphelion:            40.72384506 +/-    0.0017
Period (y)              219.5352 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.27430589 +/-    0.0005
Ecliptic Y           -2.75539726 +/-    0.0000
Ecliptic Z            1.25616771 +/-    0.0000
Ecliptic XDOT         0.00029585 +/-    0.0000
Ecliptic YDOT        -0.00253320 +/-    0.0000
Ecliptic ZDOT         0.00013213 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.38801863 +/-    0.0005
Geocenter to KBO     39.39548195 +/-    0.0005
# Hcoef:  7.61

The following table shows the complete astrometric record for 02FW6. 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 (02FW6) followed by the observatory code and reference code for the source of the astrometry.

2002 03  20.42885  12 17 39.88   +00 04 42.8   23.7R 02FW6     568  Cf5861      
2002 03  20.49199  12 17 39.58   +00 04 44.6   24.1R 02FW6     568  Cf5861      
2002 03  20.53396  12 17 39.38   +00 04 45.7   23.8R 02FW6     568  Cf5861      
2002 03  22.47601  12 17 30.30   +00 05 46.9         02FW6     568  Cf5861      
2002 03  22.51609  12 17 30.10   +00 05 48.1         02FW6     568  Cf5861      
2002 06  03.19792  12 13 16.92   +00 32 12.5         02FW6     675  Cf8969      
2002 06  08.18611  12 13 12.25   +00 32 32.7         02FW6     675  Cf8969      
2002 06  08.26042  12 13 12.19   +00 32 32.9         02FW6     675  Cf8969      
2006 04  26.07273  12 35 21.30   -01 30 54.1   22.3R 02FW6     807  Cr3565      
2006 04  26.15609  12 35 20.95   -01 30 51.7         02FW6     807  Cr3565      
2006 04  27.09725  12 35 17.07   -01 30 28.3         02FW6     807  Cr3565      
2007 05  08.13557  12 39 43.41   -01 54 37.0   23.6R 02FW6     304  Cu8842      
2007 05  08.18408  12 39 43.24   -01 54 36.0         02FW6     304  Cu8842      
2015 02  17.58038  13 27 03.069  -06 16 37.34  23.4r 02FW6     568  C~2lRS      
2015 02  17.62132  13 27 02.969  -06 16 36.57  23.6r 02FW6     568  C~2lRS      
2015 02  20.61441  13 26 55.548  -06 15 39.73  23.4r 02FW6     568  C~2lRS      
2015 03  18.55881  13 25 24.594  -06 05 09.05  23.3r 02FW6     568  C~2lRS      
2015 03  20.55033  13 25 16.030  -06 04 12.99  23.2r 02FW6     568  C~2lRS      
2015 03  23.32657  13 25 03.83   -06 02 53.5   23.3R 02FW6     695  C~1Q3C      
2015 03  23.39024  13 25 03.55   -06 02 51.6         02FW6     695  C~1Q3C      
2015 03  23.45279  13 25 03.26   -06 02 49.8         02FW6     695  C~1Q3C      
2015 04  11.48481  13 23 33.949  -05 53 28.34  23.2r 02FW6     568  C~2lRS      
2015 04  13.34921  13 23 24.974  -05 52 33.24  23.2r 02FW6     568  C~2lRS      
2015 04  13.39016  13 23 24.770  -05 52 32.06  23.3r 02FW6     568  C~2lRS      
2015 04  13.45967  13 23 24.427  -05 52 29.98  23.1r 02FW6     568  C~2lRS      
2015 04  18.28021  13 23 01.16   -05 50 08.8         02FW6     W84  C~1Tia      
2015 04  19.27164  13 22 56.42   -05 49 40.1   24.1V 02FW6     W84  C~1Tia      
2015 04  19.39003  13 22 55.859  -05 49 37.10  23.2r 02FW6     568  C~2lRS      
2015 04  19.50158  13 22 55.314  -05 49 33.87  23.1r 02FW6     568  C~2lRS      
2015 04  21.27595  13 22 46.85   -05 48 42.8         02FW6     W84  C~1Tia      
2015 04  22.27234  13 22 42.09   -05 48 14.3         02FW6     W84  C~1Tia      
2015 05  18.25525  13 20 49.038  -05 37 24.76  23.2r 02FW6     568  C~2lRS      
2015 06  20.26264  13 19 22.054  -05 30 15.56  23.6r 02FW6     568  C~2lRS      
2015 06  20.30355  13 19 21.995  -05 30 15.28  23.5r 02FW6     568  C~2lRS      
2015 06  22.30724  13 19 19.535  -05 30 07.54  23.3r 02FW6     568  C~2lRS      
2015 07  14.25857  13 19 16.224  -05 31 09.00  23.7r 02FW6     568  C~2lRS      
2015 07  20.24993  13 19 23.005  -05 32 12.18  23.4r 02FW6     568  C~2lRS      
2015 07  20.26062  13 19 23.020  -05 32 12.35  23.7r 02FW6     568  C~2lRS      
2016 02  04.56329  13 32 45.139  -06 47 40.17  23.8w 02FW6     568  C~2lRS      
2016 02  10.55122  13 32 37.252  -06 46 24.88  23.6w 02FW6     568  C~2lRS      
2016 02  10.60087  13 32 37.169  -06 46 24.19  23.8w 02FW6     568  C~2lRS      
2016 03  11.53218  13 31 12.596  -06 36 06.25  23.8w 02FW6     568  C~2lRS      
2016 04  03.42104  13 29 32.171  -06 25 20.99  23.6w 02FW6     568  C~2lRS      
2016 04  09.40077  13 29 03.484  -06 22 24.37  23.4w 02FW6     568  C~2lRS      
2016 05  28.26791  13 25 31.914  -06 02 16.32  23.8w 02FW6     568  C~2lRS      
2016 05  28.27195  13 25 31.907  -06 02 16.16  23.7w 02FW6     568  C~2lRS      
2016 06  04.34936  13 25 10.975  -06 00 31.56  23.6w 02FW6     568  C~2lRS      
2016 06  04.35340  13 25 10.968  -06 00 31.48  23.6w 02FW6     568  C~2lRS      
2016 06  27.27271  13 24 30.692  -05 57 49.92  23.9w 02FW6     568  C~2lRS      
2016 07  06.30847  13 24 27.473  -05 58 05.08  23.8w 02FW6     568  C~2lRS      
2017 02  24.63168  13 37 27.059  -07 09 55.44        02FW6     568  C~2lRS      
2017 03  29.44523  13 35 21.871  -06 56 03.16  23.5w 02FW6     568  C~2lRS      
2017 06  22.26639  13 29 55.088  -06 25 54.76  23.6w 02FW6     568  C~2lRS      
2017 06  22.27110  13 29 55.082  -06 25 54.68  23.8w 02FW6     568  C~2lRS      

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     0.23       0.00     0.32
  2   0.0002      0.00     0.23       0.00     0.14
  3   0.0003      0.00     0.22       0.00    -0.08
  4   0.0056      0.00     0.19       0.00     0.27
  5   0.0057      0.00     0.05       0.00     0.21
  6   0.2047      0.00    -0.53       0.00    -0.50
  7   0.2184      0.00    -0.10       0.00    -0.44
  8   0.2186      0.00    -0.12       0.00    -0.43
  9   4.1003      0.00     0.22       0.00    -0.03
 10   4.1006      0.00     0.25       0.00     0.22
 11   4.1031      0.00     0.13       0.00    -0.43
 12   5.1327      0.00    -0.73       0.00     0.57
 13   5.1328      0.00    -0.59       0.00     0.52
 14  12.9149      0.00     0.04       0.00    -0.03
 15  12.9150      0.00     0.04       0.00    -0.01
 16  12.9232      0.00     0.04       0.00    -0.02
 17  12.9942      0.00     0.01       0.00    -0.05
 18  12.9996      0.00     0.02       0.00    -0.06
 19  13.0072      0.00     0.05       0.00     0.16
 20  13.0074      0.00     0.18       0.00     0.23
 21  13.0076      0.00     0.08       0.00     0.23
 22  13.0597      0.00    -0.01       0.00    -0.09
 23  13.0648      0.00     0.21       0.00    -0.06
 24  13.0649      0.00     0.17       0.00    -0.08
 25  13.0651      0.00     0.15       0.00    -0.05
 26  13.0783      0.00    -0.19       0.00     0.05
 27  13.0810      0.00     0.10       0.00     0.11
 28  13.0813      0.00     0.05       0.00    -0.10
 29  13.0817      0.00     0.05       0.00    -0.09
 30  13.0865      0.00     0.34       0.00    -0.04
 31  13.0892      0.00     0.10       0.00     0.14
 32  13.1604      0.00     0.08       0.00     0.04
 33  13.2507      0.00     0.05       0.00    -0.11
 34  13.2509      0.00     0.03       0.00    -0.02
 35  13.2563      0.00     0.16       0.00    -0.10
 36  13.3164      0.00     0.13       0.00    -0.19
 37  13.3328      0.00     0.06       0.00    -0.06
 38  13.3329      0.00     0.07       0.00    -0.10
 39  13.8785      0.00    -0.09       0.00    -0.02
 40  13.8949      0.00    -0.08       0.00     0.04
 41  13.8951      0.00    -0.07       0.00     0.03
 42  13.9770      0.00    -0.18       0.00     0.03
 43  14.0397      0.00    -0.05       0.00    -0.07
 44  14.0560      0.00    -0.03       0.00    -0.04
 45  14.1898      0.00    -0.07       0.00    -0.12
 46  14.1899      0.00     0.02       0.00    -0.03
 47  14.2092      0.00    -0.08       0.00    -0.03
 48  14.2092      0.00    -0.01       0.00    -0.00
 49  14.2720      0.00    -0.05       0.00    -0.07
 50  14.2967      0.00    -0.15       0.00     0.07
 51  14.9355      0.00    -0.28       0.00     0.04
 52  15.0254      0.00    -0.25       0.00     0.08
 53  15.2576      0.00    -0.19       0.00     0.05
 54  15.2576      0.00    -0.17       0.00     0.11

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.

02FW6    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.203    36.203    36.203
ecceobj         0.125     0.125     0.125
incobj          3.543     3.543     3.543
qmin           31.173    31.178    31.175
qmax           42.065    42.091    42.063
amean          36.478    36.478    36.478
amin           36.127    36.135    36.129
amax           36.861    36.857    36.860
emean           0.122     0.122     0.122
emin            0.102     0.102     0.102
emax            0.143     0.143     0.143
imean           5.734     5.735     5.735
imin            2.410     2.410     2.410
imax           10.552    10.576    10.573
excite_mean     0.161     0.161     0.161
fracstop        1.000     1.000     1.000
cjmean          2.997     2.997     2.997

libcent 0       181.1     180.7     179.9
libamp  0        68.0      68.3      67.6
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       177.6     177.6     177.5
kozaiamp        180.0     180.0     179.9