The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 02FW6
# Created Fri May 2 02:36:36 2008
# Orbit generated from Bernstein formalism
# Fitting 13 observations of 13
# Arc: 5.13y
# First observation: 2002/03/20
# Last observation: 2007/05/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000005 0.023653 -0.000004 0.001266 0.025048 0.000000
# Chi-squared of fit: 26.29 DOF: 20 RMS: 0.25
# Min/Max residuals: -0.63 0.43
# Exact a, adot, b, bdot, g, gdot:
1.485385E-05 2.361977E-02 -1.315573E-06 1.260023E-03 2.538558E-02 -1.080095E-03
# Covariance matrix:
3.0204E-13 -9.1643E-14 2.5570E-15 -4.2731E-15 2.7955E-13 -7.3341E-13
-9.1643E-14 1.2741E-12 -6.3984E-15 7.5517E-14 2.9809E-13 1.2923E-11
2.5570E-15 -6.3984E-15 1.9104E-13 -4.3289E-14 4.6288E-15 -7.0975E-14
-4.2731E-15 7.5517E-14 -4.3289E-14 2.8244E-14 1.4461E-14 7.8325E-13
2.7955E-13 2.9809E-13 4.6288E-15 1.4461E-14 8.4765E-13 2.4689E-12
-7.3341E-13 1.2923E-11 -7.0975E-14 7.8325E-13 2.4689E-12 1.3404E-10
# lat0 lon0 xBary yBary zBary JD0
1.827293 -175.978163 0.071198 0.031626 -0.993750 2452353.929593
# Heliocentric elements and errors
Epoch: 2452350.5000 = 2002/03/17
Mean Anomaly: 204.30507 +/- 0.189
Argument of Peri: 190.88404 +/- 0.188
Long of Asc Node: 153.66935 +/- 0.003
Inclination: 3.53515 +/- 0.000
Eccentricity: 0.11832588 +/- 0.0002
Semi-Major Axis: 36.38742223 +/- 0.0042
Time of Perihelion: 2487023.9723 +/- 41.7
Perihelion: 32.08184848 +/- 0.0088
Aphelion: 40.69299598 +/- 0.0093
Period (y) 219.5003 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.27133892 +/- 0.0014
Ecliptic Y -2.75521009 +/- 0.0001
Ecliptic Z 1.25606251 +/- 0.0000
Ecliptic XDOT 0.00029072 +/- 0.0000
Ecliptic YDOT -0.00253382 +/- 0.0000
Ecliptic ZDOT 0.00013233 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.38501720 +/- 0.0014
Geocenter to KBO 39.39244305 +/- 0.0014
# Hcoef: 7.82
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
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 -0.03 0.00 0.43 2 0.0002 -4.84 0.05 -0.13 0.27 3 0.0003 -8.04 0.12 -0.31 0.07 4 0.0056 -157.34 -0.04 1.82 0.37 5 0.0057 -160.57 -0.14 1.73 0.27 6 0.2047 -4275.74 -0.23 -50.68 -0.63 7 0.2184 -4348.08 0.14 -59.92 -0.40 8 0.2186 -4348.99 0.12 -60.10 -0.41 9 4.1003 16927.34 0.01 1048.10 -0.05 10 4.1006 16921.53 -0.07 1048.23 0.19 11 4.1031 16858.42 0.08 1046.66 -0.46 12 5.1327 21135.31 -0.09 1298.37 0.15 13 5.1328 21132.55 0.06 1298.28 0.16
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 36.199 36.199 36.199 ecceobj 0.124 0.124 0.124 incobj 3.544 3.544 3.544 qmin 31.206 31.205 31.206 qmax 42.092 42.091 42.094 amean 36.478 36.478 36.478 amin 36.117 36.119 36.115 amax 36.868 36.863 36.872 emean 0.121 0.121 0.121 emin 0.103 0.103 0.103 emax 0.143 0.143 0.143 imean 5.705 5.705 5.705 imin 2.396 2.396 2.396 imax 10.584 10.589 10.578 fracstop 1.000 1.000 1.000 cjmean 2.998 2.998 2.998 libcent 0 180.1 179.9 180.4 libamp 0 70.5 70.6 70.3 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 178.4 178.3 178.4 kozaiamp 179.9 179.9 180.0