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: 02FX6 # Created Fri Apr 19 01:10:42 2024 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 18.62d # First observation: 2002/03/20 # Last observation: 2002/04/08 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # Chi-squared of fit: 21.94 DOF: 8 RMS: 0.34 # Min/Max residuals: -0.78 0.76 # Exact a, adot, b, bdot, g, gdot: 1.326321E-05 1.864402E-02 -4.387957E-06 -7.541921E-03 2.146820E-02 0.000000E+00 # Covariance matrix: 3.0381E-11 4.0220E-08 5.1490E-14 -1.9024E-11 6.4370E-09 0.0000E+00 4.0220E-08 5.3937E-05 6.9035E-11 -2.5507E-08 8.6305E-06 0.0000E+00 5.1490E-14 6.9035E-11 3.7765E-13 -7.7465E-12 1.1047E-11 0.0000E+00 -1.9024E-11 -2.5507E-08 -7.7465E-12 4.6059E-10 -4.0815E-09 0.0000E+00 6.4370E-09 8.6305E-06 1.1047E-11 -4.0815E-09 1.3810E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.3020E-04 # lat0 lon0 xBary yBary zBary JD0 -0.270758 -175.526835 0.078249 -0.004778 -0.993727 2452353.974243 # Heliocentric elements and errors Epoch: 2452350.5000 = 2002/03/17 Mean Anomaly: 1.52485 +/- 167.446 Argument of Peri: 178.98180 +/- 233.344 Long of Asc Node: 3.71691 +/- 0.262 Inclination: 22.01680 +/- 7.833 Eccentricity: 0.05794166 +/- 0.5439 Semi-Major Axis: 50.49775336 +/- 26.4447 Time of Perihelion: 2451795.3241 +/- 192035.3 Perihelion: 47.57182959 +/- 37.0826 Aphelion: 53.42367714 +/- 39.2071 Period (y) 358.8528 +/- 281.89 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -47.43400180 +/- 2.5420 Ecliptic Y -3.62744840 +/- 0.1986 Ecliptic Z -0.22030853 +/- 0.0121 Ecliptic XDOT 0.00018156 +/- 0.0015 Ecliptic YDOT -0.00237124 +/- 0.0008 Ecliptic ZDOT -0.00096160 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 47.57301173 +/- 2.5346 Geocenter to KBO 46.58051303 +/- 2.5498 # Hcoef: 6.95
The following table shows the complete astrometric record for 02FX6. 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 (02FX6) followed by the observatory code and reference code for the source of the astrometry.
2002 03 20.47350 12 15 59.49 -02 01 34.8 23.5R 02FX6 568 Cf5861 2002 03 20.52786 12 15 59.27 -02 01 33.4 23.8R 02FX6 568 Cf5861 2002 03 20.56595 12 15 59.10 -02 01 32.4 23.7R 02FX6 568 Cf5861 2002 03 22.47947 12 15 51.19 -02 00 49.9 02FX6 568 Cf5861 2002 04 08.02916 12 14 43.27 -01 54 46.7 22.3R 02FX6 807 Ch1599 2002 04 08.09013 12 14 43.05 -01 54 43.9 02FX6 807 Ch1599
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 0.10 0.00 -0.24
2 0.0001 -3.58 0.13 -0.02 -0.01
3 0.0003 -6.32 -0.07 -0.12 0.07
4 0.0055 -132.02 -0.18 -8.16 0.20
5 0.0508 -1210.76 0.12 -78.93 -0.78
6 0.0510 -1214.90 -0.10 -77.67 0.76
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.
02FX6 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0