Table 1: Orbital parameters of (3200) Phaethon and 2005 UD (equinox J2000).
Object (3200) Phaethon 2005 UD
osculation epoch (TT) 2005 Aug. 18.0 -2581 Aug. 18.0 2005 Aug. 18.0
mean anomaly M $115\hbox{$.\!\!^\circ$ }81866$ $117\hbox{$.\!\!^\circ$ }04318$ $353\hbox{$.\!\!^\circ$ }33143$
perihelion distance q (AU) 0.1398186 0.1534601 0.1629124
semimajor axis a (AU) 1.2713838 1.2737898 1.2747596
eccentricity e 0.8900265 0.8795248 0.8722015
argument of perihelion $\omega $ $321\hbox{$.\!\!^\circ$ }99112$ $207\hbox{$.\!\!^\circ$ }64364$ $207\hbox{$.\!\!^\circ$ }46774$
longitude of ascending node $\Omega $ $265\hbox{$.\!\!^\circ$ }41395$ $22\hbox{$.\!\!^\circ$ }12450$ $19\hbox{$.\!\!^\circ$ }84550$
inclination i $22\hbox{$.\!\!^\circ$ }17403$ $28\hbox{$.\!\!^\circ$ }32959$ $28\hbox{$.\!\!^\circ$ }74946$
# of observations 1496   287
arc (oppositions) 1983-2005 (19)   Oct. 22-Nov. 17
RMS residual 0''.58   0''.25
absolute mag. H 14.5   17.5
reference JPL this work Nakano (2005)


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