4544 Xanthus

Xanthus

Orbit diagram of Xanthus asteroid with location as of March 6, 2013
Discovery
Discovered by	Henry Holt and Norman G. Thomas
Discovery site	Palomar Observatory
Discovery date	31 March 1989
Designations
MPC designation	4544
Alternative names	1989 FB
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	7629 days (20.89 yr)
Aphelion	1.3023 AU (194.82 Gm)
Perihelion	0.78120 AU (116.866 Gm)
Semi-major axis	1.0418 AU (155.85 Gm)
Eccentricity	0.25012
Orbital period	1.06 yr (388.38 d)
Mean anomaly	269.26925°
Mean motion	0° 55^m 36.923^s / day
Inclination	14.146°
Longitude of ascending node	24.00998°
Argument of perihelion	333.75°
Earth MOID	0.173705 AU (25.9859 Gm)
Jupiter MOID	4.14002 AU (619.338 Gm)
Jupiter Tisserand parameter	5.835
Physical characteristics
Dimensions	1.3 km
Mean radius	0.65 km
Rotation period	37.65 h (1.569 d)
Absolute magnitude (H)	17.1

4544 Xanthus (1989 FB) is an Apollo NEO discovered on March 31, 1989 by Henry Holt and Norman G. Thomas at Palomar Observatory.

References

1. "4544 Xanthus (1989 FB)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 14 April 2016.

External links

• JPL Small-Body Database Browser on 4544 Xanthus
• Benner, et al. - Radar Detection of Near-Earth Asteroids 2062 Aten, 2101 Adonis, 3103 Eger, 4544 Xanthus, and 1992 QN (1997)
• 4544 Xanthus at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters