4544 Xanthus , provisional designation , is an

asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

, classified as

near-Earth object A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU). ...

of the

Apollo group Apollo Education Group, Inc. is an American corporation based in the South Phoenix area of Phoenix, Arizona, with an additional corporate office in Chicago, Illinois. The company owns and operates several higher-learning institutions, including ...

, approximately 1.3 kilometers in diameter. It was discovered on 31 March 1989, by astronomers

Henry Holt Henry Holt may refer to: *Henry Holt (North Dakota politician) (1887–1944), lieutenant governor *Henry Holt (publisher) (1840–1926), American publisher and author **Henry Holt and Company, Holt's publishing company *Henry E. Holt (born 1929), ...

and Norman Thomas at the

Palomar Observatory Palomar Observatory is an astronomical research observatory in San Diego County, California, United States, in the Palomar Mountain Range. It is owned and operated by the California Institute of Technology (Caltech). Research time at the observat ...

in California.

References

External links

Benner, et al. - Radar Detection of Near-Earth Asteroids 2062 Aten, 2101 Adonis, 3103 Eger, 4544 Xanthus, and 1992 QN (1997)
* * * 004544 Discoveries by Henry E. Holt Discoveries by Norman G. Thomas Named minor planets 004544 19890331 20231021 {{NE-asteroid-stub