- Heinrich Louis d'Arrest
-
"d'Arrest" redirects here. For the lunar crater, see d'Arrest (crater).
Heinrich Louis d'Arrest 
Heinrich Louis d'ArrestBorn July 13, 1822
BerlinDied June 14, 1875 (aged 52)
CopenhagenNationality German Known for Neptune Notable awards Gold Medal of the Royal Astronomical Society Heinrich Louis d'Arrest (July 13, 1822 – June 14, 1875; German pronunciation: [daˈʁɛ] [1]) was a German astronomer, born in Berlin. His name is sometimes given as Heinrich Ludwig d'Arrest.
Asteroids discovered: 1 76 Freia October 21, 1862 While still a student at the University of Berlin, d'Arrest was party to Johann Gottfried Galle's search for Neptune. On September 23, 1846, he suggested that a recently drawn chart of the sky, in the region of Urbain Le Verrier's predicted location, could be compared with the current sky to seek the displacement characteristic of a planet, as opposed to a stationary star. Neptune was discovered that very night.
D'Arrest's later work at the Leipzig Observatory led him, in 1851, to the discovery of the comet named for him (formally designated 6P/d'Arrest). He also studied asteroids (he discovered 76 Freia) and nebulae.
In 1864 D'Arrest made an unsuccessful search for Martian satellites, and posited an upper limit of 70 minutes of arc as the distance from Mars within which a moon should be sought.[2]
He won the Gold Medal of the Royal Astronomical Society in 1875.
He died in Copenhagen, Denmark.
The crater D'Arrest on the Moon is named after him, as well as a crater on the Martian satellite Phobos and the asteroid 9133 d'Arrest.
Contents
References
External links
Obituaries
- AN 86 (1875) 63/64 (one paragraph, in German)
- MNRAS 36 (1876) 155
Further reading
- Dieke, Sally (1970). "Heinrich Louis D' Arrest". Dictionary of Scientific Biography. 1. New York: Charles Scribner's Sons. pp. 295–296. ISBN 0684101149.
This article about a German astronomer is a stub. You can help Wikipedia by expanding it.
