Heinrich Louis d'Arrest: German astronomer (1822 - 1875) | Biography, Facts, Information, Career, Wiki, Life
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Heinrich Louis d'Arrest
German astronomer

Heinrich Louis d'Arrest

Heinrich Louis d'Arrest
The basics

Quick Facts

Intro German astronomer
Was Astronomer Educator
From Germany
Field Academia Science
Gender male
Birth 13 July 1822, Berlin, Germany
Death 14 June 1875, Copenhagen, Capital Region of Denmark, Denmark, Kingdom of Denmark (aged 52 years)
Star sign Cancer
The details (from wikipedia)


Heinrich Louis d'Arrest (13 August 1822 – 14 June 1875; German pronunciation: [daˈʁɛ] ) was a German astronomer, born in Berlin. His name is sometimes given as Heinrich Ludwig d'Arrest.


While still a student at the University of Berlin, d'Arrest was party to Johann Gottfried Galle's search for Neptune. On 23 September 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, discovering 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.

He won the Gold Medal of the Royal Astronomical Society in 1875.

In 1857, he married Auguste Emilie Möbius, daughter of his then supervisor, August Ferdinand Möbius. 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.

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