Heinrich Louis d'Arrest

{{Redirect|d'Arrest|the crater on the Moon|d'Arrest (crater)|the crater on Phobos|d'Arrest (Phobos crater)|the comet|6P/d'Arrest}}

{{Infobox scientist

|name = Heinrich Louis d'Arrest

|image = Heinrich Louis d'Arrest.jpg

|image_size = 150px

|caption = Heinrich Louis d'Arrest

|birth_date = 13 August 1822

|birth_place=Berlin

|death_date ={{death date and age|1875|6|14|1822|8|13|df=y}}

|death_place = Copenhagen

|residence =

|citizenship =

|nationality = German

|ethnicity =

|field =

|work_institutions =

|alma_mater =

|doctoral_advisor =

|doctoral_students = Thorvald N. Thiele

|known_for = Neptune

|prizes = Gold Medal of the Royal Astronomical Society
Lalande Prize (1844)

|religion =

|footnotes =

|signature =

}}

Heinrich Louis d'Arrest (13 August 1822 – 14 June 1875; {{IPA|de|daˈʁɛ}} Müller, August, Allgemeines Wörterbuch der Aussprache ausländischer Eigennamen (7th ed., 1903), p. 34.) was a German astronomer, born in Berlin. His name is sometimes given as Heinrich Ludwig d'Arrest.

Biography

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, nebulae, and galaxies, discovering NGC 1 in 1861 and NGC 26 and NGC 358 in 1865.

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.Lord Lindsay, "Address," Monthly Notices of the Royal Astronomical Society 39:4 (Feb. 14, 1879), p. 311.

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.{{cite book |title=The Biographical Encyclopedia of Astronomers |last=Hockey |first=Thomas |date=2009 |publisher=Springer Publishing |isbn=978-0-387-31022-0 |access-date=August 22, 2012 |url=http://www.springerreference.com/docs/html/chapterdbid/58330.html}} He died in Copenhagen, Denmark.

= Honours =

The crater D'Arrest on the Moon, the crater D'Arrest on the Martian satellite Phobos, as well as the asteroid 9133 d'Arrest were named after him.

References

External links

{{cite journal |url=https://articles.adsabs.harvard.edu/pdf/1875MNRAS..35..265. |journal=Monthly Notices of the Royal Astronomical Society |volume=35 |pages=265–275 |title=Address Delivered by the President, Professor Adams, on presenting the Gold Medal of the Society to Professor Heinrich d'Arrest |date=February 1875 |issue=4 |doi=10.1093/mnras/35.4.265 |doi-access=free |bibcode=1875MNRAS..35..265. |access-date=2024-10-24}}

=Obituaries=

{{cite journal |url=https://articles.adsabs.harvard.edu/pdf/1876MNRAS..36..155. |journal=Monthly Notices of the Royal Astronomical Society |volume=36 |pages=155–158 |title=Report of the Council to the Fifty-sixth Annual General Meeting |date=February 1876 |doi=10.1093/mnras/36.4.155 |doi-access=free |bibcode=1876MNRAS..36..155. |access-date=2024-10-24}}

{{cite journal |url=https://articles.adsabs.harvard.edu/pdf/1875AN.....86...64S |journal=Astronomische Nachrichten |language=de |volume=86 |pages=64 |title=Todes-Anzeige |first=H. C. F. C. |last=Schjellerup |date=June 1875 |issue=3–4 |doi=10.1002/asna.18750860306 |bibcode=1875AN.....86...64S |access-date=2024-10-24}}