Joseph Ashbrook

Joseph Ashbrook

Joseph Ashbrook (April 4 1918 – August 4 1980) was an American astronomer.

Ashbrook was born in Philadelphia, Pennsylvania.

He was one of the first to study Cepheid variables as tools for establishing galactic distances. He was a longtime member of the AAVSO.

He went through old archives of observations from centuries past to determine a highly precise value for the rotation period of Mars —to within a few thousandths of a second.

He co-discovered the periodic comet 47P/Ashbrook-Jackson. Ashbrook crater on the Moon and the asteroid 2157 Ashbrook are named after him.

He served as editor of "Sky and Telescope" magazine and wrote the "Astronomical Scrapbook" column for it.

External links

Obituaries

* [http://adsabs.harvard.edu//full/seri/JAVSO/0009//0000043.000.html JAVSO 9 (1980) 43]
* "Sky and Telescope" 60 (1980) 281


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  • Joseph Ashbrook — (4 de abril de 1918 4 de agosto de 1980) fue un astrónomo estadounidense. Ashbrook nació en Filadelfia, Pensilvania. Fue de las primeras personas en estudiar las estrellas variables cefeidas, como herramientas para establecer distancias… …   Wikipedia Español

  • Joseph Ashbrook — (* 4. April 1918 in Philadelphia, Pennsylvania; † 4. August 1980 ) war ein US amerikanischer Astronom. Er war ein langjähriges Mitglied der American Association of Variable Star Observers (AAVSO). Ashbrook gehörte zu den ersten, die die Cepheiden …   Deutsch Wikipedia

  • Joseph Ashbrook — (né le 4 avril 1918 à Philadelphie en Pennsylvanie et mort le 4 août 1980) est un astronome américain. Il a été l un des premiers à utiliser les Céphéides en tant qu outil pour la détermination des distances intergalactiques.… …   Wikipédia en Français

  • Ashbrook (Cratère) — Ashbrook Localisation Astre Lune Coordonnées 81°  24’  00’’ Sud 112°  30’  00’’ Ouest [1] …   Wikipédia en Français

  • Ashbrook (cratere) — Ashbrook (cratère) Ashbrook Localisation Astre Lune Coordonnées 81°  24’  00’’ Sud 112°  30’  00’’ Ouest [1] …   Wikipédia en Français

  • Ashbrook (cratère) — Ashbrook Localisation Astre Lune Coordonnées …   Wikipédia en Français

  • Ashbrook — is a surname, and may refer to:* Dana Ashbrook, American actor * Daphne Ashbrook, American actress * Jean Spencer Ashbrook, American Congresswoman * John M. Ashbrook, American Congressman * Joseph Ashbrook, American astronomer * Larry Gene… …   Wikipedia

  • Ashbrook — steht für: Personen: Daphne Ashbrook (* 1963), US amerikanische Schauspielerin Jean Spencer Ashbrook (* 1934), US amerikanische Politikerin (Republikanerin) Joseph Ashbrook (1918–1980), US amerikanischer Astronom Ort in den Vereinigten Staaten:… …   Deutsch Wikipedia

  • Ashbrook (crater) — lunar crater data latitude=81.4 N or S=S longitude=112.5 E or W=W diameter=156 km depth= Unknown colong=125 eponym=Joseph AshbrookAshbrook is a large lunar impact crater that is located in the vicinity of the south pole on the far side of the… …   Wikipedia

  • Ashbrook (Mondkrater) — Eigenschaften Breite 81,4° S Länge 112,8° W Durchmesser 156 km Tiefe unbekannt Selenografische Länge 125° bei Sonnenaufgang Benannt nach Jose …   Deutsch Wikipedia

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