Arend-Roland, Comet

Arend-Roland, Comet

      long-period comet remarkable for its anomalous second tail, which projects toward rather than away from the Sun. It was one of the brightest naked-eye comets of the 20th century. It was discovered photographically on the night of Nov. 8–9, 1956, by S. Arend and P. Roland at the Royal Observatory, Uccle, Belg. Its perihelion passage (i.e., its closest approach to the Sun) occurred on April 20, 1957. Because it was discovered months before perihelion, lengthy observations could be carried out. The anomalous tail appeared for a few nights late in April, changing direction from night to night and appearing as a sharp spike aimed at the Sun. This was an effect of perspective, of viewing edgewise a fan of debris from the comet, scattered ahead of it along its orbit.

* * *


Universalium. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Comet Arend–Roland — C/1956 R1 (Arend–Roland) Discovery Discovered by: Sylvain Arend, Georges Roland Discovery date: 1956 Alternate designations: 1957 III, 1956h, C/1956 R1 …   Wikipedia

  • Comet Arend-Roland — Infobox Comet name=C/1956 R1 (Arend Roland) Taken at the Armagh Observatory on April 25, 1957 [http://star.arm.ac.uk/archive exhibit/4.html] discoverer=Sylvain Arend, Georges Roland discovery date=1956 designations=Great Comet of 1957, 1957 III,… …   Wikipedia

  • Komet Arend-Roland — C/1956 R1 (Arend Roland) Eigenschaften des Orbits (Animation) Orbittyp …   Deutsch Wikipedia

  • Sylvain Julien Victor Arend — (August 6 1902–February 18 1992) was a Belgian astronomer born in Robelmont, Luxembourg. His main interest was astrometry.Together with Georges Roland, he discovered the bright comet C/1956 R1 (Arend Roland). He also discovered or co discovered… …   Wikipedia

  • Great Comet — A Great Comet is a comet which becomes particularly bright and is very spectacular to a casual observer on Earth. Great comets appear, on average, once every decade. Predicting whether a comet will become a great comet is notoriously difficult,… …   Wikipedia

  • Antitail — Comet Lulin antitail to the left, ion tail to right An Antitail is a term used in astronomy to describe one of the three tails, all pointing in different directions, which may appear to emanate from a comet as it passes close to the Sun. The… …   Wikipedia

  • C/1956 R1 (Аренда — C/1956 R1 (Аренда–Ролана) Открытие Первооткрыватель: Сильвен Аренд, Жорж Ролан Дата открытия: 1956 Альтернативные обозначения: 1957 III …   Википедия

  • List of non-periodic comets — Non periodic comets (or long period comets) are comets that do not have confirmed observations at more than one perihelion passage,[1] and thus generally have orbital periods of 200 years or more. They include single apparition comets that pass… …   Wikipedia

  • Список долгопериодических комет — Ниже приведён список некоторых долгопериодических комет. Долгопериодическими считаются кометы с периодом, как правило, более 200 лет. Обозначение Русское название Международное название Первооткрыватель, или человек, имя которого носит комета… …   Википедия

  • Арен, Сильвен Жюльен Виктор — Сильвен Жюльен Виктор Арен Sylvain Julien Victor Arend Дата рождения: 6 августа 1902(1902 08 06) Место рождения: fr:Robelmont, провинция Люксемб …   Википедия

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”