小行星(22)12001

moon of asteroid Kalliope

Linus, formal designation (22) Kalliope I, is an asteroid moon that orbits the large M-type asteroid 22 Kalliope. It was discovered on August 29, 2001, by astronomers Jean-Luc Margot and Michael E. Brown with the Keck telescope, in Hawaii. Another team also detected the moon with the Canada-France-Hawaii Telescope on September 2, 2001. Both telescopes are on Mauna Kea. It received the provisional designation S/2001 (22) 1, until it was named. The naming proposal appeared in the discovery paper and was approved by the International Astronomical Union in July 2003. Although the naming proposal referred to the mythological Linus, son of the muse Calliope and the inventor of melody and rhythm, the name was also meant to honor Linus Torvalds, inventor of the Linux operating system kernel, and Linus van Pelt, a character in the Peanuts comic strip.

摘自英文维基百科「Linus (moon)」（英文维基百科，暂无中文条目），CC BY-SA 4.0

英文维基百科 Wikidata

类型: 小行星卫星
发现 / 发明时间: 2001 年
发现者 / 提出者: 让-吕克·马戈、迈克尔·E·布朗
命名来源: Linus of Thrace
学科: 天文学

百科正文

本条目暂无中文维基百科条目，下面是英文维基百科原文。

With an estimated 28 ± 2 km (17 ± 1 mi) diameter, Linus is very large compared to most asteroid moons, and would be a sizable asteroid by itself. The only known larger moons in the main belt are the smaller components of the double asteroids 617 Patroclus and 90 Antiope.

It has been estimated that Linus' orbit precesses at quite a rapid rate, making one cycle in several years. This is attributed primarily to the non-spherical shape of Kalliope. Linus's brightness has varied appreciably between observations, which may indicate that its shape is elongated.

Linus may have formed out of impact ejecta from a collision with Kalliope, or a fragment captured after disruption of a parent asteroid (a proto-Kalliope).

以上内容摘自英文维基百科「Linus (moon)」，按 CC BY-SA 4.0 使用，去掉了参考文献、外部链接等尾部小节，公式改写成了纯文本。全文、配图和出处见原文。