Cetus

Cetus (/ˈstəs/) is a constellation. Its name refers to Cetus, a sea monster in Greek mythology, although it is often called 'the whale' today. Cetus is located in the region of the sky that contains other water-related constellations such as Aquarius, Pisces, and Eridanus.

Notable features

Ecliptic

Although Cetus is not generally considered part of the zodiac, the ecliptic passes less than a quarter of a degree from its constellation boundary, and thus the moon, planets, and even part of the sun may be in Cetus for brief periods of time. This is all the more true of asteroids, since their orbits usually have a greater inclination to the ecliptic than the moon and planets. For example, the asteroid 4 Vesta was discovered in this constellation in 1807.

Stars

The most notable star in Cetus is Mira ("the Wonderful"), designated Omicron Ceti, the first variable star to be discovered and the prototype of its class. Over a period of 332 days it reaches a maximum apparent magnitude of 3 - visible to the naked eye - and dips to a minimum magnitude of 10, invisible to the unaided eye. Its seeming appearance and disappearance gave it its common name, which means "the amazing one". Mira pulsates with a minimum size of 400 solar diameters and a maximum size of 500 solar diameters. 420 light-years from Earth, it was discovered by David Fabricius in 1596.

Cetus (Chinese astronomy)

The modern constellation Cetus lies across two of the quadrants, symbolized by the Black Tortoise of the North (北方玄武, Běi Fāng Xuán Wǔ) and the White Tiger of the West (西方白虎, Xī Fāng Bái Hǔ), that divide the sky in traditional Chinese uranography.

The name of the western constellation in modern Chinese is 鯨魚座 (jīng yú zuò), meaning "the whale constellation".

Stars

The map of Chinese constellation in constellation Cetus area consists of:

See also

  • Chinese astronomy
  • Traditional Chinese star names
  • Chinese constellations
  • References

    External links

  • Cetus – Chinese associations
  • 香港太空館研究資源
  • 中國星區、星官及星名英譯表
  • 天象文學
  • 台灣自然科學博物館天文教育資訊網
  • 中國古天文
  • 中國古代的星象系統
  • Cetus (disambiguation)

    Cetus can refer to:

  • The constellation Cetus
  • The former biotechnology company Cetus Corporation
  • Cetus (mythology), the monster sent to devour Andromeda which was slain by Perseus

  • Podcasts:

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