Omicron Puppis

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Omicron Puppis
Diagram showing star positions and boundaries of the Puppis constellation and its surroundings
Cercle rouge 100%.svg

Location of ο Puppis (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Puppis
Right ascension 07h 48m 05.17s
Declination −25° 56' 13.8"
Apparent magnitude (V) +4.40
Distance 2470 ly
(757 pc)
Spectral type B1IV
Other designations
ο Puppis, ο Pup, Omicron Pup, CCDM J07481-2556A, CPD−25  2882, GC 10532, HD 63462, HIP 38070, HR 3034, HR 3045, IDS 07439-2541 A, PPM 253217, SAO 174558, WDS J07481-2556A.

Omicron Puppis (Omicron Pup, ο Puppis, ο Pup) is multiple star system in constellation of Puppis, with an apparent magnitude of +4.40. The primary component is a blue B-type subgiant. It is approximately 2470 light years from Earth.

Omicron Puppis is moving through the Galaxy at a speed of 26.9 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,800 and 32,000 light years from the center of the Galaxy.[1]

Omicron Puppis came closest to the Sun 8.7 million years ago when it had brightened to magnitude 3.99 from a distance of 1,162 light years.[1]

Naming[edit]

In Chinese, 弧矢 (Hú Shǐ), meaning Bow and Arrow,[2] refers to an asterism consisting of ο Puppis, δ Canis Majoris, η Canis Majoris, HD 63032, HD 65456, k Puppis, ε Canis Majoris, κ Canis Majoris and π Puppis. Consequently, ο Puppis itself is known as 弧矢五 (Hú Shǐ wǔ, English: the Fifth Star of Bow and Arrow.)[3]

References[edit]

  1. ^ a b Omicron Puppis (HIP 38070)
  2. ^ 弧矢 (Hú Shǐ) is westernized into Koo She. R.H. Allen had opinion that Koo She refers to the asterism including δ Velorum and ω Velorum. AEEA opinion is, δ Velorum is member of 天社 (Tiān Shè), meaning Celestial Earth God's Temple asterism and ω Velorum is not member of any asterisms. 天社 (Tiān Shè) is westernized into Tseen She and R.H.Allen used the term Tseen She for Chinese name of η Carinae. See Richard Hinckley Allen: Star Names — Their Lore and Meaning: Argo Navis and (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 17 日.
  3. ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 17 日