Cannabaceae

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Position of Σ 1694 (circled)
Position of Σ 1694 (circled)

Struve 1694 (Σ 1694, Struve 1694) is a double star in the constellation Camelopardalis.[1]

Σ 1694 is a double star, with components of magnitudes 5.3m and 5.9m:

Norton's Star Atlas describes the pair as yellowish and bluish.[1]

Σ 1694 was also known as 32H. Camelopardalis, Hevelius' 32nd of Camelopardalis. It is not Flamsteed's "32 Camelopardalis", which is ξ Aurigae. In the British Association Catalogue, the star pair are listed as being in Ursa Minor.[2]

Chinese name

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In Chinese, 北極 (Běi Jí), meaning North Pole, refers to an asterism consisting of Σ 1694, γ Ursae Minoris, β Ursae Minoris, 5 Ursae Minoris and 4 Ursae Minoris.[3] Consequently, Σ 1694 itself is known as 北極五 (Běi Jí wǔ, English: the Fifth Star of North Pole.),[4] representing 天樞 (Tiānshū), meaning Celestial Pivot.[5]

This star was regarded as the north star by the Chinese people from Han Dynasty to Song Dynasty.

References

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  1. ^ a b Norton, Arthur P. (1973). Norton's Star Atlas. p. 118. ISBN 0-85248-900-5.
  2. ^ British Association for the Advancement of Science; Francis Baily (1845). The Catalogue of Stars of the British Association for the Advancement of Science: Containing the Mean Right Ascensions and North Polar Distances of Eight Thousand Three Hundred and Seventy-seven Fixed Stars, Reduced to January 1, 1850: Together with Their Annual Precessions, Secular Variations and Proper Motions, as Well as the Logarithmic Constants for Computing Precession, Aberration and Nutation. With a Preface Explanatory of Their Construction and Application. R. and J. E. Taylor.
  3. ^ (in Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  4. ^ (in Chinese) 天樞 (北極)
  5. ^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 Archived 2010-08-10 at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.


source: https://en.wikipedia.org/wiki/Struve_1694

One thought on “Cannabaceae”

  1. Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
    View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction

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