Nu Boötis
(Redirected from Ν Boötis)
Location of the ν Boötis pair (circled)
The Bayer designation Nu Boötis (ν Boo / ν Boötis) is shared by two star systems, in the constellation Boötes:
They are separated by 0.17° on the sky. They have almost identical visual magnitudes, but contrasting colours: ν1 is a yellow giant star, while ν2 is a close binary with two white main sequence stars.
Both stars were members of asterism 七公 (Qī Gōng), Seven Excellencies, Heavenly Market enclosure.[1]
Ptolemy considered Nu Boötis to be shared by Hercules, and Bayer assigned it a designation in both constellations: Nu Boötis (ν Boo) and Psi Herculis (ψ Her). When the modern constellation boundaries were fixed in 1930, the latter designation dropped from use.[2]
References
[edit]- ^ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 26 日
- ^ "Bayer's Uranometria and Bayer letters". Archived from the original on 2019-03-15. Retrieved 2012-05-18.
This set index article includes a list of related items that share the same name (or similar names).
If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.
If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.