Xi Herculis

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Xi Herculis (ξ Her, 92 Her, HD 163993, SAO 85590, HR 6703) is a star located within the constellation of Hercules. Its declination is 29° 15′, its right ascension is 17h 58m, and its apparent magnitude is 3.7. Xi Herculis is about 160 light-years from Earth.

This star has 2.26 times the mass of the Sun, with a projected rotational velocity of 3.2 km s−1.[1] it is radiating 62 times the luminosity of the Sun from the outer atmosphere at an effective temperature of 4,963 K.[2]

Chinese name[edit]

In R.H.Allen's version, this star, together with ν Her and 99 Her (b Herculis) were represent states Zhongshan (or Chung Shan' "the Middle Mountain").,[3] but in Chinese literature, it was only for ο Her.[4]


  1. ^ Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics, 361: 614–628, Bibcode:2000A&A...361..614P 
  2. ^ Mallik, Sushma V. (December 1999), "Lithium abundance and mass", Astronomy and Astrophysics, 352: 495–507, Bibcode:1999A&A...352..495M 
  3. ^ Star Names - R.H.Allen p.246
  4. ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 6 月 6 日

External links[edit]