Gliese 581
Also known as HO Librae, HO Lib, GJ 581, BD-07 4003, Wolf 562, Zkh 217, NSV 7023, HIP 74995
Red dwarf star in the constellation Libra
Key facts
- Constellation
- Libra
- Right ascension
- 15 19 26.82694
- Declination
- −07 ° 43 ′ 20.1895 ″
- Apparent magnitude v
- 10.56 to 10.58
- Evolutionary stage
- Main sequence
- Spectral type
- M3V
- Variable type
- BY Dra
via Wikipedia infobox
Wikidata facts
- Image
- Gliese 581 Artist's impression.jpg
Sources (2)
via Wikidata · CC0
~19 min read
Article
Gliese 581 (/ˈɡliːzə/) is a red dwarf star of spectral type M3V which hosts a planetary system, 20.5 light-years (6.3 parsecs) away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 101st closest known star system to the Sun. Gliese 581 is one of the oldest, least active M dwarfs known. Its low stellar activity improves the likelihood of its three planets retaining significant atmospheres, and lessens the sterilizing impact of stellar flares.
History of observations