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Gliese 581

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…

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Apparent magnitude (V)
10.56 to 10.58[note 1]
B−V color index
1.61
Constellation
Libra
Declination
−07° 43′ 20.1895″
Evolutionary stage
Main sequence
Right ascension
15h 19m 26.82694s

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Overview

History of observations

Characteristics

Planetary system

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Gliese 581

Nodes76
Edges75
Triples132
Avg. degree1.97
Density0.026316
Components1

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Gliese 581

Top relations

related to External links · 44
Gliese 581 → April, Archived, ArizonaEarth-like, Astronomers Claim Discovery, Constellation Libra, Ctv, December, Earth-like Planet Archived, February, Gl, Gliese, HO Librae Archived, July, Life Archived, LouisExtrasolar Planet Interactions Archived, Lunar, Major Discovery, May, New Planet Could Harbor, October
related to Characteristics · 24
Gliese 581 → An M-class, BD, Beta Librae, Earth, For, From, Gliese, Gliese Catalogue, Goldilocks Zone, HO Librae, However, It, Its, Libra, M3V, Nearby Stars, Other, Procyon, Sirius, Sun
related to history · 23
Gliese 581 → April, August, BD, Bonner Durchmusterung, By, Detected, Earth, Earths, Eduard Schönfeld's Southern Durchmusterung, ESO/HARPS, France, Further, Geneva, Gliese, Grenoble University, HARPS, Mars, Observatory, SD, Sun
related to SETI · 15
Gliese 581 → Active SETI, AMFE, Bebo, Earth, Gliese, Message, National Space Agency, October, Ragbir Bhathal, SETI, The, The Gliese, Ukraine, Using, Yevpatoria RT-70
related to Planetary system · 6
Gliese 581 → Gliese, However, In, Solar System, The, The Gliese
related to Planets · 6
Gliese 581 → Analysis, AU, Gliese, Models, Most, The
Apparent magnitude (V) · 1
Gliese 581 → 10.56 to 10.58[note 1]
B−V color index · 1
Gliese 581 → 1.61
Constellation · 1
Gliese 581 → Libra
Declination · 1
Gliese 581 → −07° 43′ 20.1895″

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Important terminology

gliese planet 581 star system planets earth mass planetary orbit known 581c habitable using zone discovered data red sun radial

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Gliese 581Apparent magnitude (V)10.56 to 10.58[note 1]1.00infobox
Gliese 581B−V color index1.611.00infobox
Gliese 581ConstellationLibra1.00infobox
Gliese 581Declination−07° 43′ 20.1895″1.00infobox
Gliese 581Evolutionary stageMain sequence1.00infobox
Gliese 581Right ascension15h 19m 26.82694s1.00infobox
Gliese 581Spectral typeM3V1.00infobox
Gliese 581Variable typeBY Dra[note 2]1.00infobox
Gliese 581is avery old star0.90text
Sirius or Procyoninstance ofIt does not have an individual name0.80text
Gliese 581 has a much lower mass than the Suninstance ofto the Sun.An M-class dwarf star0.80text
causing the core region of the star to fuse hydrogen at a significantly lower rateinstance ofto the Sun.An M-class dwarf star0.80text

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