M-type star · red dwarf
GJ 581
3500 K
temperature
0.30 R☉
radius
0.29 M☉
mass
0.012 L☉
luminosity
How long to get there · 20.5 ly away
At light speed, about 21 years to reach this system.
See the full survival timeline (jet to folding spacetime) →Size vs the Sun
How it compares with our Sun
0.61×
as hot as the Sun
0.30×
the Sun's width
0.29×
the Sun's mass
0.01×
the Sun's light output
Worlds orbiting this star
- Explore →GJ 581 eRocky world · ESI 0.491.38 R⊕ · 3.1 days year
- Explore →GJ 581 bIce / gas giant · ESI 0.364.79 R⊕ · 5.4 days year
- Explore →GJ 581 cSub-Neptune · ESI 0.612.50 R⊕ · 13 days year
Explore from here · roam the neighborhood
Zoom out: system → (soon) galaxy arm, and the host black hole at the galaxy's heart.
Can you see it tonight?
SMALL TELESCOPE NEEDED
Brightness mag 10.6To see it 4-6" (100-150 mm) telescope
Illustration generated from GJ 581's temperature, not a photograph.