Star Map
Field of View
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Star Density
0.0
Observe
1Physical Properties
Magnitude
10.56
Spectral Type
M3V
Star Color
Red
(B-V 1.30)
Distance
20.3 ± 0.3 ly
Abs. Magnitude
11.6
(est.)
Luminosity
0.002 L☉
(est.)
Radius
0.29 R☉
(est.)
Radial Velocity
-9.2 km/s
approaching
Parallax
160.91 mas
± 2.62
Proper Motion
RA: -1227.67 Dec: -97.78 mas/yr
(μ=1231.6)
extreme proper motion
Tangential Velocity
36.3 km/s
Space Velocity
37.4 km/s
thin disk
3Visibility
Set a location in User Settings to see visibility data.
Best season
Apr – Jun
(peak: May)
4Survey Image
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Explore
5
Size Comparison
6
Compare Stars
7
Spectral Classification
9
Stellar Lifecycle
10
Blackbody Spectrum
11
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
12
Stellar Fusion
Discover
13
Light Travel Time Machine
14
Relativistic Travel
15
Exoplanets
3 known planets
View in 3D
View this system in the 3D Orrery
Interactive Keplerian orbits, procedural planet textures, habitable zone.
| Planet | Radius | Mass | Period | Distance |
|---|---|---|---|---|
| GJ 581 e | 1.38R⊕ | 2.5M⊕ | 3.1d | 21ly |
| GJ 581 b | 4.79R⊕ | 20.5M⊕ | 5.4d | 21ly |
| GJ 581 c | 2.50R⊕ | 6.8M⊕ | 12.9d | 21ly |
Habitable Zone
Size & Mass Comparison
About exoplanets — how we find them and which host stars you can observe
Data from XHIP catalog via CDS VizieR, Strasbourg
