M-type star · red

HR 5821

HR 5821 is a red in the constellation Lupus 872 ly from Earth. Its surface is about 3,620 K, about 0.6 times the Sun's surface temperature, and it shines at 204× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 872 years ago.

872 lybrightness mag 6.21K5/M0III

Also catalogued as HD 139599 · HIP 76809

3,620 K
temperature
6.21
apparent magnitude
204× ☉
luminosity vs Sun
K5/M0III
spectral type
Distance & comparison with our Sun
872 years
at light speed from Earth
0.63×
as hot as the Sun
204×
the Sun's light output
-0.93
absolute magnitude
Explore from here · roam the neighborhood
HR 5821M-type
Sky regionLupusthis direction
StarHD 133399100 ly
StarDelta Lup120 ly
StarLambda Lup130 ly
StarUridimstar
StarBeta Lupstar
Nearest stars
Bright stars in Lupus
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.2To see it 50 mm binocularsLook toward Lupus

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.