M-type star · red

HR 5644

HR 5644 is a red in the constellation Triangulum Australe 1,173 ly from Earth. Its surface is about 2,244 K, about 0.4 times the Sun's surface temperature, and it shines at 565× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 1,173 years ago.

1,173 lybrightness mag 5.75N0v

Also catalogued as HD 134453 · HIP 74582

2,244 K
temperature
5.75
apparent magnitude
565× ☉
luminosity vs Sun
N0v
spectral type
Distance & comparison with our Sun
1,173 years
at light speed from Earth
0.39×
as hot as the Sun
565×
the Sun's light output
-2.03
absolute magnitude
Explore from here · roam the neighborhood
HR 5644M-type
Sky regionTriangulum Australethis direction
StarKappa TrA88 ly
StarKappa¹ Aps100 ly
StarHD 137366120 ly
StarAtriastar
StarBeta TrAstar
Nearest stars
Bright stars in Triangulum Australe
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.8To see it no equipment neededLook toward Triangulum Australe

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.