M-type star · red

HR 256

HR 256 is a red in the constellation Cassiopeia 677 ly from Earth. Its surface is about 3,540 K, about 0.6 times the Sun's surface temperature, and it shines at 115× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 677 years ago.

677 lybrightness mag 6.28M2.5IIIa

Also catalogued as HD 5273 · HIP 4298

3,540 K
temperature
6.28
apparent magnitude
115× ☉
luminosity vs Sun
M2.5IIIa
spectral type
Distance & comparison with our Sun
677 years
at light speed from Earth
0.61×
as hot as the Sun
115×
the Sun's light output
-0.30
absolute magnitude
Explore from here · roam the neighborhood
HR 256M-type
Sky regionCassiopeiathis direction
StarOmicron Cas34 ly
StarPhi And53 ly
StarHR 18957 ly
StarCihstar
StarSchedarstar
Nearest stars
Bright stars in Cassiopeia
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.3To see it 50 mm binocularsLook toward Cassiopeia

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.