K-type star · orange

40 Cas

40 Cas is an orange in the constellation Cassiopeia 458 ly from Earth. Its surface is about 4,811 K, about 0.8 times the Sun's surface temperature, and it shines at 133× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 458 years ago.

458 lybrightness mag 5.28G8II-IIIvar

Also catalogued as HR 456 · HD 9774 · HIP 7650

4,811 K
temperature
5.28
apparent magnitude
133× ☉
luminosity vs Sun
G8II-IIIvar
spectral type
Distance & comparison with our Sun
458 years
at light speed from Earth
0.83×
as hot as the Sun
133×
the Sun's light output
-0.46
absolute magnitude
Explore from here · roam the neighborhood
40 CasK-type
Sky regionCassiopeiathis direction
StarHR 39824 ly
StarHR 62627 ly
StarHD 1292756 ly
StarCihstar
StarSchedarstar
Nearest stars
Bright stars in Cassiopeia
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.3To see it no equipment neededLook 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.