M-type star · red

Eta Sgr

Eta Sgr is a red in the constellation Sagittarius 146 ly from Earth. Its surface is about 3,674 K, about 0.6 times the Sun's surface temperature, and it shines at 100× the Sun's brightness. At magnitude 3.1 it is bright enough to see with the naked eye; the light you see left it 146 years ago.

146 lybrightness mag 3.10M2III

Also catalogued as HR 6832 · HD 167618 · HIP 89642

3,674 K
temperature
3.10
apparent magnitude
100× ☉
luminosity vs Sun
M2III
spectral type
Distance & comparison with our Sun
146 years
at light speed from Earth
0.64×
as hot as the Sun
100×
the Sun's light output
-0.15
absolute magnitude
Explore from here · roam the neighborhood
Eta SgrM-type
Sky regionSagittariusthis direction
StarKaus Australis7.4 ly
StarKappa² CrA13 ly
StarHR 674920 ly
StarNunkistar
StarAscellastar
Nearest stars
Bright stars in Sagittarius
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 3.1To see it no equipment neededLook toward Sagittarius

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.