B-type star · blue-white star

HR 2858

HR 2858 is a blue-white star in the constellation Gemini 733 ly from Earth. Its surface is about 10,653 K, about 1.8 times the Sun's surface temperature, and it shines at 142× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 733 years ago.

733 lybrightness mag 6.23B9IV

Also catalogued as HD 59059 · HIP 36340

10,653 K
temperature
6.23
apparent magnitude
142× ☉
luminosity vs Sun
B9IV
spectral type
Distance & comparison with our Sun
733 years
at light speed from Earth
1.85×
as hot as the Sun
142×
the Sun's light output
-0.53
absolute magnitude
Explore from here · roam the neighborhood
HR 2858B-type
Sky regionGeminithis direction
StarHD 5960352 ly
StarHR 278058 ly
StarHR 296565 ly
StarPolluxstar
StarAlhenastar
Nearest stars
Bright stars in Gemini
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.2To see it 50 mm binocularsLook toward Gemini

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.