G-type star · yellow dwarf, like our Sun
Groombridge 1830
Groombridge 1830 is a yellow dwarf much like our Sun in the constellation Ursa Major 29.7 ly from Earth. Its surface is about 5,423 K, about 0.9 times the Sun's surface temperature, and it shines at 0.19× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 30 years ago.
Also catalogued as HR 4550 · HD 103095 · HIP 57939 · Gliese Gl 451A
5,423 K
temperature
6.42
apparent magnitude
0.19× ☉
luminosity vs Sun
G8Vp
spectral type
Distance & comparison with our Sun
30 years
at light speed from Earth
0.94×
as hot as the Sun
0.19×
the Sun's light output
6.63
absolute magnitude
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BINOCULARS NEEDED
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.