K-type star · orange dwarf
Ross 154
Ross 154 is an orange dwarf in the constellation Sagittarius 9.7 ly from Earth. Its surface is about 3,779 K, about 0.7 times the Sun's surface temperature, and it shines at 0.0005× the Sun's brightness. At magnitude 10.4 it is within reach of 4-6" (100-150 mm) telescope; the light you see left it 10 years ago.
Also catalogued as HIP 92403 · Gliese Gl 729
3,779 K
temperature
10.37
apparent magnitude
0.0005× ☉
luminosity vs Sun
M3.5Ve
spectral type
Distance & comparison with our Sun
10 years
at light speed from Earth
0.65×
as hot as the Sun
0.0005×
the Sun's light output
13.01
absolute magnitude
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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.