B-type star · blue-white star
7 Ser
7 Ser is a blue-white star in the constellation Serpens 449 ly from Earth. Its surface is about 10,226 K, about 1.8 times the Sun's surface temperature, and it shines at 50.21× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 449 years ago.
Also catalogued as HR 5717 · HD 136831 · HIP 75230
10,226 K
temperature
6.29
apparent magnitude
50.21× ☉
luminosity vs Sun
A0V
spectral type
Distance & comparison with our Sun
449 years
at light speed from Earth
1.77×
as hot as the Sun
50.21×
the Sun's light output
0.60
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.