K-type star · orange
Phi Ser
Phi Ser is an orange in the constellation Serpens 241 ly from Earth. Its surface is about 4,428 K, about 0.8 times the Sun's surface temperature, and it shines at 28.97× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 241 years ago.
Also catalogued as HR 5940 · HD 142980 · HIP 78132
4,428 K
temperature
5.54
apparent magnitude
28.97× ☉
luminosity vs Sun
K1IV
spectral type
Distance & comparison with our Sun
241 years
at light speed from Earth
0.77×
as hot as the Sun
28.97×
the Sun's light output
1.20
absolute magnitude
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VISIBLE TO THE NAKED EYE
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.