HD 177809 is a 6th magnitude star in the constellation Lyra, approximately 700 light years away from Earth. It is a red giant star of the spectral type M2III, meaning it possesses a surface temperature of under 3,500 kelvins. In comparison to the Sun, it is much larger and brighter, but its surface is cooler.[1]

References

  1. ^ a b "Simbad Query Result". Simbad. Retrieved October 17, 2007.


Allikas: https://en.wikipedia.org/wiki/HD_177809
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