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Libertas

Xi Aquilae, 59 Aquilae

Yellow giant in Aquila

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Proper Name	Libertas
Bayer Designation	Xi Aquilae
Flamsteed Number	59 Aquilae
HR (BSC)	7595
HD	188310
Constellation	Aquila
Right Ascension	19h 54m 15s
Declination	+8° 27' 41"
Distance	186 light years 57 parsecs
Magnitude	Apparent: +4.71 Absolute: +0.96
Spectral Class	G9.5IIIb yellow giant
Planets in this system	Fortitudo (Libertas b), gas giant
Optimum Visibility	August
Notes	Falling near the bright star Altair in the sky, Libertas (or Xi Aquilae) is an evolved star that has undergone expansion into its red giant phase. It has a single known planet, named Fortitudo, which is an immense gas giant estimated to be nearly three times as massive as Jupiter, but in a much closer orbit around its star.

The brilliant foreground star to the northwest in this image is Altair or Alpha Aquilae, actually a rather less luminous star than giant Libertas, but less than a tenth of its distance from the Solar System. Imagery provided by Aladin sky atlas

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