Astronomy and Space

Alpha Caeli

Alpha Caeli is a binary star system in the southern constellation Caelum. Its name is a Bayer designation that is Latinized from α Caeli, and abbreviated Alpha Cae or α Cae. With a combined apparent visual magnitude of 4.45, it is only visible to the naked eye in places far from light pollution, but still is the brightest star in the constellation. Parallax measurements by the Gaia spacecraft indicate a distance of 66.48 light-years (20.38 pc) to Alpha Caeli. It has a relatively low radial velocity, estimated at 0.7 km/s relative to the Sun. This system consists of an F-type star of magnitude 4.46 and a small red dwarf of magnitude 12.5. As of 2008, they are separated by 6.6" in the sky. A debris disk has been detected around the primary component of the system.

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See also

• ▸Amset (crater)
• ▸Gift wrapping
• ▸IXPE

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