Astronomy and Space

Epsilon Crucis

Epsilon Crucis is a single, orange-hued star in the southern constellation of Crux. It has the proper name Ginan, pronounced ; Epsilon Crucis is its Bayer designation. Measurements made by the Gaia spacecraft showed an annual parallax shift of 14.20 mas, which provides a distance estimate of about 230 light-years (70.4 pc). The star can be seen with the naked eye, having an apparent visual magnitude of 3.58. It is moving closer to the Sun with a radial velocity of −4.60 km/s. This is a giant star of type K with a stellar classification of K3III, indicating that it has exhausted the hydrogen at its core and evolved away from the main sequence. It is about two billion years old with 1.4–1.5 times the mass of the Sun and has expanded to 31 times the Sun's radius. The star is shining with around 282 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,210 K.

Also on this shelf

See also

• ▸Beta Arae
• ▸Female Figure (Giambologna)
• ▸Kepler-1638

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