Astronomy and Space

11 Orionis

11 Orionis is a solitary Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent visual magnitude of 4.65, and it is located approximately 365 light years away from the Sun based on parallax. The star is moving further from the Sun with a heliocentric radial velocity of +16.8 km/s. This object is a chemically peculiar star, known as an Ap star, with enhanced silicon and chromium lines in its spectrum. It is an α² CVn variable, ranging from 4.65 to 4.69 magnitude with a period of 4.64 days. The magnetic field measured from metal lines has a strength of +160±390 G.

Also on this shelf

See also

• ▸Adrastea (moon)
• ▸East India Company
• ▸Iapetus (moon)

Uncatalogued shelf

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