description 22 Kalliope Overview
22 Kalliope is a large M-type asteroid situated in the main asteroid belt, discovered by English astronomer John Russell Hind in 1852. Named after the Greek muse of epic poetry, it features a diameter of roughly 160 kilometers, making it one of the more massive bodies in the belt. In 2001, astronomers confirmed that Kalliope possesses a natural satellite, named Linus, which is itself a sizable asteroid with a diameter of about 35 kilometers. This binary system continues to be studied for insights into asteroid composition.
help 22 Kalliope FAQ
Why is asteroid 22 Kalliope classified as an M-type asteroid?
Its M-type classification comes from its relatively featureless, reddish spectrum and historically suggested a metal-rich composition. Observations indicate that Kalliope is more compositionally complex than a simple solid-metal body.
How was Kalliope's moon Linus discovered?
Linus was discovered in 2001 through high-resolution observations that revealed a companion orbiting Kalliope. Tracking that orbit has helped astronomers estimate the mass and density of the Kalliope system.
Who named 22 Kalliope, and what does the name mean?
English astronomer John Russell Hind discovered the asteroid in 1852. It was named for Calliope, the Greek Muse associated with epic poetry and traditionally depicted with a writing tablet or scroll.
Could 22 Kalliope and Linus be observed with an amateur telescope?
Kalliope itself can become accessible to well-equipped amateur observers when favorably placed, although it appears only as a point of light. Linus is far too close and faint to separate with an ordinary backyard telescope.
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