The Vault — Astronomy and Space _□✕

Astronomy and Space

Alcor (star)

Alcor (star)
Alcor (star)

Alcor () is a binary star system in the constellation of Ursa Major. It is the fainter companion of Mizar, the two stars forming a naked eye double in the handle of the Big Dipper (or Plough) asterism in Ursa Major. The two lie about 83 light-years away from the Sun, as measured by the Hipparcos astrometry satellite.

Also on this shelf

History of the Chinese space program.

Mars 5.

See also

Uncatalogued shelf

Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.

Depth 39
Shelf 40b7facbe4a076
25,934 catalogued holdings
3 ways on