ursa minor
Học thuậtThân thiện
Definition
Proper noun: * Ursa Minor: A small constellation in the northern celestial hemisphere. It is most notable for containing Polaris, the current North Star, which lies very close to the north celestial pole. The constellation's shape is often likened to a small bear with a long tail, and its seven brightest stars form an asterism commonly known as the Little Dipper.
Usage
- Ursa Minor is used as the proper name for this specific constellation. It is always capitalized.
- To find Polaris, first locate the Big Dipper and then follow an imaginary line to Ursa Minor.
- Unlike its larger counterpart, Ursa Minor is a relatively faint constellation except for Polaris.
Advanced Usage
- "The Lesser Bear": This is a direct translation of the Latin name , which is sometimes used in literary or descriptive contexts.
- In classical mythology, the constellations Ursa Major and Ursa Minor represent a mother bear and her cub.
Variants and Related Words
- Little Dipper (n): This is the common name for the prominent seven-star asterism within the Ursa Minor constellation. The handle of the Little Dipper forms the bear's tail, and Polaris is the star at the end of the handle.
- The two outer stars of the Little Dipper's bowl are known as the "Guardians of the Pole."
- Polaris (n): The common name for Alpha Ursae Minoris, the brightest star in Ursa Minor, currently serving as the North Star.
- Navigators have used Polaris for centuries because it marks the direction of true north.
Synonyms
- The Little Bear: A direct English translation and synonym for Ursa Minor.
- The Smaller Bear: A descriptive synonym.
Related Terms
- Ursa Major (n): The "Great Bear," a larger and brighter northern constellation containing the asterism known as the Big Dipper. It is mythologically and celestially linked to Ursa Minor.
- A line drawn through the two pointer stars of Ursa Major leads directly to Polaris in Ursa Minor.
- Circumpolar constellation (n): A constellation that, from a given latitude, never sets below the horizon and appears to circle the celestial pole. Ursa Minor is a circumpolar constellation for observers in the Northern Hemisphere.
- Because it is a circumpolar constellation, Ursa Minor is visible every night of the year from mid-northern latitudes.
Noun
- a constellation outside the zodiac that rotates around the North Star