castor


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Idioms, Wikipedia.

Castor

(kăs`tər), bright star in the constellation GeminiGemini
[Lat.,=the twins], northern constellation lying on the ecliptic (the sun's apparent path through the heavens) between Taurus and Cancer, N of Canis Minor; it is one of the constellations of the zodiac. Gemini is traditionally depicted as two men.
..... Click the link for more information.
; Bayer designation α Geminorum; 1992 position R.A. 7h34.1m, Dec. +31°54'. Slightly dimmer than PolluxPollux,
brightest star in the constellation Gemini; Bayer designation Beta Geminorum; 1992 position R.A. 7h44.8m, Dec. +28°03'. An orange giant of spectral class K0 III, it is the nearest giant star, lying at a distance of 35 light-years.
..... Click the link for more information.
, with which it forms the Twins, Castor has an apparent magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
..... Click the link for more information.
 of 1.58, which still makes it one of the 25 brightest stars in the sky. Castor is actually a six-star system, being a visual triple each component of which is a binary starbinary star
or binary system,
pair of stars that are held together by their mutual gravitational attraction and revolve about their common center of mass. In 1650 Riccioli made the first binary system discovery, that of the middle star in the Big Dipper's handle, Zeta
..... Click the link for more information.
; the three components are an eclipsing binary and a pair of spectroscopic binaries. The two brightest components are white, main-sequence stars of spectral classesspectral class,
in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically.
..... Click the link for more information.
 A1 and A5. The system is about 50 light-years distant.

castor:

see beaverbeaver,
either of two large aquatic rodents, Castor fiber and Castor canadensis, known for their engineering feats. They were once widespread in N and central Eurasia except E Siberia, and in North America from the arctic tree line to the S United States.
..... Click the link for more information.
.

Castor

(kass -ter, kahss -) (α Gem) A white star that is the second-brightest in the constellation Gemini. It is a visual triple star, the two brighter components having an orbital period of about 470 years; the third component, a flare star, is located some distance away. All three are spectroscopic binaries. mv : 1.9 (A), 2.9 (B), 1.57 (AB); Mv : 0.5 (AB); spectral type: A1 V (A), A2 V (B); distance: 15 pc.

Castor

[′kas·tər]
(astronomy)
A multiple star of spectral classification A0 in the constellation Gemini; the star α Geminorum.

castor

1. the brownish aromatic secretion of the anal glands of a beaver, used in perfumery and medicine
2. the fur of the beaver
3. a less common name for beaver
References in periodicals archive ?
For Castor, one trick was to carry a newspaper around and listen to the radio so he could discuss current events.
Castor Networks provides reliable mission and business critical communication services including iDirect, SCPC and Teleport services from its Teleport facilities in Burum, The Netherlands.
Repeating her claim that the best defense is a good offense, Castor urged students to remove from their vehicles any gender-specific items visible to passers-by.
Conventional breeding to rid castor of lethal ricin and troublesome allergens hasn't solved the problem.
Mr Gordon Brown, chairman of Kenrick and head of the Spire Group, said: "We are extremely pleased with the acquisition and believe that the added range of castors and additional customers will considerably strengthen the company's position in the market place.
Nederlandse Vereniging van Makelaars, the largest association of real estate agents and experts in the Netherlands in collaboration with Mirabeau, a Caringo technology partner, are using CAStor as the foundation of an online repository of real estate images and transactions from 1985 to present.
interchanges: half-diamond interchange at Allegheny Avenue for Southbound I-95 and a partial clover interchange at Castor Avenue for
The ATK motor was a CASTOR 30B, which was upgraded from the CASTOR 30 that boosted two prior Antares missions to the ISS.
This plant's botanical name is Ricinus communis, and ricin, the lethal chemical, is made from castor bean mash.
If I understand your idea, when you fit your castors to the bottom of the piece of furniture it makes it easier to slide over carpets, rather than popping out of the castors when being moved.
The strap-on rockets, called Castor 4A's, are produced by Morton Thiokol, the same company that makes the shuttle's big solid boosters.
today announced the availability of CAStor[R] for OpenStack, software that enhances the OpenStack Swift object servers by integrating CAStor - Caringo's enterprise-ready object storage engine.