Alpha Cancri (α Cnc / α Cancri) is a star in the constellationCancer. It also has the traditional name Acubens, derived from an Arabic word that means "the claw", as in the claw of Cancer (e.g. the Crab). The Pleiades star cluster A star is a massive body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... In astronomy and astrology, Cancer ( ), Latin for crab, is one of the twelve constellations of the zodiac. ...
Alpha Cancri belongs to the spectral class A3 and has an apparent magnitude of +4.3. Its distance is 180 light years from the Sun. Since it is near the ecliptic, it can be occulted by the Moon and very rarely by planets. In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... The Sun (or Sol) is the star at the center of our Solar system. ... The plane of the ecliptic is well seen in this picture from the 1994 lunar prospecting Clementine spacecraft. ... In this July, 1997 still frame captured from video, the bright star Aldebaran has just reappeared on the dark limb of the waning crescent moon in this predawn occultation. ... Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ... A planet is generally considered to be a relatively large mass of accreted matter in orbit around a star that is not a star itself. ...
Jupiter was at Alchiba (Alpha Corvi) at the harsh Nor'easter "Storm of the Century" December 11, 1992, and at the Aries ingress of 1993, presaging the great Mississippi flood as well as storms and floods in China, Bangladesh, India and Indonesia.
The "lucida" or determinant star of the constellation is Al Rischa, alpha Piscium (29 Aries) the star in the knot of the cord and the easternmost in the constellation.
An adaptation extended the original, solitary "Horn-Star" (Hamal, alpha Arietis) into Kakkab Lulim, the constellation of the Ram, which, like the Bull, was a lusty, virile, and aggressive creature, suit-able for leadership, regally haloed with horns that impelled the opening of the year.
[ The 5.5-magnitude 51 Pegasi is easily visible in binoculars between Alpha and Beta Pegasi, the western pair of stars in the Great Square of Pegasus.
This planet too probably has a region in its atmosphere where the temperature would allow liquid water.
Marcy and Butler have discovered yet another planet this time around the star HR3522 (aka Rho 1 Cancri, 55 Cancri) about 45 light years from the Earth.
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