Gamma Arietis (γ Ari / γ Arietis) is a star in constellationAries. It also has the traditional name Mesarthim. The Pleiades star cluster A star is any massive gaseous body in outer space. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Aries (, Latin for Ram) is one of the constellations of the zodiac. ...
It is a double star, with components separated with an angular distance of 7.7 arcseconds (separable in small telescopes). Both components have same spectral type A0 V (white main sequence stars) and both have apparent magnitude +4.75. Mesarthim is 147 light years distant. Coordinates for the star: right ascension 1h53m31.80s, declination +19°17'37.0" (Epoch 2000.0). A binary star system consists of two stars both orbiting around their barycenter. ... This article is about angles in geometry. ... A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. ... 50 cm refracting telescope at Nice Observatory. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ... Hertzsprung-Russell diagram The main sequence of the Hertzsprung-Russell diagram is the curve where the majority of stars are located in this diagram. ... 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. ... Right ascension (RA; symbol α: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... The word epoch can mean either an interval of time, or a particular point in time used as a reference point. ...
GammaArietis, Gamma Virginis) sind beide Komponenten nahezu gleich hell, so dass eine Entscheidung welche Komponente der Hauptstern und welche der Begleiter ist, schwer zu treffen ist.
Doppelsterne nennt man diejenigen Sterne, welche sich mit bloßem Augen einzeln, durch minder oder mehr vergrößernde, oft nur durch sehr vollkommene Fernröhre aber, entweder aus zwei gleich großen, oder ungleich großen Sternen, die nur einige Sekunden auseinander zu stehen scheinen, zusammen gesetzt sich darstellen.
Wie bereits bei Alpha Arietis gibt er den Begleiter mit einer Helligkeit von 9 mag an.
The ram's head consists of the stars alpha Arietis, lambda Arietis, and beta Arietis: alpha Arietis being of the second magnitude and beta Arietis of the third magnitude.
The ram's body consists of the stars alpha Arietis, eta Arietis, epsilon Arietis, 41 Arietis, and 35 Arietis: epsilon Arietis and 41 Arietis being of the fourth magnitude.
The stargammaArietis, of fourth magnitude, represents the ram's front foot, and the star delta Arietis, also of fourth magnitude, represents the ram's hind foot.
Feeds |
Contact