vendredi 19 septembre 2008

Lepus 6

The hare
أرنبAlpha Leporis (α Lep / α Leporis) is the brightest star in the constellation Lepus. It also has the traditional name Arneb (hare in Arabic).
Alpha Leporis is an older, dying star that may have already passed through a supergiant phase and is now contracting and heating up in the latter phases of stellar evolution, or perhaps is still expanding into the supergiant phase. With a mass of likely less than 10 times that of the Sun, it will likely end its life as a hot white dwarf, although if it is at the heavier end of its estimated mass it may end in a spectacular stellar explosion known as a supernova.

The camels quenching their thirst

Beta Leporis (β Lep / β Leporis) is a star in the constellation Lepus and is also known as Nihal. Beta Leporis has apparent magnitude +2.81 and is 159.2 light years from Earth. It is a yellow supergiant of spectral class G5II with 150 times the luminosity of the Sun.
Coordinates (equinox J2000)
Right ascension: 5h28m14s
Declination: −20°45'32"

Epsilon Leporis (ε Lep / ε Lep) is a Class K5III, third-magnitude star in the constellation Lepus. It is occasionally called Sasin or Sasanka, meaning "Marked With the Hare", a name given to both the Moon and the constellation Lepus by the ancient Hindus.
This star is an orange giant, located about 225 light-years from Earth.

Mu Leporis (μ Lep / μ Lep) is a Class B9III, third-magnitude star in the constellation Lepus. It's nearly obscure proper name Neshmet is the original Egyptian name for the Boat of Osiris or Asar, which was imagined by the Egyptians among the stars of Lepus.
This star is a blue giant, located about 185 light-years from Earth.

Zeta Leporis (ζ Lep / ζ Leporis) white main sequence star approximately 70 light-years away in the constellation of Lepus. The star is suspected of being a spectroscopic binary star system, but this is yet to be confirmed. As of 2001, an asteroid belt was confirmed to orbit around the star.

Gamma Leporis (γ Lep / γ Leporis) is a multiple star system which is located at a distance of about 29 light-years from Earth and consists of 2 or 3 stars: Gamma Leporis A, Gamma Leporis B and possibly Gamma Leporis C.
Gamma Leporis lies in the south central part of the constellation Lepus, southeast of Beta Leporis and southwest of Delta Leporis. The system is a member of the Sirius group. Based upon its stellar characteristics and distance from Earth, Gamma Leporis is considered a high-priority target for NASA's Terrestrial Planet Finder mission.

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