Search results
Results From The WOW.Com Content Network
Libra's status as the location of the equinox earned the equinox the name "First Point of Libra", though this location ceased to coincide with the constellation in 730 BC because of the precession of the equinoxes. In ancient Egypt the three brightest stars of Libra (α, β, and σ Librae) formed a constellation that was viewed as a boat. [7]
α Librae (Latinised to Alpha Librae) is the system's Bayer designation.. Zubenelgenubi / ˌ z uː b ən ɛ l dʒ ə ˈ n uː b i /, also rendered Zuben Elgenubi, derives from the Arabic ّالزُبَانَى الجَنُوبِي al-zubānā al-janūbiyy "the southern claw", which was coined before Libra was recognized as a constellation distinct from Scorpius.
A light curve for Iota 1 Librae plotted from STEREO data, adpated from Wraight et al. (2012) [7]. Iota 1 Librae is a four star system. [3] The inner pair, designated components Aa and Ab, form a spectroscopic binary with an orbital period of 22.35 years and an eccentricity of 0.35. [5]
θ Librae, Latinised as Theta Librae, is a single [9] star in the southern zodiac constellation of Libra, near the constellation border with Scorpius.It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.14. [2]
σ Librae (Latinised to Sigma Librae) is the system's current Bayer designation (the star originally bore the designation Gamma Scorpii [16] and did not receive its current designation until the new designation was agreed upon by Commission 3 of the International Astronomical Union (IAU) on July 31, 1930. [17])
AP Librae is a BL Lacertae object [6] located at a distance of 700 million light years [5] in the southern constellation of Libra. In the visual band it is one of the most active blazars known. [10] AP Lib is surrounded by an extended source with a spectrum characteristic of a red-shifted giant elliptical galaxy.
Epsilon Librae (ε Lib) is the Bayer designation for a binary star system in the zodiac constellation Libra. With an apparent visual magnitude of 4.922, [2] it is bright enough to be seen with the naked eye. Based upon an annual parallax shift of 32.02 mas, [1] it is located about 102 light years away from the Sun.
Gliese 581 (/ ˈ ɡ l iː z ə /) is a red dwarf star of spectral type M3V which hosts a planetary system, 20.5 light-years (6.3 parsecs) away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 101st closest known star system to the Sun. [15] Gliese 581 is one of the oldest, least active ...