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Alpha Librae, called Zubenelgenubi, is a multiple star system divisible into two stars when seen through binoculars, The primary (Alpha 2 Librae) is a blue-white star of magnitude 2.7 and the secondary (Alpha 1 Librae) is a white star of magnitude 5.2 and spectral type F3V that is 74.9 ± 0.7 light-years from Earth. Its traditional name means ...
Gliese 436, a faint star in Leo about 33 light-years away from the Sun, is orbited by a transiting Neptune-mass extrasolar planet. [5] The carbon star CW Leo is the brightest star in the night sky at the infrared N-band (10 μm wavelength). The star SDSS J102915+172927 (Caffau's star) is a population II star in the galactic halo seen in Leo. It ...
The star was the first single main-sequence star other than the Sun to be known to emit X-rays, [23] and is surrounded by a circumstellar debris disk, similar to the Kuiper Belt. [24] Vega forms one corner of the famous Summer Triangle asterism; along with Altair and Deneb , these three stars form a prominent triangle during the northern ...
Below there are lists the nearest stars separated by spectral type. The scope of the list is still restricted to the main sequence spectral types: M , K , F , G , A , B and O . It may be later expanded to other types, such as S , D or C .
Explore daily insights on the USA TODAY crossword puzzle by Sally Hoelscher. Uncover expert takes and answers in our crossword blog. ... She was the first star of the New York City Ballet when it ...
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
Some of the brightest stars in the night sky, such as Rigel and Antares, are in the list. While supergiants are typically defined as stars with luminosity classes Ia, Iab or Ib, other definitions exist, such as those based on stellar evolution. [1] Therefore, stars with other luminosity classes can sometimes be considered supergiants.
It is one of the three stars of the Summer Triangle, along with Vega and Deneb. [6] [7] [8] It is an A-type main-sequence star with 1.8 times the mass of the Sun and 11 times its luminosity. [9] [10] The star rotates quickly, and this gives the star an oblate shape where it is flattened towards the poles. [9] [10] [11]