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Kepler-452b System
Kepler-45, formerly known as KOI-254, is a star in the northern constellation of Cygnus (constellation), Cygnus. It is located at the celestial coordinates: right ascension , declination . With an apparent visual magnitude of 16.88, this star is too faint to be seen with the naked eye. The star is exhibiting strong starspot activity, with 4.1% of its surface covered by starspots. Planetary system The "Hot Jupiter" class planet Kepler-45b, discovered in February 2011, is unusually massive for the M-class parent star. Its orbit is aligned within 11 degrees of rotational axis of the star. The planet is strongly suspected to have optically thick rings, because planetary shadow appears to be elongated. See also *NGTS-1b References {{Stars of Cygnus Cygnus (constellation) M-type main-sequence stars Kepler objects of interest, 254 Planetary transit variables Planetary systems with one confirmed planet 2MASS objects, J19312949+4103513 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cygnus (constellation)
Cygnus is a northern constellation on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. Cygnus is one of the most recognizable constellations of the northern summer and autumn, and it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations. Cygnus contains Deneb (ذنب, translit. ''ḏanab,'' tail)one of the brightest stars in the night sky and the most distant first-magnitude staras its "tail star" and one corner of the Summer Triangle. It also has some notable X-ray sources and the giant stellar association of Cygnus OB2. Cygnus is also known as the Northern Cross. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
