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Rho Aquilae, ρ Aquilae, is the Bayer designation for a star in the northern constellation of Delphinus. It has an apparent visual magnitude of 4.94 [ 2 ] and is bright enough to be seen with the naked eye in good conditions.
R Aquilae is an aging red giant on the asymptotic giant branch [3] with a stellar classification that varies over time, between M5e and M9e, [2] where the 'e' suffix indicates emission features in the spectrum. The cooler spectral types occur near the minimum visual magnitude, and the hottest near maximum. [11]
Rho Aquilae at magnitude 4.94 [26] is at about 150 light-years away. [26] Due to its proper motion it has been in the (round-figure parameter) bounds of the constellation since 1992. [ 27 ] It is an A-type main sequence star with a lower metallicity than the Sun. [ 28 ]
Among the remaining stars, the nearer ones exhibit proper motion, so it is only a matter of time before some of them cross a constellation boundary and switch constellations as a consequence. In 1992, Rho Aquilae became the first star to have its Bayer designation "invalidated" by moving to a neighbouring constellation—it is now a star of the ...
Pages in category "Aquila (constellation)" The following 185 pages are in this category, out of 185 total. ... R Aquilae; Rho Aquilae; S. Serpens–Aquila Rift; SGR ...
He added pi and rho, not using xi and omicron as Bayer used these letters to denote Cygnus and Hercules on his map. [14] The brightest star in the constellation is Vega (Alpha Lyrae), a main-sequence star of spectral type A0Va. [15] Only 7.7 parsecs distant, [16] Vega is a Delta Scuti variable, varying between magnitudes −0.02 and 0.07 over 0 ...
Aquila is a constellation on the celestial equator. Its name is Latin for 'eagle' and it represents the bird that carried Zeus/Jupiter's thunderbolts in Greek-Roman mythology. Its brightest star, Altair, is one vertex of the Summer Triangle asterism. The constellation is best seen in the northern summer, as it is located along the Milky Way.
The number used to identify stars in navigation publications and star charts. [Note 2] Common name The name of the star commonly used navigation publications and star charts. Bayer designation: Another name of the star which combines a Greek letter with the possessive form of its constellation's Latin name. Etymology of common name