About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 86. Chapters: 39 Bootis, 44 Bootis, 45 Bootis, 48 Cassiopeiae, 49 Camelopardalis, 54 Ceti, 59 Aurigae, 5 Aurigae, 64 Eridani, 71 Tauri, 94 Ceti, Alcyone (star), Alpha Caeli, Alpha Comae Berenices, Alpha Herculis, Alpha Hydri, Alpha Librae, Alpha Ursae Majoris, Beta Caeli, Beta Delphini, Beta Trianguli Australis, Beta Virginis, B Carinae, Chi Cancri, Chi Draconis, Chi Herculis, COROT-3, COROT-4, COROT-5, COROT-6, Cor Caroli, C Carinae, Delta2 Canis Minoris, Delta Cygni, Delta Equulei, Epsilon2 Arae, Epsilon Ceti, Epsilon Coronae Australis, Epsilon Lyrae, Eta Arietis, Eta Corvi, Eta Leporis, Eta Sagittarii, Eta Ursae Minoris, F-type main-sequence stars, Gamma Capricorni, Gamma Circini, Gamma Coronae Australis, Gamma Doradus, Gamma Leporis, Gamma Pavonis, Gamma Serpentis, Gamma Virginis, Gamma Volantis, HAT-P-7, HD 10647, HD 108147, HD 114762, HD 118889, HD 125040, HD 126128, HD 126141, HD 128093, HD 130603, HD 131473, HD 136118, HD 151613, HD 153950, HD 15524, HD 169830, HD 179949, HD 190984, HD 200156, HD 205739, HD 212301, HD 220466, HD 221287, HD 23079, HD 231701, HD 23319, HD 25171, HD 30562, HD 33564, HD 35984, HD 38283, HD 40979, HD 49933, HD 50554, HD 5388, HD 60532, HD 77370, HD 84117, HD 86081, HD 86264, HD 8673, HD 89744, HD 90089, HR 5825, Iota Cassiopeiae, Iota Piscium, Iota Trianguli, Kappa Bootis, KELT-2A, Lambda Arietis, Mu1 Cygni, Mu Ceti, Mu Draconis, Mu Telescopii, Nu1 Canis Majoris, Nu Andromedae, Nu Phoenicis, N Centauri, Omicron Aquilae, Omicron Cassiopeiae, Omicron Cephei, Phi2 Pavonis, Pi3 Orionis, Pi Arietis, Polaris, Procyon, Psi8 Aurigae, Psi Capricorni, Psi Tauri, Psi Velorum, Psi Virginis, P Velorum, Rho3 Arietis, Rho Geminorum, Rho Piscium, Rho Telescopii, Rho Tucanae, Sigma Bootis, Sigma Ceti, Sigma Serpentis, Tau1 Eridani, Tau5 Serpentis, Tau Bootis, Tau Hydrae, Tau Piscis Austrini, Tau Sculptoris, Theta Bootis, Theta Cygni, Theta Persei, Theta Sculptoris, Upsilon Andromedae, V538 Aurigae, WASP-1, WASP-14, WASP-15, WASP-17, WASP-7, W Ursae Majoris, Xi2 Capricorni, Xi2 Centauri, Xi Scorpii, XO-3, XO-4, YZ Cassiopeiae, Y Centauri, Y Sextantis, Zeta Aquarii, Zeta Cancri, Zeta Doradus, Zeta Serpentis, Zeta Trianguli Australis, Zeta Tucanae. Excerpt: Procyon ( CMi, Canis Minoris, Alpha Canis Minoris) is the brightest star in the constellation Canis Minor. To the naked eye, it appears to be a single star, the seventh brightest in the night sky with a visual apparent magnitude of 0.34. It is actually a binary star system, consisting of a white main-sequence star of spectral type F5 IV-V, named Procyon A, and a faint white dwarf companion of spectral type DA, named Procyon B. The reason for its brightness is not its intrinsic luminosity but its closeness to the Sun; as determined by the Hipparcos astrometry satellite, it lies at a distance of just 11.46 light-years (3.51 parsecs), and is therefore one of our nearest stellar neighbours. Its closest neighbour is Luyten's Star, about 1.12 ly (0.34 pc) away, and the latter would appear as a visual magnitude 7 star in the night sky of a hypothetical planet orbiting Procyon. Procyon forms one of the three vertices of the Winter Triangle, along with Sirius and Betelgeuse. Its color index is 0.42, and its hue has been described as having a faint yellow tinge to it. Procyon A has a stellar classification of F5IV-V. The effective surface temperature of the star is an estimated 6,530 K, giving it a white hue. It is 1.4 times the mass, twice the radius, and 6.9 times more luminous than the Sun. Procyon A is bright for its spectral class, suggesting that it is a subgiant that has nearly fused its core hydrogen into helium, after which it will expand as "burning" moves outside the core. As it continues to expand, the star will eventually swell to about 80 to 150 times its current diameter and become a red or...
