emamajek on 17-Feb-2016 04:29:00 GMT about
alf Cap has the classic name "Giedi" or "Algedi", and the binary components are named in the Bright Star Catalogue and elsewhere as "Prima Giedi" (alf01 Cap = HR 7747) and "Secunda Giedi" (alf02 Cap = HR 7754). References:
(1) Joseph Piazzi (1814) "Praecipuarum Stellarum Inerrantium Positiones Mediae Ineunte Saeculo XIX. Ex Observationibus Habitis In Specula Panormitana Ab anno 1792 ad annum 1813" ["Prima Giedi" for alf01 Cap, "Secunda Giedi" (written as "Secun. Giedi") for alf02 Cap]
(2) Elijah Hinsdale Burritt (1840) "The Geography of the Heavens, and Class Book of Astronomy; Accompanied by a Celestial Atlas" (5th Edition, with an introduction by Thomas Dick. New York, F.J. Huntington and Co.) ["Giedi" for alf Cap]
(3) Richard A. Proctor (1866) "The Handbook of the Stars" (Longmans, Green, and Co. London) ["Secunda Giedi" for alf02 Cap, no mention of alf01 Cap]
(4) Richard Hinckley Allen (1899) "Star-names and their meanings" (G.E. Stechert, New York) ["Prima Giedi" for alf01 Cap, "Secunda Giedi" for alf02 Cap, "Algedi" presumably for the pair, several other cultural aliases].
(5) Arthur P. Norton (1910) "A Star Atlas and Telescopic Handbook (Epoch 1920) for Students and Amateurs" (Gall and Inglis; London & Edinburgh) ["Giedi" for alf Cap, "Prima Giedi" for alf01 Cap, "Secunda Giedi" for alf02 Cap]
(6) William Tyler Olcott (1911) "Star Lore of All Ages" (G.P. Putnum's Sons, NY and London; republished as "Star Lore: Myths, Legends, and Facts", Dover Publications, Inc., Mineola, NY, USA 2004) ["Prima Giedi" for alf01 Cap, "Secunda Giedi" for alf02 Cap]
(7) George R. Davis, Jr. (1944) "The pronunciations, derivations, and meanings of a selected list of star names" Popular Astronomy, vol. 52, p.8 ["Algedi" for alf Cap]
(8) Antonin Becvar (1964) "Atlas of the Heavens - II: Catalogue 1950.0", Praha: Publication House of the Czechoslovak Academy of Sciences and Cambridge, Mass.: Sky Publishing Corporation, 1964, 4th enl. edition, edited by Mohr, Josef M. (scient. ed.) ["Gredi" for alf Cap]
(9) Arthur P. Norton, B.A., and J. Gall Inglis, F.R.A.S. (1964) Norton's Star Atlas and Telescopic Handbook, 15th Edition, Sky Publishing Corporation, Cambridge MA, USA ["Giedi Prima" for alf01 Cap; "Giedi Secunda" for alf02 Cap]
(10) Jack W. Rhoads (1971) "Technical Memorandum 33-507: A Reduced Star Catalog Containing 537 Named Stars", Jet Propulsion Laboratory California Institute of Technology, Pasadena, CA, USA ["Prima Giedi" for alf01 Cap, "Secunda Giedi" for alf02 Cap]
(11) Robert Burnham, Jr. (1978) "Burnham's Celestial Handbook: An Observer's Guide to the Universe Beyond the Solar System" (Dover Publications) ["Al Giedi" for alf Cap]
(12) Mark R. Chartrand III (1982) "Skyguide: A Field Guide for Amateur Astronomers" (Golden Press, New York) ["Giedi" for alf Cap]
(13) Helmet Werner & Felix Schmeidler (1986) "Synopsis der Nomenklatur der Fixsterne = Synopsis of the Nomenclature of the Fixed Stars" Wissenschaftliche Verlagsgesellschaft mbH Stuffgart ["Giedi" or "Dabih" for alf Cap].
(14) Ian Ridpath (1988) "Star Tales" (Universe Books, New York) ["Algedi" or "Giedi"]
(15) D. Hoffleit & W.H. Warren, Jr. (1991) "The Bright Star Catalog, 5th Revised Edition (Preliminary Version)" [alf01 Cap = HR 7747 = "Prima Giedi; Algiedi Prima; Algedi with HR 7754", alf02 Cap = HR 7754 = "Secunda Giedi; Algiedi Secunda; Gredi; Algedi, with HR 7747"].
(16) Paul Kunitzsch & Tim Smart (2006) "A Short Guide to 254 Star Names and Their Derivations" (2nd Revised Edition, Sky Publishing, Cambridge MA, USA) ["Algedi" or "Giedi" for alf Cap]
(17) Ian Ridpath & Wil Tirion (2008) "Stars and Planets: The Most Complete Guide to the Stars, Planets, Galaxies, and the Solar System Fully Revised and Expanded edition" (Princeton University Press, Princeton) ["Algedi" or "Giedi"]
To avoid confusion with "Deneb Algedi" (del Cap), "Giedi" should probably be adopted for the pair, consistent with the names for the components in most common use, hence:
alf Cap = Giedi
alf01 Cap = HR 7747 = Prima Giedi
alf02 Cap = HR 7754 = Secunda Giedi
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