Alpha Leonis A
Regulus is a blue-white main sequence star of spectral and luminosity type B7 Va,ne (Mahipal Singh, 1982). The star may have a mass 3.4 times greater than Sol's, 3.14 times its diameter between the poles and 4.
Alpha Leonis, 32 Leo, Cor Leonis, Basilicus, Lion's Heart, Rex, Kalb al Asad, Kabeleced, GJ 9316, HR 3982, BD +12° 2149/2147, HD 87901/87884, GCTP 2384.00, LTT 12716/12714, SAO 98967/98966, FK5 380, HIP 49669, TD1 14585.
Alpha Leonis system and Regulan system
Wolf 359 (CN Leonis)
Leo Minor (Leonis Minoris) Lepus (Leporis)
Arneb (Alpha Leporis)
Libra (Librae) Lupus (Lupi) Lynx (Lyncis) Lyra (Lyrae) ...
Regulus = Alpha Leonis
Denebola = Beta Leonis
Algieba = Gamma Leonis
Zosma = Delta Leonis
Algenubi = Epsilon Leonis
Adhafera = Zeta Leonis
Eta Leo = Eta Leonis
Chertan = Theta Leonis
Rasalas = Mu Leonis
Subra = Omicron Leonis & ...
The stars eta Leonis and alpha Leonis form the left front foot, with alpha Leonis, also known as Regulus, being the bright foot of magnitude one. The stars eta Leonis and omicron Leonis form the right front foot of the Lion.
Reference
* H. A.
The brightest star in Leo is [4806] alpha Leonis, also known as Regulus ("prince" or "little king"), Basiliscus ("little king"), Cor Leonis ("the heart of the lion"), Qalb, Kabelaced, Qalb al-Asad ("the heart of the lion"), and Rex ("king").
Marking the lion's heart (where Ptolemy located it) is the constellation's brightest star, Alpha Leonis, called Regulus, Latin for ‘little king'; its Greek name, Basiliscos, had the same meaning.
Alpha Leonis is named "Regulus" because it was seen as the Heaven's Guardian, one who regulated all things in the heavens. While the name Regulus was given us by Copernicus, the star was better known in antiquity as Cor Leonis, the Lion's Heart.
(rg´yls), brightest star in the constellation Leo; Bayer designation Alpha Leonis; 1992 position R.A. 10h08m, Dec. +12°00&minut;. A bluish-white main-sequence star of spectral class B7 V, its apparent magnitude of 1.
You can find Leo in the sky by looking for the "sickle" starting at Regulus (Alpha Leonis) and following the backwards question mark. To find Regulus, use the Big Dipper as described on the Ursa Major Page.
Cor Leonis; Rex; Al Kalb al Asad; Kabeleced.
Alpha Leonis
HR 3982
HD 87901 ...
Regulus Alpha Leonis
Rigel Beta Orionis
Rigil Kentaurus Alpha Centauri
Rijl al Awwa Mu Virginis
Rotanev Beta Delphini
Ruchba Omega-2 Cygni
Ruchbah Delta Cassiopeiae
Rukbat Alpha Sagittarii
Rukh Delta Cygni ...
 See also: Regulus, Star, Sky, Constellation, Sun
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