They are located at an enthusiastic angular length of 177 arc mere seconds 
off Regulus A beneficial. He is dimmer chief succession superstars that have an apparent magnitude off 8.fourteen and thirteen.5. Regulus B try good K2V superstar plus the partner is assumed to-be a purple dwarf of your own spectral form of M4V. The 2 superstars are split by the on the 100 astronomical units and enjoys an orbital age of 2,100 many years.
The key superstar off Regulus An effective are an early on superstar, not all billion yrs . old, and it has 3.five times new bulk of one’s Sun. The fresh new star try an especially punctual rotator, which have a great rotation period of merely fifteen.9 days. This means that, it offers an oblate shape. In the event it had been spinning sixteen% less, the latest centripetal push available with new star’s gravity would not be adequate to secure the star with her.
Alpha Leonis ‘s the closest brilliant celebrity into ecliptic. Ergo, it is regularly occulted from the Moon and you will, rarely, because of the Mercury and you may Venus.
On northern hemisphere, Regulus is the better noticed in the night on late wintertime and you can spring season. The only real season when the celebrity can’t be viewed is actually for thirty days on both sides from August twenty two, in the event it lays also around the Sun.
Brand new star’s label, Regulus, form “nothing queen” otherwise “prince” within the Latin. The newest star’s Greek title, Basiliscos, had the exact same definition. The fresh Arabic title to the superstar are Qalb al-Asad, which means “the heart of the lion.”
Denebola – ? Leonis (Beta Leonis)
Denebola ‘s the second brightest superstar when you look at the Leo and the 61st brightest superstar regarding heavens. It is a central sequence superstar to your excellent classification A3 V. It offers an apparent magnitude off dos.113 and is around thirty five.9 light-years distant out-of Earth. New star can easily be viewed in place of binoculars.
Denebola has 75% significantly more bulk compared to Sunlight, 173% of your solar distance, in fact it is 12 times a great deal more luminous. It’s categorized as a great Delta Scuti adjustable, meaning that its lighting may differ some during a period of several hours. Denebola shows differences in luminosity of 0.025 magnitudes regarding ten minutes twenty four hours.
Beta Leonis is a relatively more youthful superstar. Their projected many years is actually lower than eight hundred billion ages. Such as Regulus, Denebola try a rapid rotator, which results in an oblate shape of brand new celebrity, that have a bulge within equator. The latest star’s projected rotational acceleration try 128 km/s.
Denebola as well as shows a robust infrared continuously, which implies that it could have an excellent circumstellar particles disk from dust within its orbit.
The star belongs to the IC 2391 supercluster, an exceptional association whoever associate famous people share a common activity as a result of place, but are maybe not gravitationally bound. Most other celebs belonging to this association is actually Leader Pictoris during the brand new constellation Pictor, Beta Canis Minoris throughout the constellation Canis Lesser, together with celebrities in the great outdoors party IC 2391, also known as the newest Omicron Velorum Team, located in the constellation Vela.
Algieba – ? Leonis (Gamma Leonis)
Gamma Leonis is a dual star inside the Leo. Their old-fashioned name, Algieba or Al Gieba, arises from the fresh new Arabic Al-Jabhah, which means “brand new temple.” New star is frequently also known of the the Latin label, Juba.
Algieba comprises of a big celebrity towards spectral category K1-IIIbCN0.5 and an excellent dimmer mate star and this belongs to the spectral group G7IIICN-We. The new lighter large is 180 minutes significantly more luminous versus Sun and it has an apparent magnitude out of 2.twenty-eight. The brand new G7 category celebrity have a graphic magnitude out of step three.51, are 50 times lighter compared to the Sun, and has now 10 times new solar diameter. The two superstars provides an orbital ages of 500 years. An earth was found regarding the orbit of one’s pri.