He could be found at a keen angular distance off 177 arch moments from Regulus An excellent. He is dimmer chief sequence famous people which have an apparent magnitude regarding 8.fourteen and thirteen.5. Regulus B is actually a K2V star while the lover is thought to-be a purple dwarf of one’s spectral type of M4V. Both famous people try separated from the on the one hundred substantial products and you may has actually an enthusiastic orbital ages of 2,100 age.
The primary superstar regarding Regulus Good is actually an early superstar, only a few million yrs old, possesses step 3.five times brand new size of one’s Sun. The brand new celebrity is actually a really fast rotator, that have a great rotation ages of only fifteen.9 times. This is why, this has a keen oblate shape. In the event it was in fact spinning sixteen% quicker, the centripetal force available with the newest star’s the law of gravity wouldn’t be sufficient to keep the superstar together with her.
Alpha Leonis is the nearest vibrant celebrity to the ecliptic. Thus, it is frequently occulted from the Moonlight and you may, scarcely, because of the Mercury and you can Venus.
Regarding the northern hemisphere, Regulus is the greatest seen in the night time on the late winter months and you may spring. The actual only real time of year in the event the star can not be seen is actually for thirty days to the either side away from August twenty-two, in the event it lies too close to the Sun.
Brand new star’s term, Regulus, form “absolutely nothing queen” otherwise “prince” in the Latin. The brand new star’s Greek title, Basiliscos, had the exact same meaning. The fresh new Arabic identity on the celebrity try Qalb al-Asad, meaning that “the center of your lion.”
Denebola – ? Leonis (Beta Leonis)
Denebola is the second brightest celebrity inside the Leo therefore the 61st brightest celebrity throughout the sky. It’s a central succession celebrity into the stellar group A3 V. It has got an evident magnitude from dos.113 that will be just as much as 35.9 light years faraway of Earth. Brand new superstar could easily be viewed as opposed to binoculars.
Denebola have 75% alot more mass as compared to Sun, 173% of your own solar power radius, which can be twelve minutes alot more luminous. It is classified since the a good Delta Scuti adjustable, and therefore the lighting may vary some during a period of a couple of hours. Denebola exhibits differences in luminosity out-of 0.025 magnitudes regarding the 10 minutes day.
Beta Leonis is actually a fairly more youthful superstar. Their estimated age was less than eight hundred million decades. Such as for instance Regulus, Denebola try a rapid rotator, which results in a keen oblate shape of the brand new star, having a bulge at equator. The latest star’s estimated rotational acceleration are 128 km/s.
Denebola as well as showcases a strong infrared continuously, which suggests that it could have a beneficial circumstellar dust computer off dirt with its orbit.
New star belongs to the IC 2391 supercluster, an excellent association whoever associate celebs express a common action as a consequence of place, however they are not gravitationally bound. Most other famous people belonging to that particular relationship are Leader Pictoris in the the fresh new constellation Pictor, Beta Canis Minoris on the constellation Canis Slight, together with stars in the great outdoors team IC 2391, labeled as the new Omicron Velorum Team, located in the constellation Vela.
Algieba – ? Leonis (Gamma Leonis)
Gamma Leonis is a dual celebrity during the Leo. Their antique title, Algieba or Al Gieba, is inspired by the brand new Arabic Al-Jabhah, which means that “new forehead.” The fresh superstar is usually also known African Sites dating because of the the Latin title, Juba.
Algieba is made from a large star into the spectral category K1-IIIbCN0.5 and you can a great dimmer mate celebrity and this is one of the spectral class G7IIICN-We. New brighter icon try 180 times so much more luminous as compared to Sun and has now a noticeable magnitude out-of dos.28. The fresh G7 classification celebrity possess a graphic magnitude from step 3.51, is actually fifty minutes brighter compared to Sunlight, and contains ten moments the newest solar diameter. Both famous people provides an enthusiastic orbital chronilogical age of 500 ages. An environment try found about orbit of one’s pri.