He or she is found at an angular length out-of 177 arc seconds from Regulus A. He is dimmer chief succession superstars having an obvious magnitude off 8.14 and you will 13.5. Regulus B try a beneficial K2V celebrity together with mate is thought is a purple dwarf of your spectral style of M4V. The two stars was separated from the about 100 astronomical equipment and you will enjoys an orbital age 2,one hundred thousand years.
The primary celebrity off Regulus A beneficial is actually an earlier star, only a few mil yrs old, and has now step 3.five times the newest mass of Sunrays. New star try an especially prompt rotator, having a beneficial rotation ages of simply fifteen.9 era. This means that, it’s got a keen oblate contour. Whether or not it was in fact rotating 16% smaller, the newest centripetal push provided with new star’s gravity wouldn’t be enough to secure the star with her.
Alpha Leonis is the closest vibrant superstar with the ecliptic. For this reason, it’s daily occulted by Moonlight and you may, scarcely, because of the Mercury and you will Venus.
On the northern hemisphere, Regulus is the greatest present in the night regarding the later winter season and you may springtime. The sole daha fazla time of year when the star can’t be seen is for 1 month with the both sides out-of August 22, when it lays too near the Sunshine.
New star’s label, Regulus, function “absolutely nothing queen” or “prince” inside the Latin. The brand new star’s Greek label, Basiliscos, met with the same definition. New Arabic label for the star try Qalb al-Asad, for example “one’s heart of your lion.”
Denebola – ? Leonis (Beta Leonis)
Denebola ’s the next brightest superstar within the Leo together with 61st brightest superstar on the air. It’s a central succession celebrity on stellar class A3 V. This has an apparent magnitude out-of dos.113 which will be everything thirty-five.9 light-years faraway away from Planet. The celebrity could easily be seen in the place of binoculars.
Denebola possess 75% so much more bulk versus Sunlight, 173% of one’s solar power distance, which is twelve times a lot more luminous. It is classified as a beneficial Delta Scuti varying, and thus the lighting may vary a little over a period of a few hours. Denebola exhibits differences in luminosity out of 0.025 magnitudes about 10 moments 1 day.
Beta Leonis try a comparatively younger star. The estimated ages is actually below eight hundred mil ages. Such Regulus, Denebola is actually an unexpected rotator, which results in an oblate form of new star, which have a bulge at the equator. The brand new star’s projected rotational velocity is 128 km/s.
Denebola as well as shows a robust infrared extreme, which implies which possess a beneficial circumstellar debris computer regarding dirt in its orbit.
The fresh celebrity is one of the IC 2391 supercluster, a stellar organization whoever user famous people show a familiar activity due to room, but they are not gravitationally bound. Most other famous people that belong compared to that organization is actually Leader Pictoris within the brand new constellation Pictor, Beta Canis Minoris about constellation Canis Slight, and famous people in the great outdoors cluster IC 2391, also known as the latest Omicron Velorum Group, found in the constellation Vela.
Algieba – ? Leonis (Gamma Leonis)
Gamma Leonis is actually a dual star when you look at the Leo. Its old-fashioned label, Algieba otherwise Al Gieba, comes from the latest Arabic Al-Jabhah, and thus “this new temple.” This new superstar is usually sometimes known of the their Latin label, Juba.
Algieba consists of a big superstar to the spectral classification K1-IIIbCN0.5 and you can a dimmer partner superstar which is one of the spectral classification G7IIICN-We. New lighter large was 180 minutes significantly more luminous compared to Sun possesses an obvious magnitude off dos.twenty eight. This new G7 group star keeps an artwork magnitude out-of 3.51, try 50 minutes brighter than the Sunlight, features 10 times the fresh new solar power diameter. The 2 celebrities possess a keen orbital age five-hundred years. A world was discover regarding orbit of the pri.