What is the apparent magnitude of Alpha Centauri?
What is the apparent magnitude of Alpha Centauri?
-0.27
Alpha Centauri/Apparent magnitude (V)
What is the distance of Alpha Centauri?
4.367 light years
Alpha Centauri/Distance to Earth
How far is the closest solar system?
4.3 light-years
Is it possible? No one knows yet, but Alpha Centauri is an obvious target. It’s the nearest star system to our sun at 4.3 light-years away. That’s about 25 trillion miles (40 trillion km) away from Earth – nearly 300,000 times the distance from the Earth to the sun.
How far north can you see Alpha Centauri?
Alpha Centauri lies in the southern constellation Centaurus and can be seen only from south of about 40° north latitude. In 2016 the International Astronomical Union designated Alpha Centauri A as Rigil Kentaurus, which comes from Rijl al-Qanṭūris, Arabic for “foot of the Centaur.”
Is Alpha Centauri bigger than the Sun?
Alpha Centauri A’s surface temperature is a few degrees Kelvin less than our sun (that is, about 5770 K [5,500 degrees C or 10,000 F]), but its greater diameter (about 25 percent more than the sun) and the overall larger surface area gives it a luminosity nearly 1.6 times that of our star.
What is the size of Alpha Centauri compared to the Sun?
Alpha Centauri A has 1.1 times the mass and 1.519 times the luminosity of the Sun, while Alpha Centauri B is smaller and cooler, at 0.907 times the Sun’s mass and 0.445 times its luminosity. The pair orbit around a common centre with an orbital period of 79.91 years. [17]
Is Alpha Centauri in the Milky Way?
Alpha Centauri is a star of the southern sky, and is not visible to observers at a latitude greater than about 25° north (roughly the latitude of Florida, Egypt or Taiwan). For those in the southern hemisphere, though, it is not hard to locate: it sits in the centre of the Milky Way, about fifteen degrees east of Crux .
Are there planets around Alpha Centauri?
The existence of a planet the size of Earth around the closest star in the Alpha Centauri star system, Proxima Centauri, has been confirmed by an international team of scientists including researchers from the University of Geneva (UNIGE). The results, which you can read all about in the journal Ast