Proxima Centauri is a member of the Alpha Centauri star system, being identified as component Alpha Centauri C, and is 2.18° to the southwest of the Alpha Centauri AB pair. It is currently 12,950 AU (0.2 ly) from AB, which it orbits with a period of about 550,000 years.

4 天之前 · Proxima Centauri is the closest star to the Sun, about 4.2 light-years away in the Alpha Centauri system. As a red dwarf star—the most common type of star—Proxima Centauri is about seven times smaller than the Sun and a little more than half as hot, at 3,100 kelvins.

2023年10月27日 · Alpha Centauri appears as the 3rd-brightest star in Earth’s sky. But Proxima is too faint to see with the eye. It’s a small, dim, low-mass star, with its own planetary system. It has two...

3 天之前 · At a mere 4.24 light-years from Earth, Proxima Centauri holds the distinction of being our closest stellar neighbor. Nestled within the Alpha Centauri star system, this small but mighty red…

3 天之前 · The star’s small size and strong magnetic field indicate that its entire internal structure is likely convective—like a pot of boiling water. In this way it differs from the Sun, which has both convective and non-convective layers. As a result, Proxima Centauri is much more active than our Solar System’s central star.

2013年11月1日 · Proxima Centauri lies in the constellation of Centaurus (the Centaur), just over four light-years from Earth. Although it looks bright through the eye of Hubble, as you might expect from the nearest star to the solar system, Proxima Centauri is not visible to the naked eye.

1 天前 · At a distance of just over four light years, Proxima Centauri is our nearest stellar neighbor and is known to be a very active M dwarf star.

2023年10月26日 · Bottom line: Diagram and explanation from astronomer Guy Ottewell, showing the location in space of the Alpha Centauri system and, in particular, the star Proxima Centauri, the nearest star to...

2 天之前 · Proxima Centauri, the sun's closest neighbor, likely destroys any chance of an atmosphere around the closest Earth-like exoplanet, a new study finds.

2024年10月11日 · That star is Proxima Centauri, one of three known stars in the Alpha Centauri system, with the other two stars being Alpha Centauri A and B. He announced his discovery in a paper dated October...