proxima centauri is the closest star to earth after the sun.
proxima centauri is the closest star to earth after the sun.
what is the closest star to earth after the sun?
proxima centauri
among the known stars, proxima centauri has been the closest star to the sun for about 32,000 years and will be so for about another 25,000 years, after which alpha centauri a and alpha centauri b will alternate approximately every 79.91 years as the closest star to the sun. in 2001, j. garcía-sánchez "et al." predicted that proxima will make its closest approach to the sun in approximately 26,700 years, coming within . a 2010 study by v. v. bobylev predicted a closest approach distance of in about 27,400 years, followed by a 2014 study by c. a. l. bailer-jones predicting a perihelion approach of in roughly 26,710 years. proxima centauri is orbiting through the milky way at a distance from the galactic centre that varies from , with an orbital eccentricity of 0.07.
proxima centauri
most of the other stars in aries visible to the naked eye have magnitudes between 3 and 5. δ ari, called boteïn, is a star of magnitude 4.35, 170 light-years away. it has an absolute magnitude of −0.1 and a spectral class of k2. ζ arietis is a star of magnitude 4.89, 263 light-years away. its spectral class is a0 and its absolute magnitude is 0.0. 14 arietis is a star of magnitude 4.98, 288 light-years away. its spectral class is f2 and its absolute magnitude is 0.6. 39 arietis (lilii borea) is a similar star of magnitude 4.51, 172 light-years away. its spectral class is k1 and its absolute magnitude is 0.0. 35 arietis is a dim star of magnitude 4.55, 343 light-years away. its spectral class is b3 and its absolute magnitude is −1.7. 41 arietis, known both as c arietis and nair al butain, is a brighter star of magnitude 3.63, 165 light-years away. its spectral class is b8 and it has a luminosity of . its absolute magnitude is −0.2. 53 arietis is a runaway star of magnitude 6.09, 815 light-years away. its spectral class is b2. it was likely ejected from the orion nebula approximately five million years ago, possibly due to supernovae. finally, teegarden's star is the closest star to earth in aries. it is a brown dwarf of magnitude 15.14 and spectral class m6.5v. with a proper motion of 5.1 arcseconds per year, it is the 24th closest star to earth overall.
aries (constellation)