Gliese 208
Encyclopedia
Gliese 208 is an orange dwarf
star
(K7 spectral class
) with an apparent magnitude
of 8.9. It is about 0.47 solar mass
es.
Bobylev's calculations from 2010 suggest that this star passed as close as 1.537 parsec
s (5.0 light-year
s) from the Sun about 500,000 years ago.
Orange dwarf
A K-type main-sequence star , also referred to orange dwarf, are main-sequence stars of spectral type K and luminosity class V. These stars are intermediate in size between red M-type main-sequence stars and yellow G-type main-sequence stars...
star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
(K7 spectral class
Stellar classification
In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
) with an apparent magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
of 8.9. It is about 0.47 solar mass
Solar mass
The solar mass , , is a standard unit of mass in astronomy, used to indicate the masses of other stars and galaxies...
es.
Bobylev's calculations from 2010 suggest that this star passed as close as 1.537 parsec
Parsec
The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres ....
s (5.0 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s) from the Sun about 500,000 years ago.
External links
- Wikisky image of HD 245409 (Gliese 208)