HD 138573
Encyclopedia
HD 138573 is a G-type subgiant star
in the constellation
of Serpens. It has an apparent visual magnitude of approximately 7.206. Although it is a solar-type star, similar to the Sun
, a 2005 analysis rejected this star as a solar twin owing to its lower mass, lower metallicity, and older age.
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...
in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
of Serpens. It has an apparent visual magnitude of approximately 7.206. Although it is a solar-type star, similar to the Sun
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...
, a 2005 analysis rejected this star as a solar twin owing to its lower mass, lower metallicity, and older age.