HD 142093
Encyclopedia
HD 142093 is a G-type main sequence
star
in the constellation
of Serpens. It has an apparent visual magnitude of approximately 7.33. 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 and metallicity. It was also found to have much more lithium
than the Sun.
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
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...
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 7.33. 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 and metallicity. It was also found to have much more lithium
Lithium
Lithium is a soft, silver-white metal that belongs to the alkali metal group of chemical elements. It is represented by the symbol Li, and it has the atomic number 3. Under standard conditions it is the lightest metal and the least dense solid element. Like all alkali metals, lithium is highly...
than the Sun.