HD 82943 b
Encyclopedia
HD 82943 b is an extrasolar planet
approximately 89 light-year
s away in the constellation
of Hydra
. The planet was announced in 2000 by the Geneva Extrasolar Planet Search Team. The planet is the outermost planet of two.
Extrasolar planet
An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars...
approximately 89 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 away 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 Hydra
Hydra (constellation)
Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake...
. The planet was announced in 2000 by the Geneva Extrasolar Planet Search Team. The planet is the outermost planet of two.