23 Librae b
Encyclopedia
23 Librae b is an extrasolar Jovian planet discovered in 1999 orbiting the star 23 Librae. It orbits in its star's habitable zone
.
As of 1999, the planet was known to have at least 1.5 times Jupiter
's mass. The planet orbits 23 Librae at an average distance of 0.82 AUs, which is between that of Venus
and the Earth
in the Solar System
.
Habitable zone
In astronomy and astrobiology, a habitable zone is an umbrella term for regions that are considered favourable to life. The concept is inferred from the empirical study of conditions favourable for Life on Earth...
.
As of 1999, the planet was known to have at least 1.5 times Jupiter
Jupiter
Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,...
's mass. The planet orbits 23 Librae at an average distance of 0.82 AUs, which is between that of Venus
Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky, reaching an apparent magnitude of −4.6, bright enough to cast shadows...
and the Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
in the Solar System
Solar System
The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun...
.