55 Cancri f, formally identified as Harriot, is an extrasolar planet orbiting the Sun-like star 55 Cancri A. It is around 40 light years away from Earth.
Characteristics[]
55 Cancri f takes around 262 days to complete a full orbit around 55 Cancri, and is about 0.781 AU away from it. The planet was the first to be discovered outside our solar system that orbits the "habitable zone", a zone around a star in which stable amounts of liquid water could exist.
The planet itself is not likely to be habitable as it is very likely to a gas giant and does not have a solid surface. However, it is possible that the planet could possess habitable exomoons, though it is not known if 55 Cancri f possesses any.
The true mass is not known due to a limitation with the radial velocity method used to detect the planet. Instead, a minimum mass of 0.144 times that of Jupiter, or about half of Saturn. The exact temperature of the planet is also unknown but the estimated temperature is around 200-300 K (-73°C to 27 °C; -100°F to 80 °F).