81 Ceti is a G-type giant star

Giant star

A giant star is a star with substantially larger radius and luminosity than a main sequence star of the same surface temperature. Typically, giant stars have radii between 10 and 100 solar radii and luminosities between 10 and 1,000 times that of the Sun. Stars still more luminous than giants are...

 approximately 300 light years 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 Cetus

Cetus

Cetus is a constellation. Its name refers to Cetus, a sea monster in Greek mythology, although it is often called 'the whale' today. Cetus is located in the region of the sky that contains other water-related constellations such as Aquarius, Pisces, and Eridanus.-Ecliptic:Although Cetus is not...

. Based on its mass of 2.4 solar mass

Solar mass

The solar mass , , is a standard unit of mass in astronomy, used to indicate the masses of other stars and galaxies...

es, it was an A-type star when it was a main-sequence star.

Planetary system

In July 2008, the planet 81 Ceti b

81 Ceti b

81 Ceti b is an extrasolar planet approximately 317 light years away in the constellation of Cetus. It orbits the G-type giant star 81 Ceti at an average distance of 2.5 AU, taking about 2.6 years to revolve with 20.6% eccentricity...

 was announced by Sato, along with 14 Andromedae b

14 Andromedae b

14 Andromeda b or 14 And b is an extrasolar planet approximately 249 light years away in the constellation of Andromeda. The 186-day period planet orbits about 83% the Earth-Sun distance from the giant star 14 Andromedae. It has a minimum mass 4.8 times the mass of Jupiter...

 and 6 Lyncis b

6 Lyncis b

6 Lyncis b is an extrasolar planet orbiting the K-type subgiant star 6 Lyncis which is approximately 186 light years away in the Lynx constellation. The planet has a minimum mass 2.4 MJ. The orbital period for this planet is 899 days, or 2.46 years...

. The planet was found to be a super-Jupiter, with 5.3 times the mass of Jupiter

Jupiter mass

Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs....

. It takes 953 days for it to complete its orbit around the star.

See also

• 14 Andromedae
  14 Andromedae
  14 Andromedae or 14 And is an orange giant star approximately 258 light-years away in the constellation of Andromeda. The star is a suspected variable star. It is thought that 14 Andromedae was formerly a white or a yellow-white dwarf star early in its life...
  
  
• 6 Lyncis
  6 Lyncis
  6 Lyncis is a K-type subgiant star approximately 182 light years away in the constellation of Lynx. The star has mass 1.7 times, radius 5.2 times, and luminosity 15 times that of our Sun...
  
  
• 79 Ceti
  79 Ceti
  79 Ceti is a yellow subgiant star approximately 127 light-years away in the constellation Cetus. It has stopped hydrogen fusion in its core, this implies an age much higher than our Sun's 4.5 billion years. Eventually the outer layers of the star will expand and cool and the star will become a...
  
  
• 94 Ceti
  94 Ceti
  94 Ceti is a binary star system approximately 73 light-years away in the constellation Cetus.94 Ceti A is a yellow-white dwarf star with about 1.3 times the mass of the Sun while 94 Ceti B is a red dwarf star...
  
  
• HD 167042
  HD 167042
  HD 167042 is a 6th magnitude K-type giant star located approximately 163 light-years away in Draco constellation. It has mass of 1.64 times that of the Sun and the age is only 2.2 billion years old...
  
  
• List of extrasolar planets