HD 2638 b is a planet of the star

HD 2638 HD 2638 is a ternary star system system in the equatorial constellation of Cetus. The pair have an angular separation of along a position angle of 166.7°, as of 2015. This is system too faint to be visible to the naked eye, having a ...

. It is a typical "

hot Jupiter Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital periods (). The close proximity to their stars and high surface-atmosphere temp ...

", a planet that orbits its parent star in a very tight "torch orbit". The distance to the star is less than 1/20

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

's distance from the Sun. One orbital revolution lasts only about three and half

day A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours, 1440 minutes, or 86,400 seconds. In everyday life, the word "day" often refers to a solar day, which is the length between two so ...

References

External links

SIMBADentry

The Extrasolar Planets Encyclopaediaentry
Cetus (constellation) Exoplanets discovered in 2005 Giant planets Hot Jupiters Exoplanets detected by radial velocity {{extrasolar-planet-stub