WASP-1

WASP-1 is a yellow G-type main-sequence star located approximately 1,200 light-years away in the constellation Andromeda. It is the primary star of the WASP-1 planetary system, which includes the exoplanet WASP-1b.

Stellar Characteristics:

WASP-1 is similar in size and temperature to our Sun. It has a mass estimated to be around 1.24 times the mass of the Sun and a radius approximately 1.63 times the radius of the Sun. Its effective temperature is around 6160 Kelvin, making it slightly hotter than the Sun. The star's age is estimated to be several billion years.

Planetary System:

The WASP-1 system is known to host one confirmed exoplanet, WASP-1b.

• WASP-1b: This is a hot Jupiter, a gas giant exoplanet with a short orbital period. It was discovered by the Wide Angle Search for Planets (WASP) project using the transit method. WASP-1b is significantly larger than Jupiter, with a radius of approximately 1.48 times Jupiter's radius, and orbits WASP-1 extremely closely, with an orbital period of only 2.5 days. This close proximity to its host star results in extremely high temperatures for the exoplanet.

Discovery:

WASP-1 and WASP-1b were discovered as part of the Wide Angle Search for Planets (WASP) project, a collaboration of several academic institutions dedicated to finding exoplanets. The transit method, which detects planets by observing the slight dimming of a star's light as a planet passes in front of it, was used to identify WASP-1b.