WASP-47 is a G-type main-sequence star of spectral type G9V, making it quite similar to the Sun. It is 1.11 M☉ and 1.16 R☉, with a temperature of 5576 K and an age of about 6.5 billion years. In comparison, the Sun has a slightly higher temperature of 5778 K but is significantly younger, at 4.5 billion years old. [7]

2024年10月24日 · WASP-47 b is a gas giant exoplanet that orbits a G-type star. Its mass is 1.17674 Jupiters, it takes 4.2 days to complete one orbit of its star, and is 0.052 AU from its star. Its discovery was announced in 2012.

Values for stellar mass, radius, density and surface gravity drawn from Table A.1., model-free photodynamical analysis in ref.

Inhabitants of WASP-47 could see an Earth transit! The planetary system WASP-47 is highly popular at the moment, following the K2 discovery of two more transiting exoplanets, and the radial-velocity detection of a longer-period outer planet, in …

2015年10月12日 · Using new data from the K2 mission, we show that WASP-47, a previously known hot Jupiter host, also hosts two additional transiting planets: a Neptune-sized outer planet and a super-Earth inner companion.

2022年2月25日 · We report new radial velocity measurements from the ESPRESSO spectrograph for WASP-47, which we use to refine the masses of WASP-47 d and WASP-47 e, with a high cadence observing strategy aimed to focus on the super-Earth WASP-47 e.

2025年3月2日 · The WASP-47 system is notable as the first known system hosting both inner and outer low-mass planetary companions around a hot Jupiter, with an ultra-short-period (USP) planet as the innermost planetary companion. The formation of such an unique configuration poses challenges to the lonely hot Jupiter formation model.

2015年10月20日 · Earlier this year, Kepler’s field of view contained the star WASP-47, a star already known to have a transiting hot Jupiter. Visual inspection of the Kepler data revealed that it was much more than that – two other planets were found transiting WASP-47, a super-Earth sized planet just inside the hot Jupiter’s orbit and a Neptune-sized ...

2015年8月10日 · Using new data from the K2 mission, we show that WASP-47, a previously known hot Jupiter host, also hosts two additional transiting planets: a Neptune-sized outer planet and a super-Earth inner companion. We measure planetary properties from the K2 light curve and detect transit timing variations, confirming the planetary nature of the outer ...

2022年4月6日 · We report new radial-velocity measurements from the Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations (ESPRESSO) spectrograph for WASP-47, which we use to refine the masses of WASP-47 d and WASP-47 e, with a high-cadence observing strategy aimed to focus on the super-Earth WASP-47 e.