2024年10月24日 · WASP-21 b is a gas giant exoplanet that orbits a G-type star. Its mass is 0.3 Jupiters, it takes 4.3 days to complete one orbit of its star, and is 0.052 AU from its star. Its discovery was announced in 2010.

WASP-21 is a G-type star (spectral type G3V) that is reaching the end of its main sequence lifetime [4] [5] approximately 850 light years from Earth in the constellation of Pegasus. The star is relatively metal-poor, having 40% of heavy elements compared to the Sun. [5] Kinematically, WASP-21 belongs to the thick disk of the Milky Way. [1]

WASP-21 b is an exoplanet orbiting the star WASP-21, located about 750.2 light-years (230.0 pc) away from Solar System. Its discovery was publicly announced on 2010. The host star WASP-21 has apparent magnitude of 11.6, with absolute magnitude of 4.8.

{"host":"WASP-21","name":"WASP-21 b","priors":{"R*":{"units":"Sol","value":"1.14","reference":"Chen%20et%20al.%202020","uncertainty":"0.05"},"RA":{"units":"decimal ...

The planetary system WASP-21 hosts at least one planet. This list shows all planetary and stellar components in the system. It gives a quick overview of the hierarchical architecture. This table lists all planets in the system WASP-21. This table lists all stars in the system WASP-21.

Detailed information about planet WASP-21 b and its parameters.

CAMPAIGN: Planet included in one of the current observing campaings. TTVs: Planet exhibiting strong Trasit Time Variations due to another planet or orbital decay. ALERT: Observations in the last 2 years show an O-C greater than 10 minutes. HIGH: Prediction uncertainty greater than the target or less than 3 epochs observed in the last 2 years.

2025年1月17日 · NASA Atmospheric Wave-Studying Mission Releases Data from First 3,000 Orbits

The planet WASP-21b is 1.21 times the radius of Jupiter, the largest planet in our Solar System. It is vastly bigger than Earth. WASP-21b is about the same mass as Saturn. That's about a third the mass of Jupiter, which means that WASP-21b is much less dense. The star WASP-21 is 1.06 times the radius…

Detailed information about planet WASP-21 b and its parameters.