Kepler-22 b
Sign in to saveKepler-22b (also known by its Kepler Object of Interest designation KOI-087.01) is an exoplanet orbiting within the habitable zone of the Sun-like star Kepler-22. It is located about from Earth in the constellation of Cygnus. It was discovered by NASA's Kepler Space Telescope in December 2011 and was the first known transiting planet to orbit within the habitable zone of a Sun-like star, where liquid water could exist on the planet's surface. The planet's host star Kepler-22 is too dim to be seen with the naked eye.
AI overview
Kepler-22b is an exoplanet discovered by NASA's Kepler Space Telescope in 2011 that orbits a Sun-like star in the constellation Cygnus within a region where liquid water could potentially exist on its surface. It matters because it was the first known planet orbiting a Sun-like star to be found in this habitable zone, making it a significant milestone in the search for potentially life-supporting worlds beyond our solar system.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Planet.name
- Kepler-22b
- Planet.image
- Kepler-22 diagram.jpg
- Planet.caption
- Artist's impression of the Kepler-22 system and its planet (sizes to scale) compared to the planets of the inner Solar System with their respective habitable zones.
- Planet.discoverer
- Kepler Science Team
- Planet.discovery_site
- Kepler telescope
- Planet.discovered
- 5 December 2011
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.eccentricity
- 0 (<0.72)
- Planet.star
- Kepler-22
- Planet.single_temperature
- (, equilibrium)
via Wikipedia infobox
Article
13 sectionsContents
- Physical characteristics
- Mass, radius, and temperature
- Host star
- Orbit
- Habitability
- Climate
- Limits on satellites
- Discovery and observation
- Past transit dates
- Appearances in media
- See also
- References
- External links
Kepler-22b (also known by its Kepler Object of Interest designation KOI-087.01) is an exoplanet orbiting within the habitable zone of the Sun-like star Kepler-22. It is located about from Earth in the constellation of Cygnus. It was discovered by NASA's Kepler Space Telescope in December 2011 and was the first known transiting planet to orbit within the habitable zone of a Sun-like star, where liquid water could exist on the planet's surface. The planet's host star Kepler-22 is too dim to be seen with the naked eye.
Kepler-22b's radius is roughly twice that of Earth. Its mass and surface composition are unknown. However, an Earth-like composition for the planet is believed to be unlikely; it is more likely to be an ocean planet or have a volatile-rich composition with a liquid or gaseous outer shell. The only parameters of the planet's orbit that are currently available are its orbital period (about ) and its inclination (approximately 90°). Evidence suggests that the planet has a moderate surface temperature, assuming that the surface is not subject to extreme greenhouse heating. In the absence of an atmosphere, its equilibrium temperature (assuming an Earth-like albedo) would be approximately , slightly higher than that of Earth's .