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Kepler-33b orbits its host star with 4 other planets. All five planets orbit its star closer than Mercury does to the Sun. [5] Of those five, Kepler-33b is closest. [4] All Kepler-33 planets are too close to be in the habitable zone.
K2-33b (also known by its EPIC designation EPIC 205117205.01) is a very young super-Neptune exoplanet, orbiting the pre-main-sequence star K2-33. It was discovered by NASA's Kepler space telescope on its "Second Light" mission. It is located about 453 light-years (139 parsecs) away from Earth in the constellation of Scorpius
Kepler-33 is a star about 4,000 light-years (1,200 parsecs) in the constellation of Cygnus, with a system of five known planets.Having just begun to evolve off from the main sequence, [4] its radius and mass are difficult to ascertain, although data available in 2020 shows its best-fit mass of 1.3M ☉ and radius of 1.6R ☉ are compatible with a model of a subgiant star.
The rotation period of the star, 6.3 days, is known from the light curve obtained by the Kepler spacecraft, causing periodic variations of about 2% in the brightness of the star as star spots appear and disappear from Earth's line of sight. This stellar variability was removed for the analysis of the transit signal of the planet K2-33b. [2]
This is a partial list of exoplanets discovered by the Kepler space telescope, running from star number 1 through 500, inclusive. Table keys ... Kepler-33b: Transit ...
The densest transiting exoplanet known is CoRoT-3b, which has density of 26.4 g/cm 3; the diffusest transiting planet known is Kepler-12b, which has density of only 0.111 g/cm 3. Previously, the longest period of any transiting planets was Kepler-1647b , which takes 1107 days to orbit its (double) stars.
HD 189733 b is an exoplanet in the constellation of Vulpecula approximately 64.5 light-years (19.8 parsecs) away [7] from the Solar System.Astronomers in France discovered the planet orbiting the star HD 189733 on October 5, 2005, by observing its transit across the star's face. [1]
List of exoplanets discovered by the Kepler space telescope List of exoplanets observed during Kepler's K2 mission List of extrasolar candidates for liquid water