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HAT-P-17 is a K-type main-sequence star about 92.4 parsecs (301 ly) away. It has a mass of about 0.857 ± 0.039 M☉. It is the host of two planets, HAT-P-17b and HAT-P-17c, both discovered in 2010. A search for a binary companion star using adaptive optics at the MMT Observatory was negative. A candidate companion was detected by a spectroscopic search of high-resolution K band infrared spectra taken at the Keck observatory.
Kepler-32 is an M-type main sequence star located about 1053 light years from Earth, in the constellation of Cygnus. Discovered in January 2012 by the Kepler spacecraft, it shows a 0.58 ± 0.05 solar mass (M☉), a 0.53 ± 0.04 solar radius (R☉), and temperature of 3900.0 K, making it half the mass and radius of the Sun, two-thirds its temperature and 5% its luminosity.
Kepler-89 is a star with four confirmed planets. Kepler-89 is a possible wide binary star.
Kepler-65 is a subgiant star slightly more massive than the Sun and has at least four planets.
Kepler-23 is a star in the northern constellation of Cygnus, the swan. It is orbited by three known exoplanets. With an apparent visual magnitude of 14.0, this star is too faint to be seen with the naked eye.
Kepler-91b is a giant planet orbiting Kepler-91, a star slightly more massive than the Sun. Kepler-91 has left the main sequence and is now a red giant branch star.
Kepler-30 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 01m 08.0746s Declination +38° 56′ 50.218″. With an apparent visual magnitude of 15.5, this star is too faint to be seen with the naked eye. Kepler-30 is exhibiting a strong starspot activity.
Kepler-29 is a Sun-like star in the northern constellation of Cygnus. It is located at the celestial coordinates: Right Ascension 19h 53m 23.6018s, Declination +47° 29′ 28.437″. With an apparent visual magnitude of 15.456, this star is too faint to be seen with the naked eye. It is a solar analog, having a close mass, radius, and temperature as the Sun. Currently the age of the star has not been determined due to its 2780 light-year distance. As of 2016 no Jovian exoplanets of 0.9–1.4 MJ have been found at a distance of 5 AU.
Kepler-23c is a Neptune-sized exoplanet orbiting the star Kepler-23, located in the constellation Cygnus. The planet is 3.12 times wider than the Earth and is 0.189 Jupiter masses. The planet was discovered using data taken from the Kepler spacecraft. It is likely a gas giant.
Kepler-24c is an exoplanet orbiting the star Kepler-24, located in the constellation Lyra. It was discovered by the Kepler telescope in January 2012. It orbits its parent star at only 0.106 astronomical units away, and at its distance it completes an orbit once every 12.3335 days.
Kepler-24d is a transiting exoplanet orbiting the star Kepler-24, located in the constellation Lyra. It was discovered by the Kepler telescope in February 2014. It orbits its parent star at only 0.051 astronomical units away, and at its distance it completes an orbit once every 4.244384 days.
Kepler-24e is a transiting exoplanet orbiting the star Kepler-24, located in the constellation Lyra. It was discovered by the Kepler telescope in February 2014. It orbits its parent star at only 0.138 astronomical units away, and at its distance it completes an orbit once every 19 days.
Kepler-89e, also known as KOI-94e, is an exoplanet in the constellation of Cygnus. It orbits Kepler-89.
Kepler-1625 is a 14th-magnitude solar-mass star located in the constellation of Cygnus approximately 7,200 light-years away. Its mass is within 5% of that of the Sun, but its radius is approximately 70% larger reflecting its more evolved state. A candidate gas giant exoplanet was detected by the Kepler Mission around the star in 2015, which was later validated as a real planet to >99% confidence in 2016. In 2018, the Hunt for Exomoons with Kepler project reported evidence for a Neptune-sized exomoon around this planet, based on observations from NASA’s Kepler mission and the Hubble Space Telescope. Subsequently, the evidence for and reality of this exomoon candidate has been subject to debate.
Kepler-560b, or more correctly Kepler-560 Bb, is a confirmed exoplanet orbiting the secondary star of the binary star system Kepler-560. It is only 287 light-years away. Though not listed in the Habitable Exoplanets Catalog, one study gives the planet an 85% chance of being in the habitable zone.
Kepler-1638 is a G-type main-sequence star located about 5,000 light years away in the constellation of Cygnus. One known exoplanet has been found orbiting the star: Kepler-1638b.As of January 2021, Kepler-1638 is the farthest star with a known exoplanet orbiting in the habitable zone.
References
- 1 2 3 Ford, Eric B.; et al. (2012). "Transit Timing Observations Fromkepler. Ii. Confirmation of Two Multiplanet Systems Via a Non-Parametric Correlation Analysis". The Astrophysical Journal. 750 (2): 113. arXiv: 1201.5409 . Bibcode:2012ApJ...750..113F. doi:10.1088/0004-637X/750/2/113. S2CID 4528963.
- ↑ Morton, Timothy D.; et al. (2016). "False Positive Probabilities for All Kepler objects of Interest: 1284 Newly Validated Planets and 428 Likely False Positives". The Astrophysical Journal. 822 (2): 86. arXiv: 1605.02825 . Bibcode:2016ApJ...822...86M. doi: 10.3847/0004-637X/822/2/86 . S2CID 20832201.
- 1 2 Hadden, Sam; Lithwick, Yoram (2014). "Densities and Eccentricities of 139Keplerplanets from Transit Time Variations". The Astrophysical Journal. 787 (1): 80. arXiv: 1310.7942 . Bibcode:2014ApJ...787...80H. doi:10.1088/0004-637X/787/1/80. S2CID 119097836.
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