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|- |- |- Kepler-452b Extrasolar planet List of extrasolar planets|- Artist's concept of Kepler-452b |- Parent star Star Kepler-452 Constellation Cygnus Right ascension (a) 19h 44m 00.89s Declination (d) +44° 16' 39.2? Distance 1400 ly (430 pc) Spectral type G2 Mass (m) 1.037+0.054 -0.047 M? Radius (r) 1.11+0.15 -0.09 R? Temperature (T) 5757±85 K Metallicity 0.21±0.09 Age 6±2 Gyr Physical characteristics Mass (m) 5 ± 2 (predicted) M? Radius (r) 1.63+0.23 -0.20 R? (10.4+1.5 -1.3 Mm) Stellar flux (F?) ~1.10 ? Density (?) 6.4+6.8 -3.8 (assumed) g cm-3 Surface gravity (g) 18.5+15.1 -10.0 (assumed) m/s² (1.9+1.5 -1.0 g) Temperature (T) 265+15 -13 K (-8+15 -13 C, 17.6+27 -23.4 F Discovery information Discovery date 23 July 2015 (announced) Discoverer(s) Kepler Science Team Discovery method Transit Discovery site Kepler telescope Discovery status Published Orbital elements Semimajor axis (a) 1.046+0.019 -0.015 AU Orbital period (P) 384.843+0.007 -0.012 d Inclination (i) 89.806+0.134 -0.049° Other designations Database references Extrasolar Planets Encyclopaedia data SIMBAD data Exoplanet Archive data Open Exoplanet Catalogue data Kepler-452b is an exoplanet orbiting the G-class star Kepler-452. It was identified by the Kepler space telescope and its discovery was publicly announced by NASA on 23 July 2015. It is the first potentially rocky super-Earth planet discovered orbiting within the habitable zone of a star very similar to the Sun. It is the sixth-most Earth-like exoplanet known to date.The star is about 1,400 light-years away from the Solar System; at the speed of the New Horizons spacecraft, about 58,536 km/h (36,373 mph), it would take approximately 25.8 million years to get there. ^ a b c d e f g h i j k l "NASA Exoplanet Archive – Confirmed Planet Overview – Kepler-452b". NASA Exoplanet Archive. 2015. Retrieved 23 July 2015.  ^ a b Jenkins, Jon M.; Twicken, Joseph D.; Batalha, Natalie M.; Caldwell, Douglas A.; Cochran, William D.; Endl, Michael; Latham, David W.; Esquerdo, Gilbert A.; Seader, Shawn; Bieryla, Allyson; Petigura, Erik; Ciardi, David R.; Marcy, Geoffrey W.; Isaacson, Howard; Huber, Daniel; Rowe, Jason F.; Torres, Guillermo; Bryson, Stephen T.; Buchhave, Lars; Ramirez, Ivan; Wolfgang, Angie; Li, Jie; Campbell, Jennifer R.; Tenenbaum, Peter; Sanderfer, Dwight; Henze, Christopher E.; Catanzarite, Joseph H.; Gilliland, Ronald L.; Borucki, William J. (23 July 2015). "Discovery and Validation of Kepler-452b: A 1.6 R? Super Earth Exoplanet in the Habitable Zone of a G2 Star". The Astronomical Journal 150 (2): 56. doi:10.1088/0004-6256/150/2/56. ISSN 1538-3881. Retrieved 24 July 2015.  ^ Johnson, Michele (23 July 2015). "Twelve New Small Kepler Habitable Zone Candidates". NASA. Retrieved 24 July 2015.  ^ "The Habitable Exoplanets Catalog – Planetary Habitability Laboratory @ UPR Arecibo". upr.edu.  ^ Chou, Felicia; Johnson, Michele (23 July 2015). "NASA’s Kepler Mission Discovers Bigger, Older Cousin to Earth" (Press release). NASA. Retrieved 23 July 2015.  ^ "NASA telescope discovers Earth-like planet in star’s ‘habitable zone". BNO News. 23 July 2015. Retrieved 23 July 2015.
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