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Kepler-452b
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Kepler-452b
Extrasolar planet
List of extrasolar planets|-
Artist's concept of Kepler-452b
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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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