|
|
Kepler-186f
|
|- |- |-
Kepler-186f
Extrasolar planet
List of extrasolar planets|-
Size comparison of Kepler-186 f with Earth
|-
Parent star
Star
Kepler-186
Constellation
Cygnus
Right ascension
(a)
19h 54m 36.651s
Declination
(d)
+43° 57' 18.06?
Apparent magnitude
(mV)
14.625
Distance
492±59 ly
(151±18 pc)
Mass
(m)
0.478±0.055 M?
Radius
(r)
0.472±0.052 R?
Temperature
(T)
3788±54 K
Metallicity
-0.28±0.10
Physical characteristics
Radius
(r)
1.11±0.14, 1.13–1.17 R?
Stellar flux
(F?)
0.32 (+0.06, -0.04) ?
Orbital elements
Semimajor axis
(a)
0.356±0.048, 0.393–0.408 AU
Eccentricity
(e)
Orbital period
(P)
129.9459±0.0012 d
(0.355772(3) y)
Inclination
(i)
89.9°
Discovery information
Discovery date
17 April 2014
Discoverer(s)
Discovery method
Transit
Discovery site
Kepler Space Observatory
Discovery status
Published refereed article
Other designations
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD
data
Exoplanet Archive
data
Open Exoplanet Catalogue
data
Kepler-186f is an exoplanet orbiting the red dwarf star Kepler-186, about 490 light-years (151 pc) from the Earth.It is the first planet with a radius similar to Earth's to be discovered in the habitable zone of another star. NASA's Kepler spacecraft detected it using the transit method, along with four additional planets orbiting much closer to the star (all modestly larger than Earth). Analysis of three years of data was required to find its signal. The results were presented initially at a conference on 19 March 2014 and some details were reported in the media at the time. The full public announcement was on 17 April 2014, followed by publication in Science.
^ a b c d e f Quintana, E. V.; Barclay, T.; Raymond, S. N.; Rowe, J. F.; Bolmont, E.; Caldwell, D. A.; Howell, S. B.; Kane, S. R.; Huber, D.; Crepp, J. R.; Lissauer, J. J.; Ciardi, D. R.; Coughlin, J. L.; Everett, M. E.; Henze, C. E.; Horch, E.; Isaacson, H.; Ford, E. B.; Adams, F. C.; Still, M.; Hunter, R. C.; Quarles, B.; Selsis, F. (2014-04-18). "An Earth-Sized Planet in the Habitable Zone of a Cool Star". Science 344 (6181): 277–280. arXiv:1404.5667. doi:10.1126/science.1249403. edit
"Free version" (PDF). Archived (PDF) from the original on 2014-04-18.
^ a b Johnson, Michele; Harrington, J.D. (17 April 2014). "NASA's Kepler Discovers First Earth-Size Planet In The 'Habitable Zone' of Another Star". NASA. Archived from the original on 2014-04-17.
^ Cite error: The named reference arXiv-4368 was invoked but never defined (see the help page).
^ Chang, Kenneth (17 April 2014). "Scientists Find an 'Earth Twin', or Maybe a Cousin". New York Times.
^ a b Chang, Alicia (17 April 2014). "Astronomers spot most Earth-like planet yet". Associated Press. Archived from the original on 2014-04-18.
^ Morelle, Rebecca (17 April 2014). "'Most Earth-like planet yet' spotted by Kepler". BBC News. Archived from the original on 2014-04-18.
^ Quintana, Elisa (17 April 2014). "Kepler 186f – First Earth-sized Planet Orbiting in Habitable Zone of Another Star". SETI Institute. SETI Institute. Archived from the original on 2014-04-18.
^ Staff (16 March 2014). "EBI – Search for Life Beyond the Solar System 2014 – Exoplanets, Biosignatures & Instruments". EBI2014. Archived from the original on 2014-04-18. See session 19 March 2014 – Wednesday 11:50–12:10 – Thomas Barclay: The first Earth-sized habitable zone exoplanets.
^ Klotz, Irene (20 March 2014). "Scientists Home In On Earth-Sized Exoplanet". Discovery Communications. Archived from the original on 2014-04-18.
^ Woollaston, Victoria (24 March 2014). "Has NASA found a new Earth? Astronomer discovers first same-sized planet in a 'Goldilocks zone' that could host alien life". Daily Mail. Archived from the original on 2014-03-25.
Cite error: There are tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).
|
|
Created By:
System
|
|
|
|
|