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Kepler-296e (also known by its Kepler Object of Interest designation KOI-1422.05) is a confirmed Earth-sized exoplanet orbiting within the habitable zone of Kepler-296. The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the discovery of the exoplanet on 26 February 2014.[1]

Kepler-296e[1][2][3]
Discovery
Discovery siteKepler Space Observatory
Discovery date2014
Detection method
Transit
Orbital characteristics
Semi-major axis
0.17400 AU (26,030,000 km)
Orbital period (sidereal)
34.14234700 d
Inclination89.950
StarKepler-296
Physical characteristics
Mean radius
1.750 REarth
Temperature267 K (−6 °C; 21 °F)

    Confirmed exoplanet


    Kepler-296e is a super-Earth with a radius 1.75 times that of Earth. The planet orbits Kepler-296 once every 34.1 days.


    Habitability


    The planet was announced as being located within the habitable zone of Kepler-296, a region where liquid water could exist on the surface of the planet. As of 2017, with an ESI of 0.85, it is the fifth-most Earth-like planet after Kepler-438b, TRAPPIST-1 d, and two Gliese-designated planets, GJ 3323 b and GJ 273 b, which were both discovered in 2017.[4]

    Notable Exoplanets – Kepler Space Telescope
    Confirmed small exoplanets in habitable zones.
    (Kepler-62e, Kepler-62f, Kepler-186f, Kepler-296e, Kepler-296f, Kepler-438b, Kepler-440b, Kepler-442b)
    (Kepler Space Telescope; 6 January 2015).[5]

    See also



    References


    1. Staff (26 February 2014). "715 Newly Verified Planets More Than Triples the Number of konfirmed Kepler Planets". NASA. Archived from the original on 4 March 2014. Retrieved 8 January 2015.
    2. Lissauer, Jack J.; et al. (25 February 2014). "Validation of Kepler's Multiple Planet Candidates. II: Refined Statistical Framework and Descriptions of Systems of Special Interest". The Astrophysical Journal. 784 (1): 44. arXiv:1402.6352. Bibcode:2014ApJ...784...44L. doi:10.1088/0004-637X/784/1/44. S2CID 119108651.
    3. Rowe, Jason F. (2014). "Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems". The Astrophysical Journal. 784 (1): 45. arXiv:1402.6534. Bibcode:2014ApJ...784...45R. doi:10.1088/0004-637X/784/1/45. S2CID 119118620.
    4. "PHL @ UPR Arecibo – the Habitable Exoplanets Catalog".
    5. Clavin, Whitney; Chou, Felicia; Johnson, Michele (6 January 2015). "NASA's Kepler Marks 1,000th Exoplanet Discovery, Uncovers More Small Worlds in Habitable Zones". NASA. Retrieved 6 January 2015.



    На других языках

    [de] Kepler-296e

    Kepler-296e ist ein Exoplanet, der den Roten Zwerg Kepler-296 A im etwa 737 Lichtjahre von der Sonne entfernten Doppelsternsystem Kepler-296 im Sternbild Leier umkreist. Er ist der zweitäußerste von fünf Planeten im Planetensystem des Sterns.
    - [en] Kepler-296e

    [es] Kepler-296e

    Kepler-296e también conocido como KOI-1422.05, es el segundo exoplaneta confirmado más similar a la Tierra, solo superado por Kepler-438b. Su índice de similitud estimado en un 85 %, convierte al objeto en un posible análogo a la Tierra capaz de albergar vida extraterrestre. Fue descubierto en 2015 por el telescopio espacial Kepler, siendo el quinto planeta encontrado en torno al sistema Kepler-296.[1]

    [it] Kepler-296 Ae

    Kepler-296 Ae è un esopianeta di tipo terrestre che orbita attorno alla stella Kepler-296 A, componente principale di un sistema binario formato da due nane rosse. Scoperto nel 2014 nell'ambito della missione Kepler con il metodo del transito, è il quarto di cinque pianeti scoperti nel sistema, e il secondo pianeta conosciuto, al momento della scoperta, con l'indice di similarità terrestre più elevato (0,85), dopo Kepler-438 b. Situato nella parte interna della zona abitabile della sua stella, il Planetary Habitability Laboratory stima la temperatura di equilibrio in 267 K, con una massima al periastro di 282 K, e una minima all'afastro di 255 K, la stessa temperatura d'equilibrio media della Terra.[1]

    [ru] Kepler-296 e

    Kepler-296 e — подтверждённая землеподобная экзопланета в зоне обитаемости звезды Kepler-296 в созвездии Лебедя. Эта планета открыта космическим телескопом «Кеплер» с помощью транзитного метода. Её открытие было публично объявлено NASA 2 февраля 2014 года[2].


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