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| Discovery | |
|---|---|
| Discovered by | Kepler spacecraft |
| Discovery date | 2014 |
| Transit | |
| Orbital characteristics | |
| 0.118 AU | |
| Eccentricity | <0.33 |
| 19.9 d | |
| Star | Kepler-296 |
| Physical characteristics | |
| 2.09 Earth radii | |
| Mass | 5.02 Earth masses |
Kepler-296d is an exoplanet orbiting the M-dwarf star Kepler-296[1][2][3], located in the constellation Draco[4]. It was discovered in 2014 by the Kepler space telescope using the transit method[1][5].
Characteristics
Kepler-296d has a radius approximately 2.09 times[1] that of Earth and a mass estimated at 5.02[1] [4]Earth masses, placing it in the category of Neptune-like exoplanets. The planet orbits its host star every 19.9 days at a distance of approximately 0.118 AU[1][5]. Its orbit has an eccentricity of less than 0.33[5].
Host Star
The host star, Kepler-296, is an M-type dwarf[2]. These stars are cooler and smaller than the Sun, and often host multiple exoplanets. Kepler-296 is known to host at least five planets[1][3].
Discovery
Kepler-296d was identified in 2014[1] as part of the data collected by NASA's Kepler space telescope, which monitored the brightness of over 150,000 stars[6] to detect periodic dips in light indicative of planetary transits. The detection of Kepler-296d was achieved through the transit method[1][5], wherein a planet passes between its host star and the observer, causing a measurable decrease in the star’s apparent brightness.
See also
List of exoplanets discovered in 2014
Refereances
- ^ a b c d e f g h "Kepler-296 | NASA Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Retrieved 2025-06-28.
- ^ a b "Kepler-296 - NASA Science". 2023-11-28. Retrieved 2025-06-28.
- ^ a b https://iopscience.iop.org/article/10.1088/0004-637X/809/1/7/pdf
- ^ a b "Kepler-296". www.exoplanetkyoto.org. Retrieved 2025-06-28.
- ^ a b c d "Kepler-296 d - NASA Science". 2017-10-02. Retrieved 2025-06-28.
- ^ "Kepler / K2 - NASA Science". 2023-05-23. Retrieved 2025-06-28.