Astronomy:Kepler-296d
| Discovery | |
|---|---|
| Discovered by | Kepler spacecraft |
| Discovery date | 2014 |
| Transit | |
| Orbital characteristics | |
| 0.118 AU | |
| Eccentricity | <0.33 |
| Orbital period | 19.9 d |
| Star | Kepler-296 |
| Physical characteristics | |
| Mean radius | 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
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "Kepler-296 | NASA Exoplanet Archive". https://exoplanetarchive.ipac.caltech.edu/overview/Kepler-296.
- ↑ 2.0 2.1 "Kepler-296 - NASA Science" (in en-US). 2023-11-28. https://science.nasa.gov/exoplanets/star-catalog/kepler-296/.
- ↑ 3.0 3.1 Barclay, Thomas; Quintana, Elisa V.; Adams, Fred C.; Ciardi, David R.; Huber, Daniel; Foreman-Mackey, Daniel; Montet, Benjamin T.; Caldwell, Douglas (2015). "The Five Planets in the Kepler-296 Binary System All Orbit the Primary: A Statistical and Analytical Analysis". The Astrophysical Journal 809 (1): 7. doi:10.1088/0004-637X/809/1/7. Bibcode: 2015ApJ...809....7B. https://iopscience.iop.org/article/10.1088/0004-637X/809/1/7/pdf.
- ↑ 4.0 4.1 "Kepler-296". http://www.exoplanetkyoto.org/exohtml/Kepler-296.html.
- ↑ 5.0 5.1 5.2 5.3 "Kepler-296 d - NASA Science" (in en-US). 2017-10-02. https://science.nasa.gov/exoplanet-catalog/kepler-296-d/.
- ↑ "Kepler / K2 - NASA Science" (in en-US). 2023-05-23. https://science.nasa.gov/mission/kepler/.
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