Astronomy:HAT-P-11c
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Short description: Gas giant exoplanet orbiting HAT-P-11
| Discovery | |
|---|---|
| Discovery date | 2018 |
| Radial velocity | |
| Orbital characteristics | |
| 4.13 AU | |
| Orbital period | 9.3 y |
| Star | HAT-P-11 |
| Physical characteristics | |
| Mean radius | 1.19 |♃|J}}}}}} |
| Mass | 2.3 |♃|J}}}}}} |
HAT-P-11c is a gas giant exoplanet that orbits HAT-P-11, a K-type star. Its mass is 2.3 Jupiters, it takes 9.3 years to complete one orbit of its star, and is 4.13 AU from its star. Its discovery was announced in 2018.
Discovery
A trend in the radial velocity measurements taken to confirm the planet indicated a possible additional body in the system.[1] This was confirmed in 2018 when a second planet was detected on an approximately nine year orbit.[2] In 2020, the true mass of HAT-P-11c was measured via astrometry, along with Pi Mensae b.[3]
References
- ↑ Bakos, G. Á. et al. (2010). "HAT-P-11b: A Super-Neptune Planet Transiting a Bright K Star in the Kepler Field". The Astrophysical Journal 710 (2): 1724–1745. doi:10.1088/0004-637X/710/2/1724. Bibcode: 2010ApJ...710.1724B.
- ↑ Yee, Samuel W. et al. (2018). "HAT-P-11: Discovery of a Second Planet and a Clue to Understanding Exoplanet Obliquities". The Astronomical Journal 155 (6): 255. doi:10.3847/1538-3881/aabfec. Bibcode: 2018AJ....155..255Y.
- ↑ Xuan, Jerry W.; Wyatt, Mark C. (2020), "Evidence for a high mutual inclination between the cold Jupiter and transiting super Earth orbiting π Men", Monthly Notices of the Royal Astronomical Society 497 (2): 2096–2118, doi:10.1093/mnras/staa2033
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