HAT-P-11c

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.

HAT-P-11c
Discovery
Discovery date2018
Radial velocity
Orbital characteristics
4.13 AU
9.3 y
StarHAT-P-11
Physical characteristics
Mean radius
1.19 RJ
Mass2.3 MJ

    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
    1. 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. arXiv:0901.0282. Bibcode:2010ApJ...710.1724B. doi:10.1088/0004-637X/710/2/1724.
    2. 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. arXiv:1805.09352. Bibcode:2018AJ....155..255Y. doi:10.3847/1538-3881/aabfec.
    3. 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, arXiv:2007.01871, doi:10.1093/mnras/staa2033
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.