WASP-79
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WASP-79, also named Montuno, is an F-type main-sequence star about 801light-years(246parsecs) away in the constellation Eridanus. With an apparent magnitude of 10, it is much too faint to be visible to the naked eye. With 1.26M☉ and 1.73R☉, it is both larger and more massive than the Sun. Its effective temperature is 6,365 K, making it hotter than the Sun. It hosts one known exoplanet, WASP-79b.
Nomenclature
The designation WASP-79 comes from the Wide Angle Search for Planets; other designations include CD−30 1812 from the Durchmusterung catalog.
This was one of the systems selected to be named in the 2019 NameExoWorlds campaign during the 100th anniversary of the IAU, which assigned each country a star and planet to be named. This system was assigned to Panama. The approved names were Montuno for the star and Pollera for the planet, after the traditional costumes worn by a man and woman in the Panamanian folk dance El Punto.
Planetary system
The planet WASP-79b, later named Pollera, is a large, low-density hot Jupiter, discovered in 2012 by the Wide Angle Search for Planets using the transit method. It has a nearly polar orbit. Observations by the Hubble Space Telescope have been used to characterize its atmosphere, detecting molecules such as water vapor and measuring its temperature.
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination (°) | Radius |
|---|---|---|---|---|---|---|
| b / Pollera | 0.835±0.077MJ | 0.05014+0.00035 −0.00034 | 3.66239094(60) | <0.066 | 85.52±0.1 | 1.5795±0.0048RJ |
Further reading
- Gressier, A.; Lecavelier des Etangs, A.; etal. (April 2023). . Astronomy & Astrophysics. 672: A34. arXiv:. Bibcode:. doi:. ISSN.