HAT-P-9
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HAT-P-9 is a magnitude 12 F-type star approximately 1500 light-years away in the constellation Auriga. A search for a binary companion star using adaptive optics at the MMT Observatory was negative.
Naming
The star HAT-P-9 is named Tevel. The name was selected in the NameExoWorlds campaign by Israel, during the 100th anniversary of the IAU. The Hebrew word תֵבֵל tevel means "World" or "Universe".
Planetary system
An exoplanet orbiting the star, HAT-P-9b, was discovered by the transit method on June 26, 2008. This is a low-density hot Jupiter, orbiting its star in just 3.9 days.
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Alef | 0.749+0.064 −0.063 MJ | 0.05287±0.00078 | 3.92281072(102) | 0.084+0.052 −0.047 | 86.44+0.37 −0.36° | 1.393+0.067 −0.065 RJ |
See also
External links
- . Exoplanets. Archived from on 2016-03-03.