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TrES-3b

Hot Jupiter

Field	Value
name	TrES-3b / Umbäässa
image	Exoplanet Comparison TrES-3 b.png
caption	Size comparison of TrES-3b with Jupiter.
<!-- DISCOVERY -->	discoverer	O'Donovan et al.
discovery_site	United States
discovered	2007
discovery_method	Transit
<!-- ORBITAL -->	apsis	astron
semimajor	0.0226 ±
period	1.30619 ± 0.00005 d
inclination	82.15
star	GSC 03089-00929
<!-- PHYS CHARS -->	mean_radius	1.341 ± 0.081
mass	1.92 ± 0.23
density	1172 kg/m3
surface_grav	2.7 g
single_temperature	1555 K

TrES-3b is an extrasolar planet orbiting the star GSC 03089-00929. It has an orbital period of just 31 hours and nearly twice the mass of Jupiter.

The planet TrES-3b is named Umbäässa. The name was selected in the NameExoWorlds campaign by Liechtenstein, during the 100th anniversary of the IAU. In the local dialect of southern Liechtenstein, Umbäässa is a small and barely visible ant.

The radial velocity trend of the star that hosts TrES-3.

Discovery

It is the third transiting planet found by the Trans-Atlantic Exoplanet Survey. It was discovered in the constellation Hercules about 10 degrees west of Vega, the brightest star in the summer skies.

Transits in front of the star GSC 03089-00929 were detected by two 10 cm telescopes operating out of Palomar and Lowell Observatories. Transits of TrES-3 were also independently observed by the Hungarian Automated Telescope Network. Seven high-precision radial velocity measurements were made using the HIRES spectrometer at W. M. Keck Observatory, which confirmed the presence of a planetary mass companion with a minimum mass twice that of the planet Jupiter.

Characteristics

The planet's home star is slightly smaller and cooler than the Sun. The orbital period is less than one and a third days, one of the shortest known. Despite close proximity to the star, no evidence of tidal-driven orbital decay was present as in 2020, with best data fit indicating only an apsidal precession of planetary orbit.

References

(2020). "Multi-color photometry and parameters estimation of Jupiter-sized exoplanets; TRES-3b, WASP-2b and HATP-30b".
"Approved names".
"International Astronomical Union {{!}} IAU".
(2020). "Probing Transit Timing Variation and Its Possible Origin with 12 New Transits of TrES-3b". The Astronomical Journal.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

hercules-(constellation) transiting-exoplanets hot-jupiters exoplanets-discovered-in-2007 giant-planets exoplanets-with-proper-names

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