TrES-2

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**TrES-2**
Parent star
Extrasolar planet		List of extrasolar planets
Star		GSC 03549-02811
Constellation		Draco
Right ascension	(α)	19^h 07^m 14^s
Declination	(δ)	+49° 18′ 59″
Distance		750 ± 30 ly (230 ± 10 pc)
Spectral type		G0V
Orbital elements
Semimajor axis	(a)	0.0367 ± 0.0012 AU
Eccentricity	(e)	0
Orbital period	(P)	2.47063 ± 1e-05 d
Inclination	(i)	83.9 ± 0.22°
Angular distance	(θ)	0.167 mas
Physical characteristics
Mass	(m)	1.28 ± 0.09 M_J
Radius	(r)	1.24 ± 0.09 R_J
Density	(ρ)	890 ± 120 kg/m³
Surface gravity	(g)	1.96 g
Discovery information
Discovery date		2006
Discoverer(s)		O'Donovan et al.
Detection method		Transit
Discovery site		California & Arizona
Discovery status		Published

TrES-2 is an extrasolar planet orbiting the star GSC 03549-02811 located 750 light years away. The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. Unlike Jupiter, but similar to many other planets detected around other stars, TrES-2 is located very close to its star, and belongs to the class of planets known as hot Jupiters.

1 Discovery
2 See also
3 References
4 External links
- 4.1 About
- 4.2 News

[edit] Discovery

TrES-2 was discovered by the Trans-Atlantic Exoplanet Survey by detecting the transit of the planet across its parent star using Sleuth (Palomar Observatory, California) and PSST (Lowell Observatory, Arizona), part of the TrES network of 10–cm telescopes. The discovery was confirmed by the Keck Observatory.