TrES-2 b

TrES-2 b Image

Description: TrES-2b is an extrasolar planet orbiting the star GSC 03549-02811 located 750 light years away from the Solar System. The planet was identified in 2011 as the darkest known exoplanet, reflecting less than 1% of any light that hits it. Reflecting less light than charcoal, on the surface the planet is said to be pitch black. The planet's mass and radius indicate that it is a gas giant with a bulk composition similar to that of Jupiter. Unlike Jupiter, but similar to many planets detected around other stars, TrES-2b is located very close to its star and belongs to the class of planets known as hot Jupiters. This system was within the field of view of the Kepler spacecraft.

Physical Properties

Mass (Jupiter mass): 1.49 MJ

Radius (Jupiter radius): 1.36 RJ

Density: 0.884 g/cm³

Equilibrium Temperature: 1466.0 K

Orbital Parameters

Orbital Period: 2.47063 days

Semi-major Axis: 0.03568 AU

Eccentricity: Unknown

Inclination: 83.57°

Host Star Properties

Host Star: TrES-2

Spectral Type: G0 V

Temperature: 5850.0 K

Stellar Mass: 1.36 M

Stellar Radius: 1.12 R

Discovery Information

Planet Letter: b

Object ID: 3.237

Host ID: 2.34013

Discovery Date: 2006-11

Discovery Year: 2006

Discovery Method: Transit

Discovery Locale: Ground

Discovery Facility: TrES

Discovery Instrument: 2K CCD Sensor

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