TrES-2b
Sign in to saveAlso known as Kepler-1b, TrES-2, KOI-1b, KOI-1.01, TOI-2140b, TOI-2140.01, TIC 399860444b
TrES-2b (also known as Kepler-1b or GSC 03549-02811b) 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, although it does emit dim red glow due to its temperature. 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 arou
Key facts
- Planet.name
- TrES-2b / Kepler-1b
- Planet.image
- TrES-2b.png
- Planet.caption
- An artist's impression of TrES-2b with its host star
- Planet.discoverer
- O'Donovan et al.
- Planet.discovery_site
- California & Arizona, USA
- Planet.discovered
- August 21, 2006confirmed September 8, 2006
- Planet.discovery_method
- Transit
- Planet.apsis
- astron
- Planet.semimajor
- AU
- Planet.eccentricity
- 0
- Planet.period
- d
- Planet.star
- GSC 03549-02811 A
- Planet.surface_grav
- 1.42 g
- Planet.albedo
- 0.0136
- Planet.single_temperature
- 1885 K
via Wikipedia infobox
Wikidata facts
- Diameter
- 164000
- Radius
- 1.189
- Mass
- 1.253
- Orbital period
- 2.470613372
- Image
- Jkv.TrES-2b.png
Show 17 more facts
- Commons category
- TrES-2 b
- catalog code
- TOI-2140.01
- time of discovery or invention
- 2006-11-00
- right ascension
- 286.80849132163746
- declination
- 49.3164143006
- orbital eccentricity
- 0.018
- semi-major axis of an orbit
- 0.03555
- orbital inclination
- 83.908
- parallax
- 4.6308
- right ascension component of proper motion
- 5.434
- declination component of proper motion
- 1.572
- argument of periapsis
- 268
- albedo
- 0.0004
- stellar rotational velocity
- 0.8
- effective temperature
- 5874
- surface gravity
- 29500
- metallicity
- -0.01
via Wikidata · CC0
~5 min read
Article
10 sectionsContents
- Discovery
- Spin-orbit angle
- ''Kepler'' mission
- Physical characteristics
- Albedo
- Temperature
- See also
- Notes
- References
- External links
TrES-2b (also known as Kepler-1b or GSC 03549-02811b) 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, although it does emit dim red glow due to its temperature. 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.
This planet continues to be studied by other projects, and the parameters are continuously improving. A 2007 study improved stellar and planetary parameters. A 2008 study concluded that the TrES-2 system is a binary star system. This significantly affects the values for the stellar and the planetary parameters.