TrES-2b

TrES-2b / Kepler-1b
An artist's impression of TrES-2b with its host star
Discovery[1]
Discovered byO'Donovan et al.
Discovery siteCalifornia & Arizona, USA
Discovery dateAugust 21, 2006
confirmed September 8, 2006
Transit
Orbital characteristics
0.03556±0.00075 AU
Eccentricity0
2.47061437(9)[2] d
Inclination83.89±0.29[2]
StarGSC 03549-02811 A[3]
Physical characteristics
1.229±0.065[2] RJ
Mass1.199±0.052[3] MJ
1.42[2][a] g
Albedo0.0136
Temperature1885+51
−66[4] K

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.[5] 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.[1]

This planet continues to be studied by other projects, and the parameters are continuously improving. A 2007 study improved stellar and planetary parameters.[6] 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.[3]

  1. ^ a b Cite error: The named reference O'Donovan2006 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Ozturk2019 was invoked but never defined (see the help page).
  3. ^ a b c Daemgen, S.; Hormuth, F.; Brandner, W.; et al. (May 2009). "Binarity of transit host stars: Implications for planetary parameters" (PDF). Astronomy & Astrophysics. 498 (2): 567–574. arXiv:0902.2179. Bibcode:2009A&A...498..567D. doi:10.1051/0004-6361/200810988. ISSN 0004-6361. S2CID 9893376.
  4. ^ Cite error: The named reference Angerhausen2015 was invoked but never defined (see the help page).
  5. ^ Kipping, David M. & Spiegel, David S. (2011-10-01). "Detection of visible light from the darkest world" (PDF). Monthly Notices of the Royal Astronomical Society: Letters. 417 (1): L88–L92. arXiv:1108.2297. Bibcode:2011MNRAS.417L..88K. doi:10.1111/j.1745-3933.2011.01127.x. ISSN 1745-3925. S2CID 119287494. Archived from the original on March 17, 2012. Retrieved 2011-08-12.{{cite journal}}: CS1 maint: date and year (link) CS1 maint: unfit URL (link)
  6. ^ Sozzetti, Alessandro; Torres, Guillermo; Charbonneau, David; et al. (August 2007). "Improving Stellar and Planetary Parameters of Transiting Planet Systems: The Case of TrES-2". The Astrophysical Journal. 664 (2): 1190–1198. arXiv:0704.2938. Bibcode:2007ApJ...664.1190S. doi:10.1086/519214. ISSN 0004-637X. S2CID 17078552.


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