OGLE-TR-113b

OGLE-TR-113b
OGLE-TR-113b
Extrasolar planet List of extrasolar planets
Exoplanet Comparison OGLE-TR-113 b.png
Size comparison of OGLE-TR-113b with Jupiter.
Parent star
Star OGLE-TR-113
Constellation Carina
Right ascension (α) 10h 52m 24.40s
Declination (δ) -61° 26′ 48.5″
Distance 1800 ± 100 ly
(550 ± 30 [1] pc)
Spectral type K
Orbital elements
Semimajor axis (a) 0.0229 ± 0.0002[2] AU
Eccentricity (e) 0[2]
Orbital period (P) 1.4324757 ± 0.0000013[2] d
Inclination (i) 88.8[2]°
Physical characteristics
Mass (m) 1.32 ±0.19 MJ
Radius (r) 1.09 ±0.03 RJ
Discovery information
Discovery date transit found in 2002,
proved to be a planet
on 14 April 2004[3]
Discoverer(s) Konacki et al[3]
Detection method Transit[3]
Discovery site  Poland[3]
Discovery status Confirmed[3]
Database references
Extrasolar Planets
Encyclopaedia		 data
SIMBAD data

OGLE-TR-113b is an extrasolar planet orbiting the star OGLE-TR-113.

In 2002 the Optical Gravitational Lensing Experiment (OGLE) detected periodic dimming in the star's light curve indicating a transiting, planetary-sized object.[4] Since low-mass red dwarfs and brown dwarfs may mimic a planet, radial velocity measurements were necessary to calculate the mass of the body. In 2004, the object was proved to be a new transiting extrasolar planet.[3]

The radial velocity trend of OGLE-TR-113, caused by the presence of OGLE-TR-113 b.

The planet has a mass 1.32 times that of Jupiter. Since the planet's inclination is known, the value is exact. It orbits the star (OGLE-TR-113) in an extremely close orbit, even closer than the famous planets 51 Pegasi b and HD 209458 b. The planet races around the star every 1.43 days. The radius of the planet is only 9% larger than Jupiter's, despite the heating effect by the star. Planets of its kind are sometimes called "super-hot Jupiters".[2]

See also

References

  1. ^ Díaz, R. F.; et al. (2007). "Millimagnitude Photometry for Transiting Extrasolar Planetary Candidates. II. Transits of OGLE-TR-113-b in the Optical and Near-IR". The Astrophysical Journal 660 (1): 850–857. arXiv:astro-ph/0701345. Bibcode 2007ApJ...660..850D. doi:10.1086/512721. 
  2. ^ a b c d e Gillon, M.; et al. (2006). "High accuracy transit photometry of the planet OGLE-TR-113b with a new deconvolution-based method". Astronomy and Astrophysics 459: 249–255. arXiv:astro-ph/0606395. Bibcode 2006A&A...459..249G. doi:10.1051/0004-6361:20065844. 
  3. ^ a b c d e f Konacki, M.; et al. (2004). "The Transiting Extrasolar Giant Planet around the Star OGLE-TR-113". The Astrophysical Journal Letters 609 (1): L37–L40. arXiv:astro-ph/0404541. Bibcode 2004ApJ...609L..37K. doi:10.1086/422600. 
  4. ^ Udalski, A.; et al. (2002). "The Optical Gravitational Lensing Experiment. Planetary and Low-Luminosity Object Transits in the Carina Fields of the Galactic Disk". Acta Astronomica 52: 317–359. arXiv:astro-ph/0301210. Bibcode 2002AcA....52..317U. http://acta.astrouw.edu.pl/Vol52/n4/a_52_4_1.html. 

External links

Media related to OGLE-TR-113 b at Wikimedia Commons

Coordinates: Sky map 10h 52m 24.40s, −61° 26′ 48.5″


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