OGLE-TR-56

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OGLE-TR-56
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Sagittarius
Right ascension 17h 56m 35.51s [1]
Declination -29° 32' 21.2" [1]
Apparent magnitude (V) 16.6 [1]
Distance ~4,900 ly
(~1,500 [2] pc)
Spectral type G?

OGLE-TR-56 is a star similar to the sun[2] in the constellation Sagittarius. In 2003, an extrasolar planet was discovered orbiting the star.

[edit] OGLE-TR-56b

OGLE-TR-56b
Discovery
Discovered by Konacki et al.
Discovery date Nov 3, 2002 (confirmed: Jan 4, 2003)
Detection method Transit
Semi-major axis 0.0225 ± 0.0004 AU
Eccentricity 0
Orbital period 1.211909 ± 0.000001 d[3]
Inclination 78.8 ± 0.5°
Angular distance 0.015 mas
Physical characteristics
Mean radius 1.30 ± 0.05 RJ[3]
Mass 1.29 ± 0.12 MJ[3]

OGLE-TR-56b is an extrasolar hot jupiter discovered in 2002[1] by the OGLE project using the transit method and confirmed in 2003 by the Doppler technique.[2] As of 2007 it has the shortest orbital period of any known extrasolar planet.

[edit] References

  1. ^ a b c d Udalski et al. (2002). "The Optical Gravitational Lensing Experiment. Search for Planetary and Low-Luminosity Object Transits in the Galactic Disk. Results of 2001 Campaign - Supplement". Acta Astronomica 52: 115. (web Preprint)
  2. ^ a b c Konacki et al. (2003). "An extrasolar planet that transits the disk of its parent star". Nature 421: 507–509. doi:10.1038/nature01379. (web Preprint)
  3. ^ a b c Pont et al. (2007). "The "666" collaboration on OGLE transits I. Accurate radius of the planets OGLE-TR-10b and OGLE-TR-56b with VLT deconvolution photometry". Astronomy and Astrophysics 465: 1069–1074. doi:10.1051/0004-6361:20066645. (web Preprint)

[edit] External links


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