OGLE-TR-56b

OGLE-TR-56b
OGLE-TR-56b
Extrasolar planet List of extrasolar planets
Exoplanet Comparison OGLE-TR-56 b.png
Size comparison of OGLE-TR-56b with Jupiter.
Parent star
Star OGLE-TR-56
Constellation Sagittarius
Right ascension (α) 17h 56m 35.51s [1]
Declination (δ) –29° 32′ 21.2″ [1]
Distance ~4,900 ly
(~1,500 [2] pc)
Spectral type G?
Orbital elements
Semimajor axis (a) 0.0225 ± 0.0004 AU
(3.37 Gm)
Periastron (q) 0.0225 AU
(3.37 Gm)
Apastron (Q) 0.0225 AU
(3.37 Gm)
Eccentricity (e) 0
Orbital period (P) 1.211909 ± 0.000001 d
    (29.08582 h)
Orbital speed (υ) 203 km/s
Inclination (i) 78.8 ± 0.5°
Time of transit (Tt) 3936.598 ± 0.001 JD
Physical characteristics
Mass (m) 1.29 ± 0.12 MJ
Radius (r) 1.30 ± 0.05 RJ
Density (ρ) 779 kg m-3
Surface gravity (g) 19.8 m/s² (2.02 g)
Temperature (T) ~1973 K
Discovery information
Discovery date 3 November 2002
confirmed: 4 January 2003
Discoverer(s) Konacki et al.
Detection method Transit
Discovery status Published
Database references
Extrasolar Planets
Encyclopaedia		 data
SIMBAD data

OGLE-TR-56b is an extrasolar planet located approximately 1500 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-TR-56. This planet was discovered on November 3, 2002[1] by the OGLE project using the transit method and confirmed on January 4, 2003 by the Doppler technique.[2] The period of this confirmed planet was the shortest until the confirmed discovery of WASP-12b on April 1, 2008.[3] The short period and proximity of the OGLE-TR-56 b to its host mean it belongs to a class of objects known as hot Jupiters.

The radial velocity trend of OGLE-TR-56, caused by the presence of OGLE-TR-56 b.

The planet is reported to have iron rain.[4]

See also

References

  1. ^ a b c Udalski et al.; Zebrun, K.; Szymanski, M.; Kubiak, M.; Soszynski, I.; Szewczyk, O.; Wyrzykowski, L.; Pietrzynski, G. (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: 115–128. arXiv:astro-ph/0207133. Bibcode 2002AcA....52..115U. http://acta.astrouw.edu.pl/Vol52/n2/a_52_2_1.html. 
  2. ^ a b Konacki et al.; Torres, Guillermo; Sasselov, Dimitar D.; Jha, Saurabh (2003). "High-Resolution Spectroscopic Follow-up of OGLE Planetary Transit Candidates in the Galactic Bulge: Two Possible Jupiter-Mass Planets and Two Blends". The Astrophysical Journal 597 (2): 1076–1091. arXiv:astro-ph/0306542. Bibcode 2003ApJ...597.1076K. doi:10.1086/378561. http://www.iop.org/EJ/article/0004-637X/597/2/1076/58497.html. 
  3. ^ Hebb et al.; Collier-Cameron, A.; Loeillet, B.; Pollacco, D.; Hébrard, G.; Street, R. A.; Bouchy, F.; Stempels, H. C. et al. (2009). "WASP-12b: THE HOTTEST TRANSITING EXTRASOLAR PLANET YET DISCOVERED". The Astrophysical Journal 693 (2): 1920–1928. Bibcode 2009ApJ...693.1920H. doi:10.1088/0004-637X/693/2/1920. http://www.iop.org/EJ/abstract/0004-637X/693/2/1920. 
  4. ^ Harvard University and Smithsonian Institution (2003-01-08). "New World of Iron Rain". Astrobiology Magazine. http://www.astrobio.net/pressrelease/352/new-world-of-iron-rain. Retrieved 2010-01-25. 

External links

Media related to OGLE-TR-56 b at Wikimedia Commons

Coordinates: Sky map 17h 56m 35.51s, −29° 32′ 21.2″


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