- OGLE-2005-BLG-169Lb
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OGLE-2005-BLG-169Lb Extrasolar planet List of extrasolar planets Parent star Star OGLE-2005-BLG-169L Constellation Sagittarius Right ascension (α) 18h 06m 05s Declination (δ) –30° 43′ 57″ Distance 8,800 ly
(2,700 pc)Spectral type M? Observed separation Projected separation (d) 2.7 AU Source-lens
closest approach(t0) 2,453,491.88 JD Angle of source motion (α) 117.0° Physical characteristics Mass (m) 13 M⊕ Temperature (T) ~70 K Discovery information Discovery date 10 March 2006 Discoverer(s) MicroFUN,
PLANET/RoboNet, OGLEDetection method Gravitational microlensing Discovery status Published Other designations EWS 2005-BUL-169Lb, EWS 2005-BLG-169LbDatabase references Extrasolar Planets
Encyclopaediadata SIMBAD data OGLE-2005-BLG-169Lb is an extrasolar planet located approximately 2700 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-2005-BLG-169L. This planet was discovered by the OGLE project using the gravitational microlensing method. Based on a most likely mass for the host star of 0.49 solar mass, the planet has a mass of 13 times that of Earth. Its mass and estimated temperature are close to those of Uranus. It is speculated that this planet may either be an ice giant like Uranus, or a "naked super-Earth" with a solid icy or rocky surface.[1]
See also
References
- ^ *Gould et al.; Udalski, A.; An, D.; Bennett, D. P.; Zhou, A.-Y.; Dong, S.; Rattenbury, N. J.; Gaudi, B. S. et al. (2006). "Microlens OGLE-2005-BLG-169 Implies That Cool Neptune-like Planets Are Common". The Astrophysical Journal Letters 644 (1): L37–L40. arXiv:astro-ph/0603276. Bibcode 2006ApJ...644L..37G. doi:10.1086/505421. http://www.iop.org/EJ/article/1538-4357/644/1/L37/20518.html.
External links
- "OGLE-05-169L". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=OGLE-05-169L. Retrieved 2008-08-22.
- "Newfound Ice World Alters Perceptions of Planetary Systems". SPACE.com. http://www.space.com/scienceastronomy/060313_icy_superplanet.html. Retrieved 2008-08-22.
- "MICROLENSING EVENT OGLE-2005-blg-169". PLANET/RoboNet microlensing campaign. http://star-www.st-and.ac.uk/~robonet/2005/blg-169.stamps.html. Retrieved 2008-08-22.[dead link]
Coordinates: 18h 06m 05s, −30° 43′ 57″
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