OGLE-2005-BLG-390L b

Database links to OGLE-2005-BLG-390L b

Position of OGLE-2005-BLG-390L b in the night sky

OGLE-2005-BLG-390L b , also known as OGLE-05-390L b for short , is the name of an exoplanet that once conquers the red dwarf OGLE-2005-BLG-390L at a distance of 2.6 astronomical units (AU) orbited in ten earth years . The star has about a fifth the mass of the sun and is in the constellation Sagittarius . With a distance of about 6,500 parsecs (approx. 21,000 ly ) the planet had the greatest known distance of an exoplanet from Earth at the time of its discovery . OGLE-2005-BLG-390L b has about five times the mass of the earth .

more details

The first indication of the planet was found on August 10, 2005 with the help of the Danish 1.54 telescope at the ESO La Silla observatory in Chile . The discovery was made in January 2006 as a joint result of the four projects PLANET (Head: Jean-Philippe Beaulieu, Paris, and Martin Dominik, St. Andrews), RoboNet (Head: Michael Bode, Liverpool, and Keith Horne, St. Andrews), OGLE (head: Andrzej Udalski, Warsaw) and MOA (head: Phil Yock, Auckland) published.

Fantasy image of the exoplanet with its parent star

OGLE-2005-BLG-390L b is considered to be a very Earth-like exoplanet due to its low mass and probably consists mainly of ice and rock. Due to the small size and comparatively low radiation of its " mother star", which it orbits, as well as the great distance, the surface temperature of the planet is only about 50 Kelvin (−220 ° C), so that the development of life ( as we know it ) based on liquid water is very unlikely.

The celestial body could first be detected with the help of the microlens effect .

See also

• List of exoplanets
• List of planetary systems

literature

• J.-P. Beaulieu ( inter alia): Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing. In: Nature , No. 439, 2006, pp. 437-440.

Web links

Commons : OGLE-2005-BLG-390L b  - collection of images, videos and audio files

• Nature.com news clip
• Preprint of the Nature article arxiv : astro-ph / 0601563
• PLANET collaboration
• OGLE collaboration
• MOA collaboration
• ESO press release

Individual evidence

1. ↑ ^{a b} OGLE-05-390L b. ( Memento of the original from April 7, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Extrasolar Planets Encyclopaedia ; Retrieved April 12, 2006