Exoplanet Discoveries, discussion of the latest finds |
Exoplanet Discoveries, discussion of the latest finds |
Guest_PhilCo126_* |
Apr 21 2009, 11:10 AM
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Guests |
Well-known exoplanet researcher Dr Michel Mayor ( discoverer of Peg 51b with Dr Didier Queloz in 1995 ) today announced the discovery of the lightest exoplanet found so far. The planet, “e”, in the famous system Gliese 581, is only about twice the mass of our Earth. The team also refined the orbit of the planet Gliese 581 d, first discovered in 2007, placing it well within the habitable zone, where liquid water oceans could exist:
http://www.eso.org/public/outreach/press-r...9/pr-15-09.html |
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Oct 19 2009, 01:32 PM
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#2
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
32 New Exoplanets Found - 10/19/09 ESO release
"Today, at an international ESO/CAUP exoplanet conference in Porto, the team who built the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6-metre telescope, reports on the incredible discovery of some 32 new exoplanets, cementing HARPS's position as the world’s foremost exoplanet hunter. This result also increases the number of known low-mass planets by an impressive 30%. Over the past five years HARPS has spotted more than 75 of the roughly 400 or so exoplanets now known" http://www.eso.org/public/outreach/press-r...9/pr-39-09.html From searching Extrasolar Planets Encyclopedia catalog I find 6 of the new planets seem to be Neptune mass or less. http://exoplanet.eu/catalog-all.php?&m...de=-7&more= BD-082823b at .045 Jmass GJ 433b at .019 Jmass GJ 667Cb at .018 Jmass HD 1255995b at .045 Jmass HD 215497b at .017Jmass HD 90156b .055Jmass Craig |
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