Super-earth Exoplanets Orbiting Hd 40307
by European Southern Observatory
Title
Super-earth Exoplanets Orbiting Hd 40307
Artist
European Southern Observatory
Medium
Photograph - Photograph
Description
Artist's impression of the trio of super-Earths discovered by an European team using the HARPS spectrograph on ESO's 3.6-m telescope at La Silla, Chile, after 5 years of monitoring. The three planets, having 4.2, 6.7, and 9.4 times the mass of the Earth, orbit the star HD 40307 with periods of 4.3, 9.6, and 20.4 days, respectively. Release date June 16, 2008.
Uploaded
September 10th, 2015
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