View Full Version : Network of Small Telescopes Find a Big Planet

2006-Sep-08, 09:29 PM
A network of amateur astronomers has discovered an extrasolar planet located 500 light years away. This incredible discovery was made using a technique that measures the brightness of thousands of stars, watching for a periodic dimming. In this case, the Jupiter-sized planet, TrES-2, orbits its host star every 2.5 days, dimming it by 1.5%. Although the planet was discovered by a 10cm telescope, followup observations were made using the 10 metre W.M. Keck Observatory on Mauna Kea in Hawaii.

Read the full blog entry (http://www.universetoday.com/2006/09/08/network-of-small-telescopes-find-a-big-planet/)

2006-Sep-10, 09:46 AM
I wonder if these types of planets grow or shrink from the effects of their sun

2006-Sep-11, 12:14 AM
This is mentioned in wikipedia
"Spectroscopic analysis had shown that the planet had a mass about 0.6 times that of Jupiter. The occurrence of transits allowed astronomers to calculate the planet's radius, which had not been possible for any previously known exoplanet, and it turned out to have a radius some 35% larger than Jupiter's. It had been previously hypothesised that hot Jupiters particularly close to their parent star should exhibit this kind of inflation due to intense heating of their outer atmosphere."
This is a different planet of course

2006-Sep-11, 05:26 PM
Just curios, but the lead of this story says the amateur astronomers made this discover. Yet everyone listed in the article seems to be a “professional” to me. Am I missing something?