Astronomers discover 100th exoplanet
Posted: Wed, Sep 18, 2002, 7:46 AM ET (1146 GMT)
Astronomers announced Tuesday that they have discovered what they believe is the 100th extrasolar planet. The planet, 1.2 times the mass of Jupiter, has a near circular orbit 2.5 AU (375 million km) from the star Tau 1 Gruis. The planet is one of the first Jupiter analogs — planets with masses and orbits similar to Jupiter — discovered. Astronomers announcing the discovery said it was the 100th exoplanet found since the first exoplanet around a Sunlike star was found seven years ago, although the exact number of exoplanets varies from survey to survey. The number of exoplanets found is now allowing scientists to calculate statistics on the types of solar systems, and the fraction of stars with planets: about 12 percent have planets within 5 AU, according to planet hunters Geoff Marcy and Paul Butler.
Astronomers announced Tuesday that they have discovered what they believe is the 100th extrasolar planet. The planet, 1.2 times the mass of Jupiter, has a near circular orbit 2.5 AU (375 million km) from the star Tau 1 Gruis. The planet is one of the first Jupiter analogs — planets with masses and orbits similar to Jupiter — discovered. Astronomers announcing the discovery said it was the 100th exoplanet found since the first exoplanet around a Sunlike star was found seven years ago, although the exact number of exoplanets varies from survey to survey. The number of exoplanets found is now allowing scientists to calculate statistics on the types of solar systems, and the fraction of stars with planets: about 12 percent have planets within 5 AU, according to planet hunters Geoff Marcy and Paul Butler.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
FAA restricts hours for commercial launches during shutdown
Posted: Sun, Nov 9 9:05 AM ET (1405 GMT) China postpones Shenzhou-20 return on orbital debris concerns
Posted: Sun, Nov 9 8:58 AM ET (1358 GMT) |
|
news links
|
|
Saturday, November 15
Emirates to put Starlink on aircraft in major win for SpaceX
Bloomberg News — 5:11 am ET (1011 GMT) DOJ Issued Seizure Warrant to Starlink Over Satellite Internet Systems Used at Scam Compound
Wired News — 5:09 am ET (1009 GMT) New Glenn Rocket Aces Launch and Landing, Setting Up Space Force for More Options
Air and Space Forces Magazine — 5:06 am ET (1006 GMT) Blue Origin’s New Glenn rocket landed its booster on a barge at sea – an achievement that will broaden the commercial spaceflight market
The Conversation — 5:05 am ET (1005 GMT) Second Viasat Broadband Satellite Enters Space
Aviation Week — 5:04 am ET (1004 GMT) |
