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
|
|
SpaceX launches Starlink satellites in final launch of 2024
Posted: Sat, Jan 4 8:39 AM ET (1339 GMT) |
|
news links
|
|
Friday, January 10
Redwire Camera Technology to Launch Onboard Firefly Aerospace Blue Ghost Lunar Lander’s First Robotic Moon Mission to Deliver NASA Science
Business Wire — 6:18 am ET (1118 GMT) US Space Force Selects L3Harris to Design Resilient GPS Satellites
Inside GNSS — 6:18 am ET (1118 GMT) Rocket Lab on Track to Advance U.S. Defense Capabilities, Passing Major Milestone in Development of Spacecraft Constellation for Space Development Agency
Business Wire — 6:17 am ET (1117 GMT) In U.S.: Generals, spies and moguls cross their fingers for Bezos’ New Glenn
Aerospace America — 6:16 am ET (1116 GMT) Weather prompts Blue Origin to push back New Glenn rocket launch
UPI — 6:15 am ET (1115 GMT) |
