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
|
|
Starship explodes during preparations for static-fire test
Posted: Sun, Jun 22 6:52 AM ET (1052 GMT) |
|
news links
|
|
Friday, July 4
Boeing to Release Second Quarter Results on July 29
Boeing — 9:42 am ET (1342 GMT) Boeing Delivers Next-Generation O3b mPOWER Satellites to SES
Boeing — 9:42 am ET (1342 GMT) Boeing Secures $2.8B Contract to Enhance U.S. Strategic SATCOM Capabilities
Boeing — 9:41 am ET (1341 GMT) Space Force picks Boeing for $2.8B strategic communications program
Defense News — 9:41 am ET (1341 GMT) The Inevitable Militarization Of Space?
Eurasia Review — 9:40 am ET (1340 GMT) |
