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
|
|
|
|
news links
|
|
Monday, August 24
This could be the Earth-orbiting habitat that replaces the International Space Station
BBC — 5:52 am ET (0952 GMT) Musk 'may change his mind' on using Starlink over Russian territory, Zelensky says
Kyiv Independent — 5:51 am ET (0951 GMT) New contract aims to keep Space Force’s multi-billion-dollar projects on budget
Defense One — 5:49 am ET (0949 GMT) Inside NASA Marshall’s progress on Artemis III hardware, plans for new SLS upper stage
Aerospace America — 5:48 am ET (0948 GMT) Rockets or refuge? SpaceX’s potential plans raise concerns in coastal Louisiana
WVUE-TV New Orleans — 5:46 am ET (0946 GMT) |
