51 Pegasi

51 Pegasi

star
      fifth-magnitude star located 50 light-years away from Earth in the constellation Pegasus, the first sunlike star confirmed to possess a planet. 51 Pegasi, which has physical properties (luminosity and temperature, for example) very similar to those of the Sun, became the focus of attention in 1995 when astronomers announced the detection of a planet orbiting it. The extrasolar planet is not visible from Earth, but its presence was deduced from the wobble that its gravity induces in the parent star's motion in a 4.2-day cycle. It has a mass at least half that of Jupiter and orbits surprisingly close to the star—much closer than Mercury orbits the Sun.

John Donald Fernie
 

* * *


Universalium. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Pegasi vincebas celeritatem. — См. Пегас …   Большой толково-фразеологический словарь Михельсона (оригинальная орфография)

  • IK Pegasi — Datenbanklinks zu IK Pegasi Doppelstern IK Pegasi Die Position von IK Pegasi Beobac …   Deutsch Wikipedia

  • IK Pegasi — Starbox begin name=IK Pegasi Starbox image caption=Location of IK Pegasi. Starbox observe epoch=J2000 ra=RA|21|26|26.6624cite web title=SIMBAD Query Result: HD 204188 Spectroscopic binary publisher=Centre de Données astronomiques de Strasbourg… …   Wikipedia

  • IK Pegasi — A/B Position d IK Pegasi dans la constellation de Pégase Données d observation (Époque J2000.0) Ascension droite 21h 26m 26.6624s[ …   Wikipédia en Français

  • IK Pegasi — Localización de IK Pegasi. Datos de observación (Época …   Wikipedia Español

  • Β Pegasi — Pégase (constellation) Pour les articles homonymes, voir Pégase. Pégase …   Wikipédia en Français

  • 51 Pegasi — Le cercle rouge indique la position de 51 Pegasi. Données d observation (Époque J2000.0) Ascension droite 22h 57m 27,9s Dé …   Wikipédia en Français

  • 51 Pegasi — El círculo rojo muestra la ubicación de 51 Pegasi en Pegasus. Datos de observación (Época J2000.0) Constelación …   Wikipedia Español

  • HN Pegasi — y su acompañante HN Pegasi B a la derecha. Constelación …   Wikipedia Español

  • Xi Pegasi — A Constelación Pegaso Ascensión recta α 22h 46min 41.58s Declinación δ +12º 10’ 22.4’’ Distancia …   Wikipedia Español

  • 51 Pegasi b — 51 Pegasi b[1] Impresión artística de 51 Pegasi b. Descubrimiento …   Wikipedia Español

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”