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	Extrasolar Visions - 51 Pegasi b
		When 51 Pegasi b was first discovered, one theory was that it was a titanic terrestrial world, a rocky planet with the mass of Jupiter.
		51 Pegasi b has about the same calculated temperature as HD 209458 b, so there is a good chance that its atmosphere is evaporating to some degree as well, although direct observations would be required to verify this.
		51 Pegasi b itself may be lightweight enough and hot enough for clouds of silicates to form, girdling the planet in white.
	www.extrasolar.net /planettour.asp?StarCatId=&PlanetId=1 (0 words)

	51 Pegasi
		With the exception of some pulsar planets, 51 Pegasi b was the first extrasolar planet to be found.
		51 Pegasi b orbits its host star at less than one eighth the distance of Mercury from the Sun so that, assuming it has a radius of 1.2 to 1.4 that of Jupiter, it must have a surface temperature of around 1,000°C.
		In 2001, astronomers at the University of Texas at Arlington published results showing that the habitable zone around 51 Pegasi, where an inner rocky planet (with suitable mass and atmospheric composition and density) can have liquid water on its surface, lies between 1.20 and 2.0 AU of the star.
	www.daviddarling.info /encyclopedia/A/51Peg.html (493 words)

	Reference.com/Encyclopedia/51 Pegasi b
		51 Pegasi b (or 51 Peg b for short) is the first planet discovered around a sun-like star outside the solar system.
		The official name of the exoplanet is 51 Pegasi b; the 'b' is used to indicate that it is the first companion of its parent star.
		It was initially assumed that 51 Pegasi b is a terrestrial planet, but it is now believed to be a gas giant.
	www.reference.com /browse/wiki/51_Pegasi_b (631 words)

	51 Pegasi
		51 Pegasi is the name of a Sun-like star 14.7 parsecs (47.9 light-years) from Earth in the constellation of Pegasus.
		51 Pegasi, numbered HIP 113357 in the Hipparcos Catalogue and HD 217014 in the Henry Draper Catalogue, is a yellow dwarf star estimated to be 7.5 billion years old, somewhat older than the Sun, 4% more massive, with more metal content and running low in hydrogen.
		The name of the exoplanet is '51 Pegasi b'; the 'b' is used to indicate that it is the first discovered companion of its parent star.
	www.xasa.com /wiki/en/wikipedia/5/51/51_pegasi.html (285 words)

	Hello! Is there anybody out there? (discoveries of other solar systems)(Cover Story) - Encyclopedia.com (Site not responding. Last check: )
		An alternative theory is that the planet, forming at a distance from 51 Pegasi comparable to Jupiter's average separation from the sun, slowly lost energy via interactions with the disk of gas and dust from which it was born.
		In this scenario, 51 Pegasi B is just one of several planets that originated in the outer parts of the disk.
		In the case of 51 Pegasi B, though, luck prevailed, and the planet was spared the fiery fate of its sisters.
	www.encyclopedia.com /doc/1G1-20301220.html (3365 words)

	Epistellar Jovian Exoplanets
		However, most scientists have now come to a consensus that the star 51 Pegasi is orbited by a large, supermassive, very close planet.
		As the first to be discovered, 51 Pegasi b has been most often researched of all the planets.
		In 1995 when 51 Pegasi b was first discovered, it was theorized that it had formed at a greater distance from its star, then slowly migrated toward the star and lost angular momentum due to interactions with the remaining planetary disk (see planet formation).
	library.thinkquest.org /27930/exoplanet.htm (395 words)

	The Orbits are Face-on, implying that the planets are actually stars.
		The jury is still out, but at this time I would bet on 51 Pegasi B being a brown dwarf, not a member of a planetary system.
		However, the probability that 51 Peg B has over 45 Jupiter masses (i.e., an extreme orbital inclination) is less than 1 in 10,000.
		51 Peg is not spinning rapidly and therefore its companion is not a massive brown dwarf (Pravdo et al.
	exoplanets.org /face_on.html (1255 words)

	51 Pegasi
		As 51 Pegasi has become one of the top 100 target stars for NASA's planned Terrestrial Planet Finder (TPF), images of this star and its position relative to the Milky Way in Earth's night sky are now available from the TPF-C team.
		On February 19, 2006, Margaret Turnbull named 51 Pegasi as a Sun-like star that is old enough to qualify as a top-five candidate for those listening for radio signals from intelligent civilizations, such as the SETI Institute.
		51 Pegasi is a yellow-orange main sequence dwarf star of spectral and luminosity type G4-5 Va, but it had been previously classified as G2-2.5 and sometimes as a subgiant (IV).
	www.solstation.com /stars2/51pegasi.htm (0 words)

	History
		This “precise radial velocity measurements” is described by scitizens.com as “as the planet orbits the star, it induces a small periodic motion of the star (both the planet and the star circle around the center of mass of the system, which is slighlty offset from the star center).
		According to extrasolar.net “Light was shed on the puzzle of the Hot Jupiters when simulations of protoplanetary disks showed that gas giants like Jupiter could migrate inward towards their stars, either due to drag against disk material or by gravitational perturbations with the disk.
		It would appear that 51 Pegasi b and its kin originally formed far from their stars but spiraled inward to their current orbits.” So this might explain how the Jupiter-like planet is surviving so close to its parent star, but we don’t know is how long it will be able to survive there.
	www.users.muohio.edu /harnacap/phy111/history.htm (793 words)

	Astrobiology: The Living Universe - Where to look for ET life
		The planet orbiting 51 Pegasi (named 51 Pegasi B) may be the first ever planet to be discovered orbiting a normal star roughly the size of the sun.
		51 Pegasi is a G-type star (G2-3 main sequence, to be exact) 42 light years from Earth.
		51 Pegasi B was detected using the 'wobble' method where anomalies in the star's radial velocity indicated that it was under the influence of a large planet nearby.
	library.thinkquest.org /C003763/index.php?page=findlife04 (1231 words)

	Extrasolar Planets - 51 Pegasi
		A una distancia de 0,05 UA de su estrella, 51 Pegasi b tiene una temperatura media de 1.300°C, suficientemente alta como para fundir el aluminio.
		Hubo mucho debate sobre 51 Pegasi b, especialmente teniendo en cuenta que la estrella muestra algunas fluctuaciones de periodicidad similar al supuesto planeta.
		En esta recreación asumimos que 51 Pegasi b es un planeta supermasivo de tipo terrestre.
	www.exoplaneten.de /51peg/spanish.html (0 words)

	Extra solar planets: Gas giants, Space Art, 51 Pegasi, 55 Cancri, Tau Bootis, 47 Ursae Majoris, 70 Virginis
		51 Pegasi B, or Bellerophon as the gas giant has been dubbed, was the first extrasolar planet to be discovered around a sunlike star.
		It orbits the main star at a distance of about 17 million km and the temperature may be around 700 K (this high temperature might have made the planet to swollen up to about 120% of Jupiter's radius), which is similar to that of Mercury.
		The planet may be so hot that the gas in the atmosphere is driven away by the heat and solar winds, creating a similar faint and comet-like tail that also might be found around the planet 51 Pegasi (which is named Bellephoron).
	www.novacelestia.com /space_art_extrasolar_planets/gas_giants.html (2592 words)

	Michel Mayor Information
		Michel Mayor (born 12 January 1942) is a professor in the Department of Astronomy at the University of Geneva.
		From 1989 to 1992 he was involved in the scientific research at ESO, from 1988 until 1991 he worked on the study of galactic structure with the International Astronomical Union, and from 1990 until 1993 he was with the Swiss Society for Astrophysics and Astronomy.
		Since the discovery of 51 Pegasi B Michel Mayor and his research team have been mainly occupied with the discovery of many additional extrasolar planets.
	www.bookrags.com /wiki/Michel_Mayor (248 words)

	eSky: 51 Pegasi (Site not responding. Last check: )
		51 Pegasi is important as possessing a planetary system.
		51 Pegasi lies about halfway along the western side of the Square of Pegasus.
		Possible appearance of a large gas giant in the 51 Pegasi system, designated 51 Pegasi b, shown here with two hypothetical moons.
	www.glyphweb.com /esky/stars/51pegasi.html (92 words)

	Other Planetary Systems
		We do not know for sure, but with the recent discoveries about 51 Pegasi, 70 Virginis and 47 Ursae Majoris the weight of evidence is now so strong that only a "devil's advocate" denies the conclusions.
		If this is due to orbital motion, these numbers suggest that a planet lies only 7 million kilometers from 51 Pegasi -- much closer than Mercury is to the Sun -- and that the planet has a mass at least half that of Jupiter.
		The 51 Pegasi planetary system is quite different from our solar system.
	seds.lpl.arizona.edu /nineplanets/nineplanets/other.html (1806 words)

	Astronomy Today 4E CW Chapter 15 -- Images Archive
		Since the announcement of the probable discovery in 1995 of a Jupiter-mass planet in orbit around the star 51 Pegasi, researchers have continued to study other nearbystars with great interest and to amass further candidates.
		The most straightforward interpretation of these observations, according to theresearchers, was that 51 Pegasi is orbited by an unseen companion having a massof about 0.5 Jupiter masses, and orbiting the star at a distance of 1/20 theEarth–Sun distance.
		Unlike 51 Pegasi b,the other two planets are at larger distances from their parent stars, and havetemperatures that are reported to be in a range that could support liquid water(if water exists on them).
	cwx.prenhall.com /bookbind/pubbooks/chaissonat4/chapter15/custom1/deluxe-content.html (1067 words)

	Extrasolar Visions - 51 Pegasi b (Site not responding. Last check: )
		The first planet ever detected around a sun-like star, 51 Pegasi b was also the first "Hot Jupiter" ever discovered.
		The edges of the planet are blue from Rayleigh Scattering, but it glows red from beneath sparse silicate clouds towards the center of its disk.
		Superheated by its torturously close parent star, 51 Pegasi b's atmosphere is bloated and is slowly evaporating into space.
	www.clannad.net /image.asp?ImageID=109 (75 words)

	Extrasolar planet - ExampleProblems.com
		The first definitive extrasolar planet around a main sequence star (51 Pegasi) was announced on October 6, 1995 by Michel Mayor and Didier Queloz of the University of Geneva.
		Both planets are believed to be several times the mass of Jupiter and orbit at distances greater than 50 AU from their primary star.
		The first verified discovery of an exoplanet (51 Pegasi B) orbiting a main sequence star (51 Pegasi) was announced on October 6, 1995 by Michel Mayor and Didier Queloz in Nature, volume 378, page 355.
	www.exampleproblems.com /wiki/index.php/Extrasolar_planet (3517 words)

	Pegasi Delta - Halopedia
		Pegasi Delta was a small world in the 51 Pegasi-B System.
		During the Human-Covenant War, the Covenant forces constructed a massive refinery on Pegasi Delta.
		With its close proximity to UNSC space, Pegasi Delta became a massive foreward resupply and refueling line for the Covenant ships making incursions in UNSC space.
	halo.wikia.com /wiki/Pegasi_Delta (146 words)

	"New Worlds: Extrasolar Planetary Systems" (Site not responding. Last check: )
		"Pegasi" is the genitive (possessive) form of the Latin name Pegasus, so 51 Pegasi can be roughly translated as "the 51st star belonging to Pegasus." The Flying Horse is highest in the evening sky in November.
		51 Pegasi B appeared to be an oddball.
		Mu Arae B was the first planet of Mu Arae to be found, but it is now known to be the third planet in order out from the star.
	members.aol.com /dsfportree/extrasolar.htm (4624 words)

	Access Feature: Planets Prefer Wacky Orbits
		The planet circling around the star 51 Pegasi B, or 51 Peg as astronomers call it for short, hugged the star in an almost impossibly close orbit, completing its circuit in a mere four days.
		Astronomers also found planets, like the ones around 16 Cygni B and 70 Virginis, that travel in long, elliptical orbits, more like the paths of comets than of planets.
		Of the 17 extrasolar planets discovered so far, only the one orbiting 47 Ursae Majoris B has a relatively circular orbit fairly far out from the star, the kind of orbit astronomers initially thought was typical.
	www.ncsa.uiuc.edu /News/Access/Stories/PlanetaryOrbits (324 words)

	[No title]
		Measurements at ESO claim to constraint the photometric variablity of the host star, 51 pegasi, to be 0.002 mag or less.
		In other words, we can be very, very confident that 51 Peg is not rotating with a 4.2 day period, leading to its imitating the presence of a planet (perhaps through spots), because at 1 solar mass a 4.2 day period corresponds to a star that's just reached the ZAMS, and they are very active.
		The goal was to detect the wobble of 51 Peg in response to the gravitational pull of the supposed planet.
	zebu.uoregon.edu /51peg.html (0 words)

	Extrasolare Planetensysteme - 51 Pegasi
		Es wird auch diskutiert, ob 51 Pegasi b eine übergroße terrestrische Welt ist.
		Hier wollen wir annehmen, dass 51 Pegasi b ein supermassiver Felsplanet mit dichter Atmosphaere ist.
		Auch 51 Peg b besitzt keine Krater, da seine Oberfläche andauernd von Vulkanausbrüchen umgekrempelt wird.
	www.exoplaneten.de /51peg (0 words)

	Extra Solar Planets
		For example, 51 Pegasi b, is the first planet discovered in the Pegasi system.
		The first extrasolar planet given a lowercase letter was the discovery of 51 Pegasi b in 1995.
		HD 209458 b was the first known extrasolar planet to have an atmosphere, more specifically, an evaporating hydrogen atmosphere.
	www.users.muohio.edu /weaksjt (2297 words)

	Otros sistemas solares. Los Nueve Planetas. AstroRED.
		En una conferencia reciente en Florencia, Italia, Michel Mayor y Didier Queloz del Observatorio de Génova, explicaron que observaron 51 Pegasi con un espectrógrafo de alta resolución y encontraron que la velocidad de la estrella en la línea de visión cambia unos 70 metros por segundo cada 4.2 dias.
		Si esto es debido a un movimiento orbital, estos números sugieren que hay un planeta a solo 7 millones de kilómetros de 51 Pegasi -- mucho más próximo de lo que Mercurio está del Sol -- y que el planeta tiene una masa de al menos la mitad de Jupiter.
		Un mundo a tan solo 7 millones de kilómetros de una estrella como 51 Pegasi debe tener una temperatura de unos 1.000 grados Celsius, prácticamente rojo vivo.
	www.astrored.net /nueveplanetas/home/other.html (0 words)

	51 Pegasi B at AllExperts
		A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Misc
		51 Pegasi b (informal name Bellerophon) is the first planet discovered around a sun-like star outside of the solar system.
		The official name of the exoplanet is 51 Pegasi b (51 Peg b for short); the 'b' is used to indicate that it is the first companion of its parent star.
	en.allexperts.com /e/0/51_Pegasi_B.htm (654 words)

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