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Topic: 55 Cancri

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	55 Cancri -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22)
		Cnc) is a nearby 6th (The property of relative size or extent) magnitude ((astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior) star in the (A configuration of stars as seen from the earth) constellation (Type genus of the family Cancridae) Cancer.
		Innermost planet, designated as 55 Cancri e is one of three currently known "hot (A giant planet with a ring of ice particles; the 8th planet from the sun) Neptunes" or "super- (The 3rd planet from the sun; the planet on which we live) Earths" with a mass only 14 Earth masses.
		Despite being third planet from the star, 55 Cancri c is still about one third closer to its star than (A heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures) Mercury is from the Sun.
	www.absoluteastronomy.com /encyclopedia/5/55/55_cancri.htm (1089 words)

	Rho1 Cancri (55 Cancri)
		Its Flamsteed designation is 55 Cancri.) The component stars are separated by a mean distance of about 1,150 astronomical units (172 billion km, or 108 billion miles).
		Cancri A is a dust disk, which is presumably a regenerated disk, extending out to about 40 astronomical units from the star with an inclination of about 25°.
		Cancri was one of the five targets of the February 14, 2003 "Cosmic Call" initiative (see interstellar radio messages).
	daviddarling.info /encyclopedia/R/rho1Cancri.html (498 words)

	Star HR 3522, rho1 Cancri, 55 Cancri (Site not responding. Last check: 2007-10-22)
		For 55 Cnc, Trilling and Brown measure an inclination of 27 degrees (i.e.
		However, they showed that 55 Cancri is responsible for more infrared emission than most stars, and this was attributed to the presence of dust around the star.
		Maps of 55 Cnc at 850 microns using the James-Clerk Maxwell telescope on Mauna Kea show that the far-infrared emission may not be centered on the star, but at three different points about 30" away from the star.
	astron.berkeley.edu /~kalas/disksite/pages/55cncnir.html (791 words)

	55 Cancri (Site not responding. Last check: 2007-10-22)
		The circle shows the location of the class G star 55 Cancri (in the constellation Cancer), also known as Rho-1 Cancri (the "55" a Flamsteed number).
		The eastern one is 55 Cancri, the western 53 Cancri.
		From 55 Cancri's planets, the neighbor would shine somewhat dimmer than Venus at her maximum as seen from Earth.
	www.astro.uiuc.edu /~kaler/sow/55cnc.html (333 words)

	55 Cancri (Site not responding. Last check: 2007-10-22)
		Innermost planet, designated as 55 Cancri e is one of three currently known "hot Neptunes" or "super-Earths" with a mass only 14 Earth masses.
		Despite being third planet from the star, 55 Cancri c is still about one third closer to its star than Mercury is from the Sun.
		55 Cancri B is a faint 13th magnitude red dwarf.
	www.worldhistory.com /wiki/5/55-Cancri.htm (807 words)

	Extrasolar Visions - 55 Cancri
		It is around 55 Cancri A that a retinue of planets has been recently detected.
		This has been borne out in recent analysis of HST Fine Guidance Sensor measurement data of 55 Cancri A. Theoretically the outer planet of the system should induce a wobble on the star large enough to be detected astrometrically.
		55 Cancri was one of the 5 targets of the 2003 "Cosmic Call" initiative.
	www.extrasolar.net /startour.asp?starid=4 (678 words)

	sciforums.com - Another Solar System
		The newfound planet, one of 15 announced Thursday by Marcy and Butler, orbits at 5.5 AU (short for "astronomical unit," or the 93-million mile distance between the Earth and the sun) from its star.
		But 55 Cancri is near enough that, when NASA's Terrestrial Planet Finder mission launches next decade, it is "quite likely that we'll be able to get a direct image of its planet," said David Spergel, a Princeton astrophysics professor.
		55 Cancri is one of 2,000 stars -- all within 150 light years -- that Butler and Marcy are surveying using their Doppler-shift analysis.
	www.sciforums.com /showthread.php?t=8237 (835 words)

	Extrasolar Planets: 55 Cancri
		55 Cancri b is a massive planet, orbiting very close to its parent star.
		55 Cancri b has more than twice the orbital radius than 51 Pegasi b and a higher mass, so it would retain most of its gases.
		A volcanically hyperactive world, where pure sulphuric acid rains on oceans of molten rock, and titanic strikes of lightning from earth-sized thunderclouds give an eerie illumination, 55 Cancri b would be among the best places to call Hell.
	www.exoplaneten.de /55Cancrib/english.html (278 words)

	55 Cancri 2 (Site not responding. Last check: 2007-10-22)
		55 Cancri A is a yellow-orange main sequence dwarf star of spectral and luminosity type G8 V, with about 0.95 times the mass of Sol (exoplanets.org), 1.1 times its diameter (Baliunas et al, 1997), and 57 to 62 percent of its luminosity.
		55 Cancri A has a widely separated, dim companion Star ("B") located about 1,100 AUs (85" at 40.9 ly) away that seems to be gravitationally bound to it.
		Thus, the planet could be a dim red dwarf, stellar companion of 55 Cancri A. The authors consider their analysis to be preliminary, needing confirmation with additional astrometric as well as other observations.
	www.solstation.com /stars2/55cnc2.htm (1824 words)

	06.13.2002 - Astronomers discover first planet in Jupiter-like orbit plus smallest planet outside solar system
		The star, 55 Cancri in the constellation Cancer, was already known to have one planet, which was announced by Butler and Marcy in 1996.
		The team of astronomers passed their data on 55 Cancri along to theoretical astronomer Greg Laughlin, assistant professor of astronomy and astrophysics at UC Santa Cruz, who conducted dynamical calculations that show an Earth-sized planet could survive in a stable orbit between the two inner gas giants and the outer planet.
		Discovery of a planet orbiting 55 Cnc at the distance of Jupiter is the culmination of 15 years of observations using the 3-meter telescope at Lick Observatory, which is owned and operated by the University of California.
	www.berkeley.edu /news/media/releases/2002/06/13_planet.html (1232 words)

	Outlier Planet: Extrasolar places that are like home: Science News Online, June 15, 2002 (Site not responding. Last check: 2007-10-22)
		55 Cancri's wobble can't be accounted for fully by the two planets now confirmed to be orbiting it.
		If a planet with the same mass as Earth were placed in the planetary system orbiting 55 Cancri, it could survive there for billions of years, according to calculations by Gregory P. Laughlin of the University of California, Santa Cruz.
		In the case of 55 Cancri, the one or two giant planets that now closely circle the star would have passed through the region where an Earth-mass planet would reside, "thereby ejecting or swallowing any proto-Earths that happened to get in their way," says Boss.
	www.sciencenews.org /20020615/fob2.asp (732 words)

	Debris disk around 55 Cancri
		The star, 55 Cancri in the constellation Cancer, was already known to have one planet, announced by Butler and Marcy in 1996.
		The disk of material is around 55 Cancri, a sun-like star, barely visible to the human eye, about 40 light years away in the constellation Cancer.
		The mass of the companion object, 55 Cancri b, was determined to be from about the mass of Jupiter to 100 or more Jupiter masses -- in which case the object would be a star, not a planet.
	www.xs4all.nl /~carlkop/trilling.html (1865 words)

	Planet Quest: News Article (Site not responding. Last check: 2007-10-22)
		The second planet, found by McArthur, speeds around 55 Cancri in just under three days, also at a fraction of the distance between Earth and the sun, at approximately 5.6 million kilometers (3.5 million miles).
		The 55 Cancri is about 5 billion years old, a bit lighter than the sun, and is located 41 light-years away in the constellation Cancer.
		"55 Cancri is a premier laboratory for the study of planetary system formation and evolution," McArthur said.
	planetquest.jpl.nasa.gov /news/cancri.html (772 words)

	Curious About Astronomy: What's so exciting about the new planet around 55 Cancri?
		I read a recent article on a newly discovered planet in the 55 Cancri system.It said something about it is possible it could be an earth twin because of its orbit in that solar system.
		55 Cancri was already know to have a planet orbiting it.
		The reason that this excited Astronomers is that it means that the planetary system around 55 Cancri has similar proportions to our own.
	curious.astro.cornell.edu /question.php?number=135 (318 words)

	Massive planet spotted in Cancer constellation
		Astronomers David Trilling and Robert Brown reported in the journal Nature that they have confirmed the large mass orbiting the star 55 Cancri is a planet, not a small star.
		Big planets like the one around 55 Cancri often make their Sun wobble in a way that can be seen from telescopes on Earth.
		In Earth's system, this dusty disk is called the Kuiper Belt and lies outside the orbit of Neptune; the cold disk of debris and dust around 55 Cancri is comparable in size, Brown said.
	chron.com /content/interactive/space/astronomy/news/1998/ds/981022.html (377 words)

	The Lick Observatory Planet Search - A Triple-Planet system around 55 Cancri
		Above: Artist's conception by Lynette Cook, showing the star 55 Cnc in the distance with the innermost two planets visible as tiny points.
		In the foreground is a hypothetical moon orbiting the large outer planet.
		Velocities for 55 Cancri, phased at the best-fit period of 14.65 d.
	exoplanets.org /esp/55cnc/55cnc.shtml (266 words)

	Planet Quest: New Class of Planets Discovered (Site not responding. Last check: 2007-10-22)
		This animation shows the planetary system around the star 55 Cancri, beginning with its outermost planet and zooming in toward the star.
		With the recent discovery of an inner Neptune-sized planet, 55 Cancri has become the first star outside of our Sun known to support four planets.
		The star 55 Cancri is about 5 billion years old, a bit lighter in weight than the Sun, and is located 41 light-years away in the constellation Cancer.
	planetquest.jpl.nasa.gov /cancri_launch.html (199 words)

	SPACE.com -- Major Discovery: Jupiter-Like Planet Could Point to Another Earth
		The star 55 Cancri lies in the dim constellation Cancer, visible in thewestern sky after sunset.
		Because the planet around 55 Cancri takes 13 years to make a complete orbit, it took equally long for enough data to accumulate to definitively identify the object.
		The 55 Cancri system "will be the best candidate for direct pictures" by a next-generation space-based observatory, said Debra Fischer, a UC Berkeley astronomer who is part of the Marcy-Butler team.
	space.com /scienceastronomy/astronomy/planet_discovery_020613.html (1743 words)

	Danzig (55 Cancri)
		The Metasoft outpost on Lubeck retreated to 55 Cancri B, a red dwarf at 1200 AU.
		All worlds in the 55 Cancri system are welcome to compete in the Danzig Hyperolympics, where any bio and/or hylo augmentation is both permitted and recommended.
		the autonomous probe Philip K. Dick was sent to 55 Cancri, a G8 class star 41 ly from Earth, and established a solar energy colllector/autofactory on a moon of the epistellar jovian 55 Cancri b.
	www.orionsarm.com /worlds/Danzig.html (1008 words)

	NASA's Observatorium -- Observation of the Week (Site not responding. Last check: 2007-10-22)
		Like most of the planets discovered to date, the one that revolves around 55 Cancri is quite massive and has a very small orbit.
		The unusual feature about 55 Cancri is that it possesses both a planet (there may actually be more than one) and a dust disk.
		The discovery of both a planet and a circumstellar disk similar to our Sun's Kuiper belt circling 55 Cancri suggests that our solar system may not be unique.
	observe.arc.nasa.gov /nasa/ootw/1999/ootw_990303/ob990303.html (592 words)

	55 Cancri Results (Site not responding. Last check: 2007-10-22)
		The resultsing seasonal light curves all show night-to-night constancy of 0.0012 magnitudes, equal to the limit of photometric precision of a single observation.
		We note, however, that the 55 Cancri "b-c" pair are likely in or near the 3:1 resonance.
		Planet "c" experiences fairly significant non-Keplerian deviations to its motion, and should thus be checked carefully within the 3-sigma transit windows.
	www.ucolick.org /~laugh/55Cnc.results.html (119 words)

	A Planet At 5 Au Around 55 Cancri (ResearchIndex) (Site not responding. Last check: 2007-10-22)
		Abstract: We report precise Doppler-shift measurements of 55 Cancri (G8 V) obtained from 1989 to 2002 at Lick Observatory.
		The velocities reveal evidence for an outer planetary companion to 55 Cancri orbiting at 5.5 AU.
		It was drawn from a sample of #50 stars observed with su#cient duration and quality to detect a giant planet at 5 AU,...
	citeseer.ist.psu.edu /626235.html (208 words)

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