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Topic: Ursae Majoris

	Xi Ursae Majoris - Wikipedia, the free encyclopedia
		The companion star, Xi Ursae Majoris B, has an apparent magnitude of +4.87 and is separated from the primary by 0.05 arcseconds.
		Xi Ursae Majoris was the first visual double star for which an orbit was calculated, when it was computed by Félix Savary in 1828.
		B's binary companion, denoted Xi Ursae Majoris Bb, is unresolved, but the binary star is known to have an orbital period of 3.98 days.
	en.wikipedia.org /wiki/Alula_Australis (249 words)

	Encyclopedia: 47 Ursae Majoris (Site not responding. Last check: 2007-10-18)
		47 Ursae Majoris (abbreviated 47 UMa) is a 5th magnitude yellow dwarf star in the constellation of Ursa Major.
		The second planet, 47 Ursae Majoris c, orbits further out than planet b, about the distance of the outer asteroid belt in our Solar system.
		The planetary system of 47 Ursae Majoris shares other similarities with our Solar system, too: the ratio between the masses of b and c is 3.34 (3.32 between Jupiter and Saturn), and the ratio between orbital distances of the planets is 0.560 (0.545).
	www.nationmaster.com /encyclopedia/47-Ursae-Majoris (1878 words)

	Encyclopedia: W Ursae Majoris (Site not responding. Last check: 2007-10-18)
		W Ursae Majoris (W UMa) is a variable star in the constellation Ursa Major.
		It is the prototype of a class of contact binary variables.
		W Ursae Majoris has equatorial coordinates RA 9h 43m 45.4s, Dec +55° 57' 10" (epoch J2000).
	www.nationmaster.com /encyclopedia/W-Ursae-Majoris (619 words)

	Ursa Major
		Ursa Major is a constellation visible throughout the year in the northern hemisphere.
		Several galaxies are found in Ursa Major, including the pair M81 (one of the brightest galaxies in the sky) and M82 above the bear's head, and M101, a beautiful spiral northwest of η Ursae Majoris.
		Hera was not pleased with the placement of Callisto and Arcas in the sky, so she asked her nurse, Tethys, to help.
	www.sciencedaily.com /encyclopedia/ursa_major (831 words)

	DV Ursae Majoris: An Eclipsing Dwarf Nova
		DV Ursae Majoris is a cataclysmic variable star system that is located in the Ursa Major constellation.
		In DV Ursae Majoris, the primary, more massive star is a white dwarf and the secondary star is an M dwarf.
		This result is different from that found in the research by Harvey and Patterson (1995) in their study of another variable system, CY Ursae Majoris, where the harmonic frequencies are larger than multiple integers of the fundamental.
	www.watson.ibm.com /leo/ScienceResearch/jjhs/hall2001.html (1502 words)

	47 Ursae Majoris -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-18)
		Its (additional info and facts about spectral type) spectral type, G1 V, is similar to our (A typical star that is the source of light and heat for the planets in the solar system) Sun.
		On the other hand, the planet is still too close to its parent star as its (Movement downward resulting from gravitational attraction) gravitational influence may have prevented formation of any (The 3rd planet from the sun; the planet on which we live) Earth-like planets in the system.
		The second planet, 47 Ursae Majoris c, orbits further out than planet b, about the distance of the outer (The region of interplanetary space between Mars and Jupiter where most asteroids are found) asteroid belt in our Solar system.
	www.absoluteastronomy.com /encyclopedia/4/47/47_Ursae_Majoris.htm (438 words)

	Ursa Major (Site not responding. Last check: 2007-10-18)
		W Ursae Majoris is the prototype of a class of contact binary variable stars, and ranges in magnitude between 7.75m and 8.48m.
		The Ursa Major group a real star cluster in space, which would be noticeable from any given direction for a distance of at least several hundred light years.
		In earlier times, in Greek mythology, Ursa Major was not considered as a bear, and instead its 3 bright stars (situated in the tail) were considered to be apples growing on a tree (sometimes represented by the fainter stars in the remainder of the constellation).
	www.worldhistory.com /wiki/U/Ursa-Major.htm (1387 words)

	* Alpha Ursae Majoris - (Astronomy): Definition (Site not responding. Last check: 2007-10-18)
		The star Dubhe (Scientific Name Alpha Ursae Majoris) is located at right ascension 11h 3.728m and declination 61° 45.050'.
		Dubhe is a relatively bright star with a magnitude of 2.
		Dubhe (Alpha Ursae Majoris) is a well-known, with a close 4.8m companion which orbits every 44.66 years.
	www.mimihu.com /astronomy/alpha_ursae_majoris.html (87 words)

	W Ursae Majoris -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-18)
		W Ursae Majoris (W UMa) is a (A star that varies noticeably in brightness) variable star in the (A configuration of stars as seen from the earth) constellation (A constellation outside the Zodiac that rotates around the North Star) Ursa Major.
		The depths of the brightness (additional info and facts about minima) minima are usually equal because both stars have nearly equal (additional info and facts about luminosities) luminosities.
		W Ursae Majoris has (additional info and facts about equatorial coordinates) equatorial coordinates (Ancient hawk-headed Egyptian sun god; a universal creator) RA 9h 43m 45.4s, (The last (12th) month of the year) Dec +55° 57' 10" ((A unit of geological time) epoch (The 10th letter of the Roman alphabet) J2000).
	www.absoluteastronomy.com /encyclopedia/w/w/w_ursae_majoris.htm (343 words)

	Epsilon Ursae Majoris - Wikipedia, the free encyclopedia
		Alioth, 77 Ursae Majoris, HR 4905, HD 112185, BD+56 1627, FK5 483, HIP 62956, SAO 28553, GC 17518, CCDM 12540+5558
		Epsilon Ursae Majoris (ε UMa / ε Ursae Majoris) is the brightest star in the constellation Ursa Major (despite its Bayer designation being merely "epsilon"), and at magnitude 1.76 is the thirty-first brightest star in the sky.
		It is the star in the "tail" of the bear closest to its "body", and is also a member of the large and diffuse Ursa Major moving group.
	www.wikipedia.org /wiki/Alioth (280 words)

	Discovery of the first spectroscopic binary (Site not responding. Last check: 2007-10-18)
		In the Third Annual Report of the Henry Draper Memorial, attention is called to the fact that the K line in the spectrum of Zeta Ursae Majoris occasionally appears double.
		The hydrogen lines of Zeta Ursae Majoris are so broad that it is difficult to decide whether they are also separated into two or not.
		The predicted doubling of the lines of Zeta Ursae Majoris on December 8th was confirmed on that day by each of three photographs.
	leo.astronomy.cz /mizar/pickering.htm (831 words)

	Hawaiian Astronomical Society Printable Object Descriptions Deepsky Atlas - Ursa Major
		NGC4605 is an edge on spiral galaxy located 5.5° northeast of Megrez (Delta Ursae Majoris, the star at the junction of Dipper's bowl and handle).
		NGC3949 lies 1.3° east of Chi Ursae Majoris, and is the third bright galaxy of the group.
		The nearest "bright" star is Tania Australis (Mu Ursae Majoris), 46' to the east.
	www.hawastsoc.org /deepsky/uma/print.html (936 words)

	Mizar
		The Mizar system is also a language for writing strictly formalized mathematical definitions and proofs, for a computer program to check these proofs, and for a library containing definitions and theorems.
		Mizar is a star in the constellation Ursa Major, lying just at the corner of the Big Dipper's handle.
		The components are all members of the Ursa Major moving cluster, a mostly dispersed group of stars sharing a common birth, as determined by proper motion.
	www.sciencedaily.com /encyclopedia/mizar (408 words)

	0608 (Site not responding. Last check: 2007-10-18)
		Beta Ursa Majoris is only 62 light years away from the Earth.
		Beta Ursa Majoris, together with Alpha Ursa Majoris, is known as the pointer, because a line drawn northward through them points to Polaris, the Pole Star.
		It has been determined from ground-based observations to have essentially no polarization and will hence be used to determine, to high precision, the WUPPE signal that corresponds to zero polarization at the various ultraviolet wavelengths.
	www.sal.wisc.edu /WUPPE/objects/0600/0608.html (90 words)

	47 Ursae Majoris - Encyclopedia, History, Geography and Biography
		It currently has two known planets, designated as 47 Ursae Majoris b and c.
		On the other hand, the planet is still close enough to its parent star that its gravitational influence may have prevented formation of any Earth-like planets in the system.
		47 Ursae Majoris, 47 Ursae Majoris b, 47 Ursae Majoris c, References and External links.
	www.arikah.net /encyclopedia/47_Ursae_Majoris (424 words)

	* Delta Ursae Majoris - (Astronomy): Definition (Site not responding. Last check: 2007-10-18)
		Megrez is a relatively dim star with a magnitude of 3.
		Delta Ursae Majoris is named Megrez, from the Arabic meaning ‘root of the tail’.
		Gamma Ursae Majoris is called Phad or Phecda, from the Arabic word meaning ‘the thigh’.
	www.mimihu.com /astronomy/delta_ursae_majoris.html (146 words)

	AAVSO: SU UMa, February 2000 Variable Star Of The Month
		Discovered in 1908 by L. Ceraski of Moscow, the variable SU Ursae Majoris is located near the tip of the nose of the Great Bear constellation of Ursa Major, about 3° northwest of the bright star omicron Ursae Majoris.
		Isles, J.E. The Supercycles of SU Ursae Majoris.
		"Outburst Characteristics in the Dwarf Nova SU Ursae Majoris." accepted for publication in Publications of the Astronomical Society of the Pacific.
	www.aavso.org /vstar/vsotm/0200.stm (1433 words)

	* 47 Ursae Majoris - (Astronomy): Definition
		It is likely that more planetary systems will be discovered using the methods that found 51 Pegasi, 70 Virginis and 47 Ursae Majoris.
		The new planet orbiting 47 Ursae Majoris is about three-fourths as massive as Jupiter, the largest planet in our own solar system, and follows a circular orbit around the star.
		On Jan. 17, 1996 at the AAS meeting, G. Marcy and P. Butler from the University of California San Francisco State and the University of California Berkeley announced discovery of two planets orbiting nearby solar-type stars, 47 Ursae Majoris and 70...
	en.mimi.hu /astronomy/47_ursae_majoris.html (189 words)

	61 Ursae Majoris
		It lies in the southeastern corner (11:41:03.02+34:12:05.89, ICRS 2000.0) of Constellation Ursa Major, the Great Bear, which also encompasses the Big Dipper or Plow (Plough) -- east of Alula Borealis (Nu Ursae Majoris) and northeast of Alula Australis (Xi or Ksi Ursae Majoris).
		61 Ursae Majoris is a yellow-orange main sequence dwarf star of spectral and luminosity type G8 Ve, with about 81 percent of Sol's mass, 84 to 89 percent of its diameter (Morossi and Malagnini, 1985, page 369; and Johnson and Wright, 1983, page 673), and around 57 percent of its luminosity.
		The star may be only 40 to 105 percent as enriched as Sol with elements heavier than hydrogen ("metallicity"), based on its abundance of iron (Cayrel de Strobel et al, 1991, page 292).
	www.solstation.com /stars/61uma.htm (555 words)

	47 Ursae Majoris (Site not responding. Last check: 2007-10-18)
		The circle shows the location of the class G1 star 47 Ursae Majoris (in the constellation Ursa Major).
		The orbit of the inner, larger, planet is somewhat eccentric, and carries the planet as roughly 10 percent closer and farther from the star than average.
		Continuing the solar similarity, 47 Ursae Majoris rotates with a period of 24 days, just slightly less than does the Sun, and has a metal content very much solar, unlike many of the other planet- holding stars.
	www.astro.uiuc.edu /projects/sow/47uma.html (279 words)

	Read about 47 Ursae Majoris at WorldVillage Encyclopedia. Research 47 Ursae Majoris and learn about 47 Ursae Majoris ... (Site not responding. Last check: 2007-10-18)
		Paul Butler searched through their observational data for extrasolar planets and soon discovered two, 47 Ursae Majoris b and 70 Virginis b.
		On the other hand, the planet is still too close to its parent star as its gravitational influence may have prevented formation of any Earth-like planets in the system.
		The second planet, 47 Ursae Majoris c, orbits further out than planet b, about the distance of the outer
	encyclopedia.worldvillage.com /s/b/47_Ursae_Majoris (383 words)

	47 Ursae Majoris
		It lies in the southcentral part (10:59:28.0+40:25:48.9, ICRS 2000.0) of Constellation Ursa Major, the Great Bear -- southeast of Omega UMa, southwest of Psi UMa, northeast of 46 UMa, and northwest of 55 UMa (see another chart with 47 UMa labeled).
		Recently, astronomers at the University of Texas at Arlington performed refined calculations to determine that the habitable zone around 47 Ursae Majoris, where an inner rocky planet (with suitable mass and atmospheric gas composition and density) can have liquid water on its surface, lies between 1.05 and 1.83 AUs of the star.
		A terrestrial planet orbiting 47 Ursae Majoris at around the first inner tenth of the orbital distance of the calculated habitable zone would have an average orbital distance just under 1.13 AU, between the orbits of Earth and Mars in the Solar System.
	www.solstation.com /stars2/47uma.htm (876 words)

	W Ursae Majoris - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-10-18)
		W Ursae Majoris - Encyclopedia, History, Geography and Biography
		The depths of the brightness minima are usually equal because both stars have nearly equal luminosities.
		This encyclopedia, history, geography and biography article about W Ursae Majoris contains research on
	www.arikah.com /encyclopedia/W_UMa (250 words)

	eSky: 10 Ursae Majoris (Site not responding. Last check: 2007-10-18)
		Centuries ago, it belonged to the constellation of the Great Bear, as the designation Ursae Majoris suggests.
		10 Ursae Majoris has about the same mass as Earth's Sun, but is considerably hotter.
		The galactic position and direction of 10 Ursae Majoris relative to Earth's Sun.
	www.glyphweb.com /esky/stars/10ursaemajoris.html (107 words)

	Ursa Major
		Although the whole of Ursa Major is difficult to see without very dark skies, the Big Dipper is one of the most recognizable patterns in the northern sky.
		This veiled message for the slaves to flee northward was passed along in the form of songs since a large fraction of the slave population was illiterate.
		Check out the Ursa Major page which is part of the Texas Astronomical Society's Constellation of the Month Series.
	www.astro.wisc.edu /~dolan/constellations/constellations/Ursa_Major.html (430 words)

	Phecda
		The spectral type implies a temperature of 9900 K, a mass of about 3 solar masses, and a diameter about 2.5 times that of the sun.
		According to Burnham, Phecda is part of a star cluster including at least 16 other stars from the Ursa Major area of the sky, as well as Alioth, Merak, Alcor, Mizar, and Megrez in the Big Dipper.
		The Ursa Major cluster represents an ellipsoidal volume of space about 30 ly long by 18 ly in width.
	domeofthesky.com /clicks/phecda.html (135 words)

	Sapta Rishi - Great Bear - the astral divisor.
		And this bear's claw is the ancient sage's defining cleaver.
		Alkaid (Benetnash, Benetnasch, Elkeid): Chief Daughter of the Bier, Eta Ursæ Majoris.
		the Pleiades are thus Six-Fish (Aru-min), and Ursa major is the Seven-Fish (Elu-Min).
	www.geocities.com /sarabhanga/rishi.html (722 words)

	Extrasolar Planets - 47 Ursae Majoris
		47 Ursae Majoris b is a rather promising world, orbiting its parent star at a distance where liquid water may still exist.
		But 47 Ursae Majoris b is a cold world, though.
		Not as dry as with 70 Virginis b and not as frozen as with Jupiter, the moons of 47 Ursae Majoris b would be something in between.
	www.exoplaneten.de /47uma/english.html (204 words)

	[12.09] Refined Light Curve Parameters for the W Ursae Majoris Variable V802 Aquilae (Site not responding. Last check: 2007-10-18)
		New photometric observations were obtained for V802 Aql, a W Ursae Majoris eclipsing binary system, between the nights of July 22, 2000 and August 31, 2003.
		V802 Aql was originally classified as a high amplitude \delta Scuti (Bakos, 1950) and more recently as a W Ursae Majoris (Van Cauteren et.
		Light curves generated from our data confirm the classification as a W Ursae Majoris type system.
	www.aas.org /publications/baas/v35n5/aas203/198.htm (143 words)

	DFS 2004 Astrophysics abstract (Site not responding. Last check: 2007-10-18)
		Slow variations in the pulsation periods of AE Ursae Majoris: Is this a result of stellar evolution?
		The high-amplitude delta Scuti star AE Ursae Majoris is known to pulsate in two oscillation periods consistent with the fundamental radial mode (0.086017 d) and the first radial overtone (P=0.066528 d).
		Combining data taken over the last 25 years with new data obtained at the IAC 80 telescope at Observatorio del Teide, we find that the period of main oscillation in AE Ursae Majoris is slowly increasing.
	www.nbi.dk /dfs/abs2004/aa11.html (129 words)

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