With a relatively constant light curve interrupted by eclipse-induced drops in magnitude, UX UMa was orginally thought to be an Algol-type eclipsing variable.UX UMa's earliest claim to fame was its ultra-short orbital period of 0.1967 days, or 4.7 hours! n. The binary star in the middle of the handle of the Big Dipper, in the constellation Ursa Major, approximately 78 light years from Earth. 81.11 light years from the Sun and it is All messages will be reviewed before being displayed. Coordinates: 13h 25m 13.5s, +54° 59′ 17″, "High-Precision Near-Infrared Photometry of a Large Sample of Bright Stars Visible from the Northern Hemisphere", "Bulletin of the IAU Working Group on Star Names, No. Alcor has the Flamsteed designation 80 Ursae Majoris. Alkor og Mizar (Zeta Ursae Majoris, Zeta UMa, ζ Ursae Majoris, ζ UMa) er to stjerner i Karlsvogna i stjernebiletet Den store bjørnen.Dei ligg tett inntil kvarandre, men eit skarpt auge kan skilje dei frå kvarandre. La dernière modification de cette page a été faite le 14 août 2020 à 00:13. If they are exactly the same distance from us (somewhat unlikely) then the distance between them is only 17800 AU (0.281 ly). However, it has yet to be demonstrated conclusively that they are gravitationally bound. (∼13,8 pc) [1] dans la constellation de la Grande Ourse.Depuis 2002, on a découvert qu'elle possédait trois exoplanètes.Chalawan est 72 e dans le top 100 des étoiles cibles du programme Terrestrial Planet Finder de la NASA [4 A white main-sequence dwarf that is one of the brighter stars of the Plough. C'est la compagne de Mizar (ζ UMa) ; les deux étoiles forment une paire séparable à l’œil nu située dans la poignée de l'astérisme de la Grande Casserole. It is the fainter companion of Mizar, the two stars forming a naked eye double in the handle of the Big Dipper (or Plough) asterism in the constellation of Ursa Major. In the Mi'kmaq myth of the great bear and the seven hunters,[18] Mizar is Chickadee and Alcor is his cooking pot. Alcor was originally Arabic سها‎ Suhā/Sohā, meaning either the ‘forgotten’ or ‘neglected’ one; notable as a faintly perceptible companion of Mizar. Localisation dans la constellation : Grande Ourse, Alcor, g UMa, 80 UMa (Flamsteed), HR 5062, HD 116842, BD+55 1603, SAO 28751 HIP 65477, GJ 3785, CCDM J13240 +5456D, WDS J13239 +5456 Ca,Cb[1]. Also known as Eta Ursae Majoris, at a distance of around 80 light years from Earth Alioth is the brightest star in the constellation, it has surface temperatures twice … At the bend of the Big Dipper's handle is the striking pair of Zeta and 80 Ursae Majoris, or Mizar and Alcor. C'est la compagne de Mizar (ζ UMa) ; les deux étoiles forment une paire séparable à l’œil nu située dans la poignée de l'astérisme de la Grande Casserole. Revenir à la page « 80 Ursae Majoris ». [10], In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[11] to catalog and standardize proper names for stars. ζ Ursae Majoris, Mizar, the second star in from the end of the handle of the Big Dipper, and the constellation's fourth-brightest star. 80 Ursae Majoris. Alcor et Mizar sont distantes de 11,48 minute d'arc soit environ un tiers du diamètre apparent de la pleine Lune. unknown, possibly transliterated Arabic word : Ursa Major: Alcyone: Eta Tauri: Greek: a Pleaide, a daughter of Atlas and Pleione : Taurus: Aldebaran ... Epsilon Ursae Majoris. Mizar, which means "girdle," forms a famous double star, with its optical companion Alcor (80 Ursae Majoris), the two of which were termed the "horse and rider" by the Arabs. Alcor has the Flamsteed designation 80 Ursae Majoris. Alcor makes a visual double with the brighter star Mizar in the middle of the handle of the Big Dipper ().The two are 1.2 light-years apart and may be gravitationally bound to each other. Größe im Sternbild Großer Bär.Er besitzt eine scheinbare Helligkeit von 4,0 m und liegt etwa 82 Lichtjahre von der Sonne entfernt. Alcor, également désignée 80 Ursae Majoris dans la désignation de Flamsteed (et abrégé en 80 UMa), est une étoile binaire de la constellation de la Grande Ourse. Jump to: General, Art, Business, Computing, Medicine, Miscellaneous, Religion, Science, Slang, Sports, Tech, Phrases We found one dictionary with English definitions that includes the word 80 ursae majoris: Click on the first link on a line below to go directly to a page where "80 ursae majoris" is defined. Both are blue main sequence dwarf stars that are loosely bound to one another, despite being … In traditional Indian astronomy,[16] Alcor was known as Arundhati, wife of one of the Saptarishi. Arabic: … Page géné La plus ancienne notification de cette étoile vient de l'astronome persan Abd Al-Rahman Al Soufi dans son Livre des étoiles fixes établi en 964 à partir du catalogue de Ptolémée : Il est singulier que les anciens n'en aient pas dit un seul mot alors qu'elle est assez facilement visible à l'œil nu dans un ciel pur[3]. The WGSN's first bulletin of July 2016[12] included a table of the first two batches of names approved by the WGSN; which included Alcor for 80 UMa.[13]. Find out information about 80 Ursae Majoris. Megrez, Delta Ursae Majoris (δ UMa), is the faintest of the seven stars that form the Big Dipper asterism.It is a third magnitude star with an apparent magnitude of 3.312, located at a distance of 80.5 light years from Earth. At the bend of the Big Dipper's handle is the striking pair of Zeta and 80 Ursae Majoris, or Mizar and Alcor. Digitized Sky Survey image of Alcor. [14], Alcor B was discovered independently by two groups. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). Définitions de 80 Ursae Majoris, synonymes, antonymes, dérivés de 80 Ursae Majoris, dictionnaire analogique de 80 Ursae Majoris (français) Voir plus » Pays de Caux. It appears as الخوّار‎ al-Khawwar, 'the Faint One', [17]. The image below is a photograph of Alcor from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. UX Ursae Majoris was first discovered to be variable in 1933 by S. Beljawsky during his investigation of Simeiz Observatory plates. In the myth, seven hunters (birds) are hunting the bear. Alcor /ˈælkɔːr/[9] is a binary star system in the constellation of Ursa Major. Explanation of 80 Ursae Majoris Alkor (Alcor, Saidak) je zvezda v bližini Mizarja.Imenujemo jo tudi Jahač in 80 Velikega medveda (80 UMa, 80 Ursae Majoris).. Ima navidezni sij 4,02 m in sodi v spektralni razred A5 V. Spada me najbolj znane navidezne dvojne zvezde, čeprav še ni natančno znano ali res ne … 47 Ursae Majoris (en abrégé 47 UMa) ou Chalawan est une naine jaune très similaire (type spectral G1V) au Soleil et située à ∼45 a.l. 1", "Two Big Dipper constellation stars actually six", https://en.wikipedia.org/w/index.php?title=Alcor_(star)&oldid=1006139076, Creative Commons Attribution-ShareAlike License, This page was last edited on 11 February 2021, at 07:51. [4] Its spectral type is M3-4 and it is a main sequence star, a red dwarf. Alcor, également désignée 80 Ursae Majoris dans la désignation de Flamsteed (et abrégé en 80 UMa), est une étoile binaire de la constellation de la Grande Ourse. Another led by Neil Zimmerman, a graduate student at Columbia University and member of Project 1640, an international collaborative team that includes astrophysicists at the American Museum of Natural History, the University of Cambridge's Institute of Astronomy, the California Institute of Technology, and NASA's Jet Propulsion Laboratory, used the 5-meter Hale telescope at Palomar Observatory.[4]. Dernière modification le 14 août 2020, à 00:13. Define 80 Ursae Majoris. 47 Ursae Majoris (abbreviated 47 UMa), formally named Chalawan / ˈ tʃ ɑː l ə w ə n /, is a yellow dwarf star approximately 46 light-years from Earth in the constellation of Ursa Major.As of 2011, three extrasolar planets (designated 47 Ursae Majoris b, c and d; the first two later named Taphao Thong and Taphao Kaew) are believed to orbit the star. Mizar A / B en bas et Alcor en haut. Alcor, 80 Ursae Majoris, g Ursae Majoris, HD 116842, GC 18155, HIP 65477, SAO 28751, PPM 34021, HR 5062, BD+55 1603, WDS J13239+5456C, CCDM J13240+5456D, GSC 03850-01384, GJ 3785, TYC 3850-1384-1, Gaia DR2 1565090003969283968, 2MASS J13251353+5459165 Alcor est la clé du mystère du roman « La Comtesse de Cagliostro » de Maurice Leblanc, son nom étant déduit de la phrase « Ad Lapidem Currebat Olim Regina » (« Vers la pierre courait autrefois la Reine »). Articolul 80 Ursae Majoris este un subiect de care se ocupă Proiectul Astronomie, o inițiativă de a construi o listă cuprinzătoare și detaliată cu informații despre astronomie Dacă doriți să participați la acest proiect, vă rugăm să vă înscrieți aici. Le pays de Caux est une région naturelle de Normandie appartenant au Bassin parisien. nécessaire]. One group led by Eric Mamajek (University of Rochester) and colleagues at Steward Observatory University of Arizona used adaptive optics on the 6.5-meter telescope at MMT Observatory. [15] The Mizar-Alcor stellar sextuple system belongs to the Ursa Major Moving Group, a stellar group of stars of similar ages and velocities,[2] and the closest cluster-like object to Earth. The uncertainty is due to our uncertainty about the exact distances from us. Mizar and Alcor's proper motions show they move together, along with most of the other stars of the Big Dipper except Dubhe and Alkaid, as members of the Ursa Major Moving Group, a mostly dispersed group of stars sharing a common birth. 80 Ursae Majoris (80 UMa), mai cunoscută ca Alcor, este steaua companioană a stelei Mizar (ζ UMa) situată în constelația Ursa Mare.Cele două stele sunt separate de 11,48 minute de arc, adică vreo treime din diametrul aparent al Lunii pline.. Ea este vizibilă cu destulă ușurință, cu ochiul liber, în pofida slabei sale magnitudini aparente de +3,99. Query : 80 Ursae Majoris : C.D.S. 80 Ursae Majoris synonyms, 80 Ursae Majoris pronunciation, 80 Ursae Majoris translation, English dictionary definition of 80 Ursae Majoris. They are nearly as well-known as the Dipper itself. Learn definitions, uses, and phrases with ursae. With normal eyesight Alcor appears at about 12 minutes of arc from the second-magnitude star Mizar. Alcor, (from Arabic: “Faint One”) also called 80 Ursae Majoris, star with apparent magnitude of 4.01. C'est la compagne de Mizar (ζ UMa) ; les deux étoiles forment une paire séparable à l’œil nu située dans … Looking for 80 Ursae Majoris? Alcor B is one second of arc away from Alcor A. La dernière modification de cette page a été faite le 9 janvier 2021 à 21:06. Alcor was originally Arabic سها‎ Suhā/Sohā, meaning either the ‘forgotten’ or ‘neglected’ one; notable as a faintly perceptible companion of Mizar. [2], In 2009, Alcor was discovered to have a companion star Alcor B, a magnitude 8.8 red dwarf. Arabic: "the bull" Ursa Major: Alkaid (Benetnasch) Eta Ursae Majoris. Un article de Wikipédia, l'encyclopédie libre. In Arabic Al-Sahja was the rhythmical form of the usual Suhā/Sohā. g Ursae Majoris, 80 Ursae Majoris, BD+55 1603, CCDM J13240+5456D, GC 18155, HD 116842, HIP 65477, HR 5062, PPM 34021, SAO 28751, WDS J13239+5456C Unitățile SI și condiții de temperatură și presiune normale dacă nu s-a specificat altfel. They are nearly as well-known as the Dipper itself. Treshchov Gateway (Surface port) 2. The two both lie about 83 light-years away from the Sun, as measured by the Hipparcos astrometry satellite. Une tradition non vérifiée voudrait qu'elle ait servi à tester l'acuité visuelle des archers de Charles Quint et de Gengis Khan. The two stars have been known since ancient times. - SIMBAD4 rel 1.7 - 2021.01.11CET05:48:02 Available data : Basic data • Identifiers • Plot & images • Bibliography • Measurements • External archives • … USS Alcor (AD-34) and USS Alcor (AK-259) are both United States Navy ships. Arabarane nytta desse stjernene som ein prøve på godt syn. Alcor est facilement visible à l'œil nu avec sa magnitude apparente de +3,99. Le contenu est disponible sous licence CC BY-SA 3.0 sauf mention contraire. Primary / Proper / Traditional Name: Alcor: Alternative Names: G Uma, G Ursae Majoris, G UMa, HD 116842, HIP 65477, HR 5062, TYC 3850-1384-1, 80 Ursae Majoris, 80 Uma, BD+55 1603, NSV 06238 [1] Dicho título puede tener el mismo origen que el de Alioth (ε Ursae Majoris). Alcor et Mizar sont distantes de 11,48 minute d'arc[2] soit environ un tiers du diamètre apparent de la pleine Lune. Alcor is of magnitude 3.99 and spectral class A5V. Alkor (Bayer-Bezeichnung: g Ursae Majoris, kurz: g UMa), umgangssprachlich das „Reiterlein“ (in Südwestdeutschland auch „Deichselreiter“) ist ein Stern 4. Recent studies indicate that Alcor and Mizar are somewhat closer together than previously thought: approximately 74,000 ± 39,000 AU or 0.5–1.5 light years. Alcor - 80 Ursae Majoris is circumpolar and transits at 03:59 UTC (altitude: 86.5°). Ursae is contained in 9 matches in Merriam-Webster Dictionary. Alcor, également désignée 80 Ursae Majoris dans la désignation de Flamsteed (et abrégé en 80 UMa), est une étoile binaire de la constellation de la Grande Ourse. Alcor A and B are situated 1.2 light years away from, and are co-moving with, the Mizar quadruple system, making the system the second known stellar sextuplet—only Castor is closer. Son nom viendrait de l’arabe al-qur, « le cavalier » du fait qu'elle semble chevaucher un des chevaux du chariot de la Grande Ourse. D’Al Suha est né le prénom Sohan qui est une référence à l’étoile Mizar[réf. Centre de données astronomiques de Strasbourg, https://fr.wikipedia.org/w/index.php?title=80_Ursae_Majoris&oldid=178609389, Article contenant un appel à traduction en anglais, Portail:Sciences de la Terre et de l'Univers/Articles liés, licence Creative Commons attribution, partage dans les mêmes conditions, comment citer les auteurs et mentionner la licence. Mizar (Zeta Ursae Majoris) and Alcor (80 Ursae Majoris) form a true binary that can be seen without optical aid as a stellar pair in the handle of the Big Dipper asterism of Ursa Major. Alcor es el nombre de la estrella 80 Ursae Majoris (80 UMa / g Ursae Majoris / HD 116842) en la constelación de la Osa Mayor. : Început: Acest articol a fost evaluat ca făcând parte din grupa Început pe scala de calitate. Alcor itself is orbited by a faint red companion star. En effet, l'emplacement de certaines abbayes du pays de Caux est censé reproduire au sol le tracé de la Grande Ourse, et Alcor indiquerait le lieu où serait enfoui un hypothétique trésor des rois de France.