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- Eta_Pegasi abstract "Eta Pegasi (η Peg) is a binary star in the constellation Pegasus. It has the traditional name Matar, which comes from the Arabic Al Saʽd al Maṭar (سعد المطر) meaning lucky star of rain. The apparent visual magnitude of this star is +2.95, making this the fifth brightest member of Pegasus. Based upon parallax measurements, the distance to this star is about 167 light-years (51 parsecs).This system consists of a pair of stars in a binary orbit with a period of 813 days and an eccentricity of 0.183. The primary component is a bright giant star with a stellar classification of G2 II and about four times the mass of the Sun. The interferometry-measured angular diameter of this star, after correcting for limb darkening, is 3.26 ± 0.07 mas, which, at its estimated distance, equates to a physical radius of nearly 18 times the radius of the Sun. It is radiating 247 times the luminosity of the Sun from its expanded outer envelope at an effective temperature of 5,450 K. The rotation rate of the star slowed as it expanded, so it has a projected rotational velocity of 1.7 km s−1 with an estimated rotation period of 818 days.The secondary component is an F-type main sequence star with a classification of F0 V. There are also 2 class G stars further away that may or may not be physically related to the main pair.".
- Eta_Pegasi thumbnail Pegasus_IAU.svg?width=300.
- Eta_Pegasi wikiPageID "3110196".
- Eta_Pegasi wikiPageLength "8478".
- Eta_Pegasi wikiPageOutDegree "37".
- Eta_Pegasi wikiPageRevisionID "655759493".
- Eta_Pegasi wikiPageWikiLink Angular_diameter.
- Eta_Pegasi wikiPageWikiLink Apparent_magnitude.
- Eta_Pegasi wikiPageWikiLink Arabic.
- Eta_Pegasi wikiPageWikiLink Binary_star.
- Eta_Pegasi wikiPageWikiLink Bright_giant.
- Eta_Pegasi wikiPageWikiLink Catalogues_of_Fundamental_Stars.
- Eta_Pegasi wikiPageWikiLink Category:Bayer_objects.
- Eta_Pegasi wikiPageWikiLink Category:Flamsteed_objects.
- Eta_Pegasi wikiPageWikiLink Category:Pegasus_(constellation).
- Eta_Pegasi wikiPageWikiLink Category:Stars_with_proper_names.
- Eta_Pegasi wikiPageWikiLink Constellation.
- Eta_Pegasi wikiPageWikiLink Crater-class_cargo_ship.
- Eta_Pegasi wikiPageWikiLink Effective_temperature.
- Eta_Pegasi wikiPageWikiLink Epoch_(astronomy).
- Eta_Pegasi wikiPageWikiLink F-type_main-sequence_star.
- Eta_Pegasi wikiPageWikiLink Heliocentric_Julian_Day.
- Eta_Pegasi wikiPageWikiLink Henry_Draper_Catalogue.
- Eta_Pegasi wikiPageWikiLink Hipparcos.
- Eta_Pegasi wikiPageWikiLink Interferometry.
- Eta_Pegasi wikiPageWikiLink Limb_darkening.
- Eta_Pegasi wikiPageWikiLink List_of_stars_in_Pegasus.
- Eta_Pegasi wikiPageWikiLink Minute_and_second_of_arc.
- Eta_Pegasi wikiPageWikiLink Orbital_eccentricity.
- Eta_Pegasi wikiPageWikiLink Orbital_period.
- Eta_Pegasi wikiPageWikiLink Parallax.
- Eta_Pegasi wikiPageWikiLink Pegasus_(constellation).
- Eta_Pegasi wikiPageWikiLink Solar_radius.
- Eta_Pegasi wikiPageWikiLink Star_catalogue.
- Eta_Pegasi wikiPageWikiLink Stellar_atmosphere.
- Eta_Pegasi wikiPageWikiLink Stellar_classification.
- Eta_Pegasi wikiPageWikiLink Stellar_rotation.
- Eta_Pegasi wikiPageWikiLink USS_Matar_(AK-119).
- Eta_Pegasi wikiPageWikiLink United_States_Navy.
- Eta_Pegasi wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Eta_Pegasi wikiPageWikiLink File:Pegasus_IAU.svg.
- Eta_Pegasi wikiPageWikiLinkText "Eta Pegasi".
- Eta_Pegasi wikiPageWikiLinkText "Eta".
- Eta_Pegasi wikiPageWikiLinkText "Matar".
- Eta_Pegasi wikiPageWikiLinkText "η Peg".
- Eta_Pegasi absmagV "–1.18".
- Eta_Pegasi appmagV "+2.95".
- Eta_Pegasi bV "+0.86".
- Eta_Pegasi class "G2 II + F0 V".
- Eta_Pegasi component "η Peg A".
- Eta_Pegasi constell Pegasus_(constellation).
- Eta_Pegasi eccentricity "0.183".
- Eta_Pegasi epoch Epoch_(astronomy).
- Eta_Pegasi gravity "2.4".
- Eta_Pegasi k "14.37".
- Eta_Pegasi luminosity "247".
- Eta_Pegasi mass "3.82".
- Eta_Pegasi metalFe "+0.39".
- Eta_Pegasi pError "0.18".
- Eta_Pegasi parallax "19.51".
- Eta_Pegasi periarg "344.7".
- Eta_Pegasi periastron "2452025".
- Eta_Pegasi periodUnitless "7.02432E7".
- Eta_Pegasi propMoDec "+15.46".
- Eta_Pegasi propMoRa "–100.06".
- Eta_Pegasi radialV "+4.3".
- Eta_Pegasi radius "18".
- Eta_Pegasi rotation "818".
- Eta_Pegasi rotationalVelocity "1.4".
- Eta_Pegasi temperature "5450".
- Eta_Pegasi uB "+0.57".
- Eta_Pegasi wikiPageUsesTemplate Template:Convert.
- Eta_Pegasi wikiPageUsesTemplate Template:DEC.
- Eta_Pegasi wikiPageUsesTemplate Template:RA.
- Eta_Pegasi wikiPageUsesTemplate Template:Reflist.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_astrometry.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_begin.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_catalog.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_character.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_detail.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_end.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_image.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_observe.
- Eta_Pegasi wikiPageUsesTemplate Template:Starbox_orbit.
- Eta_Pegasi wikiPageUsesTemplate Template:Stars_of_Pegasus.
- Eta_Pegasi subject Category:Bayer_objects.
- Eta_Pegasi subject Category:Flamsteed_objects.
- Eta_Pegasi subject Category:Pegasus_(constellation).
- Eta_Pegasi subject Category:Stars_with_proper_names.
- Eta_Pegasi hypernym Star.
- Eta_Pegasi type CelestialBody.
- Eta_Pegasi type Place.
- Eta_Pegasi type Star.
- Eta_Pegasi type Catalogue.
- Eta_Pegasi type Location.
- Eta_Pegasi type Place.
- Eta_Pegasi type Thing.
- Eta_Pegasi comment "Eta Pegasi (η Peg) is a binary star in the constellation Pegasus. It has the traditional name Matar, which comes from the Arabic Al Saʽd al Maṭar (سعد المطر) meaning lucky star of rain. The apparent visual magnitude of this star is +2.95, making this the fifth brightest member of Pegasus.".
- Eta_Pegasi label "Eta Pegasi".
- Eta_Pegasi sameAs Q1417104.