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- Alpha_Sagittarii abstract "Alpha Sagittarii (Alpha Sgr, α Sagittarii, α Sgr) is a star in the Sagittarius constellation. It has the traditional names Alrami and Rukbat.Alpha Sagittarii is a blue, class B dwarf star. It does not appear particularly bright in the sky to the naked eye, with a visual apparent magnitude of +3.97. However, this is due to its distance; in reality, the star is twice as hot as the Sun and considerably more massive, with a luminosity in visible wavelengths about 40 times greater than that of the Sun. Based on an excess emission of infrared radiation, it may have a debris disk, much like Vega. It is unclear why Bayer designated this star as the alpha, rather than ε Sgr or σ Sgr. This led some old star charts to occasionally depict Alpha and Beta Sgr as much brighter than they are in reality, as they are invisible from northern Europe, being too far south to see there.This is a single-lined spectroscopic binary system. The ROSAT All Sky Survey discovered that Alpha Sagittarii is emitting an excess flux of X-rays, which is not expected to originate from a star of this spectral class. The most likely explanation is that the companion is an active pre-main sequence star or else a star that has just reached the main sequence.".
- Alpha_Sagittarii thumbnail Sagittarius_IAU.svg?width=300.
- Alpha_Sagittarii wikiPageID "2009449".
- Alpha_Sagittarii wikiPageRevisionID "593614424".
- Alpha_Sagittarii appmagV "+3.97".
- Alpha_Sagittarii bV "−0.10".
- Alpha_Sagittarii class "B8 V".
- Alpha_Sagittarii constell Sagittarius_(constellation).
- Alpha_Sagittarii epoch "J2000".
- Alpha_Sagittarii hasPhotoCollection Alpha_Sagittarii.
- Alpha_Sagittarii luminosity "60".
- Alpha_Sagittarii metalFe "-0.02".
- Alpha_Sagittarii pError "0.22".
- Alpha_Sagittarii parallax "17.94".
- Alpha_Sagittarii propMoDec "−119.21".
- Alpha_Sagittarii propMoRa "+30.49".
- Alpha_Sagittarii radialV "−0.7".
- Alpha_Sagittarii radius "2.49".
- Alpha_Sagittarii uB "−0.33".
- Alpha_Sagittarii subject Category:B-type_main-sequence_stars.
- Alpha_Sagittarii subject Category:Bayer_objects.
- Alpha_Sagittarii subject Category:Sagittarius_(constellation).
- Alpha_Sagittarii subject Category:Stars_with_proper_names.
- Alpha_Sagittarii type B-typeMainSequenceStars.
- Alpha_Sagittarii type BayerObjects.
- Alpha_Sagittarii type CelestialBody109239740.
- Alpha_Sagittarii type NaturalObject100019128.
- Alpha_Sagittarii type Object100002684.
- Alpha_Sagittarii type PhysicalEntity100001930.
- Alpha_Sagittarii type Star109444100.
- Alpha_Sagittarii type StarsWithProperNames.
- Alpha_Sagittarii type Whole100003553.
- Alpha_Sagittarii type CelestialBody.
- Alpha_Sagittarii type Star.
- Alpha_Sagittarii type PhysicalBody.
- Alpha_Sagittarii comment "Alpha Sagittarii (Alpha Sgr, α Sagittarii, α Sgr) is a star in the Sagittarius constellation. It has the traditional names Alrami and Rukbat.Alpha Sagittarii is a blue, class B dwarf star. It does not appear particularly bright in the sky to the naked eye, with a visual apparent magnitude of +3.97.".
- Alpha_Sagittarii label "Alfa Sagittarii".
- Alpha_Sagittarii label "Alpha Sagittarii".
- Alpha_Sagittarii label "Alpha Sagittarii".
- Alpha_Sagittarii label "Alpha Sagittarii".
- Alpha_Sagittarii label "Alpha Sagittarii".
- Alpha_Sagittarii label "Rukbat".
- Alpha_Sagittarii label "Rukbat".
- Alpha_Sagittarii label "Rukbat".
- Alpha_Sagittarii label "ركبة الرامي".
- Alpha_Sagittarii label "天淵三".
- Alpha_Sagittarii sameAs Alpha_Sagittarii.
- Alpha_Sagittarii sameAs Rukbat.
- Alpha_Sagittarii sameAs Alpha_Sagittarii.
- Alpha_Sagittarii sameAs Alpha_Sagittarii.
- Alpha_Sagittarii sameAs Rukbat.
- Alpha_Sagittarii sameAs Rukbat.
- Alpha_Sagittarii sameAs Alfa_Sagittarii.
- Alpha_Sagittarii sameAs Alpha_Sagittarii.
- Alpha_Sagittarii sameAs m.06drsz.
- Alpha_Sagittarii sameAs Q911232.
- Alpha_Sagittarii sameAs Q911232.
- Alpha_Sagittarii sameAs Alpha_Sagittarii.
- Alpha_Sagittarii wasDerivedFrom Alpha_Sagittarii?oldid=593614424.
- Alpha_Sagittarii depiction Sagittarius_IAU.svg.
- Alpha_Sagittarii isPrimaryTopicOf Alpha_Sagittarii.
- Alpha_Sagittarii name "Alpha Sagittarii".
