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- Sigma_Andromedae abstract "Sigma Andromedae (σ And, σ Andromedae) is the Bayer designation for a star in the northern constellation of Andromeda. It has an apparent visual magnitude of +4.5, which is bright enough to be seen with the naked eye from most locations. Parallax measurements made during the Hipparcos mission place it at a distance of about 135 light-years (41 parsecs). The magnitude of the star is diminished by 0.08 from extinction caused by intervening gas and dust.This star has a stellar classification of A2 V, which matches the spectrum of an A-type main sequence star. It is about 450 million years old and is spinning rapidly with a projected rotational velocity of 123 km/s. The interferometry-measured angular diameter of this star is 0.465 mas, which, at its estimated distance, equates to a physical radius of about 2.1 times the radius of the Sun. It is radiating 26 times the luminosity of the Sun from its outer atmosphere at a temperature of 8,929 K, giving it the white-hued glow of an A-type star.In the past, radial velocity variations have been reported, but this remains unconfirmed. The star does not show any significant photometric variations and is used as a ubvy standard star. Sigma Andromedae is a candidate for membership in the stream of stars associated with the Ursa Major Moving Group. This is a set of stars that share a common motion through space, which suggests they originated together.".
- Sigma_Andromedae thumbnail Andromeda_IAU.svg?width=300.
- Sigma_Andromedae wikiPageID "2781073".
- Sigma_Andromedae wikiPageRevisionID "593048604".
- Sigma_Andromedae absmagV "1.33".
- Sigma_Andromedae ageMyr "450".
- Sigma_Andromedae appmagV "+4.51".
- Sigma_Andromedae bV "+0.05".
- Sigma_Andromedae class "A2 V".
- Sigma_Andromedae constell Andromeda_(constellation).
- Sigma_Andromedae epoch Epoch_(astronomy).
- Sigma_Andromedae gravity "4.02".
- Sigma_Andromedae hasPhotoCollection Sigma_Andromedae.
- Sigma_Andromedae luminosity "26".
- Sigma_Andromedae pError "0.21".
- Sigma_Andromedae parallax "24.2".
- Sigma_Andromedae propMoDec "-42".
- Sigma_Andromedae propMoRa "–65.67".
- Sigma_Andromedae radialV "–8.0".
- Sigma_Andromedae radius "2.1".
- Sigma_Andromedae rotationalVelocity "123".
- Sigma_Andromedae temperature "8929".
- Sigma_Andromedae uB "+0.07".
- Sigma_Andromedae subject Category:A-type_main-sequence_stars.
- Sigma_Andromedae subject Category:Andromeda_(constellation).
- Sigma_Andromedae subject Category:Bayer_objects.
- Sigma_Andromedae subject Category:Flamsteed_objects.
- Sigma_Andromedae type A-typeMainSequenceStars.
- Sigma_Andromedae type BayerObjects.
- Sigma_Andromedae type CelestialBody109239740.
- Sigma_Andromedae type FlamsteedObjects.
- Sigma_Andromedae type NaturalObject100019128.
- Sigma_Andromedae type Object100002684.
- Sigma_Andromedae type PhysicalEntity100001930.
- Sigma_Andromedae type Star109444100.
- Sigma_Andromedae type Whole100003553.
- Sigma_Andromedae type CelestialBody.
- Sigma_Andromedae type Star.
- Sigma_Andromedae type PhysicalBody.
- Sigma_Andromedae comment "Sigma Andromedae (σ And, σ Andromedae) is the Bayer designation for a star in the northern constellation of Andromeda. It has an apparent visual magnitude of +4.5, which is bright enough to be seen with the naked eye from most locations. Parallax measurements made during the Hipparcos mission place it at a distance of about 135 light-years (41 parsecs).".
- Sigma_Andromedae label "Sigma Andromedae".
- Sigma_Andromedae label "Sigma Andromedae".
- Sigma_Andromedae label "Sigma Andromedae".
- Sigma_Andromedae label "天廄三".
- Sigma_Andromedae sameAs Sigma_Andromedae.
- Sigma_Andromedae sameAs Sigma_Andromedae.
- Sigma_Andromedae sameAs 안드로메다자리_시그마.
- Sigma_Andromedae sameAs Sigma_Andromedae.
- Sigma_Andromedae sameAs m.0828mz.
- Sigma_Andromedae sameAs Q1207812.
- Sigma_Andromedae sameAs Q1207812.
- Sigma_Andromedae sameAs Sigma_Andromedae.
- Sigma_Andromedae wasDerivedFrom Sigma_Andromedae?oldid=593048604.
- Sigma_Andromedae depiction Andromeda_IAU.svg.
- Sigma_Andromedae isPrimaryTopicOf Sigma_Andromedae.
- Sigma_Andromedae name "Sigma Andromedae".