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gptkbp:instanceOf
|
gptkb:star
|
|
gptkbp:age
|
1.2 billion years
|
|
gptkbp:apparentMagnitude
|
0.77
|
|
gptkbp:arabicName
|
النسر الطائر (al-Nasr al-Ṭāʼir)
|
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gptkbp:BayerDesignation
|
gptkb:Alpha_Aquilae
|
|
gptkbp:cataloguedIn
|
gptkb:Gliese_768
gptkb:BD+08_4236
gptkb:HD_187642
gptkb:HIP_97649
gptkb:HR_7557
gptkb:SAO_125122
|
|
gptkbp:culturalSignificance
|
featured in East Asian folklore
part of the Chilseok Festival in Korea
part of the Double Seventh Festival in China
part of the Qixi Festival legend
part of the Tanabata Festival in Japan
represents the cowherd in the Weaver Girl and Cowherd story
|
|
gptkbp:declination
|
+08° 52′ 06″
|
|
gptkbp:distanceFromEarth
|
16.7 light years
|
|
gptkbp:FlamsteedDesignation
|
gptkb:53_Aquilae
|
|
gptkbp:hasChineseName
|
牛郎星 (Niú Láng Xīng)
|
|
gptkbp:hasCompanion
|
none known
|
|
gptkbp:hasEffectiveTemperature
|
7,700 K
|
|
gptkbp:hasEquatorialRadius
|
1.8 solar radii
|
|
gptkbp:hasInfraredExcess
|
none detected
|
|
gptkbp:hasNoKnownPlanets
|
true
|
|
gptkbp:hasOblateness
|
significant
|
|
gptkbp:hasRotationalVelocity
|
286 km/s
|
|
gptkbp:hasViewOf
|
gptkb:Northern_Hemisphere
|
|
gptkbp:hasXRayEmission
|
detected
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Altair star system
|
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gptkbp:IAUApprovedName
|
gptkb:Altair
|
|
gptkbp:JapaneseName
|
彦星 (Hikoboshi)
|
|
gptkbp:locatedIn
|
gptkb:Aquila_constellation
|
|
gptkbp:luminosity
|
10.6 times solar luminosity
|
|
gptkbp:mass
|
1.8 solar masses
|
|
gptkbp:metallicity
|
[Fe/H] = -0.2
|
|
gptkbp:notableFor
|
rapid rotation
one of the closest stars visible to the naked eye
|
|
gptkbp:parallax
|
194.95 mas
|
|
gptkbp:partOf
|
gptkb:Milky_Way_Galaxy
Summer Triangle asterism
|
|
gptkbp:properMotionRA
|
high
|
|
gptkbp:radialVelocity
|
-26.1 km/s
|
|
gptkbp:rightAscension
|
19h 50m 47s
|
|
gptkbp:spectralType
|
gptkb:A7V
|
|
gptkbp:star
|
gptkb:Altair
gptkb:Alpha_Aquilae
|
|
gptkbp:variableType
|
Delta Scuti variable (suspected)
|
|
gptkbp:英文名
|
Αετός (Aetós)
|
|
gptkbp:bfsParent
|
gptkb:planet_Altair_IV
gptkb:Altair_IV
|
|
gptkbp:bfsLayer
|
7
|