HD 187642

URI: https://gptkb.org/entity/HD_187642
GPTKB entity
Statements (31)
Predicate Object
gptkbp:instanceOf gptkb:star
gptkbp:age 1.2 billion years
gptkbp:alternativeName gptkb:Altair
gptkbp:apparentMagnitude 0.77
gptkbp:BayerDesignation gptkb:Alpha_Aquilae
gptkbp:catalogue gptkb:Henry_Draper_Catalogue
gptkbp:constellation gptkb:Aquila
gptkbp:declination +08° 52′ 06″
gptkbp:diameter 1.63 solar radii
gptkbp:discoveredBy ancient astronomers
gptkbp:distanceFromEarth 16.7 light years
gptkbp:FlamsteedDesignation gptkb:53_Aquilae
gptkbp:hasExoplanet no
https://www.w3.org/2000/01/rdf-schema#label HD 187642
gptkbp:luminosity 10.6 times solar
gptkbp:mass 1.79 solar masses
gptkbp:metallicity −0.2 [Fe/H]
gptkbp:notableFor one of the closest bright stars to Earth
gptkbp:parallax 194.95 mas
gptkbp:partOf gptkb:Summer_Triangle
gptkbp:rightAscension 19h 50m 47s
gptkbp:rotationPeriod 286 km/s
gptkbp:spectralType gptkb:A7V
gptkbp:temperature 7550 K
gptkbp:variableType gptkb:Delta_Scuti_variable
gptkbp:visibleToNakedEye yes
gptkbp:bfsParent gptkb:Nunki
gptkb:Altair
gptkb:Altair_(star)
gptkb:牛郎星
gptkbp:bfsLayer 6