About: Westerlund 1-75

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Westerlund 1-75 or Wd 1-75 is a red supergiant (RSG) located in the Westerlund 1 super star cluster. Its radius is calculated to be around 668 solar radii (4.65 × 108 km, 3.10 au). This corresponds to a volume 298 million times bigger than the Sun. If placed at the center of the Solar System, Westerlund 1-75 would engulf the inner limits of the asteroid belt. Like Westerlund 1-20, Westerlund 1-26 and Westerlund 1-237, Westerlund 1-75 was observed to be a radio source, however it is weakest along the RSGs in its cluster and remains unresolved at any wavelength.

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body star
rdfs:label	Westerlund 1-75 (de) Westerlund 1-75 (en)
rdfs:comment	Westerlund 1-75 ist ein Roter Überriese im Sternbild Altar. Er ist Teil des offenen Sternhaufens Westerlund 1, in dem noch drei weitere rote Überriesen, Westerlund 1-20, Westerlund 1-26 und Westerlund 1-237 bekannt sind. (de) Westerlund 1-75 or Wd 1-75 is a red supergiant (RSG) located in the Westerlund 1 super star cluster. Its radius is calculated to be around 668 solar radii (4.65 × 108 km, 3.10 au). This corresponds to a volume 298 million times bigger than the Sun. If placed at the center of the Solar System, Westerlund 1-75 would engulf the inner limits of the asteroid belt. Like Westerlund 1-20, Westerlund 1-26 and Westerlund 1-237, Westerlund 1-75 was observed to be a radio source, however it is weakest along the RSGs in its cluster and remains unresolved at any wavelength. (en)
foaf:name	Westerlund 1-75 (en)
foaf:depiction
dcterms:subject	M-type supergiants 2MASS objects Ara (constellation)
Wikipage page ID	64101856 (xsd:integer)
Wikipage revision ID	1119376212 (xsd:integer)
Link from a Wikipage to another Wikipage	Infrared M-type supergiants Ara (constellation) Luminosity Solar radius Westerlund 1 Westerlund 1-20 Westerlund 1-237 Westerlund 1-26 2MASS 2MASS objects Ara (constellation) Solar luminosity Asteroid belt Astronomical unit Kilometre Sun Supergiant star Hertzsprung–Russell diagram Red supergiant Solar System Red supergiant star Stefan–Boltzmann law Super star cluster
sameAs	Westerlund 1-75 Westerlund 1-75 Westerlund 1-75
dbp:wikiPageUsesTemplate	dbt:Stars_of_Ara dbt:Efn dbt:Notelist dbt:Reflist dbt:Short_description dbt:Sky dbt:Solar_radius dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_image dbt:Starbox_observe dbt:Starbox_reference dbt:Val dbt:DEC dbt:Location_mark dbt:RA
thumbnail	wiki-commons:Special:FilePath/Surprise_Cloud_Around_Vast_Star.jpg?width=300
appmag	3.280000 (xsd:double) 4.673000 (xsd:double) 6.933000 (xsd:double)
appmag 2 passband	J (en)
appmag 3 passband	H (en)
appmag 4 passband	K (en)
appmag v	16.700000 (xsd:double)
caption	Westerlund 1 super star cluster. The location of Wd 1-75 is circled. (en)
class	M1 - M4Ia (en)
constell	Ara (constellation)
epoch	J2000 (en)
equinox	J2000 (en)
p error	0.147700 (xsd:double)
parallax	0.089300 (xsd:double)
prop mo dec	−4.248 (en)
prop mo ra	−2.029 (en)
temperature	3600 (xsd:integer)
type	Red supergiant star
has abstract	Westerlund 1-75 ist ein Roter Überriese im Sternbild Altar. Er ist Teil des offenen Sternhaufens Westerlund 1, in dem noch drei weitere rote Überriesen, Westerlund 1-20, Westerlund 1-26 und Westerlund 1-237 bekannt sind. (de) Westerlund 1-75 or Wd 1-75 is a red supergiant (RSG) located in the Westerlund 1 super star cluster. Its radius is calculated to be around 668 solar radii (4.65 × 108 km, 3.10 au). This corresponds to a volume 298 million times bigger than the Sun. If placed at the center of the Solar System, Westerlund 1-75 would engulf the inner limits of the asteroid belt. The star is classified as a luminous cool supergiant emitting most of its energy in the infrared spectrum. It occupies the upper right corner of the Hertzsprung-Russell diagram. Using the effective temperature of 3,600 K, the bolometric luminosity of 68,000 L☉ and the solar effective temperature of 5,772 K, the radius of Westerlund 1-75 can be calculated using the Stefan-Boltzmann law at 668 R☉. Like Westerlund 1-20, Westerlund 1-26 and Westerlund 1-237, Westerlund 1-75 was observed to be a radio source, however it is weakest along the RSGs in its cluster and remains unresolved at any wavelength. Westerlund 1-75 is surrounded by extended nebula, although it appears less massive than nebulae around typical red supergiant stars. (en)
credit	ESO (en)
prov:wasDerivedFrom	wikipedia-en:Westerlund_1-75?oldid=1119376212&ns=0
page length (characters) of wiki page	7337 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Westerlund_1-75
is Link from a Wikipage to another Wikipage of	List of largest known stars Westerlund 1 Westerlund 1-20 Westerlund 1-237 Westerlund 1-26
is foaf:primaryTopic of	wikipedia-en:Westerlund_1-75

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