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Statements

Subject Item
dbr:HD_204521
rdf:type
yago:NaturalObject100019128 yago:WikicatDurchmusterungObjects yago:WikicatHipparcosObjects owl:Thing yago:WikicatHenryDraperCatalogueObjects dbo:Star yago:PhysicalEntity100001930 dbo:Location yago:Whole100003553 yago:CelestialBody109239740 dbo:Place yago:Object100002684 dbo:CelestialBody schema:Place yago:WikicatG-typeStars yago:Star109444100
rdfs:label
HD 204521 HD 204521
rdfs:comment
HD 240521 är en ensam stjärna, belägen i den mellersta delen av stjärnbilden Cepheus. Den har en skenbar magnitud av ca 7,26 och kräver åtminstone en stark handkikare eller ett mindre teleskop för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 37,9 mas, beräknas den befinna sig på ett avstånd på ca 86 ljusår (ca 26,4 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -77 km/s och förutspås komma inom 7,96 ljusår om 334 000 år. På det avståndet kan stjärnan ha en relativt liten men dock störande effekt på kometer i Oort-molnet. HD 204521 is a star in the northern constellation of Cepheus. In the sky it positioned just to the west of the magnitude 3.2 star Beta Cephei (β Cep). This object has a yellow hue similar to the Sun but is too faint to be visible to the naked eye with an apparent visual magnitude of 7.26. It is located at a distance of 86 light years from the Sun based on parallax, and has an absolute magnitude of 5.15. The star is drifting closer with a radial velocity of −77 km/s, and is predicted to come to within 7.96 light-years in 334,000 years. At that distance the star can have a relatively small perturbing effect on comets in the Oort cloud.
foaf:depiction
n18:Red_circle.svg n18:Cepheus_IAU.svg
dcterms:subject
dbc:Hipparcos_objects dbc:G-type_main-sequence_stars dbc:Gliese_and_GJ_objects dbc:Henry_Draper_Catalogue_objects dbc:Durchmusterung_objects dbc:Cepheus_(constellation)
dbo:wikiPageID
26658835
dbo:wikiPageRevisionID
1117510994
dbo:wikiPageWikiLink
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owl:sameAs
dbpedia-he:HD_204521 n12:3GJKE dbpedia-fa:ابرخس_۱۰۵۷۶۶ wikidata:Q3540357 dbpedia-sv:HD_204521 yago-res:HD_204521 freebase:m.0bh9wcd
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dbt:Short_description dbt:Val dbt:Stars_of_Cepheus dbt:RA dbt:Starbox_reference dbt:Reflist dbt:Location_mark dbt:DEC dbt:Starbox_image dbt:Starbox_observe dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_character dbt:Starbox_begin dbt:Starbox_catalog dbt:Odlist dbt:Starbox_astrometry dbt:Convert
dbo:thumbnail
n18:Cepheus_IAU.svg?width=300
dbp:absmagV
5.15
dbp:appmagV
7.26
dbp:class
G0V
dbp:constell
dbr:Cepheus_(constellation)
dbp:epoch
J2000
dbp:luminosity
0.86
dbp:mass
or 0.997
dbp:pError
0.0279
dbp:parallax
37.9131
dbp:propMoDec
+39.564
dbp:propMoRa
+40.601
dbo:abstract
HD 204521 is a star in the northern constellation of Cepheus. In the sky it positioned just to the west of the magnitude 3.2 star Beta Cephei (β Cep). This object has a yellow hue similar to the Sun but is too faint to be visible to the naked eye with an apparent visual magnitude of 7.26. It is located at a distance of 86 light years from the Sun based on parallax, and has an absolute magnitude of 5.15. The star is drifting closer with a radial velocity of −77 km/s, and is predicted to come to within 7.96 light-years in 334,000 years. At that distance the star can have a relatively small perturbing effect on comets in the Oort cloud. This is an ordinary G-type main-sequence star with a stellar classification of G0V, indicating that it is generating energy through core hydrogen fusion. It is roughly 8 billion years old and appears metal-deficient. The mass of this star appears to be at or below that of the Sun, and it is radiating 86% of the Sun's luminosity from its photosphere at an effective temperature of 5,699 K. HD 240521 är en ensam stjärna, belägen i den mellersta delen av stjärnbilden Cepheus. Den har en skenbar magnitud av ca 7,26 och kräver åtminstone en stark handkikare eller ett mindre teleskop för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 37,9 mas, beräknas den befinna sig på ett avstånd på ca 86 ljusår (ca 26,4 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -77 km/s och förutspås komma inom 7,96 ljusår om 334 000 år. På det avståndet kan stjärnan ha en relativt liten men dock störande effekt på kometer i Oort-molnet.
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dbr:Star
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dbr:HD_204521