| dbo:abstract |
HD 30442 (HR 1527) is a solitary star in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye with an apparent magnitude of 5.47 and is estimated to be 403 light years away from the Solar System. The object has a heliocentric radial velocity of −37 km/s, indicating that it is drifting closer. HD 30442 has a stellar classification of M3 IIIab, indicating that it is a red giant. It is an asymptotic giant branch star currently generating energy using hydrogen and helium shells around a inert carbon core. It has 109% the mass of the Sun and has an enlarged radius of 70.8 R☉ due to its evolved state. It radiates at almost 1,100 times the luminosity of the Sun from its photosphere at an effective temperature of 3,500 K, giving a red hue. HD 30442 is estimated to have a solar metallicity, with an abundance of iron equivalent to that of the Sun. HD 30442 has a companion 120″ away along a position angle of 350°. It shares a common proper motion with HD 30442, suggesting physical relation, but its parallax indicates otherwise. (en) HD 30442 är en ensam stjärna i den mellersta delen av stjärnbilden Giraffen. Den har en skenbar magnitud av ca 5,41 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 6,5 mas, beräknas den befinna sig på ett avstånd på ca 500ljusår (ca 153 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -37 km/s. (sv) HD 30442，又名BD+63 543，SAO 13291、HR 1527，是一颗恒星，视星等为5.44，位于銀經146.25，銀緯12.16，其B1900.0坐标为赤經4h 42m 43.4s，赤緯+63° 12.16′ 5″。 (zh) |
| dbo:wikiPageExternalLink |
http://webviz.u-strasbg.fr/viz-bin/VizieR-S%3FCCDM%20J04521%2b6331A http://webviz.u-strasbg.fr/viz-bin/VizieR-S%3FHR%201527 http://aladin.u-strasbg.fr/AladinPreview%3F-c=04+52+05.2193%2B63+30+19.515&ident=HD++30442&submit=Aladin+previewer |
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| dbo:wikiPageWikiLink |
dbr:Camelopardalis dbr:Carbon dbr:Metallicity dbr:Hydrogen dbr:Stellar_classification dbr:Proper_motion dbc:Asymptotic-giant-branch_stars dbc:Bright_Star_Catalogue_objects dbc:Camelopardalis_(constellation) dbc:Durchmusterung_objects dbc:Henry_Draper_Catalogue_objects dbc:High-proper-motion_stars dbc:Hipparcos_objects dbc:M-type_giants dbr:Naked_eye dbr:Photosphere dbr:Effective_temperature dbr:Apparent_magnitude dbr:Light_year dbr:Star dbr:Henry_Draper_Catalogue dbr:Parallax dbr:Helium dbr:Stellar_core dbr:Radius dbr:Red_giant dbr:Asymptotic_giant_branch dbr:Iron dbr:Sun dbr:Position_angle dbr:Solar_System dbr:Circumpolar_constellation dbr:Radial_velocity dbr:Mass_of_the_Sun dbr:Luminosity_of_the_Sun |
| dbp:absmagV |
−0.44 (en) |
| dbp:appmagV |
5.470000 (xsd:double) |
| dbp:bV |
+1.55 (en) |
| dbp:class |
M3 IIIab (en) |
| dbp:constell |
dbr:Camelopardalis |
| dbp:epoch |
J2000 (en) |
| dbp:gravity |
0.920000 (xsd:double) |
| dbp:luminosity |
1096 (xsd:integer) |
| dbp:mass |
1.090000 (xsd:double) |
| dbp:metalFe |
0 (xsd:integer) |
| dbp:pError |
0.102700 (xsd:double) |
| dbp:parallax |
8.098000 (xsd:double) |
| dbp:propMoDec |
−94.026 (en) |
| dbp:propMoRa |
+38.424 (en) |
| dbp:radialV |
−37 (en) |
| dbp:radius |
70.850000 (xsd:double) |
| dbp:temperature |
3500 (xsd:integer) |
| dbp:type |
dbr:Asymptotic_giant_branch |
| dbp:uB |
+1.76 (en) |
| dbp:wikiPageUsesTemplate |
dbt:Reflist dbt:Short_description dbt:Starbox_astrometry dbt:Starbox_begin dbt:Starbox_catalog dbt:Starbox_character dbt:Starbox_detail dbt:Starbox_end dbt:Starbox_observe dbt:Starbox_reference dbt:Stars_of_Camelopardalis dbt:Val dbt:± dbt:DEC dbt:Odlist dbt:RA |
| dcterms:subject |
dbc:Asymptotic-giant-branch_stars dbc:Bright_Star_Catalogue_objects dbc:Camelopardalis_(constellation) dbc:Durchmusterung_objects dbc:Henry_Draper_Catalogue_objects dbc:High-proper-motion_stars dbc:Hipparcos_objects dbc:M-type_giants |
| gold:hypernym |
dbr:Star |
| rdf:type |
owl:Thing dbo:Place dbo:Location schema:Place dbo:CelestialBody yago:WikicatBinaryStars yago:WikicatM-typeGiants yago:Animal100015388 yago:BinaryStar109221070 yago:CelestialBody109239740 yago:Giant101323781 yago:LivingThing100004258 yago:NaturalObject100019128 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 yago:WikicatHRObjects yago:WikicatHenryDraperCatalogueObjects yago:WikicatHipparcosObjects dbo:Star yago:Star109444100 yago:Whole100003553 |
| rdfs:comment |
HD 30442 är en ensam stjärna i den mellersta delen av stjärnbilden Giraffen. Den har en skenbar magnitud av ca 5,41 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 6,5 mas, beräknas den befinna sig på ett avstånd på ca 500ljusår (ca 153 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -37 km/s. (sv) HD 30442，又名BD+63 543，SAO 13291、HR 1527，是一颗恒星，视星等为5.44，位于銀經146.25，銀緯12.16，其B1900.0坐标为赤經4h 42m 43.4s，赤緯+63° 12.16′ 5″。 (zh) HD 30442 (HR 1527) is a solitary star in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye with an apparent magnitude of 5.47 and is estimated to be 403 light years away from the Solar System. The object has a heliocentric radial velocity of −37 km/s, indicating that it is drifting closer. HD 30442 has a companion 120″ away along a position angle of 350°. It shares a common proper motion with HD 30442, suggesting physical relation, but its parallax indicates otherwise. (en) |
| rdfs:label |
HD 30442 (en) HD 30442 (sv) HD 30442 (zh) |
| owl:sameAs |
freebase:HD 30442 yago-res:HD 30442 wikidata:HD 30442 dbpedia-fa:HD 30442 dbpedia-sv:HD 30442 dbpedia-zh:HD 30442 https://global.dbpedia.org/id/4iQ4m |
| prov:wasDerivedFrom |
wikipedia-en:HD_30442?oldid=1121778575&ns=0 |
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wikipedia-en:HD_30442 |
| foaf:name |
HD30442 (en) |
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dbr:List_of_stars_in_Camelopardalis |
| is foaf:primaryTopic of |
wikipedia-en:HD_30442 |