KQ Puppis (original) (raw)

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dbo:abstract KQ Puppis (KQ Pup) is a spectroscopic binary variable star in the constellation Puppis. A red supergiant star and a hot main sequence star orbit each other every 9,742 days. Its apparent magnitude varies between 4.82 and 5.17. The KQ Puppis system consists of a fairly typical M2 supergiant, in orbit with a hotter less luminous star. The hotter star is surrounded by a disc of material being transferred from the cool supergiant. This type of binary is referred to a VV Cephei system, although in this case there are no eclipses of either star. A portion of the disc does appear to be eclipsed and this is detected as a strong drop in far-ultraviolet radiation for about a third of the orbit. The red supergiant primary star has been compared to Betelgeuse. It shows small amplitude irregular pulsations, and also some variation associated with the orbital motion. The nature of the secondary is less certain. The spectrum shows high excitation features that would indicate an early B or hotter spectral type, but these may be associated with the disc rather than that star itself. Other studies have found a spectrum similar to an A supergiant, but this is thought to be an artefact of a B-type shell star. KQ Puppis has been catalogued as an outlying member of the open cluster Messier 47 (NGC 2422) and would be the brightest member of that cluster. Membership is uncertain as it appears to be more distant than the other stars in the cluster. (en) HD 60414 è una stella di magnitudine 4,97 situata nella costellazione della Poppa. Dista 1304 anni luce dal sistema solare ed è una variabile irregolare. (it) 船尾座KQ,又名BD-14 1971,HD 60414、SAO 153072、HR 2902,是船尾座的一颗恒星,视星等为4.97,位于銀經230.67,銀緯2.52,其B1900.0坐标为赤經7h 29m 12.3s,赤緯-14° 2.52′ 27″。 (zh)
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dbp:appmagV (en) +4.97 (en)
dbp:bV +1.41 (en)
dbp:class M2Iab + B0Ve (en)
dbp:component Primary (en) Secondary (en) Cool primary (en) Hot secondary (en)
dbp:constell dbr:Puppis_(constellation)
dbp:eccentricity 0.460000 (xsd:double)
dbp:epoch J2000 (en)
dbp:inclination 60 (xsd:integer)
dbp:luminosity 13800 (xsd:integer) 26500 (xsd:integer)
dbp:mass 13 (xsd:integer) 17 (xsd:integer)
dbp:names HD 60414 (en) HD 60415 (en) KQ Pup, BD−14°1971, HIP 36773, HR 2902, NGC 2422 9, SAO 153072 (en)
dbp:pError 0.229600 (xsd:double)
dbp:parallax 1.489400 (xsd:double)
dbp:periodUnitless 8.425728E8
dbp:propMoDec +3.34 (en)
dbp:propMoRa -6.584000 (xsd:double)
dbp:radialV +22 (en)
dbp:radius 4.350000 (xsd:double) 415 (xsd:integer)
dbp:temperature 3662 (xsd:integer) 30000 (xsd:integer)
dbp:uB +0.29 (en)
dbp:variable dbr:Slow_irregular_variable
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dcterms:subject dbc:B-type_main-sequence_stars dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects dbc:Emission-line_stars dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbc:M-type_supergiants dbc:Objects_with_variable_star_designations dbc:Puppis dbc:Slow_irregular_variables dbc:Spectroscopic_binaries
gold:hypernym dbr:Star
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rdfs:comment HD 60414 è una stella di magnitudine 4,97 situata nella costellazione della Poppa. Dista 1304 anni luce dal sistema solare ed è una variabile irregolare. (it) 船尾座KQ,又名BD-14 1971,HD 60414、SAO 153072、HR 2902,是船尾座的一颗恒星,视星等为4.97,位于銀經230.67,銀緯2.52,其B1900.0坐标为赤經7h 29m 12.3s,赤緯-14° 2.52′ 27″。 (zh) KQ Puppis (KQ Pup) is a spectroscopic binary variable star in the constellation Puppis. A red supergiant star and a hot main sequence star orbit each other every 9,742 days. Its apparent magnitude varies between 4.82 and 5.17. KQ Puppis has been catalogued as an outlying member of the open cluster Messier 47 (NGC 2422) and would be the brightest member of that cluster. Membership is uncertain as it appears to be more distant than the other stars in the cluster. (en)
rdfs:label KQ Puppis (en) HD 60414 (it) 船尾座KQ (zh)
owl:sameAs freebase:KQ Puppis yago-res:KQ Puppis wikidata:KQ Puppis dbpedia-it:KQ Puppis dbpedia-zh:KQ Puppis https://global.dbpedia.org/id/3VF4y
prov:wasDerivedFrom wikipedia-en:KQ_Puppis?oldid=1121978647&ns=0
foaf:depiction wiki-commons:Special:FilePath/KQPupLightCurve.png wiki-commons:Special:FilePath/M47_tel114.png
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foaf:name KQ Puppis (en)
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