Omega Octantis (original) (raw)
Omega Octantis (23 Octantis) é uma estrela na direção da constelação de Octans. Possui uma ascensão reta de 15h 11m 08.79s e uma declinação de −84° 47′ 16.2″. Sua magnitude aparente é igual a 5.88. Considerando sua distância de 318 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.93. Pertence à classe espectral B9.5V.
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|---|---|
| dbo:abstract | Omega Octantis, (latinized from ω Octantis), is a solitary, bluish-white hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.87, allowing it to be faintly seen with the naked eye. Based on the object's parallax measurements, it is estimated to be 328 light years distant. However, it is drifting closer with a heliocentric radial velocity −7.6 km/s. Omega Octantis has a stellar classification of B9.5 V, indicating that it is a main-sequence star between the B9 and A0 classes. Helmut A. Abt & Nidia I. Morrell gave a slightly updated class of B9.5 Vs, which includes sharp (narrow) absorption lines in Omega Octantis' spectrum due to slow rotation. It has a mass 2.54 times that of the Sun and is calculated to be 197 million years old, having completed 40% of its main sequence lifetime. It has a luminosity of 50.5 L☉, which comes from a radius of 2.35 R☉ and an effective temperature of 10,759 K. In 2012, George A. Gontcharov calculated a solar metallicity for Omega Octantis, and it is spinning modestly with a projected rotational velocity of 36 km/s. The slow rotation is consistent with the spectral classification from Abt & Morell (1995). (en) Omega Octantis (23 Octantis) é uma estrela na direção da constelação de Octans. Possui uma ascensão reta de 15h 11m 08.79s e uma declinação de −84° 47′ 16.2″. Sua magnitude aparente é igual a 5.88. Considerando sua distância de 318 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.93. Pertence à classe espectral B9.5V. (pt) Omega Octantis är en blåvit stjärna i huvudserien i Oktantens stjärnbild. Stjärnan har visuell magnitud +5,87 och är svagt synlig för blotta ögat vid god seeing. Den befinner sig på ett avstånd av ungefär 315 ljusår. (sv) 南極座ω，又名CP-84 490，HD 131596、SAO 258717、HR 5557，是南極座的一颗恒星，视星等为5.91，位于銀經306.17，銀緯-22.82，其B1900.0坐标为赤經14h 49m 21.9s，赤緯-84° -22.82′ 39″。 (zh) |
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| dbp:absmagV | +0.94 (en) |
| dbp:ageMyr | 197 (xsd:integer) |
| dbp:appmagV | 5.870000 (xsd:double) |
| dbp:bV | −0.06 (en) |
| dbp:class | B9.5 V (en) |
| dbp:constell | dbr:Octans |
| dbp:epoch | J2000.0 (en) |
| dbp:gravity | 4.210000 (xsd:double) |
| dbp:luminosity | 50.500000 (xsd:double) |
| dbp:mass | 2.540000 (xsd:double) |
| dbp:metalFe | 0 (xsd:integer) |
| dbp:pError | 0.059100 (xsd:double) |
| dbp:parallax | 9.940600 (xsd:double) |
| dbp:propMoDec | −9.385 (en) |
| dbp:propMoRa | +2.984 (en) |
| dbp:radialV | −7.6 (en) |
| dbp:radius | 2.350000 (xsd:double) |
| dbp:rotationalVelocity | 36 (xsd:integer) |
| dbp:temperature | 10759 (xsd:integer) |
| dbp:type | dbr:Main_sequence |
| dbp:uB | −0.13 (en) |
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| dct:subject | dbc:B-type_main-sequence_stars dbc:Bayer_objects dbc:Bright_Star_Catalogue_objects dbc:Durchmusterung_objects dbc:Gould_objects dbc:Henry_Draper_Catalogue_objects dbc:Hipparcos_objects dbc:Octans |
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| rdfs:comment | Omega Octantis (23 Octantis) é uma estrela na direção da constelação de Octans. Possui uma ascensão reta de 15h 11m 08.79s e uma declinação de −84° 47′ 16.2″. Sua magnitude aparente é igual a 5.88. Considerando sua distância de 318 anos-luz em relação à Terra, sua magnitude absoluta é igual a 0.93. Pertence à classe espectral B9.5V. (pt) Omega Octantis är en blåvit stjärna i huvudserien i Oktantens stjärnbild. Stjärnan har visuell magnitud +5,87 och är svagt synlig för blotta ögat vid god seeing. Den befinner sig på ett avstånd av ungefär 315 ljusår. (sv) 南極座ω，又名CP-84 490，HD 131596、SAO 258717、HR 5557，是南極座的一颗恒星，视星等为5.91，位于銀經306.17，銀緯-22.82，其B1900.0坐标为赤經14h 49m 21.9s，赤緯-84° -22.82′ 39″。 (zh) Omega Octantis, (latinized from ω Octantis), is a solitary, bluish-white hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.87, allowing it to be faintly seen with the naked eye. Based on the object's parallax measurements, it is estimated to be 328 light years distant. However, it is drifting closer with a heliocentric radial velocity −7.6 km/s. (en) |
| rdfs:label | Omega Octantis (en) Omega Octantis (pt) Omega Octantis (sv) 南極座ω (zh) |
| owl:sameAs | wikidata:Omega Octantis dbpedia-pt:Omega Octantis dbpedia-sv:Omega Octantis dbpedia-zh:Omega Octantis https://global.dbpedia.org/id/7pZU |
| prov:wasDerivedFrom | wikipedia-en:Omega_Octantis?oldid=1122225973&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Red_circle.svg wiki-commons:Special:FilePath/Octans_IAU.svg |
| foaf:isPrimaryTopicOf | wikipedia-en:Omega_Octantis |
| foaf:name | ω Octantis (en) |
| is dbo:wikiPageRedirects of | dbr:Omega_Oct dbr:Ω_Octantis |
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