BO Carinae, also known as HD 93420, is an irregular variable star in the constellation Carina. BO Car has a maximum apparent magnitude of +7.18. Its distance and membership is uncertain, but its possible membership to the star cluster Trumpler 15 allows a distance estimate of approximately 2,500 parsecs (8,150 light-years). The Gaia Data Release 2 parallax of 0.73±0.08 mas suggests a closer distance, but the value is considered unreliable due to excess astrometric noise.
| Attributes | Values |
|---|
| rdf:type
| |
| rdfs:label
| - BO Carinae (en)
- BO Carinae (es)
|
| rdfs:comment
| - BO Carinae, also known as HD 93420, is an irregular variable star in the constellation Carina. BO Car has a maximum apparent magnitude of +7.18. Its distance and membership is uncertain, but its possible membership to the star cluster Trumpler 15 allows a distance estimate of approximately 2,500 parsecs (8,150 light-years). The Gaia Data Release 2 parallax of 0.73±0.08 mas suggests a closer distance, but the value is considered unreliable due to excess astrometric noise. (en)
- BO Carinae (BO Car / HD 93420 / SAO 238447) es una estrella variable en la constelación de Carina.De magnitud aparente máxima +7,18, es una estrella lejana que se encuentra a una incierta distancia.Su posible pertenencia al cúmulo estelar permite estimar que está a 2500 pársecs (8150 años luz) del Sistema Solar. Catalogada como una variable irregular LC —al igual que TZ Cassiopeiae o V528 Carinae—, el brillo de BO Carinae fluctúa entre magnitud +7,18 y +8,15, sin que se conozca periodicidad alguna. (es)
|
| foaf:name
| |
| foaf:depiction
| |
| dcterms:subject
| |
| Wikipage page ID
| |
| Wikipage revision ID
| |
| Link from a Wikipage to another Wikipage
| |
| sameAs
| |
| dbp:wikiPageUsesTemplate
| |
| thumbnail
| |
| absmag v
| |
| appmag v
| |
| caption
| - BO Carinae is the brightest red star, towards upper left, in this image of the Carina Nebula. (en)
|
| class
| |
| constell
| |
| epoch
| |
| luminosity
| |
| p error
| |
| parallax
| |
| radius
| |
| variable
| |
| has abstract
| - BO Carinae, also known as HD 93420, is an irregular variable star in the constellation Carina. BO Car has a maximum apparent magnitude of +7.18. Its distance and membership is uncertain, but its possible membership to the star cluster Trumpler 15 allows a distance estimate of approximately 2,500 parsecs (8,150 light-years). The Gaia Data Release 2 parallax of 0.73±0.08 mas suggests a closer distance, but the value is considered unreliable due to excess astrometric noise. BO Car is a red supergiant of spectral type M4Ib with an effective temperature of 3,525 K, a radius of 439 solar radii. Its bolometric luminosity is 26,000 L☉. Mass-loss is on the order of 0.3×10−9 solar masses per year. Billed as an irregular variable like TZ Cassiopeiae or V528 Carinae; its apparent brightness fluctuates between magnitude +7.18 and +8.50 without clear periodicity. Some observers have found BO Car not to be variable, but more extensive studies find small amplitude variations with a possible period of 145 days. Multiple star catalogues list an 11th-magnitude star as a companion to BO Car. The separation was 14.2″ in 2015, and slowly increasing. The companion is a distant blue giant. (en)
- BO Carinae (BO Car / HD 93420 / SAO 238447) es una estrella variable en la constelación de Carina.De magnitud aparente máxima +7,18, es una estrella lejana que se encuentra a una incierta distancia.Su posible pertenencia al cúmulo estelar permite estimar que está a 2500 pársecs (8150 años luz) del Sistema Solar. BO Carinae es una supergigante roja de tipo espectral M4I con una temperatura efectiva de 3525 K.Tiene un radio 790 veces más grande que el del Sol, lo que equivale a 3,7 UA por lo que si estuviese en el centro del Sistema Solar, los cuatro planetas más cercanos al Sol —entre ellos la Tierra— estarían englobados en el interior de la estrella.Su luminosidad bolométrica —considerando todas las longitudes de onda— alcanza las cifra de 78.000 veces la luminosidad solar.Pierde masa en forma de polvo a razón de 0,3 x 10-9 masas solares por año. Catalogada como una variable irregular LC —al igual que TZ Cassiopeiae o V528 Carinae—, el brillo de BO Carinae fluctúa entre magnitud +7,18 y +8,15, sin que se conozca periodicidad alguna. (es)
|
| credit
| |
| prov:wasDerivedFrom
| |
| page length (characters) of wiki page
| |
| foaf:isPrimaryTopicOf
| |
| is Link from a Wikipage to another Wikipage
of | |
| is Wikipage redirect
of | |
| is foaf:primaryTopic
of | |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
![[cxml]](/fct/images/cxml_doc.png)
![[csv]](/fct/images/csv_doc.png)
![[text]](/fct/images/ntriples_doc.png)
![[turtle]](/fct/images/n3turtle_doc.png)
![[ld+json]](/fct/images/jsonld_doc.png)
![[rdf+json]](/fct/images/json_doc.png)
![[rdf+xml]](/fct/images/xml_doc.png)
![[atom+xml]](/fct/images/atom_doc.png)
![[html]](/fct/images/html_doc.png)
