About: HD 87643

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HD 87643 is a B[e] class binary star embedded in a reflection nebula. The system is described as having "one of the most extreme infrared excesses for this object class". It harbours a large amount of both hot and cold dust, and is surrounded by a debris disk with radius 2.5-3 AU and an extended reflection nebula. and is important for astronomers in their study of stellar formation.

Property	Value
dbo:abstract	HD 87643 is a B[e] class binary star embedded in a reflection nebula. The system is described as having "one of the most extreme infrared excesses for this object class". It harbours a large amount of both hot and cold dust, and is surrounded by a debris disk with radius 2.5-3 AU and an extended reflection nebula. and is important for astronomers in their study of stellar formation. All the properties of HD 87643 are highly uncertain. Its distance has been estimated anywhere from one to six kpc. The General Catalogue of Variable Stars classifies it as an Orion variable, a pre-main sequence star, but other authors consider it to be a supergiant B[e] star. It has been confirmed to be a binary star system with the two stars separated by about 52 AU, but the nature of the companion is unknown. (en)
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dbp:absmagV	−4.1 (en)
dbp:appmagV	8.870000 (xsd:double) (en)
dbp:bV	+0.69 (en)
dbp:class	B3 I[e] (en)
dbp:constell	dbr:Carina_(constellation)
dbp:distPc	1500 (xsd:integer)
dbp:epoch	J2000 (en)
dbp:luminosity	41000 (xsd:integer)
dbp:mass	25 (xsd:integer)
dbp:propMoDec	3.300000 (xsd:double)
dbp:propMoRa	−7.7 (en)
dbp:simbad	HD+87643 (en)
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dbp:uB	−0.54 (en)
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rdfs:comment	HD 87643 is a B[e] class binary star embedded in a reflection nebula. The system is described as having "one of the most extreme infrared excesses for this object class". It harbours a large amount of both hot and cold dust, and is surrounded by a debris disk with radius 2.5-3 AU and an extended reflection nebula. and is important for astronomers in their study of stellar formation. (en)
rdfs:label	HD 87643 (en)
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foaf:name	HD 87643 (en)
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