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HD 110432 is a Be star in the south-east of Crux, behind the center of the southern hemisphere's dark
Coalsack Nebula. It has a 
HD 110432 is a Be star in the south-east of Crux, behind the center of the southern hemisphere's dark
Coalsack Nebula. It has a stellar classification
In astronomy, stellar classification is the classification of stars based on their stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction grati ...
of B1IVe, which means it is a subgiant star of class B that displays emission lines in its spectrum. This is a variable star of the Gamma Cassiopeiae type, indicating it is a shell star with a circumstellar disk of gas about the equator, and has the variable star designation
In astronomy, a variable star designation is a unique identifier given to variable stars. It uses a variation on the Bayer designation format, with an identifying label (as described below) preceding the Latin genitive of the name of the constell ...
BZ Crucis. It is not known to be a member of a binary system, although it is probably a member of the open cluster NGC 4609
NGC 4609 (also known as Caldwell 98) is an open cluster of stars in the southern constellation of Crux. It was discovered on May 12, 1826 by the Scottish astronomer James Dunlop. The cluster has an apparent visual magnitude of 6.9 and spans an ...
. This star is moderately luminous in the X-ray band, with a variable energy emission of in the range 0.2−12 keV. The X-ray emission may be caused by magnetic activity, or possibly by accretion onto a white dwarf companion.
Distance
The distance of published in the 2007 newHipparcos
''Hipparcos'' was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial obj ...
reduction is over twice the distance of the Coalsack Nebula. The distance from Gaia Data Release 2
The ''Gaia'' catalogues are star catalogues created using the results obtained by ''Gaia'' space telescope.
The catalogues are released in stages that will contain increasing amounts of information; the early releases also miss some stars, especia ...
is even further at .
References
{{DEFAULTSORT:HD 110432 Crux (constellation) Be stars B-type subgiants Cruciis, BZ 4830 110432 062027 Durchmusterung objects