NGC 4609 [SEP] constellation
NGC 4609
NGC 4609 is an open cluster in the southern constellation of Crux.
External links.
- NGC 4609 at WEBDA
member of the open cluster NGC 4609. 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.