Aquila X-1 (frequently abbreviated to Aql X-1) is a low-mass x-ray binary (LMXB) and the most luminous X-Ray source in the constellation Aquila.

It was first observed by the satellite Vela 5B which detected several outbursts from this source between 1969 and 1976.

[4] Its optical counterpart is variable, so it was named V1333 Aql according to the IAU standards.

[1] The neutron star radiation flux is slightly variable due to the nuclear burning of the accreted helium on the surface.

You can help Wikipedia by expanding it.This variable star–related article is a stub.