 Avisual bandlight curve for Aquila X-1 during a July 1996 outburst, adapted from Garciaet al. (1999)[1] | |
| Observation data EpochJ2000.0 EquinoxJ2000.0 (ICRS) | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 11m 16.05720s[2] |
| Declination | +00° 35′ 05.8767″[2] |
| Characteristics | |
| Spectral type | K4[3] |
| Variable type | LMXB[4] |
| Other designations | |
| V1333 Aql,2MASS J19111604+0035058[5] | |
| Database references | |
| SIMBAD | data |
Aquila X-1 (frequently abbreviated toAql X-1) is alow-mass x-ray binary (LMXB) and the most luminous X-Ray source in the constellationAquila. It was first observed by the satelliteVela 5B which detected several outbursts from this source between 1969 and 1976.[4] Its optical counterpart is variable, so it was namedV1333 Aql according to theIAU standards. The system hosts aneutron star that accretes matter from amain sequence star ofspectral type K4.[3] The binary's orbital period is 18.9479 hours.[1]
The neutron star radiation flux is slightly variable due to the nuclear burning of the accreted helium on the surface.[6]
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