Hercules X-1

Her X-1
Observation data
Epoch J2000      Equinox J2000
Constellation Hercules
Right ascension 16h 57m 49.83s
Declination +35° 20′ 32.6″
Apparent magnitude (V) 13.83
Spectral typeDA
Other designations
4U 1656+35, HZ Her
Database references
SIMBADdata

Hercules X-1 (Her X-1), also known as 4U1656+35, is a moderately strong X-ray binary source first studied by the Uhuru satellite. It is composed of a neutron star accreting matter from a normal star (HZ Her) probably due to Roche lobe overflow.

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