QX Normae
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Norma |
| Right ascension | 16h 12m 43.0s[1] |
| Declination | −52° 25′ 23″ |
| Characteristics | |
| Spectral type | / |
| Astrometry | |
| Details | |
| Other designations | |
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4U 1608-52[1]
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QX Normae is an active low mass X ray binary in the constellation Norma. It is composed of a neutron star and a star smaller and cooler than the Sun. The X-ray component, known as 4U 1608-52, was discovered in the early 1970s, while the visual component, QX Normae, was discovered in 1977.[2] By analysing the interstellar extinction between Earth and the system, Güver and colleagues calculated the most likely distance to be 5.8 kpc (19,000 light-years), and the neutron star's mass to be 1.74 ± 0.14 times that of the Sun and radius to be a mere 9.3 ± 1.0 km.[3]
