V_ V818 Sco / Sco X-1

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 18.8955$\pm$1e-05 hr [2016MNRAS.459.3596H]
Eccentricity:
Radial Velocity: -114.0$\pm$0.6 km/s [2002ApJ...568..273S]

Donor

Spectral Type: K4IV [2015MNRAS.449L...1M]
Mo: 0.5$\pm$0.2 M$_{\odot}$ [2015MNRAS.449L...1M]

Accretor

Type: NS [2021MNRAS.508.1389C]
Mx: 1.5$\pm$0.1 M$_{\odot}$ [2021MNRAS.508.1389C]
Spin Period:
X-ray Bursts: