V_ V691 CrA / 2A 1822-371

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 5.57061288$\pm$0.00036 hr [2010MNRAS.409..755J]
Eccentricity:
Radial Velocity: 54.0$\pm$24.0 km/s [2003MNRAS.339..663J]

Donor

Spectral Type: M2-K0 V [1980ApJ...242L.109M]
Mo: 0.46$\pm$0.02 M$_{\odot}$ [2015A&A...577A..63I]

Accretor

Type: NS [2001ApJ...553L..43J]
Mx: 1.69$\pm$0.13 M$_{\odot}$ [2015A&A...577A..63I]
Spin Period: 0.59325$\pm$2e-05 s [2001ApJ...553L..43J]
X-ray Bursts: