V_ V4641 Sgr / SAX J1819.3-2525

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 67.60272$\pm$0.01 hr [2001ApJ...555..489O]
Eccentricity:
Radial Velocity: 72.7$\pm$3.3 km/s [2005MNRAS.363..882L]

Donor

Spectral Type: B9III [2001ApJ...555..489O]
Mo: 2.9$\pm$0.4 M$_{\odot}$ [2014ApJ...784....2M]

Accretor

Type: BH [2014ApJ...784....2M]
Mx: 6.4$\pm$0.6 M$_{\odot}$ [2014ApJ...784....2M]
Spin Period:
X-ray Bursts: