X Sgr X-1 / GX 3+1

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 11.0$\pm$7.0 hr [2014ApJ...793..128V]
Eccentricity:
Radial Velocity:

Donor

Spectral Type: G0--M5V-III [2014ApJ...793..128V]
Mo:

Accretor

Type: NS [1983ApJ...267..310M]
Mx:
Spin Period:
X-ray Bursts: yes [1983ApJ...267..310M]