IGR J19566+0326 / MAXI J1957+032

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 1.014735$\pm$1.7e-05 hr [2022MNRAS.516L..76S]
Eccentricity: 0.014$\pm$-99.0 [2022MNRAS.516L..76S]
Radial Velocity:

Donor

Spectral Type: K-MV [2017ApJ...851..114R]
Mo:

Accretor

Type: NS [2022MNRAS.516L..76S]
Mx:
Spin Period: 0.003188331$\pm$3e-12 s [2022MNRAS.516L..76S]
X-ray Bursts: