1A 0620-00

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 7.752336$\pm$9.6e-05 hr [1986ApJ...308..110M]
Eccentricity:
Radial Velocity: 4.0$\pm$2.0 km/s [1994MNRAS.266..137M]

Donor

Spectral Type: K4-5V [1980MNRAS.192..709M]
Mo: 0.34$\pm$0.03 M$_{\odot}$ [2017MNRAS.472.1907V]

Accretor

Type: BH [1987ATsir1477....1K]
Mx: 5.86$\pm$0.24 M$_{\odot}$ [2017MNRAS.472.1907V]
Spin Period:
X-ray Bursts: