X Aql X-1 / Aql X-1

DSS color 2MASS AllWISE GLIMPSE 360 XMM Chandra

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Binary

Orbital Period: 18.71$\pm$0.06 hr [2000AJ....120..943W]
Eccentricity:
Radial Velocity:

Donor

Spectral Type:
Mo:

Accretor

Type: NS [2008ApJS..179..360G]
Mx:
Spin Period: 0.001817275$\pm$3e-09 s [2008ApJ...674L..41C]
X-ray Bursts: yes [2008ApJS..179..360G]