the nebula. The visible planetary nebula is approximately spherical and far older than the 1919 outburst. A much smaller nebula originating from the outburst is non-spherical. The shape may be a disc plus a bipolar nebula or torus containing a dusty band. The band or disc almost entirely obscures the central star. Comparison of the angular size changes of the nebula and its radial velocities suggest a distance of 4,600 parsecs. References See also FG Sagittae Sakurai's Object Aquila (constellation) Variable stars Aquilae, V605 IRAS catalogue objects