Note: this is an archived version which has been superseded. The current SNR catalogue is at

G189.1+3.0 IC443, 3C157

Radio: Limb-brightened to NE, with faint extension to the E.
Optical: Brightest to the NE, with faint filaments outside the NE boundary.
X-ray: Shell, brightest to the NE, with nebula and compact source.
Point sources: Compact X-ray source in S.
Distance: Mean optical velocity suggests 0.7-1.5 kpc, association with S249 gives 1.5-2 kpc.


Last updated: 31 Dec 2001

Dave Green/MRAO, Cambridge, UK/