Note: this is an archived version which has been superseded.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

G39.7−2.0     W50, SS433

Notes: Eastern part has been called G40.0−3.1. Is this a SNR?

Radio: Elongated shell, containing SS433, adjacent to the HII region S74.
Optical: Faint filaments at the edge of the radio emission.
X-ray: Emission from SS433 and two lobes.
Point sources: SS433 is the compact source in the centre of the W50.
Distance: Association with HI implies 3 kpc.


Last updated: 26 Apr 2006

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