Note: this is an archived version which has been superseded.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

3rd quadrant Galactic SNRs

G180.0-1.7 S147

Radio: Large faint shell, with spectral break.
Optical: Wispy ring.
X-ray: Possible detection.
Point sources: Pulsar within boundary.


Last updated: 27 Aug 1996

G184.6-5.8 Crab Nebula, 3C144, SN1054

Notes: This is the remnant of the SN of AD1054.

Radio: Filled-centre, central pulsar, with faint ``jet" (or tube) extending from the N edge.
Optical: Strongly polarized filaments, diffuse synchrotron emission, with ``jet" faintly visible.
X-ray: Centrally brightened around the pulsar.
Point sources: Pulsar powering the remnant.
Distance: Proper motions and radial velocities give 2 kpc.


Last updated: 22 AUG 1996

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.
Distance: Mean optical velocity suggests 0.7--1.5 kpc, association with S249 gives 1.5--2 kpc.


Last updated: 20 AUG 1996

G192.8-1.1 PKS 0607+17

Notes: Has been called G193.3-1.5. Has been regarded as part of the Origem Loop, a supposed larger remnant.

Radio: In complex region.
Optical: Encompasses S261 and S254--258.


Last updated: 23 FEB 1993

G205.5+0.5 Monoceros Nebula

Radio: In complex region, parts may be HII regions.
Optical: Large ring, near Rosette nebula.
X-ray: Possibly detected.
Distance: Mean optical velocity suggests 0.8 kpc, low frequency radio absorption suggests 1.6 kpc.


Last updated: 20 AUG 1996

G206.9+2.3 PKS 0646+06

Radio: Diffuse source near the Monoceros Nebula.
Optical: Filaments detected.
X-ray: Possibly detected.


Last updated: 21st September 1991


Radio: Non-thermal source hinted by Bologna survey.
Optical: Coincides with S284, filamentary ring with brighter central area.


Last updated: 29th February 1988

G260.4-3.4 Puppis A, MSH 08-44

Radio: Angular shell, brightest to the E, poorly defined to the W.
Optical: Nebulosity and wisps.
X-ray: Brightest to the E.
Point sources: Central compact X-ray source.
Distance: Association with HI gives 2.2±0.3 kpc.


Last updated: 20 AUG 1996


Radio: Faint shell with little limb brightening.


Last updated: 1st March 1988

G263.9-3.3 Vela (XYZ)

Notes: This refers to the whole Vela XYZ complex, of which X has at times been classified as a separate (filled-centre) remnant.

Radio: Large shell, with flatter spectrum component (Vela X).
Optical: Filaments.
X-ray: Patchy shell, with extensions, central nebula and pulsar.
Point sources: Pulsar within Vela X.
Distance: Vela pulsar implies 0.5 kpc.


Last updated: 21 AUG 1996

Dave Green/MRAO, Cambridge, UK/