Note: this is an archived version which has been superseded. The current SNR catalogue is at http://www.mrao.cam.ac.uk/surveys/snrs/

G57.2+0.8 (4C21.53)

• Right Ascension: 19 32 50
• Declination: +21 50
• Size (arcmin): 12?
• Type: S?
• Flux density at 1 GHz (Jy): 1.8?
• Spectral Index: ?

Radio: Extended non-thermal arc.

Point sources: Near the millisecond pulsar, but not thought to be related.

References:

• Sieber & Seiradakis 1984, A&A, 130, 257. Effelsberg 100-m at 1.4 GHz (8'.8: 1.34±0.1), 2.7 GHz (4'.3: 0.86±0.1), plus other surveys of the area. ADS
• Caswell et al. 1985, AJ, 90, 488. DRAO at 1.4 GHz (1'×3'). ADS

Last updated: 1st March 1988