| G1.9+0.3 | Kepler | Tycho | 1006 | SN 1987A | Cas A | Crab nebula | Cygnus loop | IC443 |
Radius (pc) | 4.7 | 4 | 5.6 | 18 | 0.49 | 5.055 | 3.41 | 9.6 | 11.1 |
Explosion energy (erg) | 0.2 × 1050 | 0.02 × 1050 | 0.18 × 1050 | 6 × 1050 | 1.34 × 1051 | 0.86 × 1051 | 0.015 × 1051 | 0.26 × 1051 | 0.06 × 1051 |