Name

$t_0\left(\text{yr}\right)$

$r_0\left(\text{pc}\right)$

Tycho

15.6

0.47

30,000

0.152

12.83

−44.41

Cas A

9.3

0.285

30,000

0.0383

40.43

−47.15

Cygnus loop

9.96

0.3

30,000

0.0443

23.29

−0.1

SN 1006

55.15

1.689

30,000

0.07

31.53

−22.91