The Seyfert galaxy NGC 4151 is one of the nearest (z=0.00332, D=13.2 Mpc when a Hubble constant of 75 km s~(-1)Mpc~(-1) is used) and brightest Seyfert 1 galaxies.

• 赛弗特星系NGC4151是一个离我们最近(当哈勃常数取75km s~(-1)Mpc~(-1)时，红移为0.；00332，距离为13