NGC 172 is a barred spiral galaxy located around 136 million light-years away[2] in the constellation Cetus.[1] It was discovered in 1886 by astronomer Frank Muller.[3]
See also
References
- ^ a b c d e f g h "Results for NGC 0172". NASA/IPAC Extragalactic Database. Retrieved 2016-09-02.
- ^ a b An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
- ^ "New General Catalog Objects: 150 - 199". cseligman.com. Retrieved 2018-02-13.
External links
Media related to NGC 172 at Wikimedia Commons- NGC 172 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
