NGC 3953

NGC 3953 is a barred spiral galaxy located in the constellation Ursa Major. Its velocity with respect to the cosmic microwave background is , which corresponds to a Hubble distance of . However, 33 non-redshift measurements give a closer mean distance of . It was discovered by Pierre Méchain on 12 March 1781.

NGC 3953 is known to exhibit an inner ring structure that encircles the bar. NGC 3953 is a member of the M109 Group, a large group of galaxies located within the constellation Ursa Major that may contain over 50 galaxies.

Supernovae

Two supernovae have been identified within NGC 3953:

• SN 2001dp (TypeIa, mag. 14.5) was discovered by Marco Migliardi and E. Dal Farra on 12 August 2001.
• SN 2006bp (TypeII, mag. 16.7) was discovered by Kōichi Itagaki on 9 April 2006.

References

External links

• Spiral Galaxy NGC 3953 – Supernova 2001 dp
• SEDS: Spiral Galaxy NGC 3953