NGC4129 is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background for is , which corresponds to a Hubble distance of . Additionally, 12 non-redshift measurements give a distance of . It was discovered by German-British astronomer William Herschel on 3 March 1786. It was also observed by Heinrich d'Arrest on 15 March 1866, causing it to be listed twice in the New General Catalogue, as NGC 4129 and as NGC 4130.
Supernovae Two supernovae have been observed in NGC 4129: SN1954aa (type unknown, mag. 19.9) was discovered by Fritz Zwicky on 2 April 1954. SN2002E (TypeII, mag. 19.9) was discovered by LOTOSS (Lick Observatory and Tenagra Observatory Supernova Searches) on 16 January 2002.
See also List of NGC objects (4001–5000)
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