anomalistic year

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The time taken for the Earth to complete one revolution with respect to its apsides, usually defined as the time between perihelion passages.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun time of the earth's revolution from perihelion to perihelion again; 365 days and 6 hr and 13 min and 53.1 sec