He was born in Lima on May 28,1832, in the home formed by Pedro Astete Núñez, known diplomatic and political, and Maria Manuela Fernandez de Paredes Noriega. He married to Peregrina Guerrero Alvarez Calderon, with six children.
Entered in 1850 to the Naval Academy, embarking in the frigate French "Algérie", and then in the "Sérieuse", in which traveled to Europe. While in London, was assigned to complete the provision of steam "Amazon". In 1854, as a Lieutenant, step to serve on Board of the schooner "Hector".
Astete had an activity political active and sometimes agitated. Although it supported Ramón Castilla to overthrow José Rufino Echenique, was exiled to Chile to join the cause of political prisoners of Castile transported bound for Mexico. At return to Peru, after having served in the schooner of war "Libertad" and in the Brig "Guise", was retired in January 1858 by adhere is to the rebellion headed by Manuel Ignacio de Vivanco against Castilla.
During this period came to be member from Huaraz to the Congress between 1860 and 1864. In the episode of the war with Spain in 1866, as a Lieutenant Commander, attended the Battle of 2 de Mayo aboard steam 'Sachaca'. Between 1865 and 1870 he served as math Professor at the Naval Academy. In 1877 he bowed to the rise of Piérola Nicolás against Mariano Ignacio Prado. Thus, participated on Board of the monitor "Huáscar" in the Battle of Pacocha on May 29 of that year, facing is to them ships British "Shah" and "Amethyst".
To the trigger is the war of the Pacific in 1879, Astete meets functions as agent to acquire armament in the United States. To the year following is appointed Chief political military to the perform is the site of the port of Callao, resisting the attack of the invaders by five months. He was taken prisoner by the Chilean at the end of the battle of Miraflores, and being released bowed to the forces of Andrés À. Cáceres to continue the struggle in the mountain. He was appointed Commander General of the Fourth Division of Cavalry in May 1883, attending the battle of Concepción and Marcavalle, Pucará, Zapallango Huamachuco. He died in this last battle, which occurred on 10 July of that year, trying to take by assault a fortress of the Chilean army.