From the facts that fragments of unglazed ware assumed to be TK43-type in Tanabe Chronology from their characteristics were unearthed in the measurement survey by the Imperial Household Agency and that no haniwa (clay figure) found in kofun built by the 5th century to the latter half of 6th century has been discovered, the theory that this kofun was constructed in the latter half of the 6th century has been highly probable.
宮内庁の実測調査時に特徴から田辺編年のTK43型式の須恵器片が出土しており、5,6世紀半ばまでに築造された古墳に見られる埴輪は一つも発見されていないことからも、築造時期は6世紀後半であるとの説が有力視されている。