There was an incident quite contrary to the usual cases in which tenmon hakase conducted tenmon misso (Article on April 22, 1235 of "Meigetsuki (Chronicle of the Bright Moon) ") : in 1235, one member of the Abe clan who had not received an imperial decree was appointed as tenmon hakase for his distinguished service in reporting temporarily appearing stars.
天福(日本)2年（1235年）には宣旨を受けていない安倍家氏が客星出現を知らせた功績で天文博士に補されるという本来の天文博士が天文密奏を行うのとは逆の事例も生じている（『明月記』文暦2年3月26日条）。