Berliner Astronomisches Jahrbuch

The Berliner Astronomisches Jahrbuch (abbrev. B.A.J.) is an astronomical ephemeris almanac and one of the longest publication series in astronomy. It was a compendium of ephemerides of all large Solar System bodies and of fundamental stars which define the celestial reference system.

The B.A.J. series was founded by Johann Elert Bode, and is thus sometimes referred to as Bode's Astronomisches Jahrbuch.