To our own surprise,there are still more interesting subjects in the field of mathematical astronomy, whence this fourth collection of Morsels.

Ahgain, many chapters are devoted to solar and lunar eclipses, and some unexpected facts are presented: a special type of central solar eclipse that is simultaneously annular and total, and which could be called "Buus's type", a region of visibility with two nodes ("Nico's eclipse"), a last point on a curve that is not the latest ("Meeus effect"?), and the variable length of Saros series.

Of course,planetary motions have not been forgotten, and we hope the reader will enjoy reading about asteroids of the Hilda type,pseudotrojans, and the exceptional minor planet Thule.