Lich in the context of Greyhawk (supplement)

PSR B1257+12, alternatively designated PSR J1300+1240, is a millisecond pulsar, 2,300 light-years (710 parsecs) from the Sun, in the constellation Virgo, rotating at 160.8 times per second (faster than the blade of a blender). It is also named Lich, after a powerful, fictional undead creature.

The pulsar has a planetary system with three known pulsar planets, named "Draugr" (PSR B1257+12 b or PSR B1257+12 A), "Poltergeist" (PSR B1257+12 c, or PSR B1257+12 B), and "Phobetor" (PSR B1257+12 d, or PSR B1257+12 C). They were both the first extrasolar planets to be discovered and the first pulsar planets to be discovered—B and C in 1992 and A in 1994. A is the lowest-mass planet yet discovered by any observational technique, having somewhat less than twice the mass of Earth's moon.

The lich /lɪtʃ/ is an undead creature found in the Dungeons & Dragons (D&D) fantasy role-playing game. Liches are spellcasters who seek to defy death by magical means.

The term derives from lich, an archaic term for a corpse. Dungeons & Dragons co-creator Gary Gygax stated that he based the description of a lich included in the game on the short story "The Sword of the Sorcerer" (1969) by Gardner Fox.