{"dataset":{"slug":"comet-transition-objects","title":"Comet Transition Objects","description":"Objects blurring the asteroid–comet boundary: active asteroids and dormant comets.","version":"1.0.0","lastGenerated":"2026-06-29","license":"CC BY-SA 4.0","entityCount":4,"sources":["nasa","jpl"]},"entities":[{"id":"dormant_comet:2003-eh1","name":"(196256) 2003 EH1","type":"dormant_comet","domain":"science","description":"An asteroid on a short-period, comet-like orbit believed to be a dormant or extinct comet nucleus — the parent body of the sharp, brief Quadrantid meteor shower.","entryPath":"/comets/dormant/2003-eh1"},{"id":"active_asteroid:phaethon","name":"3200 Phaethon","type":"active_asteroid","domain":"science","description":"A near-Earth asteroid that brightens and sheds dust as it passes very close to the Sun — a 'rock comet' — and the parent body of the Geminid meteor shower, unusual for a shower whose source is an asteroid rather than a comet.","entryPath":"/comets/active/phaethon"},{"id":"dormant_comet:don-quixote","name":"3552 Don Quixote","type":"dormant_comet","domain":"science","description":"A large near-Earth object on a comet-like orbit long suspected to be a dormant comet; faint carbon-dioxide activity was detected in 2013, suggesting it is not fully extinct.","entryPath":"/comets/dormant/don-quixote"},{"id":"active_asteroid:elst-pizarro","name":"7968 Elst–Pizarro","type":"active_asteroid","domain":"science","description":"The prototype main-belt comet — an object on an ordinary asteroid-belt orbit that repeatedly develops a comet-like tail, carrying both an asteroid number and a comet designation.","entryPath":"/comets/active/elst-pizarro"}]}