the last time halley's comet passed earth was 1986.
the last time halley's comet passed earth was 1986.
when was the last time halley's comet passed earth?
1986
halley's comet is visible from earth every 74–79 years.









































section::::see also.









































bullet::::- list of halley-type comets









































bullet::::- halley's comet in fiction









































section::::external links.









































bullet::::- synopsis of the astronomy of comets (1706 reprint of halley's 1705 paper)









































bullet::::- halley's nucleus by giotto spacecraft (esa link)









































bullet::::- image of halley in 1986 by giotto spacecraft (nasa link)









































bullet::::- cometography.com









































bullet::::- 1p/halley at cometbase database









































bullet::::- seds.org









































bullet::::- orbital simulation from jpl (java) / ephemeris









































bullet::::- donald yeomans, "great comets in history"









































bullet::::- a brief history of halley's comet (ian ridpath)
halley's comet
by december 2014, the comet had brightened to roughly magnitude 7.4, making it a small telescope and binoculars target. by mid-december, the comet was visible to the naked eye for experienced observers with dark skies and keen eyesight. on 28−29 december 2014, the comet passed 1/3° from globular cluster messier 79. in january 2015, it brightened to roughly magnitude 4, and became one of the brightest comets located high in a dark sky since comet (hale-bopp) in 1997. on 7 january 2015, the comet passed from earth. it crossed the celestial equator on 9 january 2015, becoming better seen from the northern hemisphere. the comet came to perihelion (closest approach to the sun) on 30 january 2015, at a distance of from the sun. at perihelion, its water production rate exceeded 20 metric tons per second.
c/2014 q2 (lovejoy)