the last time halley's comet came by was 1986.
the last time halley's comet came by was 1986.
when was the last time halley's comet came by?
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 early may 2015 the comet was around apparent magnitude 12 and had an elongation of 60 degrees from the sun as it moved further into the southern hemisphere. the comet came to solar conjunction on 6 november 2015 when the comet was around magnitude 6. the comet came to perihelion (closest approach to the sun) on 15 november 2015 at a distance of 0.82 au from the sun. at perihelion, it had a velocity of with respect to the sun which is slightly greater than the sun's escape velocity at that distance. it crossed the celestial equator on 17 december 2015 becoming a northern hemisphere object. on 17 january 2016 the comet will pass from earth and should be around magnitude 6 while located in the constellation of ursa major.
c/2013 us10