Comet Halley's close encounter with Earth 1986

comet Halley's close encounter with Earth 1986. Halley revolution around the sun which takes 76 years and bring it to Earth vicinity. created with Kurdistan Planetarium

Halley's Comet or Comet Halley (officially designated 1P/Halley) is the most famous of the periodic comets, and is visible from Earth every 75 to 76 years. Many comets with long orbital periods may appear brighter and more spectacular, but Halley is the only short-period comet that is clearly visible to the naked eye, and thus, the only naked-eye comet that might appear twice in a human lifetime. During its returns to the inner solar system, it has been observed by astronomers since at least 240 BC, but it was only recognized as a periodic comet in the 18th century when its orbit was computed by English astronomer Edmond Halley, after whom it is named. Halley's Comet last appeared in the inner Solar System in 1986 and will next appear in mid-2061.

During its 1986 apparition, Halley's Comet became the first to be observed in detail by spacecraft, providing the first observational data on the construction of the comet nucleus and the mechanism of tail formation. These observations supported a number of longstanding hypotheses about comet construction, particularly Fred Whipple's "dirty snowball" model, but also provided data which substantially reformed and reconfigured these ideas.

Discovered by prehistoric (observation);
Edmond Halley (recognition of periodicity)
Orbital characteristics (Epoch 2449400.5)
(February 17, 1994)
Aphelion 35.1 AU
(December 9, 2023)
Perihelion 0.586 AU
last perihelion: February 9, 1986
next perihelion: July 28, 2061
Semi-major axis 17.8 AU
Eccentricity 0.967
Orbital period 75.3 a
Inclination 162.3°
Physical characteristics
Dimensions 15×8 km[3], 11 km (mean)
Mass 2.2 × 1014 kg
Mean density 0.6 (estimates range from 0.2 to 1.5 g/cm³)
Sidereal rotation
period 2.2 d (52.8 h) (?)
Albedo 0.04
Apparent magnitude 28.6

Category:

Science & Technology

Tags:

• NASA
• Halley
• comet
• comets
• solar
• system
• dooms
• day
• earth
• astronomy
• kurd
• kurdistan

[mickasso1]

THIS WOULD BEE A CHEAP WAY 2 TRAVEL THREW SPACE JUST FIRE A ROCKET AT HAYLEYS COMET NEXT TIME ITS SUPPOST 2 COME THIS WAY THEN WE JUST LOCK ON AND HAY LEY PRESTO A FREE ROUND TRIP TICKET AROUND OUR SOLAR SYSTEM PLUS AS ITS MADE OF MOSTLY ICE WE ALSO GET ALL THE FREE DRINKING WATER WE NEED 2 ASWELL

[KurdstanPlanetarium]

@mickasso1 Thats actually true, the best way to circum navigate the Solar System is to hitchhike a peroidic comet or an Asteroid, or even to travel cheap to outer Planets to ride on one these comets and simply when reaching the desired destination is to fire the rocket and lift off...you are absolutely right we have all the drinking water we need and even can be used to fuel for rockets in future...thankx for the comment:)

[SpaceChronologyCom]

Very nice video.

[KurdstanPlanetarium]

@SpaceChronologyCom thank you...

[SpaceChronologyCom]

@KurdstanPlanetarium Are you its creator? May I use it on my web-site?

[KurdstanPlanetarium]

@SpaceChronologyCom yes i made it with my Planetarium, and have more videos about Halley's Comet and other comets too. you can enjoy it on your web site, no problem

but pls give me credit for it thanks,,

[HSDOL]

OMG tthey should well try and put a rover on it or something and take pitures from out side the solour system

[Rikaruro]

@kamen687 Me too, so we are the chosen 1 ... or 2?

[kamen687]

i was born when haleys comet went by so its a sign

[SpaceChronologyCom]

@KurdstanPlanetarium Thanks, done! - spacechronology. com/1980s.html#1986

[KurdstanPlanetarium]

@meds613 Thank you...

[meds613]

@KurdstanPlanetarium great explaination

[marvin04161966]

It would be cool if you put approx. dates with the graphics, oh, i'll be 95 when it comes again, lol, looking forward to it, being too optimistic??????

[KurdstanPlanetarium]

@cruel2003 thanx...

[cruel2003]

@KurdstanPlanetarium ok, subscribe you

[KurdstanPlanetarium]

@cruel2003 yes I am an Amateur Astronomer...

[cruel2003]

@KurdstanPlanetarium geez, are you an astronomer ?

[cruel2003]

@KJT922010T old dude

[cruel2003]

@KurdstanPlanetarium spot it

[Smash4Tress2]

This year is the centennial of Halley's comet's visibility to earth =D

[TheDarkone1111]

I saw it back in 1986 ... i was in Honduras at the time ... and the view was much better from there, rather than from the states.

[JFKFOREVER2010]

I was 4 years old then and I will be 80 when it returns in 2061 fun throught

[KJT922010T]

I will be 69 when Halleys comet comes by again

[littlerascalslol89]

wait till 2060 it will be bakcaround u see it your self

[KurdstanPlanetarium]

@skilledblade

there is always that posiblity of coliding with Earth, its not alone in this, there are as many as 2000 Earth Crossing objects, comets and meteorites that poss real threat to life here on Earth, it happened in the past it will happen in future no doubt.

the question is when will happend again, hopefully we arl lucky enough to detect them b4 entering danger zone and do something about them..Dinosaurs made it 185 million years b4 extinction, human is here only 3 million years.