Halley's Comet - P1

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:

• Halley's Comet
• Comets
• Meteor
• meteorite
• doomsday
• comet Hale Bopp
• asteroid belt
• asteroids
• Solar System
• planets
• Oort Cloud
• debris of the solar system
• Kurdistan Planetarium
• Kurd
• Kurdistan
• NASA
• ESA

[Corri1596]

Thats just friggin awesome :D i learned something new...omg i judt realized it had history in it xD and i stayed awake!!! A miracle

[KurdstanPlanetarium]

@Corri1596 glad you learn something from this video, hope it sparks a life long interest in Astronomy :)

[Corri1596]

@KurdstanPlanetarium Ever since i was little, ive always loved the stars and well basically science :D it's something that i just rock at :D XD

[KurdstanPlanetarium]

@Corri1596 yes same with me, believe me the story of Halley's comet was one of those that inspired me and made me enjoy pursuing Astronomy !!

[tommyv166123]

lol my great grandmother has a small capsul of haleys comet pills that her older brother gave her from 1910 when haleys comet came, they said that the pills would make it so radiation and dust wont kill you, after all, everyone who took the pills and everyone who didnt take the pills lived anyways, although the people who took the pills later got very sick...

[KurdstanPlanetarium]

@tommyv166123 wow thats a very nice story, I didn't know about Halley's Pills, thank you :)

[MultiAwesomenessman]

I'll be 63 when this comes back -_-=

[KurdstanPlanetarium]

@MultiAwesomenessman Plz remember me when you look at Halley's Comet in the sky...

[thangacchi]

I was born the month after Halley last appeared. That means I'll be 76 when it appears again or probably dead. I would really love to see it though. Can someone tell me how long you get to see it for? For instance if I were to stand in a dark field where I had a clear and unobstructed view of the night sky, how fast or how long will I be able to see the commet for from the time it appears to the time it disappears from my view? Would it be a few seconds of it zooming across the sky or slower?

[bengativo6]

i was 10 years old when halley passed the earth in 1986 i remember it so well .when it was gone my grndpa said to me when that comet passes through earth you will be much like me.and old man telling your grandsons this is the second time watching this comet passing by.most people like my grandmas mother saw the it on 1910 .then she was able to see it for the second time after on 1986.most people can. see it twice.but most cant..people thatll be born on 2052 will be 10 and may be able later .

[123backflipman]

@TheThatOneGuy569 I have never heard of anyone as retarded as you

[omarmonnoo]

so u are Muslim too im also Muslim hi im omar from lahore im on utube but im 10

[omarmonnoo]

i hope i live till I've seen a comet

[Funtabulosity329]

I was named Halley after the comet :)