Halley's Comet - P1
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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
Comments
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in 2061 I will be 63
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I will be 84 or 85 years old in 2061
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I missit it in 1986 but my sisters and my mother saw it
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in 2061 i will be 55 year old
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Enjoy it guys , I'll be pushing dirt by then.
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I'm gonna be 59 yrs old in 2061
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old
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I would be like 66
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I was born in 1991, so if i am lucky i may get a chance to see it in 2061 age the age of 69
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I probably won't live long enough to see it in 2062. Sigh.
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Another freemason giving us false and made up shit
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awww can't we just adopt haley's comet as our moon? it's been in so many periods of our history!
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Ask Siri when Halleys commet will be visible
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nice
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i was too young back in 86, and I dont think Ill make to 2062
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2061 this comet will return.
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It's Haley's Comet not Halley.
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wtf is Halley's Comet? I distinctly remember learning about HALEY'S Comet. It has never been Halley.
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Said why you always running in place
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I will be 62
1m 59sLenght
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