Buntalang Halley
Mula sa Tagalog na Wikipedia, ang malayang ensiklopedya
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Pagkakatuklas
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| Natuklasan ni | prehistoric (observation); Edmond Halley (recognition of periodicity) |
| Epoch 2449400.5 (17 February 1994) |
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| Aphelion | 35.1 AU (9 December 2023)[2] |
| Perihelion | 0.586 AU last perihelion: 9 February 1986 next perihelion: 28 July 2061[2] |
| Semi-major axis | 17.8 AU |
| Eccentricity | 0.967 |
| Orbital period | 75.3 a[1] |
| Inclination | 162.3° |
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Physical characteristics
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| Dimensions | 15×8 km,[3] 11 km (mean)[1] |
| Mass | 2.2×1014 kg[4] |
| Mean density | 0.6[5] (estimates range from 0.2 to 1.5 g/cm3[6]) |
| Sidereal rotation period |
2.2 d (52.8 h) (?)[7] |
| Albedo | 0.04[8] |
| Apparent magnitude | 28.2 (in 2003)[9] |
Ang Kometang Halley (opisyal na ipinangalanan bilang 1P/Halley)[1] ay ang pinaka-kilalang sa mga maikling-periyod na mga buntala at nakikita sa Daigdig kada-75 o 76 na taon. [1][10]
[baguhin] Mga sanggunian
- ↑ Maling banggit (Hindi tamang
<ref>tag; walang binigay na teksto para sa refs na may pangalangjpldata); $2 - ↑ Maling banggit (Hindi tamang
<ref>tag; walang binigay na teksto para sa refs na may pangalanghorizons); $2 - ↑ Maling banggit (Hindi tamang
<ref>tag; walang binigay na teksto para sa refs na may pangalangLearn); $2 - ↑ Maling banggit (Hindi tamang
<ref>tag; walang binigay na teksto para sa refs na may pangalangmass); $2 - ↑ Maling banggit (Hindi tamang
<ref>tag; walang binigay na teksto para sa refs na may pangalangdensity); $2 - ↑ S. J. Peale (1989). "On the density of Halley's comet". Icarus 82 (1): 36–49. doi:10.1016/0019-1035(89)90021-3. "densities obtained by this procedure are in reasonable agreement with intuitive expectations of densities near 1 g/cm3, the uncertainties in several parameters and assumptions expand the error bars so far as to make the constraints on the density uniformative ... suggestion that cometary nuclei tend to by very fluffy, ... should not yet be adopted as a paradigm of cometary physics."
- ↑ S. J. Peale, J. J. Lissauer (1989). "Rotation of Halley's Comet". Icarus 79 (2): 396–430. doi:10.1016/0019-1035(89)90085-7.
- ↑ R. R. Britt (29 November 2001). "Comet Borrelly Puzzle: Darkest Object in the Solar System". Space.com. http://www.space.com/scienceastronomy/solarsystem/borrelly_dark_011129.html. Nakuha noong 16 December 2008.
- ↑ Maling banggit (Hindi tamang
<ref>tag; walang binigay na teksto para sa refs na may pangalangESO2003); $2 - ↑ G. W. Kronk. "1P/Halley". cometography.com. http://cometography.com/pcomets/001p.html. Nakuha noong 13 October 2008.
