99942 Apophis

99942 Apophis (pengucapan: /əˈpoʊfɪs/, adalah asteroid dekat Bumi yang menyebabkan kecemasan singkat pada Desember 2004 karena pengamatan menandai bahwa asteroid ini akan menabrak Bumi pada tahun 2029. Beberapa pengamatan memberikan prediksi yang menghapuskan kemungkinan menabraknya asteroid ini ke Bumi atau Bulan tahun 2029, namun, tetap terdapat kemungkinan bahwa selama pertemuan dekat dengan Bumi tahun 2029, Apophis akan melewati lubang kunci gravitasi, wilayah di angkasa yang tidak lebih dari 400 meter, yang dapat menyebabkan tubrukan di masa depan pada 13 April 2036. Kemungkinan ini membuat asteroid ini masuk kedalam skala 1 dalam skala Torino sampai Agustus 2006. Asteroid ini memecahkan rekor skala tertinggi di skala Torino, sebelum diturunkan menjadi skala 4.^[1]

Daftar pustaka

Cooke, Bill. (2006) Fatal attraction. Astronomy, May 2006, 46-51.
Fountain, Henry (27 November 2005). "Saving Earth from the next heavenly blow". New Straits Times, p. F24.

Pranala luar

Apophis Orbital Prediction Page at NASA JPL
2004 MN₄ Impact Risk (NASA JPL)
2004 MN₄ page and 2004 MN₄ impactor table from NEODyS.
May we deflect asteroids? (Advanced Concepts Team)
Near-Earth Asteroid 2004 MN₄ Reaches Highest Score To Date On Hazard Scale (JPL)
Possibility of an Earth Impact in 2029 Ruled Out for Asteroid 2004 MN₄ (JPL)
Radar Observations Refine the Future Motion of Asteroid 2004 MN₄ (JPL)
Animation explaining how impact risk is determined from [1]
Whew! Asteroid Won't Hit Earth in 2029, Scientists Now Say (SPACE.com)
Asteroid Watch: Odds of 2029 Collision Stuck at 1-in-40 (SPACE.com)
Worrisome Asteroid Underscores Planetary Defense Mission (SPACE.com)
Schoolboy's asteroid-strike sums are wrong
Boy corrects Nasa's asteroid figures
Astronauts propose 'tractor-pull' of asteroid
Closest Flyby of Large Asteroid to be Naked-Eye Visible (2029 approach)
Asteroid 2004 MN₄: A Really Near Miss! (Sky and Telescope)
An asteroid, headed our way (Christian Science Monitor, on efforts to deflect the asteroid if needed)
Astronauts want plan to prevent cosmic collision
Probabilistic Design of a Planetary Defense System
Chandler, David (October 13, 2007). "Asteroid is 'practice case' for potential hazards". MIT. Diakses tanggal 2007-10-16.

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^ Don Yeomans, Steve Chesley and Paul Chodas (December 23, 2004). "Near-Earth Asteroid 2004 MN4 Reaches Highest Score To Date On Hazard Scale". NASA's Near Earth Object Program Office. Diakses tanggal 2007-08-16. Today's impact monitoring results indicate that the impact probability for April 13, 2029 has risen to about 1.6%, which for an object of this size corresponds to a rating of 4 on the ten-point Torino Scale.

[nasanews146-1] Don Yeomans, Steve Chesley and Paul Chodas (December 23, 2004). "Near-Earth Asteroid 2004 MN4 Reaches Highest Score To Date On Hazard Scale". NASA's Near Earth Object Program Office. Diakses tanggal 2007-08-16. Today's impact monitoring results indicate that the impact probability for April 13, 2029 has risen to about 1.6%, which for an object of this size corresponds to a rating of 4 on the ten-point Torino Scale.

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