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#2441
2012-12-11, 01:00 PM
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   Wednesday 12 December 2012 Asteroid 4179 Toutatis Earth Flyby at 0.046au Asteroid 4179 Toutatis makes closest approach at 0.046 au = about 18.0 times distance to the moon (=ld) This Asteroid will makes its next closest approach at 12-29-2016 It has a cycle of about 4 years and 18 days A potentially hazardous object (PHO) is an asteroid (PHA) or comet (PHC) with an orbit such that it has the potential to make close approaches to the Earth and a size large enough to cause significant regional damage in the event of impact. These objects are monitored by NASA with contributions from others including amateurs. The reason they can become hazardous is that their trajectory can variate due to gravitional fields from Planets or Stars (ore other objects). Overall the chance of a potentially hazardous event due to these objects is about once in 10,000 years.
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#2442
2012-12-11, 01:06 PM
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اخوي تركي مشاركة الاخيرة تحذيرية الله يكفينا شر المصايب تحدد التاريخ ياليت تحدد لنا المكان
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#2443
2012-12-11, 01:07 PM
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مساء الخير جميعا
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#2444
2012-12-11, 01:10 PM
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اقتباس:
حفر الباطن شرحك سرى
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#2445
2012-12-11, 01:11 PM
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الرياض العاصمه برياح غربيه مثير ه للغبار
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#2446
2012-12-11, 01:14 PM
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#2447
2012-12-11, 01:16 PM
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نحاول نلقط صورةةة بعد قليل الين يرتفع السحاب
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#2448
2012-12-11, 01:19 PM
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اخي ابو جركل اشوف المزون الركامية جنوب عنا بعيد جدااااا ولكن شكلها سحب غير ممطر والله واعلم
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#2449
2012-12-11, 01:19 PM
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يأسبحان الله الغيوم قريبه جدا اللهم اغثنا
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#2450
2012-12-11, 01:20 PM
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مساء الخيرات الله يرحمنا برحمته ,شكل البرد خلاص بداء علينا في الرياض مع هالرياح الشماليه
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العرض العادي
