نظام آخر إنذار لارتطام كويكب بالأرض

نظام آخر إنذار لارتطام كويكب بالأرض (Asteroid Terrestrial-impact Last Alert System؛ ATLAS؛ رموز المراصد T05 و T08) هو مسح فلكي روبوتي ونظام إنذار مبكر لرصد الأجرام الصغرى القريبة من الأرض قبل أسابيع أو أيام من they ارتطامها بالأرض. وهو ممول من ناسا، وطوّره ويشغـِّله معهد الفلك في جامعة هاوائي، the system's current two 0.5-meter telescopes are located at Haleakala (ATLAS-HKO) and Mauna Loa (ATLAS-MLO) observatories, on two of the Hawaiian Islands and 160 km apart. Each of the two telescopes surveys one quarter of the whole observable sky four times per clear night, for a four-fold coverage of the observable sky every two clear nights.[1] ATLAS began observations in 2015 and its two-telescopes version is fully operational since 2017. The project has obtained NASA funding for two additional telescopes in the Southern hemisphere and it will provide nightly four-fold coverage of the observable sky once they are operational.[2]

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استعراض

Annually discovered NEAs by survey since 1995
Large NEAs (at least 1 km in diameter) discovered each year


اكتشافات

  • AT2018cow, possibly Supernova 2018cow on 2018-06-16.
  • 2018 AH, largest asteroid to pass so close to Earth since 1972 on 2018-06-02.
  • A106fgF, unconfirmed potential impactor on 2018-01-22.
  • 2018 RC, near earth asteroid on 2018-09-03 (notable because it was discovered more than a day prior to closest approach on 2018-09-09).[3]

انظر أيضاً

الهامش

  1. ^ Tonry; et al. (28 March 2018). "ATLAS: A High-Cadence All-Sky Survey System". Publications of the Astronomical Society of the Pacific. 130 (988): 064505. arXiv:1802.00879. Bibcode:2018PASP..130f4505T. doi:10.1088/1538-3873/aabadf. Explicit use of et al. in: |author= (help) Accessed 2018-04-14.
  2. ^ Watson, Traci (2018-08-14). "Project that spots city-killing asteroids expands to Southern Hemisphere". nature international journal of science. Springer Nature Limited. Retrieved 17 October 2018.
  3. ^ قالب:MPC

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