Observing

Watch asteroid 2014 JO25 brush by Earth on 19 April

17 April 2017 Ade Ashford

A peanut-shaped asteroid almost a mile long known as 2014 JO25 passes within 5 lunar distances of Earth on 19 April — the closest any known space rock of this size has approached our planet since September 2004. We show you how to find this fast-moving potentially hazardous asteroid in small telescopes during the UK night of 19-20 April.

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Asteroid 2013 TX68 won’t hit Earth, but will get close

2 March 2016 Astronomy Now

Discovered by the Catalina Sky Survey on 6 October 2013 a week before its last close flyby of Earth, 30-metre-wide asteroid 2013 TX68 was initially thought to pass by Earth again on 5 March 2016. Additional observations of the body have now been obtained, refining its orbital path and moving the date of the asteroid’s close brush with our planet to 8 March.

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NASA office to coordinate asteroid detection and hazard mitigation

12 January 2016 Astronomy Now

NASA has formalised its ongoing program for detecting and tracking near-Earth objects (NEOs) as the Planetary Defense Coordination Office (PDCO). The office will be responsible for supervision of all NASA-funded projects to find and characterise asteroids and comets that pass near Earth. It will also take a leading role in coordinating efforts in response to any potential impact threats.

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Peanut-shaped near-Earth asteroid 1999 JD6 imaged by radar

3 August 2015 Astronomy Now

NASA scientists have used two giant, Earth-based radio telescopes to bounce radar signals off a passing asteroid and produce images of the peanut-shaped body as it approached close to Earth on 25 July. The asteroid appears to be a contact binary — an asteroid with two lobes that are stuck together.