is a kilometer-sized near-Earth asteroid and potentially hazardous asteroid of the Apollo group. It was discovered by LINEAR on 13 January 1999.
On 7 August 2027, this asteroid will pass at about of the Earth's center. During the close approach, it is expected to peak at about apparent magnitude 7.3, and will be visible in binoculars.
has a well-determined orbit with an observation arc of 65 years. It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955. When astronomers had an observation arc of the object of 123 days, computations gave a 1 in 10 million chance it would return on an impact trajectory in 2039.
On 7 August 1946, the asteroid passed from Earth and then from the Moon.
+Position uncertainty and increasing divergence Date JPL SBDBnominal geocentricdistance (AU) uncertaintyregion(3-sigma)1946-08-07 ±900 km2027-08-07 ±160 km2076-02-04 ±154 thousand km2198-02-01 ±800 thousand km
+2027 Moon/Earth approach Date & Time Approachto Nominal distance2027-Aug-07 06:48 Moon 2027-Aug-07 07:11 Earth
See also
Asteroid impact prediction Earth-grazing fireball List of asteroid close approaches to Earth
References assume radius of 0.650 km; volume of a sphere * assume density of 2.6g/cm3 (though it could be a loose rubble pile) yields a mass of and an escape velocity of 2.82 km/h.
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