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(192642) 1999 RD32

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Jpldata::convert    Asteroid::title    Binary::category    Object::busch    Earth::contact    Radar::neodys

{{#invoke:Infobox|infobox}} (192642) 1999 RD32, provisionally known as 1999 RD32, is a near-Earth asteroid and potentially hazardous object.<ref name=jpldata/> It was discovered on 8 September 1999 by Lincoln Near-Earth Asteroid Research (LINEAR) at an apparent magnitude of 18 using a {{safesubst:#invoke:convert|convert}} reflecting telescope.<ref name="MPEC1999-R32"/>

With two precovery images from January 1995,<ref name="mpc"/> the asteroid has a very well determined orbit with an observation arc of 17 years.<ref name="jpldata"/> It is known that 1999 RD32 passed {{safesubst:#invoke:convert|convert}} from Earth on 27 August 1969.<ref name=jpl-close/> During the 1969 close approach the asteroid reached about apparent magnitude 8.8.<ref name="NEODyS1969"/> The similarly-sized 4179 Toutatis also reached that brightness in September 2004. 1999 RD32 passed less than {{safesubst:#invoke:convert|convert}} from asteroid 29 Amphitrite on 17 January 1939.<ref name=jpldata/>

Arecibo radar observations on 5–6 March 2012 showed that 1999 RD32 is approximately {{safesubst:#invoke:convert|convert}} in diameter<ref name="Goldstone-planning"/> and has an albedo of only a few percent.<ref name="Goldstone-planning"/> The two visible lobes suggest that 1999 RD32 is a tight binary asteroid or contact binary.<ref name="Goldstone-planning"/> About 10–15% of near-Earth asteroids larger than 200 meters are expected to be contact binary asteroids with two lobes in mutual contact.<ref name="Busch2012"/>

Close-approaches to Earth<ref name=jpl-close/>
Date Distance from Earth
1969-08-27 convert}}
2012-03-14 convert}}
2042-03-11 convert}}
2046-09-04 convert}}

(192642) 1999 RD32 sections
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