(242450) 2004 QY2


Jpldata::title    Format::asteroid    Group::sentry    Removed::orbit    Category::schmidt    Uppsala::years


(242450) 2004 QY2 is a large near-Earth asteroid and potentially hazardous object.<ref name=jpldata/> It has a well determined orbit with an observation arc of 7 years and an uncertainty parameter of 0.<ref name=jpldata/> It was discovered on 20 August 2004 by the Siding Spring Survey at an apparent magnitude of 16.5 using the {{safesubst:#invoke:convert|convert}} Uppsala Southern Schmidt Telescope.<ref name="MPEC2004-Q27"/>

Based on an absolute magnitude of 15,<ref name="jpldata"/> the asteroid has an estimated diameter of 3.5 to 7.7 km.<ref name=EARN/> 2004 QY2 is one of the largest potentially hazardous asteroids (PHA) discovered.<ref name="jpl-search"/> As of 2013 it has the brightest absolute magnitude of any PHA since its discovery.<ref name="jpl-search"/> On 29 July 2012 it passed Earth at a distance of {{safesubst:#invoke:convert|convert}}.<ref name=jpl-close/>

Given the estimated size of roughly 5km, 2004 QY2 is one of the largest objects to appear on the Sentry Risk Table.<ref name="hohmanntransfer040822"/> It was removed from the Sentry Risk Table on 25 August 2004.<ref name="removed"/>

(242450) 2004 QY2 sections
Intro   References    External links   

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