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New discovered PHA: 2011 GM44

6 Apr 2011, 15:04 UTC
New discovered PHA: 2011 GM44
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The Mpec circular 2011-G45 issued on April 06, 2011 announced the discovery of a new PHA asteroid officially designated 2011 GM44. This asteroid (~ magnitude 16) was discovered by R. H. McNaught through the 0.5-m Uppsala Schmidt telescope at Siding Spring, on images obtained on April 05.4, 2011. After posting on the Minor Planet Center's 'NEOCP' webpage, other CCD astrometrists have been able to follow-up the new object to define its orbit.According to the preliminay orbit, 2011 GM44 is an Aten type asteroid. This class of asteroids are defined by having semi-major axes of less than one astronomical unit (the distance from the Earth to the Sun). It is also flagged as a "Potentially Hazardous Asteroid". PHA are asteroids larger than approximately 100m that might have threatening close approaches to the Earth (they can come closer to Earth than 0.05 AU)2011 GM44 had a close approach with Earth on April 01, 2011 at rougly 0.0234AU.We have been able to follow it while still on the neocp using a the Tzec Maun Foundation scope: the Takahashi TOA-150 f/7.3 refractor + CCD (located near Moorook, Australia).Our confirming image (click on it for a bigger version):Below you can see an animation showing the ...

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