29 January 2009

Jan. 2009 Earth-asteroid encounters


Jan. 2009 Earth-asteroid encounters
Near-Earth Asteroids
Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.
On January 30, 2009 there were 1018 KNOWN potentially hazardous asteroids.


It is the UNKNOWN ones that we most likely will encounter up close...KEEP LOOKING!--d.r.

Jan. 2009 Earth-asteroid encounters:
Asteroid; Date(UT) ;Miss Distance ;Mag. ;Size
2008 YC29 ;Jan. 2 ;3.4 LD ;18 ;35 m
2008 YY32 ;Jan. 3 ;6.2 LD; 18; 40 m
2008 YG30; Jan. 4; 3.6 LD; 16; 50 m
2008 YV32; Jan. 9 ;2.7 LD ;19; 25 m
2008 YF29; Jan. 11; 9.7 LD ;18 ;65 m
2002 AO11; Jan. 15; 7.7 LD;17 ;120 m
1998 CS1 ; Jan. 17 ;11 LD ;12; 1.3 km
2009 BS5 ;Jan. 17 ;2.4 LD; 18 ;15 m
2009 BJ2 ;Jan. 21; 4.6 LD ;19 ;16 m
2009 BE ;Jan. 23 ;2.1 LD ;17 ;26 m
2009 BD ;Jan. 25; 1.8 LD ;19 ;10 m
2009 BO5 ;Jan. 25 ;6.7 LD ;20 ;19 m
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Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

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