11 metre asteroid 2010 AL30 to swing by the Earth on Wednesday

Wednesday, January 13, 2010

March 2009 was a big month for asteroids coming out of nowhere to graze the Earth, and there were a few more throughout the year as well. Looks like 2010 is starting off big with an asteroid called 2010 AL30 which will pass by at a distance just one third that from the Earth to the Moon. The trajectory of this asteroid can be seen here:



Compare just how close this is with other near-Earth approaches in the next few days (LD = Lunar Distance, the distance from Earth to the Moon):

Object
Name

Close
Approach
Date

Miss
Distance
(LD)

Estimated
Diameter*

H
(mag)

Relative
Velocity
(km/s)

(2010 AF3)
 2010-Jan-13
20.4
16 m - 35 m
26.2
7.10
(2010 AL30)
 2010-Jan-13
0.3
11 m - 24 m
27.0
9.95
(2010 AG30)
 2010-Jan-14
2.7
11 m - 24 m
27.0
18.64
(2009 BK2)
 2010-Jan-15
71.8
23 m - 52 m
25.3
5.37
(2009 DA43)
 2010-Jan-17
35.6
33 m - 73 m
24.5
4.72
(2010 AE30)
 2010-Jan-18
19.4
57 m - 130 m
23.4
11.35
(2008 XM)
 2010-Jan-18
30.8
290 m - 640 m
19.8
34.03
(2010 AG3)
 2010-Jan-19
8.9
7.9 m - 18 m
27.6
4.73

There seems to be an error in the chart on 2010 AL30 though as it should be as bright as a 14th magnitude star, not 26.2.

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