BPEarthWatch BPEarthWatch

Published on Jan 11, 2014

Solar,Quake,Volcano and Weather Links http://www.BpearthWatch.Com
http://www.amsmeteors.org/fireball_ev…
http://lunarmeteoritehunters.blogspot…

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Space Weather

All Sky Fireball Network

by Dr. Tony Phillips.

 

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Jan. 11, 2014, the network reported 14 fireballs.
(14 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

 

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 12, 2014 there were 1450 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid
Date(UT)
Miss Distance
Size
2014 AD16
Jan 8
1.5 LD
15 m
2014 AE29
Jan 9
4.1 LD
15 m
2014 AW32
Jan 10
0.5 LD
15 m
2014 AZ32
Jan 11
6.2 LD
28 m
2007 SJ
Jan 21
18.9 LD
1.9 km
2012 BX34
Jan 28
9.6 LD
13 m
2006 DP14
Feb 10
6.2 LD
730 m
2000 EM26
Feb 18
8.8 LD
195 m
2000 EE14
Mar 6
64.6 LD
1.8 km
2003 QQ47
Mar 26
49.9 LD
1.4 km

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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