21 FireBall Reports/Entering ISON's Debris

Saturday, January 11, 2014

21 FireBall Reports/Entering ISON's Debris

Published on Jan 11, 2014

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

.....

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.
.....