BREAKING ANOTHER ASTEROID INBOUND!!!!!! HEADS UP! MARCH 6TH ASTEROID TO PASS 0.2 LD TO EARTH!

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ANOTHER ASTEROID FLYBY: For the second time in as many days, an asteroid is flying through the Earth-Moon system. Yesterday, March 5th, 30-meter asteroid2014 DX110 passed just inside the orbit of the Moon–about 0.9 lunar distances away. Today, March 6th, 10-meter asteroid 2014 EC is coming even closer–only 0.2 lunar distances. Neither space rock poses an immediate threat to Earth. According to NASA, asteroids thread the Earth-Moon system more than 20 times a year.

FARSIDE CME: Hours ago, a bright coronal mass ejection (CME) flew over the sun’s southeastern limb. If such an event had occured years ago, we wouldn’t know if this CME was a threat because, as viewed from Earth orbit, CMEs heading toward and away from Earth look much the same. Today, however, all CMEs are observed from multiple points of view:

Dual coronagraph images from SOHO (stationed on the Earthside of the sun) and the STEREO-A probe (stationed on the farside) clearly show that this CME is a farside event. Radio emissions from shock waves at the leading edge of the blast suggest the cloud is racing away from Earth at approximately 1400 km/s (3 million mph). If it were racing in the opposite direction, we would have a significant geomagnetic storm in the offing. Instead, space weather around Earth is expected to remain calm for the rest of this week. Solar flare alerts: textvoice

Realtime Space Weather Photo Gallery

OLD SUNSPOT: The lifespan of a typical sunspot is two to three weeks. This one is about to turn three months:

Carried around by the sun’s 27-day rotation, AR1990 is making its third transit of the visible solar disk. In previous apparitions it was known as AR1944 and AR1967. Each time it has appeared, the sunspot has unleashed at least one strong flare, the most recent being the X4.9-class blockbuster of Feb. 25th. Since then, AR1990 has quieted and started showing signs of decay. Is this sunspot finally succumbing to time? Stay tuned.

Karzaman Ahmad of the Langkawi National Observatory in Malaysia took the above picture on March 3rd. He used an 11-inch telescope. The dimensions of the sunspot make it an easy target for such relatively small optics. Its dark core is about the size of Earth, and it is surrounded by boiling granules as large as the state of Texas. If you have a solar telescope, take a look. Solar flare alerts: textvoice

Realtime Space Weather Photo Gallery

HELIOPHYSICS SUMMER SCHOOL: Are you an undergraduate physics or astronomy instructor? There might be a seat waiting for you at the 2014Heliophysics Summer School. The program’s sponsor, UCAR, is looking for a number of qualified instructors to attend with most expenses paid. Apply here. The deadline has been extended to March 22nd.


Realtime Aurora Photo Gallery


Realtime Comet Photo Gallery


All Sky Fireball Network

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 Mar. 5, 2014, the network reported 5 fireballs.
(5 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 March 6, 2014 there were 1458 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:

Asteroid
Date(UT)
Miss Distance
Size
2014 DX110
Mar 5
0.9 LD
31 m
2014 EC
Mar 6
0.2 LD
10 m
2000 EE14
Mar 6
64.6 LD
1.8 km
2014 CU13
Mar 11
8 LD
190 m
2014 DU22
Mar 14
7.9 LD
60 m
2003 QQ47
Mar 26
49.9 LD
1.4 km
1995 SA
Apr 2
73.1 LD
1.6 km
2000 HD24
Apr 4
42.2 LD
1.3 km
2007 HB15
Apr 28
6.7 LD
12 m