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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 418.0 km/sec
density: 3.5 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C1
2105 UT Jun11
24-hr: C1
2105 UT Jun11
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 11 Jun 12
Sunspot 1504 is crackling with impulsive M-class solar flares. Credit: SDO/HMI
Sunspot number: 127
What is the sunspot number?
Updated 10 Jun 2012

Spotless Days
Current Stretch: 0 days
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
Since 2004: 821 days
Typical Solar Min: 486 days

Updated 10 Jun 2012


The Radio Sun
10.7 cm flux: 128 sfu
explanation | more data
Updated 10 Jun 2012

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 10.1 nT
Bz: 9.2 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 11 Jun 12
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Jun 11 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
55 %
55 %
CLASS X
05 %
05 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2012 Jun 11 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
25 %
MINOR
01 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
25 %
MINOR
20 %
20 %
SEVERE
10 %
10 %
 
Monday, Jun. 11, 2012
What's up in space
 

Listen to radar echoes from satellites and meteors, live on listener-supported Space Weather Radio.

 
Spaceweather Radio is on the air

CHANCE OF MAGNETIC STORMS: NOAA forecasters estimate a 30% chance of polar geomagnetic storms during the next 48 hours as a pair of CMEs pass by Earth, possibly delivering glancing blows to our magnetic field. Magnetic storm alerts: text, voice.

SHAPE-SHIFTING SUNSPOT: As it pops and crackles with low level solar flares, sunspot AR1504 is rapidly evolving. During the past 24 hours the active region has shape-shifted from an irregular dumbbell into a dark ring of magnetism wide enough to circumscribe a half-dozen planet Earths:

NOAA forecasters estimate a 55% chance of M-class solar flares today as the sunspot's magnetic field shifts and destabilizes. Eruptions later this week could be geoeffective as the sunspot turns to face Earth. Stay tuned. Solar flare alerts: text, voice.

TRIPLE FLYBY: As the solstice approaches on June 20th, the International Space Station is spending some extra time in the sun. Ironically, this means you're more likely to see it in the night sky. Mark Humpage photographed three ISS flybys over his home in Lutterworth UK on June 10th:

"There were actually four flybys this evening at 2207, 2343, 0119 and 0256 hrs, however, the first was clouded out," says Humpage. "I added a few bursts of flash just before the first flyby to light up the garden and then left the camera running all night. The following morning I extracted all the images and stacked them to produce the final composite."

Readers, now is a great time to look for the behemoth spacecraft glistening in sunlight among the stars. Flyby times are available on your smartphone or from Space Weather's Simple Satellite Tracker.


  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 June 11, 2012 there were 1311 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2012 LJ
Jun 10
1.6 LD
--
33 m
2012 LT
Jun 11
5.2 LD
--
28 m
2002 AC
Jun 16
62.2 LD
--
1.2 km
1999 BJ8
Jun 16
68.8 LD
--
1.1 km
2005 GO21
Jun 21
17.1 LD
--
2.2 km
2012 LU
Jun 23
5.7 LD
--
47 m
2003 KU2
Jul 15
40.2 LD
--
1.2 km
2004 EW9
Jul 16
46.8 LD
--
2.1 km
2002 AM31
Jul 22
13.7 LD
--
1.0 km
37655 Illapa
Aug 12
37 LD
--
1.2 km
2000 ET70
Aug 21
58.5 LD
--
1.0 km
1998 TU3
Aug 25
49.2 LD
--
4.9 km
2009 AV
Aug 26
62.8 LD
--
1.1 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.
  Essential web links
NOAA Space Weather Prediction Center
  The official U.S. government space weather bureau
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
Solar Dynamics Observatory
  Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Heliophysics
  the underlying science of space weather
Trade Show Displays
   
  more links...
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