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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 361.0 km/sec
density: 0.0 protons/cm3
explanation | more data
Updated: Today at 2342 UT
X-ray Solar Flares
6-hr max: C2
1850 UT Oct13
24-hr: C2
1223 UT Oct13
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 13 Oct 11
Solar activity remains low, but the quiet is unlikely to persist with so many sunspots turning toward Earth. Credit: SDO/HMI
Sunspot number: 149
What is the sunspot number?
Updated 12 Oct 2011

Spotless Days
Current Stretch: 0 days
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 12 Oct 2011


The Radio Sun
10.7 cm flux: 134 sfu
explanation | more data
Updated 12 Oct 2011

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 6.8 nT
Bz: 3.3 nT north
explanation | more data
Updated: Today at 2344 UT
Coronal Holes: 13 Oct 11
A solar wind stream flowing from the indicated coronal hole should reach Earth on Oct. 15-16. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2011 Oct 13 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
30 %
30 %
CLASS X
01 %
01 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2011 Oct 13 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
30 %
MINOR
01 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
40 %
MINOR
01 %
20 %
SEVERE
01 %
05 %
 
Thursday, Oct. 13, 2011
What's up in space
 

They came from outer space--and you can have one! Genuine meteorites are now on sale in the Space Weather Store.

 
Own your own meteorite

CALM BEFORE THE STORM? Solar activity remains generally low, but the quiet is unlikely to persist with so many sunspots turning toward Earth. NOAA forecaters estimate a 30% chance of M-class solar flares during the next 24 hours. Solar flare alerts: text, voice.

MOON AND JUPITER: If it's dark where you live, go outside and look up. The nearly-full Moon and Jupiter have gathered together only a few degrees apart. Here, Shahrin Ahmad points out the bright conjunction over Kuala Lumpur, Malaysia:

"It's always fascinating to compare the size of the objects in the universe," comments Ahmad. "My finger can easily cover the Moon and Jupiter, as well as the nearby mosque's minaret. But it is all insignificant if we realize the true size of these celestial objects!"

Readers in North America, where night is falling now, should look for the Moon and Jupiter rising in the east after sunset: sky map

more images: from C B Devgun SPACE of New Delhi, India; from Paulo Casquinha of Setubal, Portugal; from P-M Hedén of Vallentuna, Sweden; from Jim Tegerdine of Marysville, Washington; from Daisuke Tomiyasu of Higashinada, Kobe, Japan

SOLAR ERUPTION: A teepee-shaped magnetic prominence that solar astronomers had been monitoring for days erupted this morning. NASA's Solar Dynamics Observatory recorded the action:

Although much of the prominence fell back to the sun, some of the structure did fly into space, producing a coronal mass ejection. SOHO coronagraphs of the CME show that it is propagating up and out of the plane of the solar system: movie. Probably no planet will be hit by the expanding cloud.

more images: from Alan Friedman of Buffalo, NY; from Jesús Carmona de Argila of Madrid (SPAIN); from Rogerio Marcon of Campinas SP Brasil; from Karzaman Ahmad of Langkawi National Observatory; from Paul Haese of Glenalta, South Australia; from Robert Arnold of Isle of Skye, Scotland; from Monty Leventhal OAM of Sydney. Australia


September 2011 Aurora Gallery
[previous Septembers: 2010, 2009, 2008, 2007, 2006, 2005, 2004]

  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 October 13, 2011 there were 1250 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2011 TB4
Oct 10
5.2 LD
--
35 m
2011 SE97
Oct 12
7.9 LD
--
50 m
2011 SS25
Oct 12
69.3 LD
--
1.0 km
2000 OJ8
Oct 13
49.8 LD
--
2.3 km
2009 TM8
Oct 17
0.9 LD
--
8 m
2011 FZ2
Nov 7
75.9 LD
--
1.6 km
2005 YU55
Nov 8
0.8 LD
--
175 m
1994 CK1
Nov 16
68.8 LD
--
1.5 km
1996 FG3
Nov 23
39.5 LD
--
1.1 km
2003 WM7
Dec 9
47.6 LD
--
1.5 km
1999 XP35
Dec 20
77.5 LD
--
1.0 km
2000 YA
Dec 26
2.9 LD
--
80 m
2011 SL102
Dec 28
75.9 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
Science Central
 
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