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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 354.5 km/sec
density: 4.1 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: C1
1839 UT Oct23
24-hr: X1
0322 UT Oct23
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 23 Oct 12
Sunspot 1598 poses a threat for strong X-class solar flares. Credit: SDO/HMI
Sunspot number: 86
What is the sunspot number?
Updated 23 Oct 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

Update 23 Oct 2012


The Radio Sun
10.7 cm flux: 144 sfu
explanation | more data
Updated 23 Oct 2012

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: 2.8 nT
Bz: 2.2 nT north
explanation | more data
Updated: Today at 2012 UT
Coronal Holes: 23 Oct 12
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Oct 23 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
75 %
75 %
CLASS X
20 %
20 %
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 Oct 23 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
15 %
SEVERE
05 %
05 %
 
Tuesday, Oct. 23, 2012
What's up in space
 

Thirty-five new items have just been added to our Meteorite Jewelry collection. Browse the Space Weather Store for something out of this world.

 
Meteorite jewelry

X-FLARE: New sunspot AR1598 has erupted again. On Oct. 23rd at 0322 UT, Earth orbiting satellites detected a strong X1-class solar flare. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:

Radiation from the flare created waves of ionization in the upper atmosphere over Asia and Australia (the daylit side of Earth) and possibly HF radio blackouts at high latitudes. The blast did not, however, produce a significant coronal mass ejection (CME). No auroras are expected to result from this event.

This is the 4th significant flare from AR1598 since it emerged over the southeastern limb only three days ago. This means more flares are probably in the offing, and they will become increasingly Earth-directed as the sunspot turns toward our planet in the days ahead. Stay tuned for updates. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

ORIONID METEOR UPDATE: Most observers would say that the 2012 Orionid meteor shower was underwhelming. Even during the peak on Oct 21st meteor rates never climbed much above 20 per hour. Sometimes, however, one is enough:

"This was a very bright Orionid fireball," says photographer Maciek Myszkiewicz. "It was brighter than the full Moon."

Orionid meteors are pieces of Halley's Comet, which has left behind a stream of dusty debris in the inner solar system. Earth hits the stream twice a year producing a pair of meteor showers, the eta Aquarids in May and the Orionids in October. According to international meteor counts, Earth is still in the outskirts of the Orionid portion of the stream. Enthusiasts should therefore remain alert for pieces of Halley's Comet in the pre-dawn sky until further notice. [gallery] [video] [meteor radar]

Realtime Meteor Photo Gallery


Realtime Aurora Photo Gallery


Realtime Noctilucent Cloud Photo Gallery
[previous years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011]

  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 23, 2012 there were 1340 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2012 UE
Oct 19
2 LD
--
9 m
2012 TP231
Oct 22
5.8 LD
--
44 m
2012 UF34
Oct 22
2.8 LD
--
47 m
2012 US18
Oct 22
1.6 LD
--
8 m
1991 VE
Oct 26
34 LD
--
1.1 km
2012 UW9
Oct 29
9.4 LD
--
31 m
2001 CV26
Oct 30
68 LD
--
2.4 km
2007 PA8
Nov 5
16.8 LD
--
2.4 km
2012 UY68
Nov 14
6.7 LD
--
42 m
2010 JK1
Nov 25
9.3 LD
--
56 m
2009 LS
Nov 28
55.2 LD
--
1.1 km
2009 BS5
Dec 11
8.4 LD
--
15 m
4179 Toutatis
Dec 12
18 LD
--
2.7 km
2003 SD220
Dec 23
59.8 LD
--
1.8 km
1998 WT24
Dec 23
69.2 LD
--
1.1 km
2003 UC20
Dec 29
25.7 LD
--
1.0 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
Space Weather Alerts
   
  more links...
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