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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 465.0 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B2
1915 UT Sep23
24-hr: B2
0050 UT Sep23
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 23 Sept 10
Sunspot 1109 poses a continued threat for C-class solar flares. Credit: SDO/HMI. Resolutions: 4096, 1024, 512
Sunspot number: 26
What is the sunspot number?
Updated 22 Sep 2010

Spotless Days
Current Stretch: 0 days
2010 total: 41 days (16%)
2009 total: 260 days (71%)
Since 2004: 809 days
Typical Solar Min: 486 days
explanation | more info
Updated 22 Sep 2010


The Radio Sun
10.7 cm flux: 85 sfu
explanation | more data
Updated 22 Sep 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 8.5 nT
Bz: 2.3 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 23 Sept 10
A solar wind stream flowing from the indicated coronal hole should reach Earth during the next 24-48 hours. Credit: SDO/AIA
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Sep 23 2201 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
05 %
05 %
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: 2010 Sep 23 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
15 %
MINOR
05 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
30 %
20 %
MINOR
10 %
05 %
SEVERE
01 %
01 %
 
Thursday, Sep. 23, 2010
What's up in space
 

AURORA ALERTS: Did you miss the Northern Lights? Next time get a wake-up call from Space Weather PHONE

 

AURORA WATCH: High-latitude sky watchers should be alert for auroras. A solar wind stream is heading for Earth, and NOAA forecasters estimate a 40% chance of geomagnetic activitty when it arrives during the next 24-48 hours.

AUTUMN SUNRISE: Today in Veszprem, Hungary, photographer Monika Landy-Gyebnar woke up early and went outside at dawn to photograph the first sunrise of autumn. "The distant valley fog was painted pink and orange by the colors of the rising sun," she says. "Later, when I was looking closely at the pictures, I also found a couple of sunspots."

Sunspots 1108 and 1109 have grown so large, they can now be seen without the amplification of a solar telescope. NOAA forecasters estimate a 10% chance of an M-flare from one of these behemoths in the next 24 hours, and that could lead to fall colors of a different kind--Northern Lights. "Autumn is my favourite season and it seems to be getting off to a good start!" says Landy-Gyebnar.

AUTUMN MOONRISE: Last night's full moon was the "Harvest Moon," the first full moon of northern autumn. It arrived on the very night of the autumnal equinox, rising at sunset to chase the summer sun away:

"The sight of this Super Harvest Moon beaming through the trees, inflated to gargantuan proportions by the Moon illusion, made me feel like howling," says photographer Vasilis Wooseas of Greece. Onlookers elsewhere felt the same way. Browse the links below for examples.

more images: from Doug Zubenel of De Soto, Kansas; from Jan Lameer at Amsterdam harbour, the Netherlands; from Dave Lengyel of Brighton township, Ohio; from Monika Landy-Gyebnar of Veszprem, Hungary; from Malcolm Park of Columbus, Ontario; from Bob Collins of Ormond Beach, FL; from Dusty Hicks of Nowata , Oklahoma; from Adrian New of San Antonio, Texas; from Robert Schalck of North Bend, Oregon


Sept. 2010 Northern Lights Gallery
[previous Septembers: 2009, 2008, 2007, 2006, 2005, 2004, 2002, 2001, 2000]

  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 September 23, 2010 there were 1145 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2010 RF12
Sep 8
0.2 LD
28
9 m
2010 RJ53
Sep 9
8 LD
24
69 m
2010 RS80
Sep 9
2.2 LD
26
23 m
2010 RM82
Sep 10
2.2 LD
26
31 m
2009 SH2
Sep 30
7.1 LD
25
45 m
1998 UO1
Oct 1
32.1 LD
17
2.1 km
2005 GE59
Oct 1
77 LD
18
1.1 km
2001 WN5
Oct 10
41.8 LD
18
1.0 km
1999 VO6
Oct 14
34.3 LD
17
1.8 km
1998 TU3
Oct 17
69.1 LD
15
5.3 km
1998 MQ
Oct 23
77.7 LD
17
1.9 km
2007 RU17
Oct 29
40.6 LD
18
1.0 km
2003 UV11
Oct 30
5 LD
19
595 m
3838 Epona
Nov 7
76.8 LD
16
3.4 km
2005 QY151
Nov 16
77.7 LD
18
1.3 km
2008 KT
Nov 23
5.6 LD
28
10 m
2002 EZ16
Nov 30
73.9 LD
18
1.0 km
2000 JH5
Dec 7
47 LD
17
1.5 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
Current Solar Images
  from the National Solar Data Analysis Center
Science Central
   
  more links...
 
 
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