You are viewing the page for Jul. 26, 2012
  Select another date:
<<back forward>>
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 342.4 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C1
1954 UT Jul26
24-hr: C1
1954 UT Jul26
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 26 Jul 12
None of these sunspots poses a threat for strong flares. Credit: SDO/HMI
Sunspot number: 66
What is the sunspot number?
Updated 25 Jul 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 25 Jul 2012


The Radio Sun
10.7 cm flux: 102 sfu
explanation | more data
Updated 25 Jul 2012

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: 4.3 nT
Bz: 2.8 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 25 Jul 12
A solar wind stream flowing from this coronal hole should reach Earth on July 28-30. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Jul 26 2200 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: 2012 Jul 26 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
25 %
MINOR
01 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
10 %
25 %
SEVERE
05 %
30 %
 
Thursday, Jul. 26, 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

LONG RANGE OUTLOOK: A stream of solar wind is heading for Earth, due to arrive on July 28-30. High-latitude sky watchers should be alert for auroras on those dates in case the impact sparks geomagnetic storms. Aurora alerts: text, voice.

PACHYDERMOSPHERE: Amateur astronomers around the world are monitoring a magnificent prominence arcing over the sun's western limb. Alan Friedman of Buffalo, New York, sees it as evidence of a "pachydermosphere--a little known region above the atmosphere of the sun where elephants roam." He drew his conclusion from this picture, which he took from his backyard observatory on July 25th:

Can't see the elephant? All it takes is a little helio-nephelococcygia.

This prominence--a magnetic filament filled with hot plasma--has been suspended above the stellar surface for days. A collapse might be overdue. Astronomers with solar telescopes are encouraged to monitor developments.

Update: A movie recorded by Michael Buxton of Ocean Beach, California, shows the pachyderm in motion.

Realtime Space Weather Photo Gallery

BUSY INTERSECTION: The International Space Station is not alone. A Russian supply ship (the Progress M-15M) is chasing the ISS in its orbit around Earth. Monika Landy-Gyebnar saw them both when they passed over Veszprem, Hungary, on the morning of July 24th:

"As the ISS emerged from the shadow of Earth I noticed a faint small dot following the space station. It was the Progress M-15M," says Landy-Gyebnar. "The Progress was well visible until it reached the dawn-bright sky in the east. Also present were Jupiter, Venus, the Pleiades and the Hyades--stunning! I could not stop looking at them even after the ISS disappeared into the rosy dawn clouds by the horizon. A short timelapse shows the ISS+Progress pair flying less than a degree away from Jupiter."

Another spaceship will be arriving soon. Japan's "Kounotori 3" cargo carrier, also known as the HTV-3, is due to join the ISS around 7 am CDT on Friday, July 27th, carrying almost 4 tons of supplies and equipment. After the HTV-3 docks on Friday, the Progress rocket will follow suit on Sunday. Until then, there is plenty to see. Check the Simple Satellite Tracker or your smartphone for flyby times.


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 July 26, 2012 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2002 AM31
Jul 22
13.7 LD
--
1.0 km
2012 OQ
Jul 24
7.7 LD
--
190 m
2012 OU1
Jul 25
8.5 LD
--
54 m
37655 Illapa
Aug 12
37 LD
--
1.2 km
2000 ET70
Aug 21
58.5 LD
--
1.1 km
1998 TU3
Aug 25
49.2 LD
--
4.9 km
2009 AV
Aug 26
62.8 LD
--
1.1 km
1998 UO1
Oct 4
60.1 LD
--
2.1 km
2005 GQ21
Oct 12
77 LD
--
1.0 km
1998 ST49
Oct 18
28.7 LD
--
1.3 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...
©2010 Spaceweather.com. All rights reserved. This site is penned daily by Dr. Tony Phillips.
©2013 Spaceweather.com. All rights reserved.