You are viewing the page for Sep. 22, 2010
  Select another date:
<<back forward>>
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 303.3 km/sec
density: 1.9 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B2
1755 UT Sep22
24-hr: B8
0505 UT Sep22
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 22 Sept 10
Emerging sunspot 1109 poses a greater than 40% chance of C-class solar flares during the next 24 hours. Credit: SDO/HMI. Resolutions: 4096, 1024, 512
Sunspot number: 37
What is the sunspot number?
Updated 21 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 21 Sep 2010


The Radio Sun
10.7 cm flux: 85 sfu
explanation | more data
Updated 21 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= 1
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.5 nT
Bz: 0.4 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 22 Sept 10
A solar wind stream flowing from the indicated coronal hole should reach Earth on Sept. 22nd or 23rd. Credit: SDO/AIA
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Sep 22 2201 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
10 %
10 %
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 22 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
35 %
35 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
40 %
40 %
MINOR
10 %
10 %
SEVERE
01 %
01 %
 
Wednesday, Sep. 22, 2010
What's up in space
 

iPHONE VS ANDROID! Actually, it doesn't matter which phone you carry. Our cool, new app turns both smartphones into field-tested satellite trackers. Learn more.

 

WATCH OUT FOR THE SUPER HARVEST MOON: For the first time in almost 20 years, northern autumn is beginning on the night of a full Moon. The coincidence sets the stage for a "Super Harvest Moon" and a must-see sky show to mark the change of seasons. Get the full story from Science@NASA.

GLOBAL ERUPTION: This morning between 0230 UT and 0600 UT, the northern hemisphere of the sun erupted in a tumult of activity. At least two dark magnetic filaments became unstable and lifted off the stellar surface, a B8-class solar flare flashed from sunspot 1109, and a bright coronal mass ejection billowed into space (SOHO movie). Click on the image to play a time-lapse movie from Solar Dynamics Observatory--and pay attention to the circled regions:

The eruption is reminiscent of the global event of August 1st, which hurled a CME toward Earth and sparked Northern Lights in the United States as far south as Iowa. This time, however, the CME will miss Earth (unless it veers off course) so there should be no resulting geostorms.

Stay tuned for more movies of this event.

SOUTHWESTERN FIREBALL: Last night (Sept. 21st) around 09:01 pm MDT, a dazzling fireball glided across the skies of New Mexico and west Texas. "We’ve been getting a lot of calls in the newsroom about an object – maybe a meteorite – falling from the sky," says Peter St. Cyr of KOAT TV in Albuquerque. An all-sky camera outside Santa Fe caught the object in flight. Click on the image to launch a 5 MB movie:


Note: In the movie, the stationary light is the full Moon, the moving light is the fireball.

"It took 23 seconds to cross the sky and was nearly as bright as the full Moon," says Thomas Ashcraft, who operates the camera. "The fireball made a sonic boom loud enough to be heard inside above fan noise and household din. At first I thought it was thunder."

After passing over New Mexico, the fireball apparently continued on to Texas. "At 10:05 pm CDT, my wife and I witnessed a slow moving fireball coming from the west," reports Matthew Byrd of Amarillo. And then a second fireball appeared: "About 7 or 8 min later we saw another fireball moving in the same direction directly over Amarillo. It was bright white and shedding white sparks."

US Space Command reports no satellites or pieces of space junk decaying at the time of the sightings. This was probably a random meteoroid--and maybe two--disintegrating in Earth's atmosphere.


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 22, 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...
 
 
2010 Perseid meteor shower
SunGazer.net
Toys which are out of this world from SpaceToys.com
space weather alerts
outdoor lighting
Superior Labels - Out of this World!
Christmas Cards
satellite tracking
Compare air travel around the globe with Airfares Flights
Support SpaceWeather.com
©2010 Spaceweather.com. All rights reserved. This site is penned daily by Dr. Tony Phillips.

©2013 Spaceweather.com. All rights reserved.