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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
SPACE WEATHER
Current conditions
Solar wind
speed: 457.3 km/sec
density: 1.9 protons/cm3
explanation | more data
Updated: Today at 2255 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Oct22
24-hr: A0
2245 UT Oct22
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 22 Oct 07
The sun is blank--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 20 Oct 2007
Far side of the Sun:
This holographic image reveals no large sunspots on the far side of the sun. Image credit: SOHO/MDI
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Current Auroral Oval:

Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Updated: 2007 Oct 22 2142 UT
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 3.4 nT
Bz: 0.2 nT north
explanation | more data
Updated: Today at 2256 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole should reach Earth on Oct. 25th or 26th. Credit: Hinode X-ray Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Oct 22 2203 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
01 %
01 %
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: 2007 Oct 22 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
15 %
MINOR
05 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
20 %
MINOR
05 %
15 %
SEVERE
01 %
10 %

What's up in Space
October 22, 2007
Where's Saturn? Is that a UFO--or the ISS? What's the name of that star? Get the answers from mySKY--a fun new astronomy helper from Meade.

PROMINENCE ALERT: This morning, a beautiful prominence is dancing over the sun's northwestern limb: image. If you have a solar telescope, take a look!.

more images: from Greg Piepol of Rockville, Maryland;

ALOHA ORIONIDS! This weekend's Orionid meteor shower caused by dust from Halley's Comet was a dud in most places, but not in Hawaii. From high atop the Haleakala Summit on Maui, Rob Ratkowski sends this report: "On Oct. 21st, the shower produced about one meteor per minute, many arriving as closely-spaced pairs." Of all the Orionids he photographed, this one was best:


Photo details: Nikon D200, 16mm, ISO 1000, Vixen GP-DX

"The fireball produced two flashes that lit up the ground and left a smokey trail that lingered for several minutes," says Ratkowski.

A few islands away on Kauai, Dave Parkhurst had a similar experience: "We witnessed about 30 Orionids. Several of those were extremely bright and even burned slightly green at times."

These sightings may signify a rich strand of comet dust that rained down over the Pacific. Or it may denote nothing more than the dark crystal-clear skies of high mountains and remote islands. Either way, Oct. 21st was a good night to be in Hawaii.

more images: from Tom Martinez of Cleveland, Missouri; from Sylvain Weiller of Saint Rémy lès Chevreuse, France; from Doug Zubenel of Kansas; from Brian Emfinger of Ozark, Arkansas; from Chris Peterson of Guffey, Colorado; from Marsha Adams of Sedona, Arizona; from David Campbell of Hatfield, Hertfordshire, UK;

FALL COLORS: "Fall foliage is peaking here in South Portland, Maine, and I decided to photograph the colors in an unusual way," says John Stetson. "Here they are reflected in the 6-inch hand-ground mirror of my next solar telescope."

"This mirror is use in a solar telescope designed by John Dobson," he explains. "The polished and figured mirror will remain unsilvered." The sun is so bright, oridinary polished glass is reflective enough. "Also, without a reflective coating this mirror will be able to gather more than enough light to view the full moon this Thursday." Stay tuned for moonshots!


October 2007 Aurora Gallery
[September Gallery] [Aurora Alerts]

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 22, 2007 there were 895 potentially hazardous asteroids.
Oct.-Nov. 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2007 TL16
Oct. 5
1.6 LD
16
27 m
2007 TC14
Oct. 18
11.7 LD
17
180 m
2340 Hathor
Oct. 22
23.3 LD
16
620 m
2005 GL
Nov. 8
8.0 LD
16
280 m
1989 UR
Nov. 24
27.6 LD
15
880 m
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 Links
NOAA Space Environment Center
  The official U.S. government bureau for real-time monitoring of solar and geophysical events, research in solar-terrestrial physics, and forecasting solar and geophysical disturbances.
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
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
  more links...
©2007, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.
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