You are viewing the page for Dec. 7, 2007
  Select another date:
<<back forward>>
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
SPACE WEATHER
Current conditions
Solar wind
speed: 296.8 km/sec
density: 0.3 protons/cm3
explanation | more data
Updated: Today at 2244 UT
X-ray Solar Flares
6-hr max: A5
2240 UT Dec07
24-hr: B1
1445 UT Dec07
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 07 Dec 07
So far, new sunspot 978 poses no threat for strong solar flares, but it is a nice target for properly-filtered telescopes. Credit: SOHO/MDI
Sunspot number: 29
What is the sunspot number?
Updated 03 Dec 2007
Far side of the Sun:
This holographic image reveals no sunspots on the far side of the sun. Image credit: SOHO/MDI
Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 1
quiet
explanation | more data
Current Auroral Oval:

Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Updated: 2007 Dec 07 2145 UT
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 2.7 nT
Bz: 1.2 nT north
explanation | more data
Updated: Today at 2245 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole could hit Earth on Dec. 11th or 12th. Credit: Hinode X-ray Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Dec 07 2204 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 Dec 07 2204 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
10 %
10 %
MINOR
10 %
10 %
SEVERE
01 %
01 %

What's up in Space
December 7, 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.

SOLAR X-RAY JETS: Astronomers using Japan's Hinode spacecraft have discovered that the sun is bristling with powerful "X-ray jets." They spray out of the sun's surface hundreds of times a day, launching blobs of hot gas as wide as North America at a top speed of two million miles per hour. These jets add significant mass to the solar wind and they may help explain a long-standing mystery of astrophysics: the superheating of the sun's corona: full story.

BIG SUNSPOT: Sunspot 978 popped over the sun's eastern limb yesterday and it is quickly becoming one of the largest sunspots of the year. Pete Lawrence of Selsey UK photographed the active region this morning:

 

"The image was taken through a Coronado Calcium-K PST," says Lawrence. "Its nice to see something tangible crossing the solar disk again." Sunspot 978 poses no threat for strong solar flares but this could change if its rapid growth continues. Stay tuned!

more images: from Paul Haese of Blackwood, South Australia; from Peter Paice of Belfast, Northern Ireland; from Alcaria Rego of Almada - Portugal; from J. Fairfull and John Stetson of South Portland, Maine; from Robert Morlan of La Porte, Indiana;

3D SUNBEAMS: Sometimes the best solar activity is a sunbeam. Put on your 3D glasses and regard the following:

The anagylph was created from a pair of photos taken by Laurent Laveder of Quimper, France. "This morning, due to a thin haze in the valley, some nice crepuscular rays appeared," he says. "It was a nice opportunity to capture the relief with a 3D view." The full sized image is guaranteed to startle.


Comet 17P/Holmes Photo Gallery
[Interactive World Map of Comet Photos]
[sky map] [ephemeris] [3D orbit] [Night Sky Cameras]

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 December 7, 2007 there were 908 potentially hazardous asteroids.
Dec. 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2007 VD184
Dec. 9
7.8 LD
18
95 m
3200 Phaethon
Dec. 10
47 LD
14
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 Links
NOAA Space Weather Prediction 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.
©2013 Spaceweather.com. All rights reserved.