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<<back forward>> -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
Current conditions
Solar wind
speed: 389.6 km/sec
density: 0.4 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: A4
1945 UT Jun19
24-hr: A6
0340 UT Jun19
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 19 Jun 10
A new sunspot provisionally numbered 1083 is emerging on the su's central meridian. Credit: SOHO/MDI
Sunspot number: 16
What is the sunspot number?
Updated 18 Jun 2010

Spotless Days
Current Stretch: 0 days
2010 total: 35 days (21%)
2009 total: 260 days (71%)
Since 2004: 803 days
Typical Solar Min: 486 days
explanation | more info
Updated 18 Jun 2010

The Radio Sun
10.7 cm flux: 71 sfu
explanation | more data
Updated 18 Jun 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 2
explanation | more data
Interplanetary Mag. Field
Btotal: 3.2 nT
Bz: 1.1 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes:
There are no large coronal holes on the Earth-facing side of the sun. Credit: SDO/AIA
NOAA Forecasts
Updated at: 2010 Jun 19 2201 UTC
0-24 hr
24-48 hr
01 %
01 %
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 Jun 19 2201 UTC
0-24 hr
24-48 hr
05 %
05 %
01 %
01 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
05 %
05 %
01 %
01 %
01 %
01 %
What's up in Space
June 19, 2010

NEW AND IMPROVED: Turn your iPhone or iPod Touch into a field-tested global satellite tracker. The Satellite Flybys app now works in all countries.


NLCs SIGHTED IN MONTANA: "Last night, I was going to bed about 11:00 p.m. and took a look out the window. The noctilucent clouds were just bright enough to catch my eye," reports Larry Anderson of Dillon, Montana. "Finally, some NLCs in North America!"

June 19th NLC photos: from Peter McCabe of Dundalk,Co.Louth, Ireland; from Martin McKenna of Maghera, Co. Derry, N.Ireland

FARSIDE BLAST: During the early hours of June 19th, the Solar and Heliospheric Observatory observed a bright coronal mass ejection (CME) emerging from the sun's northwestern limb. Click on the image to set the cloud in motion:

Nothing exploded on the visible face of the sun, so where did this CME come from? Answer: AR1081. Stationed over the sun's western limb, NASA's STEREO-Ahead spacecraft witnessed the blast: movie. It came from the vicinity of sunspot 1081, the same active region that produced several potent C- and M-class flares one week ago. AR1081 is now transiting the sun's far side, invisible from Earth, but it will turn back in our direction 8 to 10 days from now. Will it still be active then? Stay tuned!

UPDATE: The Solar Dynamics Observatory also recorded an amazing movie of the eruption rising over the sun's northwestern limb: play it.

more sun-shots: from Robert Arnold of Isle of Skye, Scotland; from Cai-Uso Wohler of Bispingen, Germany; from Peter Desypris of Island of Syros Greece

COMET McNAUGHT (C/2009 R1): Comet McNaught is approaching the sun, which makes the comet bright, but also difficult to see. "I had only a 15 minute view before the sky started to get light this morning," reports Parks Squyres, who sends this picture from SaddleBrooke, AZ:

The comet will continue to brighten as it swings by the sun. Unfortunately, though, after perihelion (closest approach to the sun) on July 2nd, the comet will not only recede from the sun but also from Earth. The final mornings of June could offer our last good look at this blue-green apparition from the outer solar system. More information and a sky map are available from Sky and Telescope. See also: ephemeris, 3D orbit.

more images: from Dr Paolo Candy of Ci.A.O. Cimini Astronomical Observatory - Italy; from Paul Kinzer of Galesville, Wisconsin; from Gianni Fardelli of Ascoli Piceno, Italy

May 2010 Aurora Gallery
[previous Mays: 2008, 2005, 2004, 2003, 2002] [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 June 19, 2010 there were 1133 potentially hazardous asteroids.
May 2010 Earth-asteroid encounters:
Miss Distance
2010 JR34
May 14
5.8 LD
12 m
2003 HR32
May 17
55.2 LD
1.0 km
2010 JN71
May 26
8.2 LD
245 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 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 and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Current Solar Images
  from the National Solar Data Analysis Center
Science Central
  more links...
©2008, -- This site is penned daily by Dr. Tony Phillips.













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