You are viewing the page for Oct. 22, 2013
  Select another date:
<<back forward>>
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids Internet Shopping Sites high quality binoculars excellent weather stations all-metal reflector telescopes rotatable microscopes
 
Solar wind
speed: 345.8 km/sec
density: 4.5 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: M4
2120 UT Oct22
24-hr: M4
2120 UT Oct22
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 22 Oct 13
Sunspot AR1875 poses a growing threat for X-class solar flares. Credit: SDO/HMI
Sunspot number: 179
What is the sunspot number?
Updated 22 Oct 2013

Spotless Days
Current Stretch: 0 days
2013 total: 0 days (0%)
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

Update
22 Oct 2013

The Radio Sun
10.7 cm flux: 136 sfu
explanation | more data
Updated 22 Oct 2013

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 5.4 nT
Bz: 3.2 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 22 Oct 13
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.

Spaceweather.com is now posting daily satellite images of noctilucent clouds (NLCs), which hover over Earth's poles at the edge of space. The data come from NASA's AIM spacecraft. The north polar "daisy" pictured below is a composite of near-realtime images from AIM assembled by researchers at the University of Colorado's Laboratory for Atmospheric and Space Physics (LASP).
Noctilucent Clouds
Switch view: Europe, USA, Asia, Polar
Updated at: 09-02-2013 11:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2013 Oct 22 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
30 %
30 %
CLASS X
05 %
05 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2013 Oct 22 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
15 %
MINOR
01 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
20 %
SEVERE
10 %
20 %
 
Tuesday, Oct. 22, 2013
What's up in space
 

When is the best time to see auroras? Where is the best place to go? And how do you photograph them? These questions and more are answered in a new book, Northern Lights - a Guide, by Pal Brekke & Fredrik Broms.

 
Northern Lights - a Guide

CHANCE OF FLARES: Fast-growing sunspot AR1875 (movie) has developed a 'beta-gamma-delta' magnetic field that harbors energy strong explosions. NOAA forecasters estimate a 30% chance of M-class solar flares and a 5% chance of X-flares on Oct. 22nd. Solar flare alerts: text, voice.

COMET EXPLOSION: Almost 450 million km from Earth, Comet C/2012 X1 (LINEAR) has exploded. Amateur astronomers are reporting a 100-fold increase in the comet's brightness compared to predictions, and the comet's atmosphere or "coma" now resembles that of exploding Comet 17P/Holmes in 2007. Using a remotely-controlled 0.5 meter telescope in New Mexico, European observers Ernesto Guido, Martino Nicolini and Nick Howes took this picture of the spherical explosion on Oct 21st:

"The predicted magnitude of the comet on Oct. 20th was about +14," says Guido. "Now it is close to +8.5." This is below the threshold for naked-eye visibility, but bright enough for backyard telescopes equipped with digital cameras.

Prompted by the reports of Guido et al, Romanian amateur astronomer Maximilian Teodorescu observed the comet on Oct. 22nd, confirming its brightness and spherical structure. "It looked exactly like Comet Holmes back in 2007," says Teodorescu.

Located in the constellation Coma Berenices, Comet LINEAR X1 rises in the east about an hour before the sun. The low altitude of the comet in morning twilight is a challenge. "I could not see the comet through the eyepiece of my 4.5 inch refracting telescope," adds Teodorescu, "but the camera detected it easily enough."

The outburst does not necessarily signal a disintegration of the comet. Possibly, a local vein or cavern of deep ice in the comet's nucleus has been exposed to sunlight. Rapid evaporation of fragile ices could account for the comet's bigger- and brighter-than-expected atmosphere. Monitoring in the nights ahead might reveal clues to what happened ... and when. Resources: 3D orbit, ephemeris, sky map.

Realtime Comet Photo Gallery

ERUPTING FILAMENT AND CME: During the early hours of Oct. 22nd, a long filament of magnetism erupted on the sun: movie. The explosion hurled a CME into space, shown here in a coronagraph movie from the Solar and Heliospheric Observatory:

Radio emissions from shock waves in the CME suggest an expansion velocity of near 700 km/s (1.6 million mph). That may sound fast, but in fact 700 km/s is a run-of-the-mill speed for CMEs. Although the eruption occured squarely on the Earthside of the sun, the expanding cloud might miss Earth. The bulk of the ejecta appears to be heading north of the sun-Earth line. Stay tuned for updates as NOAA forecasters complete their analysis of this event. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

ORIONID METEOR SHOWER--UPDATE: The Canadian Meteor Orbit Radar (CMOR) is still detecting echoes from Orionid meteors. This means Earth is still inside a stream of debris from the shower's parent comet, Halley. A CMOR sky map made at 13:45 UT on Oct. 22nd shows the Orionid radiant (ORI) clearly active:

Forecasters expected the shower to peak on Oct. 21st with about 20 meteors per hour. However, Halley's debris stream is so broad that Orionid activity has spilled into Oct. 22nd. If you're up before sunrise, be alert for meteors! [meteor radar] [sky map]

Realtime Space Weather Photo Gallery


Realtime Comet ISON Photo Gallery


Realtime Aurora Photo Gallery

  All Sky Fireball Network
NEW: Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA's Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth's atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Oct. 22, 2013, the network reported 38 fireballs.
(22 sporadics, 12 Orionids, 4 southern Taurids)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point--Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

  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, 2013 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2013 UB
Oct 19
1.6 LD
20 m
2000 DK79
Nov 10
49.1 LD
3.0 km
2011 JY1
Nov 13
8.2 LD
57 m
2001 AV43
Nov 18
3 LD
52 m
2010 CL19
Nov 25
37.6 LD
1.3 km
2013 NJ
Nov 26
2.5 LD
190 m
2011 YD29
Dec 28
6.1 LD
24 m
2007 SJ
Jan 21
18.9 LD
1.9 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
Space Weather Alerts
   
  more links...
©2010 Spaceweather.com. All rights reserved. This site is penned daily by Dr. Tony Phillips.
©2013 Spaceweather.com. All rights reserved.