You are viewing the page for Jul. 16, 2005
  Select another date:
<<back forward>>
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

SpaceWeather.com
Science news and information about the Sun-Earth environment.

SPACE WEATHER
Current
Conditions

Solar Wind
speed: 444.4 km/s
density:
3.7 protons/cm3
explanation | more data
Updated: Today at 2245 UT


X-ray Solar Flares

6-hr max:
B4 1925 UT Jul16
24-hr: C9 0335 UT Jul16
explanation | more data
Updated: Today at 2245 UT

Daily Sun: 16 Jul '05

The magnetic field of sunspot 790 harbors energy for M-class solar flares. Credit: SOHO/MDI


Sunspot Number: 38
What is the sunspot number?
Updated: 15 Jul 2005

Far Side of the Sun

This holographic image reveals one good-sized sunspot on the far side of the sun. Image credit: SOHO/MDI

Interplanetary Mag. Field
Btotal: 5.0 nT
Bz:
0.9 nT north
explanation | more data
Updated: Today at 2246 UT

Coronal Holes:

A solar wind stream flowing from the indicated coronal hole could reach Earth on July 20th. Image credit: SOHO Extreme UV Telescope.


SPACE WEATHER
NOAA
Forecasts

Solar Flares: Probabilities for a medium-sized (M-class) or a major (X-class) solar flare during the next 24/48 hours are tabulated below.
Updated at 2005 Jul 16 2204 UTC
FLARE 0-24 hr 24-48 hr
CLASS M 15 % 05 %
CLASS X 05 % 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 2005 Jul 16 2204 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 20 % 15 %
MINOR 10 % 05 %
SEVERE 05 % 01 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 30 % 20 %
MINOR 15 % 10 %
SEVERE 05 % 05 %

What's Up in Space -- 16 Jul 2005
Subscribe to Space Weather News

The space shuttle is returning to flight. Would you like a call when it zooms over your backyard? Sign up for SpaceWeather PHONE.

AURORA ALERT: People in Canada and northern US states should be alert for auroras tonight. A display is possible when one or two coronal mass ejections (CMEs) en route to Earth arrive, sparking a geomagnetic storm. The incoming CMEs were hurled into space on July 13th and 14th by explosions above sunspot 786.

SOLAR ERUPTION: An enormous prominence has just erupted from the sun. How big was it? From end to end, it measured almost 50 Earth-diameters. The Solar and Heliospheric Observatory (SOHO) captured this image at 0119 UT on July 16th:

The eruption was spectacular but not Earth-directed. Our planet should experience no effects from the blast.

ISS FLYBY: Yes, there really are spaceships up there. On July 14th, Stefan Seip photographed this one, the International Space Station, orbiting over Stuttgart, Germany:

The horizontal streak is the ISS, "crossing the summer triangle formed by the stars Vega, Deneb and Altair," says Seip. "The inset shows ISS [as seen through] a 10-inch telescope."

Fuel sensors permitting, the ISS will be joined by the space shuttle Discovery later this month, and they will appear as a bright pair over many US and European cities. Would you like a call when they glide over your home town?



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 are on a collision course with our planet, although astronomers are finding new ones all the time.

On 16 Jul 2005 there were 703 known Potentially
Hazardous Asteroids

June-July 2005 Earth-asteroid encounters
ASTEROID

 DATE (UT)

 MISS DISTANCE

 MAG.
2005 LM3

June 3

4.0 LD

 18
2005 LU3

June 4

4.9 LD

 20
2005 LD

June 19

7.1 LD

 17
2000 AG6

July 22

8.7 LD

 20
Notes: LD is a "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 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. See also Snow Crystals.

Solar and Heliospheric Observatory -- Realtime and archival images of the Sun from SOHO. (European Mirror Site)

Daily Sunspot Summaries -- from the NOAA Space Environment Center.

Current Solar Images --a gallery of up-to-date solar pictures from the National Solar Data Analysis Center at the Goddard Space Flight Center. See also the GOES-12 Solar X-ray Imager.

Recent Solar Events -- a nice summary of current solar conditions from lmsal.com.

SOHO Farside Images of the Sun from SWAN and MDI.

The Latest SOHO Coronagraph Images -- from the Naval Research Lab

The Sun from Earth -- daily images of our star from the Big Bear Solar Observatory

List of Potentially Hazardous Asteroids -- from the Harvard Minor Planet Center.

Observable Comets -- from the Harvard Minor Planet Center.

What is the Interplanetary Magnetic Field? -- A lucid answer from the University of Michigan. See also the Anatomy of Earth's Magnetosphere.

Real-time Solar Wind Data -- from NASA's ACE spacecraft. How powerful are solar wind gusts? Read this story from Science@NASA.

More Real-time Solar Wind Data -- from the Solar and Heliospheric Observatory Proton Monitor.

Aurora Forecast --from the University of Alaska's Geophysical Institute

Daily Solar Flare and Sunspot Data -- from the NOAA Space Environment Center.

Lists of Coronal Mass Ejections -- from 1998 to 2001

What is an Iridium flare? See also Photographing Satellites by Brian Webb.

What is an Astronomical Unit, or AU?

Mirages: Mirages in Finland; An Introduction to Mirages;

NOAA Solar Flare and Sunspot Data: 1999; 2000; 2001; 2002; 2003; 2004; Jan-Mar., 2005;

Space Audio Streams: (University of Florida) 20 MHz radio emissions from Jupiter: #1, #2, #3, #4; (NASA/Marshall) INSPIRE: #1; (Stan Nelson of Roswell, New Mexico) meteor radar: #1, #2;

Recent International Astronomical Union Circulars

GLOSSARY | SPACE WEATHER TUTORIAL

This site is penned daily by Dr. Tony Phillips: email

You are visitor number 33334918 since January 2000.
©2019 Spaceweather.com. All rights reserved.