You are viewing the page for Jul. 2, 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: 567.8 km/s
density:
2.2 protons/cm3
explanation | more data
Updated: Today at 2247 UT


X-ray Solar Flares

6-hr max:
C1 1900 UT Jul02
24-hr: C3 0315 UT Jul02
explanation | more data
Updated: Today at 2245 UT

Daily Sun: 02 Jul '05

The sunspot number is rising with the emergence of many new small spots on the sun today. Credit: SOHO/MDI


Sunspot Number: 122
What is the sunspot number?
Updated: 01 Jul 2005

Far Side of the Sun

This holographic image reveals no large sunspots on the far side of the sun. Image credit: SOHO/MDI

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

Coronal Holes:

Earth is inside a solar wind stream flowing from the indicated coronal hole. 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 01 2204 UTC
FLARE 0-24 hr 24-48 hr
CLASS M 15 % 15 %
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 2005 Jul 01 2204 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 40 % 25 %
MINOR 15 % 10 %
SEVERE 10 % 05 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 35 % 25 %
MINOR 25 % 15 %
SEVERE 15 % 10 %

What's Up in Space -- 2 Jul 2005
Subscribe to Space Weather News

Would you like to see the space station fly over your backyard? Sign up for SpaceWeather PHONE.

AURORA OUTLOOK: A solar wind stream is buffeting Earth's magnetic field, but so far it has not sparked a geomagnetic storm. Nevertheless, high-latitude sky watchers should remain alert for auroras tonight in case geomagnetic activity intensifies.

SUNSPOTS GALORE: What a difference a few days makes. Three days ago, the sun was almost blank, now it's peppered with sunspots. Two of the biggest are shown below, blossoming from invisible specks to planet-sized active regions:


A 3-day SOHO movie of sunspots 782 and 783.

Despite their rapid growth, these spots do not yet have unstable magnetic fields that pose a threat for explosive solar flares. This could change, however, so stay tuned for updates. EXTRA: Safe Solar Observing Tips.

DEEP IMPACT: NASA's Deep Impact spacecraft is approaching Comet Tempel 1 and on July 3rd at 10:52 p.m. PDT (0552 UT on July 4th) it will poke a hole in the comet's icy, rocky nucleus. Right now the comet is a faint 10th magnitude fuzzball, but it could brighten considerably, perhaps to naked-eye visibility, when Deep Impact strikes. [observing tips] [sky map]

In Van Buren, Arkansas, Mike Holloway took this picture of Comet Tempel 1 on June 23rd:

For fun, Holloway has made a double image, which you can use to visualize the comet in 3D: click here. "Look at the small white spot in the center of the two pictures," says Holloway. "Relax your eyes and let them cross until a single image forms." Voila, a 3D comet.

Watch the Impact: Observing tips from comet hunter David H. Levy.



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 2 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 33308556 since January 2000.
©2019 Spaceweather.com. All rights reserved.