picture, Enter linuxastronomy.org website.

Andromeda (And)
Aquila (Aql) (eagle)
Bootes (Boo) (herdsman)
Cancer (Cnc) (crab)
Canes Venatici
Canes Venatici (CVn) (hunting dogs)
Canis Major
Canis Major (CMa) (big dog)
Canis Minor
Canis Minor (CMi) (lesser dog)
Capricornus (Cap) (sea goat)
Cassiopeia (Cas)
Centaurus (Cen) (centaur)
Cepheus (Cep
Corona Borealis
Corona Borealis (CrB) (Northern Crown)
Cygnus (Cyg) (swan)
Draco (Dra) (dragon)
Hercules (Her)
Leo (Leo) (lion)
Lyra (Lyr) (Lyre)
Ophiucus (Oph) (serpent holder)
Orion (Ori)
Pegasus (Peg) (winged horse)
Perseus (Per)
Scorpius (Sco) (scorpion)
Sagitarius (Sgr) (archer)
Telescopium (Tel) (telescope)
Ursa Major
Ursa Major (Uma) (big dipper)
Ursa Minor
Ursa Minor (Umi) (little dipper)
Ursa Minor
Virgo (Vir) (virgin)
Sky Events.
July 2006 and beyond...

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To send us a message.

Future events or events in progress.
Events listed below, are mostly of general or scientific interest.
They are events people can often be part of them.
July 3 Flyby of Apollo Asteroid 2004 XP14 (www.lpl.arizona.edu) with ephemeris (location in the sky).
2004 XP14 (www.lpl.arizona.edu) with 12 hour ephemeris.
2004 XP14 Planning (echo.jpl.nasa.gov), detailled information.
2004 XP14, 5 days steps Ephemerides (www.cfa.harvard.edu).
July 8 RAS Meeting (Riverside Astronomy Society, Riverside California).
July 21 RAS Star Party (Riverside Astronomy Society, Riverside California).
July 22 ASOD Star party (Astronomy Society of the Desert, Coachella Valley, California). Location: Sawmill Trailhead.
August 12 RAS Meeting (Riverside Astronomy Society, Riverside California).
August 12 Perseids (imo.net) meteors showers. Maximum will be between 23h —1h30m UT on August 12—13
August 19 ASOD Star party (Astronomy Society of the Desert, Coachella Valley, California). Location: Sawmill Trailhead.
August 25 RAS Star Party (Riverside Astronomy Society, Riverside California).
September 9 RAS Meeting (Riverside Astronomy Society, Riverside California).
September 22 RAS Star Party (Riverside Astronomy Society, Riverside California).
September 23 ASOD Star party (Astronomy Society of the Desert, Coachella Valley, California). Location: Sawmill Trailhead.
October 7 RAS Meeting (Riverside Astronomy Society, Riverside California).
October 13 ASOD Meeting (Astronomy Society of the Desert, Coachella Valley, California).
October 19-22 RAS Star Party (Riverside Astronomy Society, Riverside California). Nightfall Anza Borrego.
October 21 ASOD Star party (Astronomy Society of the Desert, Coachella Valley, California). Location: Sawmill Trailhead.
November 4 RAS Meeting (Riverside Astronomy Society, Riverside California).
November 10 ASOD Meeting (Astronomy Society of the Desert, Coachella Valley, California).
November 17 RAS Star Party (Riverside Astronomy Society, Riverside California).
November 18 ASOD Star party ASOD (Astronomy Society of the Desert, Coachella Valley, California). Location: Coachella Valley Preserve.
December 2 RAS Meeting (Riverside Astronomy Society, Riverside California).
December 8 ASOD Meeting ASOD (Astronomy Society of the Desert, Coachella Valley, California).
December 15 RAS Star Party (Riverside Astronomy Society, Riverside California).
December 16 ASOD Star party ASOD (Astronomy Society of the Desert, Coachella Valley, California). Location: Coachella Valley Preserve.

Solar system
Object: Earth Moon. Date and Time standard: PST (Pacific Standard Time). Year: 2006
Month: 1st quarter: full moon: latest quarter: new moon:
April 5 13 20 27
May 4 12 20 26
June 4 11 18 25
July 3 10 17 24
August 2 9 15 23
August 31
September 7 14 22
September 30
October 6 13 21
October 29
November 5 12 20
November 27
December 4 12 20
December 27

Date: what time: Events: Where: good chances of observation with: Should last a few days:
Naked eyes Bino
4 evening night Moon and Spica in conjunction. . x x x .
5 evening night Moon and Jupiter in conjunction. . x x x .
8 evening night Moon and Antares in conjunction. . x x x .
13 evening night Moon and Neptune in conjunction. . . . x .
14 evening night Moon and Uranus in conjunction. . . . x .
22 evening night Moon and Venus in conjunction. . x x x .
24 evening night Moon and Mercury in conjunction. . . . x .
26 evening night Moon and Saturn in conjunction. . . x x .
27 evening night Moon and Mars in conjunction. . . x x .

Object of the month.
Description of one object arbitrarily selected, which should be visible in the current month.
Object: Constellation: Description:
NGC 6543 Draco It is a Planetary nebula, also known as the "Cat's Eye Nebula". It seems to be one of the most complex planetary nebulae ever seen. It seems to have a visual brightness (magnitude) between 8.1 (seds.org) and 8.8 (daviddarling.info ), depending the source of information.
It is so complex, some people thing it might be a double-star system (hubblesite.org), (image from 1994).
Hubble space telescope took another picture of NGC 6543 on November 12 2004, using the Advanced Camera for Surveys (ACS). It is possible to cont eleven or more concentric rings, or shells on this image (esa.int).
Chandra X-Ray (chandra.harvard.edu) telescope view of NGC 6543.

planetary nebula has nothing to do with planet formation. NGC 6543 is no exception (seds.org).

This object has been observed by John F. and Eugene C. using John 22" Dobsonian telescope, in the night of July 1st to July 2nd, in Joshua Tree National Park, in Southern California.
Comment: we were not equipped to take any astro-photography.

Today in history. Some interesting events.
Historical events, as well as future historical events, such as spacecrafts journey.
Date: History events (sorted by year, month, day):
2006 June 12 Good visibility for ISS (esa.int). It will orbits overhead, up to fours times per night. Twice per year, in June and December, the Sun, the Earth and the orbit of the International Space Station (ISS) are aligned for several days such that the station does not pass through the Earth's shadow, with the result that it is continuously illuminated by sunlight.
Example of visibility (ESA / Heavens-Above). for our location.
Pass details: Whole Sky Chart (ESA / Heavens-Above). for our location.
Pass details: Detailed Star Chart (ESA / Heavens-Above).
Ground track (ESA / Heavens-Above).
2006 June 4 Venus Express’ nominal science phase should begins on 4 June (ESA).
Venus Express (ESA).
1980 July 18 India launch its first satellite without any help from another nation Rohini (csre.iitb.ac.in).
ISRO (wikipedia) Indian Space Research Organisation.
ISRO (ISRO) Indian Satellites program.
1972 August 21 Orbiting Astronomical ObservatoryOAO-3 (Copernicus) (wikipedia) was launched. It was part of a group of 4 satellites. Among them two failled, OAO-1 failled three days after launch, unfortunately even before its scientific equipments could be operational. OAO-B failed at launch time.
OAO-3 has been the most successful and has been operational until February 1981.
These type of satellites were the precursors of the Hubble Space Telescope. They carried telescopes and did great experiment in the UV range of frequency.
1969 July 20 Apollo 11 (history.nasa.gov) landed on the moon.
On July 21, Neil A. Armstrong and “Buzz” Aldrin where the first human to walk on another celestial object, also beeing able to enjoy a view of the earth from antoher celestial object.
They stay about 21 hours on the lunar surface and returned 46 pounds of lunar rocks. While they were getting all the media attention, Michael Collins was orbiting alone the moon.
The purpose of the Apollo 11 mission (spaceflight.nasa.gov) was to land men on the lunar surface and to return them safely to Earth.
Apollo 11 (science.ksc.nasa.gov) details.
Apollo 11 (lpi.usra.edu) Lunar and Planetary Institute page.
Apollo 11 Wikipedia article.
1950 July 24 It seems, the Bumper V-2 was the first missile launched at Cape Canaveral.
1868 August 18 Evidence of Helium (wikipedia) has been detected by French astronomer Pierre Janssen (wikipedia) during a total solar eclipse in Guntur, India. He assumed the line to be Sodium. On October 20 (1868), English astronomer Norman Lockyer (plicht.de) observed a similar yellow line in the solar spectrum, He assumed it was an element unknown on our planet Earth. He and English chemist Edward Frankland named the element with the Greek word for the Sun, (helios). Helium was unknown on Earth until March 26, 1895. British chemist William Ramsay found it while thinking to find argon gaz. Norman Lockyer, was also the founder of the magazine "Nature".
Pierre Jules César Janssen (hao.ucar.edu) Biography.
(cartage.org.lb) Biography.
(1911encyclopedia.org) Biography.
Helium (education.jlab.org) details.
Joseph Norman Lockyer (www-solar.mcs.st-andrews.ac.uk) Biography.
Joseph Norman Lockyer (wikipedia).
Joseph Norman Lockyer (hao.ucar.edu) (High Altitude Observatory).
The Norman Lockyer Observatory (projects.ex.ac.uk) & James Lockyer Planetarium.
Norman Lockyer (witcombe.sbc.edu) interest and study about Stonehenge (UK).
Norman Lockyer (cartage.org.lb) Bibliography.
1868 June 29 George Ellery Hale (mwoa.org) founder of Mt. Wilson Observatory (mtwilson.edu) was born in Chicago. He died on February 21, 1938.
Mount Wilson Observatory Association(mwoa.org).
Mount Wilson Observatory (mtwilson.edu) Site.
He invented the spectroheliograph. He was the main person (aas.org) regarding the creation of Caltech, as well as the Mt Palomar observatory (astro.caltech.edu), which the 200 inches telescope (cr.nps.gov) is named after him. Mt Palomar observatory overview (astro.caltech.edu).
George Ellery Hale (astro.uchicago.edu)
George Ellery Hale (wikipedia).
1864 August 5 Giovanni Donati (deepimpact.eso.org) did the first spectroscopic observations of a comet (Comet Tempel).
Giovanni Donati (chabotspace.org).
Giovanni Batista Donati (encyclopedia.jrank.org).
Later Sir William Huggins (1868) used Giovanni Donati information.
Les grands astronomes (astrosurf.com), astronomers timeline (in french).
Chronologie générale (ac-nice.fr), de l'antiquité à nos jours. Excellent time line (in french).
1818 August 1 (Some source say August 11) Maria Mitchell (physicsandastronomy.vassar.edu) was born. It seems she was the first woman professor of astronomy in the US.
Short biography (pocanticohills.org).
Short biography (astr.ua.edu).
Biography (cr.nps.gov).
Longer Biography (wikipedia) As of June 19, it claim, she was born on August 11.
1812 June 9 AstronomerJohann Gottfried Galle (wikipedia) was born in Germany. He died in 1910 on July 10.
He was the first astronomer to have seen Neptune and used calculations made by a french mathematicien, Urbain Le Verrier (wikipedia). Neptune is the only planet discovered based on mathematical prediction rather than regular observations.
Galileo's astronomical drawings show that he had first observed Neptune on December 27, 1612, and again on January 27, 1613. Meanwhile both times he thought having found a fixed star.
Galle found the planet Neptune within 1 degree of Urbain le Verrier prediction on September 23, 1846.
Neptune discovery (wikipedia) had some controversy. Another mathematician from UK John Couch Adams (wikipedia), did some prediction about a year earlier, but both men where unaware of the work of each other. John Adams predictions were about 10 degrees off.
A conflict emerged between UK and France, regarding who discovered Neptune, Later it has been decided to give credit to both mathmaticians.
However, after some more in depth reading and some documents finding in 1998 (no error), it has been decided that Adams did not in fact deserve equal credit with Le Verrier (Scientific American).
1730 June 26 Charles Messier (seds.org) was born. He died on April 12 1817.
He is famous for his Catalog of objects (lasam.ca) that are not comets.
Charles Messier (wikipedia).
The name "messier" (astro-rennes.com) was in old french a harvest keeper, the person in charge of the wheat or oat harvest.

The latest and original of this document is available at the following address: http://www.linuxastronomy.org/lias/lias/hp/sky_data/hp/index.html Select Ephemerides.

This page as well as the whole site is Copyright© , 2001 - 2006 Eugene Clement
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About the Author
I am simply a Linux enthusiast with an interest in science.

I like to build hardware projects and connect them to computers, to do data acquisitions and other things. I also like to make telescopes or make existing telescopes more convenient to use.

This page will hopefully help me to learn something. I am happy if I can share it with the reader.

I belong to the following astronomy societies: RAS. ASOD and linuxastronomy.org, which is a virtual group of linux enthusiast, experimenting with astronomy.

Suggestions or corrections with for goal to make this site better are welcome.

Astronomy picture of the day
Astronomy picture of the day. NASA
Picture by Canada-France-Hawaii Telescope.
This picture copyright.

Hubble picture of the day
Hubble space telescope, picture of the day (image and video).
ESA European Space Agency.

picture of the day, from Operational Significant Event Imagery
Picture from the OSEI (Operational Significant Event Imagery). These images usually represent environment change events.

Earth motion
for Coachella Valley.
seismology for Coachella Valleyseismology for Coachella Valley (Southern California).

Light pollution prevention start at home.

The night sky in the World. Satellite monitoring of the artificial night sky brightness and the stellar visibility.
IDAInternational Dark-Sky Association.

Auroral Activity Northern HemisphereAuroral Activity (Northern Hemisphere). NOAA Polar-orbiting Operational Environmental Satellite (POES) continually monitor the power flux carried by the protons and electrons that produce aurora in the atmosphere.
Auroral Activity Southern HemisphereAuroral Activity Southern Hemisphere.

GOES Solar X-ray Imager, provide full-disk images of the Sun once a minute in the 0.6-6 nm range with 5 arcsec pixels. It allow real-time prediction of solar-terrestrial disturbances.
more info.

SOHO Pick of the Week SOHO Pick of the Week. Courtesy of SOHO/EIT and SOHO/LASCO consortium. SOHO is a project of international cooperation between ESA and NASA.
latest SOHO imageslatest SOHO images171.
latest SOHO imageslatest SOHO images284.

CosmicopiaMore about Cosmic Rays (educational).