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Learn where to find astronomy papers, preprints, ephemerides data, star information, sky conditions, satellite predictions, and more online. Explore NASA ADS, JPL Horizons, SIMBAD, AAVSO, magazines, and astronomical societies.
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Finding Useful Information ON THE WEB
Published papers • Most published papers in astronomy can be found on the NASA Astrophysics Data System: http://adswww.harvard.edu/
ADS • To access the most recent papers in some journals you will need a subscription to them, or access them from an institution that has a subscription
Preprints • These are papers posted on the web before they have been published in a journal • Many preprints are posted on astro-ph: http://xxx.lanl.gov/find/astro-ph No subscription is needed to access these preprints.
Preprints • If you want, you can have the astro-ph website send you daily the list of new preprints posted on their site
Solar System Ephemerides • JPL Horizons On-Line Ephemeris System • The JPL Horizons On-Line Ephemeris System provides easy access to key solar system data and flexible production of highly accurate ephemerides for solar system objects. This includes 170,000+ asteroids & comets, 128 natural satellites, 9 planets, the Sun, select spacecraft, and several dynamical points such as Earth-Sun L1, L2 and system barycenters. Users may define their own objects, then use the system to integrate the trajectory, or conduct parameter searches of the comet/asteroid database, searching on combinations of up to 42 different parameters. Rise, transit and set may be identified to the nearest minute. Close-approaches by asteroids and comets to planetary bodies (and Ceres, Pallas, and Vesta) can be easily identified. Orbit uncertainties can be computed for asteroids and comets.
http://ssd.jpl.nasa.gov/horizons.html • Can give you positions, distances, and other information about a wide range of celestial objects
SIMBAD • http://simbad.u-strasbg.fr/sim-fid.pl • Provides a variety of information on individual objects, mainly on stars
Clear Dark Sky • Predicted sky conditions for different locations and links to other useful sites • http://cleardarksky.com/c/MSUObMIkey.html?1
Satellite Predictions • Heavens Above • Can be accessed from the Clear Dark Sky website • http://www.heavens-above.com/
Variable Stars • American Association of Variable Star Observers www.aavso.org General Catalog of Variable Stars http://www.sai.msu.su/groups/cluster/gcvs/gcvs/
SPACE WEATHER • http://www.spaceweather.com/ • http://www.sec.noaa.gov/SWN/ • http://www.spacew.com/
Magazines • Sky and Telescope • http://skyandtelescope.com/ • Astronomy • http://www.astronomy.com/
Astronomical Societies • American Astronomical Society • http://www.aas.org/ • Has a section about astronomy as a career
Astronomical Society of the Pacific • http://www.astrosociety.org/
Association of Lunar and Planetary Observers • http://www.lpl.arizona.edu/alpo/
Astronomy Picture of the Day • http://antwrp.gsfc.nasa.gov/apod/astropix.html