General data bases

• ADS (http://adswww.harvard.edu): Publications
• ADC (http://adc.gsfc.nasa.gov): various catalogs
• CADC (http://cadcwww.dao.nrc.ca): nice front-end to lots of catalogs
• NED (http://nedwww.ipac.caltech.edu): extragalactic object front-end
• SIMBAD/CDS (http://cdsweb.u-strasbg.fr/Simbad.html: many published tables/catalogs