| (In semi-random order) |
| List of Bright Satellites (the 45 to 65 brightest objects, by Rainer Kracht -- not recently updated?) |
| Some Brighter Satellites (about 150 of the brightest objects, by Jay Respler and Jeff Hunt, as of 2002) |
| Mark Wade's Encyclopedia Astronautica (comprehensive) |
| Online Index of Objects Launched into Outer Space (payloads, United Nations Office of Outer Space Affairs) |
| NASA Current Missions |
| NASA's "Spacecraft Query Form" |
| The Satellite Encyclopedia |
| JPL Mission & Spacecraft Library |
| Jonathan's Space Home Page (Jonathan McDowell) |
| Federation of American Scientists (FAS) Space Policy Project |
| GlobalSecurity.org Military Space Systems |
| Dave's Space Page (David Hastings) |
| Gunter's Space Page and USA military satellites (Gunter Krebs) |
| Don Gardner's Satellite Program Homepages |
| Orbiting Earth Satellite Histories (through 1990, by Ron Baalke) |
| Unmanned spacecraft and satellites (Daniel Glover) |
| NASA Experimental Communications
Satellites 1958-1995 (Daniel Glover) |
| Unmanned Space Missions (UCAR) |
| Heavens-Above Select Satellite |
| Russian Spacecraft |
| Space and Tech.Com Space Database |
| Spacewarn Bulletin |
| Space-Track (registration required) |
| Orbital element sets
(two-line elements, TLEs, keplerian elements, keps, elsets, etc.) |
| Launch logs:
|