Magnum / Orion

Magnum / Orion
series satellites


This page contains philatelic information on Magnum / Orion-series satellites. Catalog numbers, years of issue, and notes on the satellites featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.

The Orion-series military satellites from the 1980s should not be confused with the Orion-series communications satellites from the 1990s, which go by the same name.

Launch information
(found elsewhere)
Launch covers
(including anniversary-of-launch covers, and launch-related event covers)
(farther below)
Other postal items
(stamps, souvenir sheets, aerogrammes, postal cards, etc.)
(immediately below)
Magnum / Orion
(USAF)
Magnum / Orion
(USAF)
Magnum / Orion
(USAF)


Below is a list of Magnum / Orion-series satellite postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).

CountryCatalog NumberType of ItemYear of IssueNotes on Content
Magnum / Orion (USAF)
No (non-launch cover) postal items found


Below is a list of Magnum / Orion-series satellite launch covers (including anniversary-of-launch covers, and launch-related event covers).

CountryCancel DateCancel LocationType of ItemNotes on Content
Magnum / Orion (USAF)
1985-01-24: Magnum-1 / Orion-1 (from STS-20 (51C))
United States1985-01-05Kennedy Space Center FL(Space Voyage grey and orange and pink) cachet on coverSTS-51C rollout ("secret 'sigint' satellite")
Chile1985-01-24Santiago(Space Voyage green and orange and pink) cachet on coverSTS-51C launch ("classified military" and "'sigint' intelligence satellite")
United States1985-01-24Cape Canaveral FL(Hand-written) cachet on coverSTS-51C launch ("secret military satellite")
United States1985-01-24Kennedy Space Center FL(Space Voyage purple and orange and pink) cachet on coverSTS-51C launch ("secret 'sigint' satellite")
United States1985-01-24Greenbelt MD(Space Voyage green and orange and pink) cachet on coverSTS-51C launch ("secret 'sigint' satellite")
United States1985-01-24Houston TX(Space Voyage brown and orange and pink) cachet on coverSTS-51C launch ("secret 'sigint' satellite")
United States1985-01-24Waimea HI(Space Voyage brown and orange and pink) cachet on coverSTS-51C launch ("classified military" and "'sigint' intelligence satellite")
United States1985-01-24
1985-01-27
Kennedy Space Center FL (machine cancel)
Kennedy Space Center FL (hand cancel)
(Space Voyage purple and orange and pink) cachet on coverSTS-51C launch ("classified")
STS-51C landing
United States1985-01-25Sunnyvale CA(Space Voyage blue and orange and pink) cachet on coverMagnum-1 deployed ("classified military" and "'sigint' intelligence satellite")
United States1985-01-25Cape Canaveral FL(Space Voyage green and orange and pink) cachet on coverMagnum-1 deployed ("secret 'sigint' satellite")
United States1985-01-25Cape Canaveral FL(Colorano silk) cachet on coverMagnum-1 deployed ("Neither NASA nor the Air Force would confirm")
United States1985-01-25Edwards AFB, CA(Colorano silk) cachet on coverMagnum-1 deployed ("secret payload" and "secret cargo")
United States1985-01-25Cape Canaveral FL(Centennial) cachet on coverMagnum-1 deployed ("secret military spy satellite")
Spain1985-01-27Cadiz(Space Voyage blue and orange and pink) cachet on coverSTS-51C landing ("classified")
United States1985-01-27WSMR, NM(Space Voyage black and orange and pink) cachet on coverSTS-51C landing ("classified satellite")
United States1985-01-27Houston TX(Space Voyage black and orange and pink) cachet on coverSTS-51C landing ("classified satellite")
United States1985-01-27Kennedy Space Center FL(Space Voyage green and orange and pink) cachet on coverSTS-51C landing ("classified satellite")
United States1985-01-27Kennedy Space Center FL(Centennial) cachet on coverSTS-51C landing ("secret mission")
United States1985-01-27Kennedy Space Center FL(Zaso/IASP no.91) cachet on coverSTS-51C landing ("'Secret' 51-C DOD mission"; "USAF advanced signal intelligence satellite")
United States1985-01-27
1985-01-24
Kennedy Space Center FL (hand cancel)
Kennedy Space Center FL (machine cancel)
(Space Voyage purple and orange and pink) cachet on coverSTS-51C landing ("classified")
STS-51C launch
Japan1985-01-28Kadena(Space Voyage purple and orange and pink) cachet on coverSTS-51C landing ("classified satellite")
1989-11-23: Magnum-2 / Orion-2 (from STS-33R)
United States1989-11-22Kennedy Space Center FL(Mission patch) cachet on cover, also insert and insert backSTS-33R launch
United States1989-11-22Kennedy Space Center FL(Tan and purple rubber-stamp) cachet on coverSTS-33R launch ("classified DoD payload")
United States1989-11-22Cape Canaveral FL(Boudwin? black and blue rubber-stamp) cachet on (airmail) coverSTS-33R launch
United States1989-11-22Kennedy Space Center FL(Red printed) cachet on coverSTS-33R launch
United States1989-11-22Kennedy Space Center FL(Cyan printed) cachet on postcardSTS-33R launch
United States1989-11-22Kennedy Space Center FL(Colorano silk) cachet on coverSTS-33R launch
United States1989-11-22Cape Canaveral FL(Colorano silk) cachet on coverSTS-33R launch ("secret military spy satellite")
United States1989-11-22Houston TX(Colorano silk) cachet on coverSTS-33R launch ("secret military satellite")
United States1989-11-23Houston TX(Colorano silk) cachet on coverMagnum-2 deployed ("The National Security Agency [NSA] will operate the payload and monitor its signal interceptions" and "satellite said to be identical to the one deployed on the Defense Department mission 51-C" (a reference to Magnum-1))
Australia1989-11-24Adelaide SA(Purple rubber-stamp) cachet on coverSTS-33R tracking
United States1989-11-24Kennedy Space Center FL(Black and blue rubber-stamp) cachet on (airmail) cover"recovered left solid rocket booster"
United States1989-11-27Edwards AFB, CA(Colorano silk) cachet on coverSTS-33R landing
United States1989-11-27Edwards AFB, CA(Brown printed) cachet on coverSTS-33R landing


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