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Orbiting Solar Observatory
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Orbiting Solar Observatory
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Below is a checklist of Orbiting Solar Observatory (OSO) series satellite postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.). 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.
Farther below is a list of OGO-series launch covers, anniversary-of-launch covers, and launch-related event covers.
For OSO launch information see the OSO-series table on the scientific/research satellites page.
| Country | Catalog Number* | Type of Item** | Year of Issue | Notes on Content |
|---|---|---|---|---|
| OSO | ||||
| Antigua and Barbuda | 702 | In (lower-center) margin of SS1 | 1983 | OSO-8 |
| Barbuda | 577 | In (lower-center) margin of SS1, Antigua 702 overprinted | 1983 | OSO-8 |
| Central Africa Republic | 1175b | One of MS4 (1175 (a-d)) | 1997 | OSO-1 |
| Gambia | 2269d | One of MS6 (2269 (a-f)) | 2000 | OSO-1/71 |
| Gambia | 2269d imp essay | One of MS6 (2269 imperforate essay (a-f)) | 2000 | OSO-1/71 |
| Micronesia | 344b (Mi722) | One of MS20 (344 (a-t)) | 1999 | OSO-1 |
| Panama | 457B (Mi780) | 1964 | OSO-1 | |
| Paraguay | 922 (Mi1522) i922 (Mi1530) | Changed colors on imperforate | 1966 | OSO-1/71 |
| Paraguay | 926 (Mi1526) i926 (Mi1534) | Changed colors on imperforate | 1966 | OSO-1/71 |
| Paraguay | 926a (BL79) i926a (BL80) | SS1, changed colors on imperforate | 1966 | OSO-1/71 |
| Satellite Beach FL (U.S.) | Local | set-C03 (blue) | 1964 | OSO-1/71 |
| Satellite Beach FL (U.S.) | Local | set-C03 (blue) overprinted in gold | 1965 | OSO-1/71 |
| Sharjah | 48 (Mi60) | 1964 | OSO-1/71 | |
| Sharjah | 48A | 48 overprinted new currency | 1967 | OSO-1/71 |
| Tanzania | 1323 | 1994 | OSO-8 | |
| Togo | 501 (Mi447) | 1964 | OSO-1/71 | |
| Togo | 503 (Mi449) | 1964 | OSO-1/71 | |
| Togo | 505a (BL17) | Imperforate MS4 (502-505) | 1964 | OSO-1/71 |
| Umm Al Qiwain | Mi78 | 1966 | AOSO2 | |
| Umm Al Qiwain | Mi89 | Mi78 overprinted new currency | 1967 | AOSO2 |
| United States | None | Cachet on OAO-2 launch cover | 1968 | OSO-1/71 |
| United States | None | Cachet on OGO-5 launch cover | 1968 | OSO-1/71 |
| Yemen Arab Republic | C90 (Mi1701) C90_ds | Also imperforate deluxe sheet | 1982 | OSO-1/71 |
*Scott catalog number, unless prefixed with Mi or BL for Michel; "i" prefix denotes imperforate version.
**SS# = souvenir sheet, MS# = miniature sheet, where # = number of stamps in sheet, and the numbers in parentheses are the catalog numbers of the stamps in the sheet.
1OSO-1 thru OSO-7 are all basically identical.
2The AOSO (Advanced OSO) program was canceled.
Below is a list of OSO-series launch covers, anniversary-of-launch covers, and launch-related event covers.
| Country | Cancel Date | Cancel Location | Type of Item | Notes on Content |
|---|---|---|---|---|
| OSO | ||||
| United States | 1962-03-07 | Patrick AFB, FL | (SpaceCraft/Swanson) cachet on cover | OSO-1 launch |
| United States | 1962-03-07 | Port Canaveral FL | (Goldcraft) cachet on cover, also insert | OSO-1 launch |
| United States | 1965-02-03 | Cape Canaveral FL | (SpaceCraft/Swanson) cachet on cover | OSO-2 launch |
| United States | 1965-08-25 | Cape Canaveral FL | (SpaceCraft/Swanson) cachet on cover | OSO-C launch [failed] |
| United States | 1967-03-08 | Patrick AFB, FL | (SpaceCraft/Swanson) cachet on cover | OSO-3 launch |
| United States | 1967-03-08 | Cape Canaveral FL | (Orbit) cachet on cover | OSO-3 launch |
| United States | 1967-10-18 | Cape Canaveral FL | (SpaceCraft/Swanson) cachet on cover | OSO-4 launch |
| United States | 1967-10-18 | Cape Canaveral FL | (Orbit) cachet on cover | OSO-4 launch |
| United States | 1969-01-22 | Patrick AFB, FL | (SpaceCraft/Swanson) cachet on cover | OSO-5 launch |
| United States | 1969-01-22 | Cape Canaveral FL | (Centennial?) cachet on cover | OSO-5 launch |
| United States | 1969-01-22 | Cape Canaveral FL | (Orbit) cachet on cover | OSO-5 launch |
| United States | 1969-01-22 | Satellite Beach FL | (Rubber-stamp) cachet on cover | OSO-5 launch |
| United States | 1969-08-09 | Cape Canaveral FL | (Orbit) cachet on cover | OSO-6 launch |
| United States | 1969-08-09 | Patrick AFB, FL | (SpaceCraft/Swanson) cachet on cover | OSO-6 launch |
| United States | 1971-09-29 | Kennedy Space Center FL | (?) cachet on cover | OSO-7 launch |
| United States | 1971-09-29 | Kennedy Space Center FL | (Space Voyage) cachet on cover | OSO-7 launch |
| United States | 1971-09-29 | Kennedy Space Center FL | (Centennial?) cachet on cover | OSO-7 launch |
| United States | 1975-06-21 | Satellite Beach FL | (Rubber-stamp) cachet on cover | OSO-8 launch |
| United States | 1975-06-21 | Cape Canaveral FL | (Space Voyage) cachet on cover | OSO-8 launch |
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