USA 77 DEB
| Launched | 7 November 1991 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 24638 |
| COSPAR ID | 1991-076K |
| Observing |
Launched alongside
USA 72 TITAN 4 R/B USA 74 USA 76 USA 77 USA 74 DEB USA 74 DEB USA 74 DEB USA 77 DEB USA 74-77 DEB USA 76 DEB USA 77 DEB USA 76 DEB USA 72 DEB