DENPA
| Launched | 18 August 1972 |
| Flight ended | 18 May 1980 |
| Status | Decayed |
| Launch site | Uchinoura Space Center (Fomerly Kagoshima Space Center-University of Tokyo, Japan) |
| Owner | Japan |
| NORAD ID | 6152 |
| COSPAR ID | 1972-064A |
| Alternative names |
REXS |
| Observing |
Launched alongside
M-4S R/B