| Name | Constellation BSat 4a, 4b |
| ID | bsat-4a |
| Country | Japan |
| Type | Communication |
| Satellites (NORAD) |
42951 46112 |
| Satellites (COSPAR) | 2017-059 2020-056 |
| Complementary constellations | bsat-1 (Gunter's) bsat-2 (Gunter's) bsat-2c (Gunter's) bsat-3 (Gunter's) bsat-3c_jcsat-110r (Gunter's) |
| Gunter's space URL | https://space.skyrocket.de/doc_sdat/bsat-4a.htm |
