| Official name | HIMAWARI 4 AKM |
| Alternative name | Himawari 4 (GMS 4) AKM (Star 27) |
| Cospar ID | 1989-070C |
| Norad ID | 20317 |
| Launch date | 1989-09-05 |
| Launch site | TNSTA |
| Launch vehicle | H-1 UM-129A (6 SO) |
| RCS size | MEDIUM |
| Decay date | ON ORBIT |
| Period (min) | 1458 |
| Inclination (deg) | 13.3 |
| Perigee (km) | 35193 |
| Apogee (km) | 37235 |
| Eccentricity | 0.0281935163196554 |
| Mean motion (revs. per day) | 0.987654320987654 |
| Semi-Major axis (km) | 42592.135 |
| Raan (deg) | 342.0065 |
| Arg of perigee (deg) | 45.9437 |
| Shape | Cyl + Cone |
| Mass (kg) | 27.26 |
| Diameter (m) | 0.7 |
| Height (m) | 1.2 |
| Span (m^2) | 1.2 |
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