| Weber-OSCAR 18 | |
| Mission Type: | Amateur radio satellite |
| Operator: | Weber State UniversityAMSAT[1] |
| Cospar Id: | 1990-005F |
| Satcat: | 20441 |
| Spacecraft Bus: | Microsat |
| Launch Mass: | 12kg (26lb) |
| Launch Date: | 22 January 1990, 01:44:35 UTC |
| Launch Rocket: | Ariane-40 H10[2] |
| Launch Site: | Kourou ELA-2 |
| Last Contact: | 1998 |
| Orbit Epoch: | 22 January 1990[3] |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Low Earth |
| Orbit Periapsis: | 777km (483miles) |
| Orbit Apoapsis: | 794km (493miles) |
| Orbit Eccentricity: | 0.00119 |
| Orbit Inclination: | 98.2° |
| Orbit Period: | 100.57 minutes |
| Apsis: | gee |
| Programme: | OSCAR |
| Previous Mission: | OSCAR 17 |
| Next Mission: | OSCAR 19 |
Weber-OSCAR 18 (also called WeberSAT, Microsat 3 and WO-18) is an American amateur radio satellite.[4]
The satellite was jointly developed, built by the Weber State College Center for Aerospace Technology and AMSAT, and on January 22, 1990, as a secondary payload, along with the SPOT 2 Earth observation satellite with an Ariane 4 from the Guiana Space Centre, Kourou, French Guiana.
The satellite had an AX.25 digipeater with uplink in the 2-meter band and downlink in the 70-centimeter band, as well as a CCD camera for color images and a piezoelectric detector for micrometeorites.
It was in operation until 1998.