At least one launch failure before 2019 (satellite not injected at or near its target orbit).

Created by Athrithalix on 2018-05-01; known on 2018-12-31; judged right by Athrithalix on 2019-02-22.

• Athrithalix estimated 80% on 2018-05-01
• pranomostro estimated 60% on 2018-09-19
• Athrithalix   judged this prediction right on 2019-02-22.