The Delta 5000 series was an American expendable launch system which was used to conduct an orbital launch in 1989. It was a member of the Delta family of rockets. Although several variants were put forward, only the Delta 5920 was launched.
None
Ride-share launch of 8 satellites to sun-synchronous orbit. Details TBD.
The Yaogan 50-02 is a Chinese military “remote sensing” satellite of unknown purposes.
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A pair of Chinese satellites reported to be for "Earth observation technological testing and validation" purposes. Actual usage not known.