International Designator

Identifier for a spacecraft by launch year, launch number and piece, such as 1990-037B for the Hubble Space Telescope; in use since 1963, replacing a Greek-letter scheme from Harvard.

built upon by

• UN Register of Objects Launched into Outer Space project 1962 [src1][src2]

Sources

• https://en.wikipedia.org/wiki/International_Designator