| Definition | an orbit around the earth or some other planet from which a space vehicle can be launched farther into space; also, an orbit which is stable and from which visits to the planet surface can conveniently be made |
| OED requirements | antedating 1953 |
| Earliest cite | Robert A. Heinlein, 'Starman Jones' |
| Comment | Ralf Brown located and Mike Christie submitted a 1958 cite from Robert Silverberg's "Prime Commandment". Jeff Prucher veriefied a 1953 cite from the first publication of Robert A. Heinlein's "Starman Jones" Earliest cite in the OED: 1960. |
| Last modified | 6 July, 2008 |
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| 1953 R. A. Heinlein Starman Jones 203 | They hung in parking orbit while their possible future home was examined from the control room. |
| 1953 R. A. Heinlein Starman Jones (1975) xvii. 184, | I want the ship placed in a parking orbit. |
| 1953 R. A. Heinlein Starman Jones (1975) xv. 168 | They hung in parking orbit while their possible future home was examined from the control room. |
| 1958 R. Silverberg in Original Sci. Fiction Stories Jan. 6/1 | Even had the strangers come that night, if they had left their ship in a parking orbit and landed on World by dropshaft, it might not have happened. |
| 1967 J. Blish Star Trek 79 | The planet's effective mass would change, and perhaps even its center of gravity‥so that what had been a stable parking orbit for the Enterprise at one moment would become unstable and fragment-strewn the next. |