Trident (spacecraft)
Trident is a space mission concept to the outer planets proposed in 2019 to NASA's Discovery Program. The concept includes flybys of Jupiter and Neptune with a focus on Neptune's largest moon Triton.
Comparison of two designs for Trident | |
| Mission type | Reconnaissance, flyby of outer planets |
|---|---|
| Operator | NASA |
| Mission duration | 13 years (planned) |
| Start of mission | |
| Launch date | Proposed: 25 October 2025 (with a backup in October 2026) |
| Flyby of Earth (gravity assist) | |
| Closest approach | 28 October 2026 |
| Flyby of Venus (gravity assist) | |
| Closest approach | 25 March 2027 |
| Flyby of Earth (gravity assist) | |
| Closest approach | 7 February 2028 |
| Flyby of Earth (gravity assist) | |
| Closest approach | 7 February 2031 |
| Flyby of Jupiter, Io (gravity assist) | |
| Closest approach | 28 June 2032 |
| Distance | 1.24 RJ or 88,650 km (55,080 mi) |
| Flyby of Neptune, Triton | |
| Closest approach | 28 June 2038 |
In 2020, Trident was selected along with three other Discovery proposals for further study, with two expected to be selected to fly as Discovery 15 and 16. On 2 June 2021, NASA selected the Venus missions DAVINCI+ and VERITAS over Trident and the Io Volcano Observer.
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