Detection method
Astrometry
Measuring the tiny side-to-side wobble of a star on the sky.
Exoplanets
How it works
A planet shifts its star's position by a minuscule amount; precise astrometry, as from Gaia, can detect this motion.
Strengths and limitations
Requires extraordinary positional precision.
Example exoplanets
| Planet | Class | Host | Radius (R⊕) | Period (d) | Distance (ly) |
|---|---|---|---|---|---|
| DENIS-P J082303.1-491201 bAstrometry · 2013 | Gas giant | DENIS-P J082303.1-491201 | 11.9 | 246 | 68 |
| Gaia-4 bAstrometry · 2025 | Gas giant | Gaia-4 | 12.4 | 571 | 240 |
| Gaia-5 bAstrometry · 2025 | Gas giant | Gaia-5 | 12.1 | 359 | 134 |
| GJ 896 A bAstrometry · 2022 | Gas giant | GJ 896 A | 13.3 | 284 | 20 |
| HD 128717 bAstrometry · 2025 | Gas giant | HD 128717 | 12.1 | 3420 | 240 |
| HIP 66074 bAstrometry · 2023 | Gas giant | HIP 66074 | 12.9 | 311 | 116 |