Detection method
Pulsar Timing
Detecting planets from regular changes in a pulsar's precise pulses.
Exoplanets
How it works
A pulsar is an extremely regular cosmic clock; an orbiting planet shifts the arrival time of its pulses. This method found the first confirmed exoplanets.
Strengths and limitations
Applies only to the rare planets orbiting pulsars.
Example exoplanets
| Planet | Class | Host | Radius (R⊕) | Period (d) | Distance (ly) |
|---|---|---|---|---|---|
| M62H bPulsar Timing · 2024 | — | M62H | — | 0.1329 | — |
| PSR B0329+54 bPulsar Timing · 2017 | Terrestrial planet | PSR B0329+54 | 1.22 | 10140 | 1647 |
| PSR B1257+12 bPulsar Timing · 1994 | Terrestrial planet | PSR B1257+12 | 0.34 | 25.262 | 1957 |
| PSR B1257+12 cPulsar Timing · 1992 | Super-Earth | PSR B1257+12 | 1.91 | 66.5419 | 1957 |
| PSR B1257+12 dPulsar Timing · 1992 | Super-Earth | PSR B1257+12 | 1.8 | 98.2114 | 1957 |
| PSR B1620-26 bPulsar Timing · 2003 | Gas giant | PSR B1620-26 | 13.3 | — | — |
| PSR J1719-1438 bPulsar Timing · 2011 | — | PSR J1719-1438 | — | 0.0907 | 3914 |
| PSR J2322-2650 bPulsar Timing · 2017 | Hot Jupiter | PSR J2322-2650 | 13.9 | 0.323 | 750 |