PSR J2322-2650 b
PSR J2322-2650 b is a hot Jupiter orbiting PSR J2322-2650 in the constellation Sculptor. It lies about 750 light-years from Earth and was discovered in 2017 using the pulsar timing method.
Is PSR J2322-2650 b in the Habitable Zone?
The position of PSR J2322-2650 b relative to the habitable zone of PSR J2322-2650 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on PSR J2322-2650 b — one full orbit around PSR J2322-2650 — lasts just 7.8 hours, shorter than Mercury's 88-day year. It orbits at an average distance of 0.010 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.002).
How Was PSR J2322-2650 b Discovered?
PSR J2322-2650 b was discovered in 2017 using the pulsar timing method, with observations from Parkes Observatory.
Pulsar timing detects planets around pulsars — rapidly spinning stellar remnants that emit radio pulses with clock-like precision. An orbiting planet makes the pulses arrive slightly early or late in a repeating pattern.
How Far Away Is PSR J2322-2650 b?
PSR J2322-2650 b is 750.2 light-years (230.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1276. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 13,203,520 years to make the journey.
The Host Star: PSR J2322-2650
PSR J2322-2650
- Mass
- 1.40 M☉
Planetary System
PSR J2322-2650 b is the only planet known to orbit PSR J2322-2650 so far.
PSR J2322-2650 b — Complete Data
| Mass (best estimate) | 252.64 Earth masses |
|---|---|
| Density | 1.84 g/cm³ (Earth: 5.51) |
| Orbital period | 0.32 days |
| Orbital distance | 0.010 AU |
| Eccentricity | 0.002 |
| Distance from Earth | 750.2 light-years (230.0 parsecs) |
| Constellation | Sculptor |
| Discovery method | Pulsar Timing |
| Discovery facility | Parkes Observatory |
| Discovery year | 2017 |
Data: NASA Exoplanet Archive, last updated 2017-12-19. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About PSR J2322-2650 b
Is PSR J2322-2650 b habitable?
PSR J2322-2650 b is not known to orbit within the habitable zone of PSR J2322-2650, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is PSR J2322-2650 b?
PSR J2322-2650 b is about 750 light-years from Earth in the constellation Sculptor. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 13,203,520 years to get there.
How long is a year on PSR J2322-2650 b?
One orbit around PSR J2322-2650 takes 0.3 Earth days — short enough that 1,131 of its years would fit into one Earth year.
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