PSR J1719-1438 b
PSR J1719-1438 b is a hot Jupiter orbiting PSR J1719-1438 in the constellation Serpens. It lies about 3,914 light-years from Earth and was discovered in 2011 using the pulsar timing method.
Is PSR J1719-1438 b in the Habitable Zone?
The position of PSR J1719-1438 b relative to the habitable zone of PSR J1719-1438 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on PSR J1719-1438 b — one full orbit around PSR J1719-1438 — lasts just 2.2 hours, shorter than Mercury's 88-day year. It orbits at an average distance of 0.004 AU — closer to its star than Mercury is to the Sun. Its orbit is mildly elliptical (eccentricity 0.06).
How Was PSR J1719-1438 b Discovered?
PSR J1719-1438 b was discovered in 2011 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 J1719-1438 b?
PSR J1719-1438 b is 3,913.9 light-years (1,200.0 parsecs) from Earth. Light arriving here tonight left the planet about 3,914 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 68,884,640 years to make the journey.
The Host Star: PSR J1719-1438
PSR J1719-1438
- Surface temperature
- 4,500 K (Sun: 5,772 K)
- Mass
- 1.40 M☉
- Age
- 12.5 billion years (Sun: 4.6)
Planetary System
PSR J1719-1438 b is the only planet known to orbit PSR J1719-1438 so far.
PSR J1719-1438 b — Complete Data
| Mass | 382.80 Earth masses (1.200 Jupiter masses) |
|---|---|
| Density | 23.00 g/cm³ (Earth: 5.51) |
| Orbital period | 0.09 days |
| Orbital distance | 0.004 AU |
| Eccentricity | 0.060 |
| Distance from Earth | 3,913.9 light-years (1,200.0 parsecs) |
| Constellation | Serpens |
| Discovery method | Pulsar Timing |
| Discovery facility | Parkes Observatory |
| Discovery year | 2011 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About PSR J1719-1438 b
Is PSR J1719-1438 b habitable?
PSR J1719-1438 b is not known to orbit within the habitable zone of PSR J1719-1438, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is PSR J1719-1438 b?
PSR J1719-1438 b is about 3,914 light-years from Earth in the constellation Serpens. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 68,884,640 years to get there.
How long is a year on PSR J1719-1438 b?
One orbit around PSR J1719-1438 takes 0.1 Earth days — short enough that 4,027 of its years would fit into one Earth year.
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