13point8All planet systems
1 known planet · 1,647 light years

PSR B0329+54

PSR B0329+54 is a star 1,647 light years away, with 1 confirmed planet. Distances and orbital speeds are to scale; the star and planets are enlarged so you can see them.

Day 0
habitable zone (estimate)planet orbits

Green band: where liquid water could exist on a planet's surface. Drag to turn the system, pinch or scroll to zoom.

The star

The star

PSR B0329+54

Type
star
Mass
1.44 × the Sun

The planets

PSR B0329+54

PSR B0329+54 b

Year
27.8 years
Distance from star
10.3 AU
Mass
at least 2 Earths
Size
1.2 × Earth
Found
2017, pulsar timing (Multiple Facilities)
Outside the habitable zone

Masses found by the wobble method are minimums, because the orbit's tilt is unknown. Temperatures are equilibrium estimates for a bare planet, before any atmosphere.

How we know

Pulsar Timing

Discovered by pulsar timing.

Sources

  1. Planet and star parameters: NASA Exoplanet Archive, Planetary Systems Composite Parameters, retrieved 1 Nov 2026. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.
  2. Position: HYG Database v4.1 (CC BY-SA 4.0).
  3. Habitable zone: a simple estimate from the star's brightness (√L × 0.95 to 1.67 AU), shown as a guide.
← Back to the 100-light-year map