WD 1856+534 b
A confirmed exoplanet orbiting WD 1856+534.
Compared with Earth
- Size
- About 10 times Earth's width.
- Mass
- About 4,386 times Earth's mass.
- Temperature
- About -110 °C (-166 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 18% of the starlight Earth gets from the Sun.
- Year
- A year here lasts about 1.4 Earth days.
Planet
- Radius
- 10.4 × Earth
- Mass
- 4,386 × Earth
- Density
- Unknown
- Equilibrium temperature
- 163 K
- Starlight received
- 0.181 × Earth
- Orbital period
- 1.408 days
- Average distance from its star
- 0.0204 AU
Star
- Host star
- WD 1856+534
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,710 K
- Radius
- 0.0131 × Sun
- Mass
- 0.518 × Sun
- Age
- 7.93 billion years
System
- Distance from Earth
- 80.68 light-years (24.74 parsecs)
- Stars in system
- 3
- Known planets
- 1
Discovery
- Year
- 2020
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.