:INFO
Gas giant around WD 1856+534
It is 0.93 times Jupiter's radius, closest in size to Jupiter, and 4386.1 times Earth's mass. A year there lasts 1.41 days, on an orbit 19 times closer to its star than Mercury is to the Sun. Its equilibrium temperature is 163 K, colder than anywhere on Earth. The host star WD 1856+534 runs at 4710 K with 0.52 times the Sun's mass.

:STATS
[icon:TARGET] Radius | 10.40 Earth radii
[icon:CHART] Mass | 4386.1 Earth masses
[icon:FIRE] Equilibrium temperature | 163 K (measured)
[icon:CLOCK] One year | 1.41 days
[icon:BOLT] Orbit radius | 0.0204 AU
[icon:STAR] Host star | WD 1856+534 at 4710 K
[icon:USERS] Distance | 81 light-years
[icon:TRENDING_DOWN] Starlight blocked | 5285.612% at each transit

:CHECKLIST
Where this planet stands on each testable criterion
[ ] Within the zone where liquid water could persist. No.
[ ] A measured mass, not just a radius. Yes.
[ ] A measured temperature rather than one derived from the star. Yes.
[ ] Any detection of an atmosphere. Not recorded in the archive.

:PATH
What you get from the shadow
Block a known fraction of a known star and you have measured a width.

:NOTE
Two independent measurements sit behind this page: a dip in starlight for the size, and something else entirely for the mass. Together they make a density.

:NOTE
Found by Transiting Exoplanet Survey Satellite (TESS) in 2020. TESS scans most of the sky in 27-day stretches, so it favours bright nearby stars and short orbits over the faint distant ones Kepler specialised in.

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/WD%201856+534%20b
NASA Exoplanet Archive: source data, including the values not used here