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White dwarf

Stein 2051 B

Also GJ 169.1 B · EGGR 180

Open in Ouranos

A white dwarf whose mass was weighed in 2017 by how much it deflected the light of a star behind it, the effect predicted by Einstein's relativity.

Measured

Distance
18 light-years
Constellation
Camelopardalis
Position (J2000)
RA 4h 31m 13s, Dec +58.98°

How far, from the Sun

18 light-years. To cross it:

  • Light18 years
  • Voyager 1's speed320,000 years
  • Driving at 100 km/h194 million years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • Its mass came out at about two-thirds of the Sun's (Sahu et al. 2017, Science 356, 1046).
  • It orbits the red dwarf Stein 2051 A.

Where this comes from

  • Gaia DR3 parallax 181.2730 ± 0.0203 mas, Gaia DR3 470826482637310848 (Gaia Collaboration 2023, A&A 674, A1)
  • This research has made use of the SIMBAD database, CDS, Strasbourg, France (Wenger et al. 2000, A&AS 143, 9).
  • This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier).

Every catalogue Ouranos draws is credited on the credits page.