Andromeda
Log inJoin

White dwarf

40 Eridani B

Also Omicron² Eridani B · WD 0413-077

Open in Ouranos

The first white dwarf ever recognised, part of a triple star system in Eridanus.

Measured

Distance
16 light-years
Constellation
Eridanus
Position (J2000)
RA 4h 15m 22s, Dec −7.66°

How far, from the Sun

16.3 light-years. To cross it:

  • Light16.3 years
  • Voyager 1's speed290,000 years
  • Driving at 100 km/h176 million years

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

Facts

  • Henry Norris Russell, Edward Pickering and Williamina Fleming recognised its strange nature in 1910.
  • It shares its system with an orange dwarf and a red dwarf.
  • It has about 0.57 Suns of mass in a body about 1.4 times Earth's width.

Where this comes from

  • Gaia DR3 parallax 199.6911 ± 0.0512 mas, Gaia DR3 3195919254111315712 (Gaia Collaboration 2023, A&A 674, A1)

Every catalogue Ouranos draws is credited on the credits page.