Beid Omicron1 Eridani

Stellar classification



  • X 32
  • Y -75
  • Z -91
→ Sol: 122

Object type

  • Variable Star of delta Sct type
  • Star
  • Infra-Red source
  • UV-emission source
  • Variable Star
simbad:* omi01 Eri


Omicron1 Eridani, also named Beid, is a star in the constellation of Eridanus. With an apparent visual magnitude of 4.04, it is visible to the naked eye on a clear, dark night. Based upon parallax measurements, it lies approximately 122 light-years from the Sun.

Omicron1 Eridani is an evolved F-type giant star with a stellar classification of F0 III. It is a Delta Scuti variable star that undergoes non-radial pulsations, with a variation of just 0.03 magnitude over a period of 0.0747 days. The star is spinning rapidly with a projected rotational velocity of 108.1 km/s and a rotation period of less than around 1.9 days. This is creating an equatorial bulge that is 11% wider than the polar radius. Omicron1 Eridani has nearly double the mass of the Sun, 3.7 times the Sun's radius, and shines with 27 times the solar luminosity from an outer atmosphere at an effective temperature of 6,963 K.

This article uses material from the Wikipedia article "Omicron1 Eridani", which is released under the Creative Commons Attribution-Share-Alike License 3.0.