What is Achernar?
Q: What is Achernar?
A: Achernar is the name of the primary component of the binary system designated Alpha Eridani (α Eridani).
Q: What is Alpha Eridani?
A: Alpha Eridani is a binary system.
Q: Why is Alpha Eridani the hottest and bluest in color?
A: Alpha Eridani is the hottest and bluest in color because of Achernar being of spectral type B.
Q: What is the unusual characteristic of Achernar's rotational velocity?
A: Achernar has an unusually rapid rotational velocity.
Q: What is the consequence of Achernar's rapid rotational velocity?
A: The consequence of Achernar's rapid rotational velocity is that it becomes oblate in shape.
Q: What is the secondary component of Alpha Eridani?
A: The secondary component of Alpha Eridani is smaller and of spectral type A.
Q: What is the distance between the secondary component and Achernar?
A: The secondary component of Alpha Eridani orbits Achernar at a distance of about 12 astronomical units (AU).
