 It rotates so rapidly, with a period of just 9 hours – compared to 25 days for the Sun – that it is significantly oblate, having an equatorial diameter more than 20 percent greater than its polar diameter.Among the authors of the fictional works in this article, not excluding Hal Clement (who imagined dramatic equatorial bulges for many of his "planets"), only Jerry Oltion (1999) has employed or even acknowledged the striking physical peculiarities of this star (see "Biosphere", below).There is no evidence that the system is home to any extrasolar planets.