妊神星

妊神星的自转并不是问题，但它和其他星球形状不同。

The rotation itself would not cause too many problems , but Haumea is not shaped like any other planet .

妊神星不仅自转特性非常有趣，还有两颗卫星相随，即妊卫一和妊卫二。

across.Not only does Haumea possess some of the most interesting rotational properties , it also has two moons , Hi'iaka and Namaka .

因妊神星于2004年12月28日被发现，在正式命名前它曾被叫作“圣诞老人”。

Before it was officially named , 136108 Haumea was known as " Santa , " due to being discovered on December 28 , 2004 .

当然，这两颗卫星的赤道长度自然不能同妊神星相提并论，毕竟它们的自转速度并不足以使其膨胀。

The elongated equators of these moons cannot be explained in the same way as Haumea , since they do not spin fast enough to bulge .

它的公转速度比太阳系中其他已知星体都要快，妊神星上的一天按照我们的计时标准只有3.9个小时，所以在开始的一段时间内，科学家们很难对它进行测量。

Scientists initially found it hard to take measurements of Haumea because of its extremely rapid rotation , faster than any other known body in the solar system - a day is only 3.9 hours long .