幸神星是太阳系奥尔特云内的一颗假设的气态巨行星的昵称。
Tyche is the nickname given to a hypothesized gas giant planet located in the Solar System's Oort cloud.
然而，鸟神星的轨道面与黄道面的倾角却比冥王星要大得多。
Makemake, however, has an orbit much more tilted to the ecliptic plane of the planets than Pluto.
它不是孤独的——最近还发现了马克·马克星、妊神星和厄里斯星。
It is not alone - recent additions include Makemake, Haumea and Eris.
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