Enceladus, a moon of Saturn, has one of the highest known optical albedos of any body in the Solar System, with an albedo of 0.99.
ɛnsˈɛlædəs, ɐ mˈuːn ʌv sˈæɾɜːn, hɐz wˈʌn ʌvðə hˈaɪɪst nˈoʊn ˈɑːptɪkəl ælbˈiːdoʊz ʌv ˌɛni bˈɑːdi ɪnðə sˈoʊlɚ sˈɪstəm, wɪð ɐn ælbˈiːdoʊ ʌv zˈiəɹoʊ.nˈaɪnti nˈaɪn.