Thian-bûn tan-ūi

Thian-bûn tan-ūi (AU, au, a.u., ū-sî ua) sī niû tn̂g-té ê 1-ê tan-ūi, iok-lio̍k téng-î Tē-kiû kàu Ji̍t-thâu ê pêng-kin kī-lî. Hiān-chú-sî hông chiap-siū ê ta̍t sī 149 597 870 691 ± 30 m (tāi-iok 1-ek 5-chheng kong-lí).

Bureau International des Poids et Mesures kiàn-gī iōng "ua" chò tan-ūi ê hû-hō, m̄-koh Kok-chè Thian-bûn Chó·-ha̍p (International Astronomical Union) kiàn-gī iōng "au", ah ISO 31-1 iōng "AU". Tī Eng-gí ûi-chú ê kok-ka khah koàn-sì iōng "au" a̍h-sī "AU".

hián lūn pian SI tan-ūi Authority: International System of Units (BIPM) Ki-pún tan-ūi ampere bió candela kelvin kong-chhioh kong-kin mol Ián-seng tan-ūi becquerel bó͘-lú-to͘h coulomb farad gray henry hertz joule katal liap-sī lumen lux newton óa ohm pascal radian siemens sievert steradian tesla weber Pèng-iōng tan-ūi bar dalton decibel electronvolt hun-cheng kak-tō͘ kang kong-khéng li̍p minute of arc neper second of arc thian-bûn tan-ūi tiám-cheng tonne goân-chú tan-ūi chū-jiân tan-ūi Kî-thaⁿ Tan-ūi ê oāⁿ-sǹg SI jī-thâu Proposed redefinitions Systems of measurement Lūi-pia̍t