A gigametre is a unit of length in the metric system, equal to one billion meters, the SI base unit of length, hence to 1,000,000 km or approximately 621,370 miles. Gigametres (from the Greek words gigas = giant and metro = count/measure) are rarely seen in practical use, because they are too big for any terrestrial tasks. However, gigametres are sometimes used in astronomy to measure the distance of companion objects such as planets from their stars including our Sun.
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- Gigameter er en SI-enhet for måling av avstand. En gigameter er lik 10 meter, en milliard meter. Symbolet for gigameter er Gm. 1 AU er lik 149,6 Gm. Solens diameter er 1,4 Gm. Gjennomsnittlig radius av Merkurs bane er 57,9 Gm. Gjennomsnittlig radius av Jupiters bane er 778,4 Gm. Gjennomsnittlig radius av Ganymedes' bane (rundt Jupiter) er 1,07 Gm. Lyset tilbakelegger en avstand på 1 Gm i løpet av omtrent 3,34 s. Gigameter brukes så å si aldri i praksis ettersom enheten er for stor for noe formål på jorden, og fordi astronomer har lange tradisjoner for heller å bruke millioner kilometer og astronomiske enheter (AU). 1 gigameter er lik: 10 meter 1000 megameter 0,001 terrameter Og motsatt: 1 megameter = 0,001 gigameter 1 terrameter = 1000 gigameter
- A gigametre is a unit of length in the metric system, equal to one billion meters, the SI base unit of length, hence to 1,000,000 km or approximately 621,370 miles. Gigametres (from the Greek words gigas = giant and metro = count/measure) are rarely seen in practical use, because they are too big for any terrestrial tasks. However, gigametres are sometimes used in astronomy to measure the distance of companion objects such as planets from their stars including our Sun. One astronomical unit (AU) or Earth's average distance from the Sun is 149.6 Gm. Jupiter's average distance from the Sun is 778.5 Gm. The GJ 1214 b's average distance from the star GJ 1214 is 2.14 Gm, which is a smallest orbit of any known exoplanets. The mean diameter of our Sun is 1.391 Gm. The mean diameter of red supergiant star Betelgeuse is 1302 Gm.
- 京米(Gigametre)，亦作吉米，是公制的長度單位之一，為10米，因為這個單位對於地理學來說太大，而對於天文學來說太小，因此未被普遍使用。
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- 京米(Gigametre)，亦作吉米，是公制的長度單位之一，為10米，因為這個單位對於地理學來說太大，而對於天文學來說太小，因此未被普遍使用。
- Gigameter er en SI-enhet for måling av avstand. En gigameter er lik 10 meter, en milliard meter. Symbolet for gigameter er Gm. 1 AU er lik 149,6 Gm. Solens diameter er 1,4 Gm. Gjennomsnittlig radius av Merkurs bane er 57,9 Gm. Gjennomsnittlig radius av Jupiters bane er 778,4 Gm. Gjennomsnittlig radius av Ganymedes' bane (rundt Jupiter) er 1,07 Gm. Lyset tilbakelegger en avstand på 1 Gm i løpet av omtrent 3,34 s.
- A gigametre is a unit of length in the metric system, equal to one billion meters, the SI base unit of length, hence to 1,000,000 km or approximately 621,370 miles. Gigametres (from the Greek words gigas = giant and metro = count/measure) are rarely seen in practical use, because they are too big for any terrestrial tasks. However, gigametres are sometimes used in astronomy to measure the distance of companion objects such as planets from their stars including our Sun.
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