静 止 衛 星

せいしえいせい

noun

geostationary satellite

1. geostationary satellite

A satellite that orbits the Earth at the same rate as the planet's rotation, so it appears to stay fixed above one point on the equator. Used for weather observation and communications.

気象(きしょう)衛星(えいせい)の多(おお)くは静止衛星(せいしえいせい)だ。

Many weather satellites are geostationary satellites.

静止衛星(せいしえいせい)は赤道(せきどう)の上空(じょうくう)にある。

Geostationary satellites are located above the equator.

静止衛星(せいしえいせい)を使(つか)えば、同(おな)じ地域(ちいき)を常(つね)に観測(かんそく)できる。

Using a geostationary satellite, you can continuously observe the same region.

Composed of 静止(せいし) (standing still) + 衛星(えいせい) (satellite). From the ground, such a satellite seems motionless because it circles the Earth once per day, matching the planet's rotation.

Common collocations

静止衛星(せいしえいせい)軌道(きどう): geostationary orbit
気象(きしょう)静止衛星(せいしえいせい): geostationary weather satellite

Similar words

人工(じんこう)衛星(えいせい): artificial satellite — the general category
周回(しゅうかい)衛星(えいせい): orbiting satellite — moves relative to the ground

Related Words

Compare: 人工衛星(じんこうえいせい) (artificial satellite)

general

Added 2026.7.15 21:19 · Revised 2026.9.2 13:02

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