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单词 periapsis
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Examples ofperiapsis

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As a planet approachesperiapsis, the planet will increase in speed, or velocity.
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Particularly at eachperiapsis, the object experiences atmospheric drag, losing energy.
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For near-circular orbits, it is hard to find theperiapsisin the first place (and truly circular orbits have noperiapsisat all).
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The last time they were atperiapsiswas in 1836.
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The ecliptic longitudes of theperiapsisof the satellite and the planet are locked.
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The initial, high eccentricity orbits may also be a source of gravitational waves, emitting a short burst as the compact object passes throughperiapsis.
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It had aperiapsisof 171 km and an apoapsis of 3,524 km and an orbital period of 619 minutes.
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These variations are connected with the variations of the ring width, which is 19.7 km at theperiapsisand 96.4 km at the apoapsis.
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When gradually making an elliptic orbit smaller, it means applying thrust each time when near theperiapsis.
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With increasing release height the orbit becomes less eccentric as bothperiapsisand apoapsis increase, becoming circular at geostationary level.
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The angular rate is faster nearerperiapsisand slower near apoapsis.
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Thereafter, theperiapsiswas allowed to rise to a maximum of and then fall, to conserve fuel.
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The point on the orbit closest to the attracting body is theperiapsis.
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When gradually making an elliptic orbit larger, it means applying thrust each time when near theperiapsis.
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So to get the most kinetic energy from the burn, the burn must occur at the vehicle's maximum velocity, atperiapsis.
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Adding the argument ofperiapsisto the longitude of the ascending node gives the longitude of theperiapsis.
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A line drawn fromperiapsisto apoapsis is the line-of-apsides.
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For the most efficient example mentioned above, targeting an inclination at apoapsis also changes the argument ofperiapsis.
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A straight line connecting theperiapsisand apoapsis is the "line of apsides".
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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更新时间:2024/12/28 1:33:44