Orbit lunar

Earth, Moon and Lunar Module

Dalam astronomi, orbit lunar (juga dikenal sebagai orbit Selenocentric) mengacu pada orbit dari objek sekitar Bulan.

Sebagaimana digunakan dalam program luar angkasa, ini tidak merujuk kepada orbit Bulan tentang bumi, tetapi untuk orbit oleh berbagai pesawat ruang angkasa berawak atau tak berawak di sekitar bulan. Ketinggian di apoapsis (titik terjauh dari permukaan) untuk orbit bulan dikenal sebagai apolune, apocynthion atau aposelene, sedangkan periapsis (titik terdekat ke permukaan) dikenal sebagai perilune, pericynthion atau periselene.

Low orbit Lunar (LLO)-orbit di bawah 100 kilometer (62 mil) ketinggian-kepentingan tertentu dalam eksplorasi bulan, tetapi menderita dari efek gangguan gravitasi yang membuat paling tidak stabil, dan meninggalkan hanya beberapa kecenderungan orbital yang mungkin untuk orbit beku terbatas, berguna untuk jangka panjang tetap di LLO.

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