Information | |
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has gloss | eng: Highly elliptical orbit (HEO) is an elliptic orbit characterized by a relatively low-altitude perigee and an extremely high-altitude apogee. These extremely elongated orbits can have the advantage of long dwell times at a point in the sky during the approach to and descent from apogee. Visibility near apogee can exceed twelve hours of dwell at apogee with a much shorter and faster-moving perigee phase. Bodies moving through the long apogee dwell can appear still in the sky to the ground when the orbit is at the right inclination, where the angular velocity of the orbit in the equatorial plane closely matches the rotation of the surface beneath. This makes these elliptical orbits useful for communications satellites. |
lexicalization | eng: Highly elliptical orbit |
instance of | (noun) the path of an electron around the nucleus of an atom electron orbit, orbit |
Meaning | |
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Finnish | |
has gloss | fin: Hyvin elliptinen kiertorata (Highly Elliptical Orbit, HEO) on satelliittien kiertorata esimerkiksi Maan ympäri, jossa perigeum on matala ja apogeum on hyvin korkea. Apogeumin luona satellitti liikkuu ja muuttaa asentoaan hitaasti kiintotähtien ja Maan suhteen. Siksi se soveltuu tietoliikenteeseen ja esimerkiksi röntgentähtitieteeseen. |
lexicalization | fin: Hyvin elliptinen kiertorata |
Norwegian Nynorsk | |
has gloss | nno: HEO (frå engelsk: High Inclined Earth Orbit) er ei satellittbane med høg inklinasjon, det vil seie at baneplanet ligg med ein stor vinkel i høve ekvatorplanet til jorda. Slike baner har ofte stor eksentrisitet, slik at får god dekning av områder på jorda med høg breiddegrad (langt nord eller langt sør). Ein kan få banene til å vere geosynkrone (ikkje geostasjonære). Ei spesiell bane kalla molniyabana er ei slik bane. |
lexicalization | nno: HEO |
Chinese | |
has gloss | zho: 高椭圆轨道(Highly Elliptical Orbit,缩写为HEO)地球轨道的一种,常为航天器所使用。 |
lexicalization | zho: 高椭圆轨道 |
Media | |
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media:img | Sirius orbit Earth.JPG |
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