Molniya orbitn.

Brit.

/ˈmɒlnɪə ˌɔːbɪt/,

/mɒlˈniː(j)ə ˌɔːbɪt/, U.S.

/ˈˌmɑlˈˌni(j)ə ˌɔrbət/

Origin: From a proper name, combined with an English element. Etymons: proper name Molniya , orbit n.

Etymology: < Molniya, the name of communication satellites launched under a Russian space programme, and of the programme itself ( < Russian molnija lightning) + orbit n.

Astronautics.

A highly elliptical orbit inclined at an angle of about 65° to the plane of the equator, such as is occupied by the Russian Molniya satellites.The orbits are such that the satellite passes close to the earth near the South Pole, travelling fast; and at a great distance from the earth near the North Pole, travelling slowly. This results in the satellite spending most of each 12-hour orbit over the northern hemisphere, making it more useful for northern hemisphere applications.

ΘΚΠ

society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft > orbiting > types of orbit

parking orbit1941

polar orbit1956

transfer orbit1961

Molniya orbit1981

1981 J. M. Ruddy in Rec. Internat. Conf. Communications (IEEE) 3 54.3.1/2 Molniya orbits are a special case of elliptic orbit wherein the period is selected to be 12 hours. Proper selection of the inclination, at 63.4° removes the aspidal precession.

1986 C. Sagan Contact iv. 76 It's not down here on Earth, and its probably isn't from an artificial satellite in a Molniya orbit, although we should check that.

1991 New Scientist 2 Nov. 18/2 The paths they follow, known as Molniya orbits, pass close to the Earth at the South Pole and are more distant at the North Pole.

1997 New Scientist 15 Feb. 24 Geostationary, polar and Molniya orbits—the latter a higly eccentric type inclined at 65° to the plane of the equator.

This is a new entry (OED Third Edition, September 2002; most recently modified version published online March 2022).

单词	molniya orbit
释义	Molniya orbitn. Brit. /ˈmɒlnɪə ˌɔːbɪt/, /mɒlˈniː(j)ə ˌɔːbɪt/, U.S. /ˈˌmɑlˈˌni(j)ə ˌɔrbət/ Origin: From a proper name, combined with an English element. Etymons: proper name Molniya , orbit n. Etymology: < Molniya, the name of communication satellites launched under a Russian space programme, and of the programme itself ( < Russian molnija lightning) + orbit n. Astronautics. A highly elliptical orbit inclined at an angle of about 65° to the plane of the equator, such as is occupied by the Russian Molniya satellites.The orbits are such that the satellite passes close to the earth near the South Pole, travelling fast; and at a great distance from the earth near the North Pole, travelling slowly. This results in the satellite spending most of each 12-hour orbit over the northern hemisphere, making it more useful for northern hemisphere applications. ΘΚΠ society > travel > air or space travel > space flight > [noun] > a space shot or flight > course or trajectory of spacecraft > orbiting > types of orbit parking orbit1941 polar orbit1956 transfer orbit1961 Molniya orbit1981 1981 J. M. Ruddy in Rec. Internat. Conf. Communications (IEEE) 3 54.3.1/2 Molniya orbits are a special case of elliptic orbit wherein the period is selected to be 12 hours. Proper selection of the inclination, at 63.4° removes the aspidal precession. 1986 C. Sagan Contact iv. 76 It's not down here on Earth, and its probably isn't from an artificial satellite in a Molniya orbit, although we should check that. 1991 New Scientist 2 Nov. 18/2 The paths they follow, known as Molniya orbits, pass close to the Earth at the South Pole and are more distant at the North Pole. 1997 New Scientist 15 Feb. 24 Geostationary, polar and Molniya orbits—the latter a higly eccentric type inclined at 65° to the plane of the equator. This is a new entry (OED Third Edition, September 2002; most recently modified version published online March 2022). < n.1981
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