Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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noun
A highly elliptical orbit with an eccentricity of 0.74, inclination of 63.4 degrees, an argument of perigee of −90 degrees, and an orbital period of half a sidereal day, around the Earth.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
By analogy, the equivalent orbit for the southern hemisphere, with the argument of perigee changed to +90 degrees.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Both the northern and southern hemisphere orbits for the Earth.
Definition source: English Wiktionary via Wiktextract
Usage: broadly
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
By analogy, equivalent orbits for other bodies, which provide low apparent motion across the dome of the sky at apoapsis, allowing long duration communications/observation with low tracking rates at polar latitudes.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The orbits around Earth and other bodies with these qualities.
Definition source: English Wiktionary via Wiktextract
Usage: broadly
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From Russian мо́лния (mólnija, “lightning”) + orbit. The Russian word was used as the name for a series of Soviet/Russian communications satellites, and the orbits which they were placed in.
