英语词汇“astrometric binary”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

astrometric binary

noun Astronomy

A binary star system in which one companion is invisible, but is known to be present from its effect on measurements relating to the other.As technology has improved over time, a number of binaries originally identified as astrometric binaries have been upgraded to visual binary because of the sighting of the secondary in the system....

About a hundred astrometric binary candidates have been discovered by Hipparcos.
Thus Sirius was originally an astrometric binary, but is now a visual binary.

单词	astrometric binary
释义	astrometric binary noun Astronomy A binary star system in which one companion is invisible, but is known to be present from its effect on measurements relating to the other.As technology has improved over time, a number of binaries originally identified as astrometric binaries have been upgraded to visual binary because of the sighting of the secondary in the system.... About a hundred astrometric binary candidates have been discovered by Hipparcos. Thus Sirius was originally an astrometric binary, but is now a visual binary.
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