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Astrometry

by Lewis Carroll
written by Lewis Carroll

Astrometry is a branch of astronomy where the coordinates of celestial bodies on the celestial sphere are studied and continuously monitored. For a long time astrometry was the only method of making corrections of the current time before the advent of atomic clocks. This was accomplished by determining time of meridian passage by stars with well-defined coordinates. Astrometry also made it possible to discover the proper motion of stars, to determine the orbital elements of the planets of the solar system and the Moon. The results, obtained by astrometric methods, contained in astronomical catalogs, are used in addressing geodetic and navigational issues.

Lewis Carroll writes about military space programmes, policy, technology and the industry that supports the sector. He spent nearly two decades covering the military, the Pentagon, Congress and the defence industry as a journalist for Space Chatter magazine.

Lewis Carroll writes about military space programmes, policy, technology and the industry that supports the sector. He spent nearly two decades covering the military, the Pentagon, Congress and the defence industry as a journalist for Space Chatter magazine.

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