TWiki> Astrogrid Web>DocStore>OntologyDocs>BrownDwarfsforRegistry>BrownDwarfRegistryRequirements>BrownDwarfMetadataList>ProperMotion (2003-04-24, AnitaRichards)EditAttach
Proper motion is apparent movement of an astronomical object in the plane of the sky, usually measured in arcseconds per year. You need to know the distance to translate this into km/second. Proper motion is in a plane orthogonal to DopplerVelocity.

-- AnitaRichards - 24 Apr 2003

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Topic revision: r1 - 2003-04-24 - 18:58:22 - AnitaRichards
 
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