Assertion: star's magnitude | /r/HasAspect | magnitudes of brightness
Facets:
value: in ancient astronomy
type: TEMPORAL
value: usually as seen
type: OTHER
Source sentences:
text: magnitude - the a measure of the brightness of a ~ (usually as seen by an observer on Earth); in ancient astronomy, the naked eye stars were divided into 6 categories or magnitudes of brightness with 1st magnitude being the brightest and 6th the dimmest; ...