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Nembus

Upsilon Persei, 51 Andromedae

Proper NameNembus
Bayer DesignationUpsilon Persei
Flamsteed Number51 Andromedae
HR (BSC)464
HD9927
ConstellationAndromeda
Right Ascension1h 39m 12s
Declination+48° 43' 38"
Distance177 light years
54 parsecs
MagnitudeApparent: +3.6
Absolute: +1.3
Spectral ClassK3III Orange Giant
Optimum VisibilityOctober / November (Usually visible from northern latitudes)
NotesNembus lies close to the border between Andromeda and Perseus, and is one of a handful of stars that are placed in different constellations by different stellar classifications. According to modern constellation boundaries this star lies within Andromeda, but the traditional Bayer system designates it Upsilon Persei.

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