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HR 999

BSC 999, HD 20644

Proper NameNone
Bayer DesignationNone
Flamsteed NumberNone
HR (BSC)999
Right Ascension3h 20m 20s
Declination+29° 2' 54"
Distance543 light years
166 parsecs
MagnitudeApparent: +4.46
Absolute: -1.65
Spectral ClassK3IIIaBa0.5 orange giant
Optimum VisibilityNovember / December
NotesHR 999 or HD 20644 is fourth-magnitude star in the northeastern parts of the constellation Aries. The primary star is an evolved orange giant, whose spectrum shows relatively high levels of barium in its atmosphere. This unusual chemistry may imply the existence of an otherwise undetected white dwarf companion as a source for the high metallicity of the giant star.

Imagery provided by Aladin sky atlas