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Proper NameNone
Bayer DesignationRho Tucanae
Flamsteed NumberNone
HR (BSC)187
Right Ascension0h 42m 28s
Declination-65° 28' 5"
Distance136 light years
42 parsecs
MagnitudeApparent: +5.4
Absolute: +2.3
Spectral ClassF6 Bright Yellow Dwarf
Optimum VisibilityOctober (Usually visible from southern latitudes)
NotesRho Tucanae is a binary system, in which the primary component is bright yellow dwarf somewhat more massive than the Sun. In a rapid, close orbit around this primary star is a much less massive companion, a tiny dwarf with approximately one third the mass of the Sun, which orbits the primary over a period of just under five days.