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Alkalurops

Mu1,2 Boötis, 51 Boötis

Proper NameAlkalurops
Bayer DesignationMu1 Boötis (A), Mu2 Boötis (B)
Flamsteed Number51 Boötis
HR (BSC)5733 (A), 5734 (B)
HD137391 (A), 137392 (B)
ConstellationBoötes
Right Ascension15h 24m 29s (A)
15h 24m 31s (B)
Declination+37° 22' 38" (A)
+37° 20' 50" (B)
Distance116 light years / 36 parsecs (A)
118 light years / 36 parsecs (B)
MagnitudeApparent: +4.3 (A), +6.9 (B)
Absolute: +1.6 (A), +3.9 (B)
Spectral ClassF2IVa Bright Yellow Subgiant (A)
G0V Yellow Dwarf (B)
Optimum VisibilityMay / June

The centred star in this image is the subgiant Alkalurops A or Mu1 Boötis. Slightly to the south is its companion, which is in fact a binary star in its own right comprising a pair of yellow dwarfs, Alkalurops B and C. Imagery provided by Aladin sky atlas

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