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Juba, Gamma1,2 Leonis, 41 Leonis

Proper NamesAlgieba, Juba
Bayer DesignationGamma1,2 Leonis
Flamsteed Number41 Leonis
HR (BSC)4057 (A), 4058 (B)
HD89484 (A), 89485 (B)
Right Ascension10h 19m 58s (A), 10h 19m 59s (B)
Declination+19° 50' 29" (A), +19° 50' 27" (B)
Distance130 light years
40 parsecs
MagnitudeApparent: +2.2 (A), +3.5 (B)
Absolute: -0.8 (A), +0.5 (B)
Spectral ClassK1III Orange Giant (A), G7III Yellow Giant (B)
Planets in this systemAlgieba b (Gamma1 Leonis b), gas giant
Optimum VisibilityMarch
NotesThis pair of giant stars circle one another over a period of some 510 years. The orange star (which is about twice the size of its yellow companion) has at least one planet in orbit, a gas giant designated Algieba b or Gamma 1 Leonis b.


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