Mu Virginis

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μ Virginis
Virgo IAU.svg
Cercle rouge 100%.svg

Merak in Ursa Major.
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Virgo
Right ascension 14h 43m 03.6s
Declination −5° 39' 30"
Apparent magnitude (V) +3.87
Distance 60.9 ± 1.1 ly
(18.7 ± 0.3 pc)
Spectral type F2III
Other designations
Rijl al Awwa, 107 Virginis, BD-05 3936, FK5 545, Wo 9491, HD 129502, HIP 71957, HR 5487, SAO 140090.

Mu Virginis (μ Vir, μ Virginis) is a star in the constellation Virgo. It has the traditional name Rijl al Awwa.[1]

Rijl al Awwa is a yellow star of apparent magnitude 3.88 and spectral class F2 III[2] about 61 light years from Earth. This star has 1.7 times the mass of the Sun and 2.1 times the Sun's radius. It is shining with 9.8 times the Sun's luminosity, which it is radiating from its outer atmosphere at an effective temperature of 7,140 K.[2]

Etymology

The medieval name Rijl al Awwa is from the Arabic رجل العوى rijl al-‘awwa’ "The foot of the barking (dog)".

References

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