Lambda Mensae

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λ Mensae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Mensa
Right ascension 05h 47m 48.13340s[1]
Declination −72° 42′ 08.0993″[1]
Apparent magnitude (V) 6.54 [1]
Characteristics
Spectral type K0III[1]
Apparent magnitude (B) 7.614
Apparent magnitude (J) 4.820
Apparent magnitude (H) 4.163
Apparent magnitude (K) 4.119
B−V color index 1.071
J−H color index 0.657
J−K color index 0.701
Variable type  ???
Astrometry
Radial velocity (Rv) +14.5 km/s
Proper motion (μ) RA: -6.80 mas/yr
Dec.: +24.48 mas/yr
Parallax (π) 7.21[1] ± 0.34[1] mas
Distance 385.80 ly
(118.34 pc)
Absolute magnitude (MV) 1.174
Details
Mass 1.5-3 M
Radius 7.49 R
Luminosity (bolometric) 39.7 L
Luminosity (visual, LV) 26.9 L
Temperature 5,300 K
Other designations
Lambda Mensae, λ Mensae, HD 39810, HR 2062, 2MASS J05474813-7242080, HIP 27369

Lambda Mensae (λ Men, λ Mensae) is a medium mass orange giant star in the southern constellation Mensa.[1] Though it has the designation Lambda, it is actually the twenty-fourth brightest star in the constellation and not the eleventh. Parallax calculations put this star at a distance of 385 light-years or 118 parsecs. From this and its apparent magnitude of 6.54, it can be said that this star has a luminosity of 27 times that of the Sun (40 times bolometric). The mass of the star is estimated at 1.5 to 3 solar masses and it has a radius of 7.49 solar radii.

References[edit]

  1. ^ a b c d e f g "Lambda Mensae". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 29 January 2014.