Lambda Mensae

λ Mensae

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Mensa
Right ascension	05^h 47^m 48.13340^s[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

1. "Lambda Mensae". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 29 January 2014.