Lambda Mensae
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| 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 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.
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