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Empirical Calibration of Absolute Magnitudes for G-K Dwarfs and Subdwarfs in the Vilnius Photometric System
Calibrations giving l M_V as functions of [Fe/H] and various intrinsiccolor indices of the Vilnius photometric system are derived for G--Kdwarfs and subdwarfs. The calibrations are based only on the stars withknown trigonometric parallaxes and allow one to estimate the absolutemagnitudes with a standard deviation of +/- 0.6 mag. Comparisons of ourcalibrations with the absolute magnitude estimates in the literatureshow a satisfactory agreement.
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Observation and Astrometry data
| Constellation: | Hydra |
| Right ascension: | 12h31m08.25s |
| Declination: | -31°38'08.3" |
| Apparent magnitude: | 7.888 |
| Distance: | 98.717 parsecs |
| Proper motion RA: | -48.9 |
| Proper motion Dec: | -7.8 |
| B-T magnitude: | 8.199 |
| V-T magnitude: | 7.914 |
Catalogs and designations:
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