Gliese 754
Gliese 754 is a dim star in the southern constellation of Telescopium. It has an apparent visual magnitude of 12.25, which requires a telescope to view. The star is located at a distance of 19.3 light-years from the Sun based on parallax, and it is drifting further away with a radial velocity of +7 km/s. It is one of the hundred closest stars to the Solar System. Calculations of its orbit around the Milky Way showed that it is eccentric, and indicate that it might be a thick disk object.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Telescopium |
| Right ascension | 19h 20m 47.98349s |
| Declination | −45° 33′ 29.6292″ |
| Apparent magnitude (V) | 12.25 |
| Characteristics | |
| Spectral type | M4V |
| Astrometry | |
| Radial velocity (Rv) | +6.8 km/s |
| Proper motion (μ) | RA: +659.330 mas/yr Dec.: −2,897.035 mas/yr |
| Parallax (π) | 169.2351 ± 0.0588 mas |
| Distance | 19.272 ± 0.007 ly (5.909 ± 0.002 pc) |
| Details | |
| Mass | 0.173 M☉ |
| Radius | 0.205 R☉ |
| Luminosity | 0.005 L☉ |
| Temperature | 3,202±100 K |
| Metallicity [Fe/H] | −0.169 dex |
| Rotation | 132.651 days |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gliese 754 Location of Gliese 754 in the constellation Telescopium | |
The stellar classification of Gliese 754 is M4V, indicating that this is a small red dwarf star on the core hydrogen fusing main sequence. It has 17% of the mass of the Sun and 21% of the Sun's radius. The star is fully convective and is a source of X-ray emission. It is rotating slowly with a period of about 133 days. The metallicity is sub-solar, indicating it has a lower abundance of heavy elements compared to the Sun. It is radiating just 0.5% of the luminosity of the Sun from its photosphere at an effective temperature of around 3,202 K.