HD 177808
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.63[1] |
| Characteristics | |
| Spectral type | M0III[3] |
| B−V Template:Engvar | Script error: No such module "val".[1] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[1] km/s |
| Proper motion (μ) | RA: +75.049[2] mas/yr Dec.: −76.913[2] mas/yr |
| Parallax (π) | 5.8624±0.0556 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.75[1] |
| Details | |
| Mass | 4.8[2] Template:Solar mass |
| Radius | 48[2] Template:Solar radius |
| Luminosity | 637[2] Template:Solar luminosity |
| Surface gravity (log g) | 1.17[2] cgs |
| Temperature | 4,452[2] K |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[4] | |
| Database references | |
| SIMBAD | data |
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HD 177808 is a 6th magnitude star in the constellation Lyra, approximately 556 light years away from Earth. It is a solitary[5] red giant star of the spectral type M0III, meaning it possesses a surface temperature of around 3,940 kelvins. It is therefore much larger and brighter than the Sun, yet cooler in comparison.
References
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