HD 177808
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Lyra |
| Right ascension | 19h 4m 57.8751s |
| Declination | +31° 44' 38.658" |
| Apparent magnitude (V) | 5.636 |
| Characteristics | |
| Spectral type | M0III |
| U−B color index | +1.90 |
| B−V color index | +1.54 |
| Astrometry | |
| Radial velocity (Rv) | 6.0 km/s |
| Proper motion (μ) | RA: 75.55 mas/yr Dec.: -76.41 mas/yr |
| Parallax (π) | 5.38 ± 0.57 mas |
| Distance | approx. 610 ly (approx. 190 pc) |
| Other designations | |
HD 177808 is a 6th magnitude star in the constellation Lyra, approximately 610 light years away from Earth. It is a red giant star of the spectral type M0III, meaning it possesses a surface temperature of around 3,500 kelvins. It is therefore much larger and brighter than our Sun, yet cooler in comparison.[1]
[edit] References
- ^ a b "Simbad Query Result". Simbad. http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+177808&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id. Retrieved October 16, 2007.
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