HD 177809
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The topic of this article may not meet Wikipedia's notability guideline for astronomical objects. (January 2021) |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lyra |
Right ascension | 19h 04m 58.2868s |
Declination | +30° 44′ 00.224″ |
Apparent magnitude (V) | 6.096 |
Characteristics | |
Spectral type | M2III |
B−V color index | +1.549 |
Astrometry | |
Radial velocity (Rv) | -16 km/s |
Proper motion (μ) | RA: 21.82 mas/yr Dec.: -21.53 mas/yr |
Parallax (π) | 4.39 ± 0.60 mas |
Distance | approx. 700 ly (approx. 230 pc) |
Other designations | |
Database references | |
SIMBAD | data |
HD 177809 is a 6th magnitude star in the constellation Lyra, approximately 700 light years away from Earth. It is a red giant star of the spectral type M2III, meaning it possesses a surface temperature of under 3,500 kelvins. In comparison to the Sun, it is much larger and brighter, but its surface is cooler.[1]
References
- ^ a b "Simbad Query Result". Simbad. Retrieved October 17, 2007.
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