HD 174179
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Lyra |
| Right ascension | 18h 47m 57.3730s |
| Declination | +31° 45' 24.607" |
| Apparent magnitude (V) | 6.047 |
| Characteristics | |
| Spectral type | B3IVp |
| U−B color index | -0.67 |
| B−V color index | -0.13 |
| Astrometry | |
| Radial velocity (Rv) | -15.0 km/s |
| Proper motion (μ) | RA: 0.10 mas/yr Dec.: -3.85 mas/yr |
| Parallax (π) | 3.07 ± 0.56 mas |
| Distance | approx. 1,100 ly (approx. 330 pc) |
| Other designations | |
HD 174179 is a 6th magnitude star in the constellation Lyra, approximately 1,100 light years from Earth. It is a bluish white subgiant star of the spectral type B3IVp, meaning it possesses a surface temperature of 11,000 to 25,000 kelvins. Its surface is at least twice as hot as the Sun, and it is larger and brighter in comparison.[1] The "p" in its spectral type signifies that there is an unspecified peculiarity with the star's spectral type.[2]
[edit] References
- ^ a b "Simbad Query Result". Simbad. http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+174179&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id. Retrieved October 17, 2007.
- ^ SkyTonight: The Spectral Types of Stars
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