HD 174179
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.06[1] |
| Characteristics | |
| Spectral type | B3IVp[3][4] |
| 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: +1.093[2] mas/yr Dec.: −3.957[2] mas/yr |
| Parallax (π) | 2.5407±0.0769 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −1.57[1] |
| Details | |
| Mass | Script error: No such module "val".[4] Template:Solar mass |
| Luminosity (bolometric) | 2,036[5] Template:Solar luminosity |
| Temperature | 17,900[5] K |
| Rotational velocity (v sin i) | 5[6] km/s |
| Age | Script error: No such module "val".[4] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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HD 174179 is a single[8] star in the northern constellation of Lyra. It has a white hue and is dimly visible to the naked eye with an apparent visual magnitude of 6.06.[1] The star is located at a distance of approximately 1,280 light years from the Sun based on parallax,[2] but is drifting closer with a radial velocity of −15 km/s.[1]
The star is an estimated 33[4] million years old with a low projected rotational velocity of 5 km/s.[6] It has 6.6[4] times the mass of the Sun and is radiating 2,036[5] times the Sun's luminosity from its photosphere at an effective temperature of 17,900 K.[5]
HD 174179 is a Be star, showing Balmer emission lines in its spectrum at times. It has a stellar classification of B3IVp,[4] with 'p' indicating spectral features of a shell star.[3] A 1976 study found no emission features,[9] but the star was reported to show emission lines again in later studies.[10][11]
References
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- ↑ a b c d e f g Template:Cite XHIP
- ↑ a b c d e f Template:Cite DR2
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
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