| Observation data EpochJ2000.0 EquinoxJ2000.0 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19h 01m 17.35683s[1] |
| Declination | +26° 17′ 29.0764″[1] |
| Apparent magnitude (V) | 5.69[2] |
| Characteristics | |
| Spectral type | B5V[3][2][4] |
| U−Bcolor index | −0.55[3] |
| B−Vcolor index | −0.086±0.002[2] |
| Astrometry | |
| Radial velocity (Rv) | −20.4±1.2[2] km/s |
| Proper motion (μ) | RA: −0.489[1]mas/yr Dec.: −9.207[1]mas/yr |
| Parallax (π) | 4.1038±0.0835 mas[1] |
| Distance | 790 ± 20 ly (244 ± 5 pc) |
| Absolute magnitude (MV) | −0.80[2] |
| Details | |
| Mass | 5.4[4] M☉ |
| Luminosity | 232.54[5] L☉ |
| Surface gravity (log g) | 4.5[4] cgs |
| Temperature | 10,540[5] K |
| Rotational velocity (v sin i) | 268±34[6] km/s |
| Age | 11[4] Myr |
| Other designations | |
| BD+26°3429,FK5 3518,GC 26151,HD 176871,HIP 93393,HR 7202,SAO 86707[7] | |
| Database references | |
| SIMBAD | data |
HD 176871 is a single[8]star in the northernconstellation ofLyra, positioned near the southern constellation border withVulpecula. This object has a blue-white hue and is dimly visible to the naked eye with anapparent visual magnitude of 5.69.[2] It is located at a distance of approximately 790 light years from theSun based onparallax, and has anabsolute magnitude of −0.80.[2] The star is drifting closer with aradial velocity of −20 km/s.[2]
This is a normalB-type main-sequence star with astellar classification of B5V,[3] which means it is generating energy viacorehydrogen fusion. The star is around 11[4] million years old with 5.4[4] times themass of the Sun and is spinning rapidly with aprojected rotational velocity of 268 km/s.[6] It is radiating 233[5] times theluminosity of the Sun from itsphotosphere at aneffective temperature of 10,540 K.[5]