HD 176871 is a single[8] star in the northern constellationofLyra, positioned near the southern constellation border with Vulpecula. This object has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.69.[2] It is located at a distance of approximately 790 light years from the Sun based on parallax, and has an absolute magnitude of −0.80.[2] The star is drifting closer with a radial velocity of −20 km/s.[2]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lyra |
Right ascension | 19h01m 17.35683s[1] |
Declination | +26° 17′ 29.0764″[1] |
Apparent magnitude (V) | 5.69[2] |
Characteristics | |
Spectral type | B5V[3][2][4] |
U−B color index | −0.55[3] |
B−V color 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 |
This is a normal B-type main-sequence star with a stellar classification of B5V,[3] which means it is generating energy via core hydrogen fusion. The star is around 11[4] million years old with 5.4[4] times the mass of the Sun and is spinning rapidly with a projected rotational velocity of 268 km/s.[6] It is radiating 233[5] times the luminosity of the Sun from its photosphere at an effective temperature of 10,540 K.[5]