Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lyra |
Right ascension | 18h 46m 13.01070s[1] |
Declination | +41° 26′ 30.5041″[1] |
Apparent magnitude (V) | 6.06[2] |
Characteristics | |
Evolutionary stage | Main sequence[3] |
Spectral type | B6 V[4] |
B−V color index | −0.120±0.005[2] |
Astrometry | |
Radial velocity (Rv) | −19.1±2.9[2] km/s |
Proper motion (μ) | RA: −1.441[1] mas/yr Dec.: +0.858[1] mas/yr |
Parallax (π) | 3.6200 ± 0.0622 mas[1] |
Distance | 900 ± 20 ly (276 ± 5 pc) |
Absolute magnitude (MV) | −1.14[2] |
Details | |
Mass | 4.59±0.23[3] M☉ |
Luminosity | 701+194 −151[3] L☉ |
Surface gravity (log g) | 3.81±0.08[5] cgs |
Temperature | 13,932±96[3] K |
Metallicity [Fe/H] | −0.04±0.08[5] dex |
Rotational velocity (v sin i) | 116±8[6] km/s |
Age | 22.4[7] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 173936 is a star in the northern constellation of Lyra. It has a blue-white hue and is just barely visible to the naked eye with an apparent visual magnitude of 6.06.[2] Based upon parallax measurements, the star is located at a distance of approximately 900 light years from the Sun,[1] and has an absolute magnitude of −1.14.[2] It is drifting closer with a radial velocity of −19 km/s.[2]
This object is a B-type main-sequence star with a stellar classification of B6 V.[4] It is around 22.4[7] million years old with 4.6[3] times the mass of the Sun and has a high rate of spin, showing a projected rotational velocity of 116 km/s.[6] It is radiating 701[3] times the luminosity of the Sun from its photosphere at an effective temperature of 13,932 K.[3]