| Observation data EpochJ2000.0 EquinoxJ2000.0 | |
|---|---|
| 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−Vcolor 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 | |
| BD+41°3137,FK5 3493,GC 25732,HD 173936,HIP 92098,HR 7073,SAO 47779[8] | |
| Database references | |
| SIMBAD | data |
HD 173936 is astar in the northernconstellation ofLyra. It has a blue-white hue and is just barely visible to the naked eye with anapparent visual magnitude of 6.06.[2] Based uponparallax measurements, the star is located at a distance of approximately 900 light years from theSun,[1] and has anabsolute magnitude of −1.14.[2] It is drifting closer with aradial velocity of −19 km/s.[2]
This object is aB-type main-sequence star with astellar classification of B6 V.[4] It is around 22.4[7] million years old with 4.6[3] times themass of the Sun and has a high rate of spin, showing aprojected rotational velocity of 116 km/s.[6] It is radiating 701[3] times theluminosity of the Sun from itsphotosphere at aneffective temperature of 13,932 K.[3]