Beta Scuti
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scutum |
| Right ascension | 18h 47m 10.474s |
| Declination | −04° 44′ 52.34″ |
| Apparent magnitude (V) | 4.22 |
| Characteristics | |
| Evolutionary stage | Giant star |
| Spectral type | G4IIa |
| U−B color index | +0.84 |
| B−V color index | +1.09 |
| Astrometry | |
| Radial velocity (Rv) | −28.75±4.88 km/s |
| Proper motion (μ) | RA: −7.972 mas/yr Dec.: −16.398 mas/yr |
| Parallax (π) | 4.8549±0.3403 mas |
| Distance | 670 ± 50 ly (210 ± 10 pc) |
| Absolute magnitude (MV) | −2.99 |
| Orbit | |
| Period (P) | 834 days |
| Semi-major axis (a) | 2.8 mas |
| Eccentricity (e) | 0.350 |
| Inclination (i) | 105.9° |
| Longitude of the node (Ω) | 288.1° |
| Periastron epoch (T) | 2422480.9 |
| Argument of periastron (ω) (secondary) | 33.9° |
| Details | |
| Radius | 49.26+3.24 −3.72 R☉ |
| Luminosity | 1,315±186 L☉ |
| Surface gravity (log g) | 0.94 cgs |
| Temperature | 4,951±25 K |
| Metallicity [Fe/H] | -0.16 dex |
| Rotational velocity (v sin i) | 7.8 km/s |
| Other designations | |
| β Sct, BD−04°4582, FK5 1489, GC 25730, GSC 05122-01426, HIP 92175, HR 7063, HD 173764, SAO 142618, CCDM 18472-0445 | |
| Database references | |
| SIMBAD | data |
Beta Scuti, Latinized from β Scuti, is a binary star system in the southern constellation Scutum. Based upon an annual parallax shift of 4.85 mas as seen from Earth, it is located approximately 670 light years from the Sun.