Beta Scuti
 Location of β Scuti (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Scutum |
| Right ascension | 18h 47m 10.47250s |
| Declination | −4° 44′ 52.3271″ |
| Apparent magnitude (V) | 4.22 |
| Characteristics | |
| Spectral type | G4IIa |
| U−B color index | +0.84 |
| B−V color index | +1.09 |
| Astrometry | |
| Radial velocity (Rv) | -21.30 km/s |
| Proper motion (μ) |
RA: -8.44 mas/yr Dec.: -16.37 mas/yr |
| Parallax (π) | 3.56 ± 0.43mas |
| Distance | approx. 900 ly (approx. 280 pc) |
| Absolute magnitude (MV) | -2.99 |
| Orbit | |
| Primary | Beta Scuti A |
| Companion | Bet Scuti B |
| 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 | |
| Luminosity | 1,270 L☉ |
| Surface gravity (log g) | 0.94 cgs |
| Temperature | 4,622 K |
| Metallicity [Fe/H] | -0.16 dex |
| Rotational velocity (v sin i) | 7.8 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Beta Scuti (β Sct, β Scuti) is a star in the constellation Scutum. It is approximately 920 light years from Earth. The primary star is radiating about 1,270 times the luminosity of the Sun from its outer atmosphere at an effective temperature of 4,622 K. The star is a yellow G-type bright giant with an apparent magnitude of +4.22.
It is a spectroscopic binary with an orbit of 2.3 years and eccentricity around 0.35; the secondary is about 3.3 magnitudes dimmer than the primary and estimated as type B9.
Beta Scuti was a latter designation of 6 Aquilae.
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