Back Delta Scuti AST Delta Scuti Catalan Delta Scuti German Delta Scuti Spanish دلتا سپر Persian Delta Scuti Finnish Delta Scuti French דלתא במגן HE Delta Scuti Italian たて座デルタ星 Japanese
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scutum |
| Right ascension | 18h 42m 16.42690s[1] |
| Declination | −09° 03′ 09.1889″[1] |
| Apparent magnitude (V) | 4.60 - 4.79[2] |
| Characteristics | |
| Spectral type | F2 IIIp[3] |
| U−B color index | +0.16[4][2] |
| B−V color index | +0.35[4] |
| Variable type | δ Sct[2] |
| Astrometry | |
| Radial velocity (Rv) | −42.83±1.21[1] km/s |
| Proper motion (μ) | RA: +7.3 mas/yr[1] Dec.: +1.212 mas/yr[1] |
| Parallax (π) | 16.1899 ± 0.1157 mas[1] |
| Distance | 201 ± 1 ly (61.8 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.72±0.04[5] |
| Details | |
| Mass | 1.97–2.27[6] M☉ |
| Radius | 4.07–4.25[6] R☉ |
| Luminosity | 36.3–38.7[6] L☉ |
| Surface gravity (log g) | 3.5[7] cgs |
| Temperature | 7,000[6] K |
| Metallicity [Fe/H] | 0.41[5] dex |
| Rotational velocity (v sin i) | 25.5[7] km/s |
| Age | 1.03–1.09[6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Delta Scuti, Latinized from δ Scuti, is a variable star in the southern constellation Scutum. With an apparent visual magnitude that fluctuates around 4.72,[4] it is the fifth-brightest star in this small and otherwise undistinguished constellation. Analysis of the parallax measurements place this star at a distance of about 200 light-years (61 parsecs) from Earth.[1] It is drifting closer with a radial velocity of −43 km/s.[1]
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