Gamma Sagittae
 Location of γ Sagittae (circled) |
|
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Sagitta |
| Right ascension | 19h 58m 45.42863s |
| Declination | +19° 29′ 31.7281″ |
| Apparent magnitude (V) | +3.47 |
| Characteristics | |
| Evolutionary stage | Red Giant |
| Spectral type | M0- III |
| U−B color index | +1.93 |
| B−V color index | +1.57 |
| Astrometry | |
| Radial velocity (Rv) | −34.00 ± 0.2 km/s |
| Proper motion (μ) |
RA: 66.21 ± 0.14 mas/yr Dec.: 22.22 ± 0.12 mas/yr |
| Parallax (π) | 12.62 ± 0.18mas |
| Distance | 258 ± 4 ly (79 ± 1 pc) |
| Absolute magnitude (MV) | −1.11 |
| Details | |
| Mass | 1.37 M☉ |
| Radius | 55 R☉ |
| Luminosity | 562±75 L☉ |
| Surface gravity (log g) | 1.71 cgs |
| Temperature | 3805 K |
| Metallicity [Fe/H] | -0.14 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gamma Sagittae (Gamma Sge, γ Sagittae, γ Sge) is the brightest star in constellation Sagitta and is a red giant with an apparent magnitude of +3.47. It is approximately 258 ± 4 light years from Earth
The spectral type of γ Sagittae has been variously classified between K5 III and M0 III.
In Chinese, 左旗 (Zuǒ Qí), meaning Left Flag, refers to an asterism consisting of γ Sagittae, α Sagittae, β Sagittae, δ Sagittae, ζ Sagittae, 13 Sagittae, 11 Sagittae, 14 Sagittae and ρ Aquilae. Consequently, γ Sagittae itself is known as 左旗五 (Zuǒ Qí wǔ, English: the Fifth Star of Left Flag.)
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