Delta Sagittae
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagitta |
| Right ascension | 19h 47m 23.27s |
| Declination | +18° 32' 03.3" |
| Apparent magnitude (V) | +3.68 |
| Distance | 448 ly (137 pc) |
| Spectral type | M2II + B6 |
| Other designations | |
Delta Sagittae (Delta Sge, δ Sagittae, δ Sge) is a multiple star system in the constellation of Sagitta, with an apparent magnitude of +3.68. The primary component is a red M-type bright giant. It is approximately 448 light years from Earth.
Delta Sagittae is moving through the Galaxy at a speed of 9.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 35,300 light years from the center of the Galaxy.[1]
Naming
In Chinese, 左旗 (Zuǒ Qí), meaning Left Flag, refers to an asterism consisting of δ Sagittae, α Sagittae, β Sagittae, ζ Sagittae, γ Sagittae, 13 Sagittae, 11 Sagittae, 14 Sagittae and ρ Aquilae. Consequently, δ Sagittae itself is known as 左旗三 (Zuǒ Qí sān, Template:Lang-en.)[2]
References
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