Delta Sagittae
Binary star in Sagitta with a red giant and blue companion.
Delta Sagittae, also named Zuoqi, is a binary star in Sagitta. The primary is a red M-type bright giant, the secondary a B-type main-sequence star. It is a spectroscopic binary with a composite spectrum and an orbital period of about 10 years. The system is also a variable star, with unpredictable brightness changes between magnitudes 3.75 and 3.83.
Quick Facts
- Apparent magnitude
- +3.68
- Distance from earth
- approximately 430 light years
- Orbital period
- about 10 years
- Orbital eccentricity
- about 0.44
- Variable star magnitude range
- 3.75 to 3.83
- Galactic orbit range
- 23,800 to 35,300 light years from the Galactic center
Facts from the source article.
More in Bright Stars by Bayer Designation: Binary and Multiple Stars
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