Английская Википедия:59 Serpentis
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59 Serpentis, also known as d Serpentis, is a multiple star in the constellation Serpens.[1] The system shows irregular variations in brightness between magnitudes 5.17 and 5.29.[2]
Components
59 Serpentis appears as a close pair of stars, of 5th magnitude and 7th magnitude respectively, separated by four arc-seconds. The brighter of the two is itself an even closer binary with the two stars separated by only Шаблон:Val, and only Шаблон:Val when they were first detected. The stars are designated Aa, Ab, and B.[3]
The primary star, component Aa, is a G0 giant. Component Ab is spectroscopic binary with a period of 1.85 days; the two stars are very similar A-class main sequence stars. Component B is an F5V possible astrometric binary, but with little known about the orbit or the possible companion.[4]
A much fainter star Шаблон:Val away is also thought to be a member of the system, having a common proper motion and similar Gaia parallax, and is designated as component C.[4]
References
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- Английская Википедия
- Serpens
- Bayer objects
- Flamsteed objects
- A-type main-sequence stars
- G-type giants
- Irregular variables
- Bright Star Catalogue objects
- Henry Draper Catalogue objects
- Hipparcos objects
- Durchmusterung objects
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