Gliese 638
Gliese 638 is a main sequence star in the constellation of Hercules. It is located about 31.9 light years from the Earth. This is a suspected variable star with a measured apparent magnitude that ranges from 8.09–8.11.[2] As a K-class star, it has a lower mass than the Sun, and consequently is less luminous.
References
- ^ Wilson, O. C. (1962). "Relationship between colors and spectra of late main-sequence stars". Astrophysical Journal 136: 793–799. Bibcode 1962ApJ...136..793W. doi:10.1086/147437.
- ^ Kukarkin, B. V. et al. (1981). Catalogue of suspected variable stars. Moscow, USSR: Academy of Sciences.
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← Star systems within 30–35 light-years
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DA
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LHS 145 (31.7 ± 0.3 ly; 1 star) • Gliese 127.1 (33.4 ± 0.6 ly; 2 stars) • WD 0821-669 (34.7 ± 0.4 ly; 1 star)‡
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DC
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GJ 3182 (33.6 ± 1.3 ly; 1 star) • Gliese 339.1 (33.7 ± 0.6 ly; 1 star)
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DQ
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GJ 3306 (31.0 ± 0.8 ly; 1 star)
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SDSS J1416+13 (25.7 ± 5.5 ly; 2 brown dwarfs)‡ • WISE 1647+5632 (28.1 + 9.4/- 5.6 ly; 1 brown dwarf)‡ • 2MASS J08251968+2115521 ( 34.8 ± 0.4 ly; 1 brown dwarf)‡
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In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems possibly located within declared distance interval, but probably not.
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← «Bright» star systems within 30–40 light-years →
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In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Italic are systems possibly located within declared distance interval, but probably not.
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