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Struve 2398

STF 2398, Gliese 725
HD 173739/173740, LHS 58/59

Proper NameNone
Bayer DesignationNone
Flamsteed NumberNone
HR (BSC)None
HD173739 (A), 173740 (B)
Other DesignationsSTF 2398, Gliese 725; LHS 58 (A), LHS 59 (B)
Right Ascension18h 42m 47s (A), 18h 42m 47s (B)
Declination+59° 37' 49" (A), +59° 37' 49" (B)
Distance11.5 light years
3.5 parsecs
MagnitudeApparent: +8.89 (A), +9.96 (B)
Absolute: +11.16 (A), +12.23 (B)
Spectral ClassM3V red dwarf (A), M3.5V red dwarf (B)
Planets in this system Struve 2398 B b, super Earth or small gas giant (unconfirmed)
Struve 2398 B c, super Earth (unconfirmed)
Optimum VisibilityJuly (Usually visible from northern latitudes)

The two red dwarfs that together make up the binary system Struve 2398 can be easily distinguished as distinct stars in this image. Struve 2398 A is the slightly brighter northern member of the pair, while its companion Struve 2398 B is the fainter star to the south of the central reticle. Imagery provided by Aladin sky atlas


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