Beta Sextantis

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β Sextantis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sextans
Right ascension 10h 30m 17.480s
Declination −0° 38′ 13.29″
Apparent magnitude (V) 5.0 to 5.1
Distance 345 ± 42 ly
(106 ± 13 pc)
Spectral type B6V
Other designations
β Sex, 30 Sextantis, HR 4119, HD 90994, BD +00 2663, FK5 2841, HIP 51437, SAO 137608, GC 14431
Data sources:
Hipparcos Catalogue,
GCVS (v. 4.2, 2004)

Beta Sextantis (β Sex, β Sextantis) is a variable star in the constellation Sextans. Beta Sextantis is a blue-white B-type main sequence dwarf. It is approximately 345 light years from Earth. It is classified as an Alpha2 Canum Venaticorum variable and its brightness varies from magnitude +5.00 to +5.10. The period of this variability is unclear but may be around 15.4 days.


Photometric variability of some early-type stars, G. Mathys, J. Manfroid, and P. Renson, Astronomy and Astrophysics Supplement Series, 63 (1986), pp. 403–416. Abstract on ADSABS