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γ Sextantis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sextans
Right ascension 09h 52m 30.4s
Declination −8° 06' 18"
Apparent magnitude (V) +5.07
Distance 262 ± 22 ly
(80 ± 7 pc)
Spectral type A1V
Other designations
HR 3909, HD 85558,
BD-07 2909, HIP 48437,
SAO 137199, GC 13593,
ADS 7555, CCDM 09525-0806

Gamma Sextantis (γ Sex / γ Sextantis) is a triple star system in the constellation Sextans. It is approximately 262 light years from Earth. The combined apparent magnitude of the system is +5.07.

The system is composed of a close binary star, Gamma Sextantis A and B, which is given the stellar classification A1. The two component stars are approximately 0.38 arcseconds apart, or approximately 30 Astronomical Units, and have apparent magnitudes of +5.8 and +6.2. They complete one orbit every 77.6 years. Orbiting the binary star, at a distance of 36 arcseconds, roughly a hundred times farther out, is Gamma Sextantis C, a 12th magnitude companion.


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