Alpha Sextantis

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α Sextantis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sextans
Right ascension 10h 07m 56.3s
Declination −0° 22′ 18″
Apparent magnitude (V) +4.48
Distance 287 ± 28 ly
(88 ± 8 pc)
Spectral type A0III
Other designations
HR 3981, HD 87887,
BD+00 2615, FK5 2814,
HIP 49641, SAO 137366,
GC 13916

Alpha Sextantis (α Sex, α Sextantis) is the brightest star in the constellation Sextans.[1] It is a white A-type giant with an apparent magnitude of +4.48. It is approximately 287 light years from Earth.

Alpha Sextantis is considered an informal "equator star", as it lies less than a quarter of a degree south of the celestial equator.[citation needed] In 1900, it was 7 minutes of arc north of the equator. As a result of movement of the Earth's axial tilt, it crossed over to the Southern Hemisphere in December 1923.[2]


External links[edit]

Astronomy Knowledge Database