Phi Centauri

It is visible to the naked eye with an apparent visual magnitude of +3.7.

[2] The annual parallax shift is 6.21 mas[1] as measured from Earth, which yields a distance estimate of around 530 light years.

[5] This is a B-type subgiant star with a stellar classification of B2 IV.

[3] It has no known companions, but does show radial velocity variations and higher order pulsations in the spectrum.

It is radiating around 4,000[7] times the Sun's luminosity from its photosphere at an effective temperature of about 21,638 K.[6] This star is a proper motion member of the Upper Centaurus–Lupus sub-group in the Scorpius–Centaurus OB association, the nearest such co-moving association of massive stars to the Sun.