4 Scorpii
4 Scorpii is a single star in the southern zodiac constellation of Scorpius. With an apparent visual magnitude of +5.6, it is dimly visible to the naked eye under good viewing conditions. The distance to this star can be estimated from its annual parallax shift of , which yields a value of around 410 light years. It is moving closer to the Sun with a heliocentric radial velocity of −29 km/s and will reach perihelion in about two million years at an estimated distance of . The stellar classification of 4 Scorpii is A3 V, indicating this is an ordinary A-type main-sequence star. It has 2.6 times the mass of the Sun and is radiating around 92 times the Sun's luminosity from its photosphere at an effective temperature of about 8,356 K.

References

A-type main-sequence stars
Scorpius
Durchmusterung objects
Scorpii, 04
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fr:1 Scorpii