[12] Imai is a massive, hot and rapidly rotating star that is in the process of evolving into a giant, and is located at a distance of about 345 light-years (106 parsecs) from the Sun.

[12] Imai is the name selected for the star designated Delta Crucis by the Mursi people of modern-day Ethiopia.

Presently it is radiating around 8,100 times the luminosity of the Sun from its outer atmosphere at an effective temperature of 20,400 K,[9] causing it to glow with a blue-white hue.

[19] Consequently, δ Crucis itself is known as 十字架四 (Shí Zì Jià sì, English: the Fourth Star of Cross).

[21] δ Cru is represented in the flags of Australia, New Zealand, Samoa and Papua New Guinea as one of the stars comprising the Southern Cross.