[citation needed] The IAU Working Group on Star Names first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN; which included Miaplacidus for this star.

[16] Consequently, β Carinae itself is known as 南船五 (Nán Chuán wǔ, English: the Fifth Star of Southern Boat).

[17] The stellar classification of A1 III[4] mean that Miaplacidus is an evolved giant star that has exhausted the hydrogen at its core and has expanded.

[12] This star does not show an excess emission of infrared radiation that might otherwise suggest the presence of a debris disk.

Presently it is radiating 223 times as much luminosity as the Sun[9] from its outer envelope at an effective temperature of 9,150 K.[10] Despite its enlarged girth, this star still shows a rapid rotation rate, with a projected rotational velocity of 146 km/s.