Phi1 Lupi is a solitary[11] star in the southern constellation of Lupus.

[2] Based upon an annual parallax shift of 11.86 mas as seen from Earth, it is located around 275 light years from the Sun.

[6] This is an evolved K-type giant star with a stellar classification of K5 III,[3] which means it has used up its core hydrogen and has expanded.

[7] It is a variable star of unknown type, with an amplitude of 0.008 in visual magnitude and a period of 4.82 days.

[12] The star is radiating 711[4] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,894 K.[8]