Star profile

Rho Lupi

Hot blue star

3D likeness based on its real data · class B · ~15,000 K

What is Rho Lupi

Rho Lupi belongs to the Wolf, an ancient southern constellation wedged between Centaurus and Scorpius. It is a hot, blue-white B-type star some 316 light-years away, likely a member of the Scorpius-Centaurus association, the nearest group of young, massive stars to the Sun. Its sharp, energetic light is the unmistakable signature of stars born together only a few million years ago in that same patch of the sky.

Where it is and when to see it

Rho Lupi lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is May, when it culminates around midnight.

From London it never rises above the horizon.
From New York it never rises above the horizon.
From Sydney it culminates about 74° above the horizon.

It can be seen from anywhere south of 41° N.

It ranks no. 13 in brightness among the 74 stars of Lupus in our catalogue. To find it, start from Alpha Lupi, the brightest: it lies about 2° away (a fist at arm's length covers about 10°).

The light you see today left it about 320 years ago.

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Astronomical data for Rho Lupi

Constellation: Lupus
Apparent magnitude: 4.05
Distance: 316.1 light years
Coordinates (J2000): RA 219.472° · Dec -49.426°
Catalogue: HIP 71536 · HD 128345

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Lupus

Lupus has 74 stars in Stelvia's catalogue. Here are a few of them.

See all 74 stars in Lupus