Star profile
Mu Lupi
Hot blue starWhat is Mu Lupi
Mu Lupi looks like a single blue dot from Earth, but it is a system of three hot stars and a barely detected brown dwarf, all caught in the same gravitational dance 336 light-years away. The main one is a B8 dwarf with a searing surface, thousands of times hotter than a bonfire. The shadow of the southern Wolf hides this small knot of siblings.
Where it is and when to see it
Mu 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 culminates about 1° above the horizon.
- From Sydney it culminates about 76° above the horizon.
It can be seen from anywhere south of 42° N.
It ranks no. 16 in brightness among the 74 stars of Lupus in our catalogue. To find it, start from Alpha Lupi, the brightest: it lies about 6° away (a fist at arm's length covers about 10°).
The light you see today left it about 340 years ago.
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for Mu Lupi
- Constellation
- Lupus
- Apparent magnitude
- 4.27
- Distance
- 335.6 light years
- Coordinates (J2000)
- RA 229.633° · Dec -47.875°
- Catalogue
- HIP 74911 · HD 135734
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Other stars in Lupus
Lupus has 74 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Lupi2.30
- Beta Lupi2.68
- Gamma Lupi2.80
- Rho Lupi4.05
- Lambda Lupi4.07
- Theta Lupi4.22
- Omicron Lupi4.32
- Tau 2 Lupi4.33