Star profile
Omicron Lupi
Hot blue starWhat is Omicron Lupi
Omicron Lupi is a blue-white B-type star some 404 light-years away, one more young massive sun within the Scorpius-Centaurus association. Despite that distance, its raw light reaches the Earth at magnitude 4.3, betraying a luminosity several hundred times that of the Sun. It is nuclear energy turned into blue —an extravagant, brief flare on a cosmic timescale.
Where it is and when to see it
Omicron 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 6° above the horizon.
- From Sydney it culminates about 80° above the horizon.
It can be seen from anywhere south of 46° N.
It ranks no. 17 in brightness among the 74 stars of Lupus in our catalogue. To find it, start from Alpha Lupi, the brightest: it lies about 4° away (a fist at arm's length covers about 10°).
The light you see today left it about 400 years ago.
It opens in your browser. Free, no account, nothing to install.
Leave your signature on Omicron Lupi
Your name and a message go up on the map for everyone to read. Signing is free.
Without a lock, someone else can replace your signature. How the lock works
We'll ask for an email to confirm it's you, no password.
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 Omicron Lupi
- Constellation
- Lupus
- Apparent magnitude
- 4.32
- Distance
- 404.2 light years
- Coordinates (J2000)
- RA 222.910° · Dec -43.575°
- Catalogue
- HIP 72683 · HD 130807
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.
- Alpha Lupi2.30
- Beta Lupi2.68
- Gamma Lupi2.80
- Lambda Lupi4.07
- Theta Lupi4.22
- Mu Lupi4.27
- Tau 2 Lupi4.33
- Omega Lupi4.34