Blue-white supergiant · Norma
μ Normae
Also known as: μ Nor, HIP 81122
mag 4.9
About
μ Normae is a blue-white supergiant of magnitude 4.9 in Norma.
How to find it
- μ Normae is in the constellation Norma.
- Best evenings: around mid-July it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
- Where on Earth: it is seen well, at least 10° up, from south of 36° N.
When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.
What you will see
- EyesNeeds a dark sky away from city lights.
- Binoculars (10×50)A sharp point; binoculars bring out its colour and the fainter stars around it.
- Telescope (6–8 inch)Still a point of light at any magnification — stars are too far away to show a disc. Low in the sky, bright stars twinkle and flash colours.
Stars look the same in any instrument: brighter and sharper, but never bigger.
Facts
| Designation | μ Normae (μ Nor) |
|---|---|
| Hipparcos number | HIP 81122 |
| Type | Blue-white supergiant |
| Spectral type | B0Ia |
| Colour | WhiteB−V colour index 0.04 |
| Magnitude | 4.9The smaller the number, the brighter. |
| Proper motion | 0.003″ per year across the sky |
| Constellation | Norma |
| Right ascension (J2000) | 16h 34m 05.0s |
| Declination (J2000) | −44° 02′ 43″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →