Orange giant · Sagittarius
Alnasl
Also known as: γ² Sagittarii (γ² Sgr), HIP 88635
mag 3.097 light-years
About
Alnasl (γ² Sagittarii) is an orange giant of magnitude 3.0 in Sagittarius, about 97 light-years away.
How to find it
- Alnasl is in the constellation Sagittarius.
- Best evenings: around early August 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 50° N.
- Star patterns: Teapot.
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
- EyesEasy, even from town.
- 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
| Proper name | Alnasl |
|---|---|
| Designation | γ² Sagittarii (γ² Sgr) |
| Hipparcos number | HIP 88635 |
| Type | Orange giant |
| Spectral type | K0III |
| Colour | Pale orangeB−V colour index 0.98 |
| Magnitude | 3.0The smaller the number, the brighter. |
| Distance | 97 light-yearsThe light you see left it around 1929. |
| Proper motion | 0.19″ per year across the sky |
| Constellation | Sagittarius |
| Right ascension (J2000) | 18h 05m 48.5s |
| Declination (J2000) | −30° 25′ 27″ |
More in Sagittarius
M24Small Sagittarius Star CloudOther · mag 4.5
M25Open clustermag 4.6
M22Great Sagittarius ClusterGlobular cluster · mag 5.1
M23Open clustermag 5.5
M8Lagoon NebulaEmission nebula · mag 5.8
M21Open clustermag 5.9
M18Open clustermag 6.9
M28Globular clustermag 6.9Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →