Orange giant · Sagittarius
24 Sagittarii
Also known as: 24 Sgr, HIP 91004
mag 5.52,100 light-years
About
24 Sagittarii is an orange giant of magnitude 5.5 in Sagittarius, about 2,100 light-years away.
How to find it
- 24 Sagittarii is in the constellation Sagittarius.
- Best evenings: around mid-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 56° 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 | 24 Sagittarii (24 Sgr) |
|---|---|
| Hipparcos number | HIP 91004 |
| Type | Orange giant |
| Spectral type | K3III |
| Colour | Orange-redB−V colour index 1.79 |
| Magnitude | 5.5The smaller the number, the brighter. |
| Distance | 2,100 light-yearsThe light you see left it around 0 BC. Distances this large are uncertain by 10% or more. |
| Proper motion | 0.008″ per year across the sky |
| Constellation | Sagittarius |
| Right ascension (J2000) | 18h 33m 53.5s |
| Declination (J2000) | −24° 01′ 56″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →