White subgiant · Hercules
Sarin
Also known as: δ Herculis (δ Her), HIP 84379
mag 3.175 light-years
About
Sarin (δ Herculis) is a white subgiant of magnitude 3.1 in Hercules, about 75 light-years away.
How to find it
- Sarin is in the constellation Hercules.
- Best evenings: around late 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 north of 55° S.
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
- EyesVisible from the suburbs on a clear night, but lost in bright city skies.
- 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 | Sarin |
|---|---|
| Designation | δ Herculis (δ Her) |
| Hipparcos number | HIP 84379 |
| Type | White subgiant |
| Spectral type | A3IVv SB |
| Colour | WhiteB−V colour index 0.08 |
| Magnitude | 3.1The smaller the number, the brighter. |
| Distance | 75 light-yearsThe light you see left it around 1951. |
| Proper motion | 0.16″ per year across the sky |
| Constellation | Hercules |
| Right ascension (J2000) | 17h 15m 01.9s |
| Declination (J2000) | +24° 50′ 21″ |
More in Hercules
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M92Globular clustermag 6.5.jpg?width=160)
NGC 6229Prize Comet Globular ClusterGlobular cluster · mag 9.9
IC 4593White-eyed Pea NebulaPlanetary nebula · mag 10.7Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →