Hatysa
Also known as ι Ori · HR 1899
Hatysa is a spectroscopic binary star in the constellation Orion, about 1,630 light-years from Earth.
Facts
| Type | Spectroscopic binary star (spectral type O9IIIvar) |
|---|---|
| Constellation | Orion |
| Position (J2000) | 5h 35m 25s, −5° 54′ |
| Distance | 1,630 light-years (its light set off about 1,630 years ago) |
| Brightness | magnitude 2.77 (smaller is brighter; the faintest stars the eye sees are about 6) |
| Studied in | 796 scientific papers (SIMBAD) |
When and how to see it
Hatysa is highest in the sky at midnight in December. From India (about 20° N) it climbs to about 64° above the horizon; from 50° N, to about 34°. To see it you need the naked eye, even from a town.
Heights are worked out for India and for 50° N. Set your location in Settings to see them for where you are.
For tonight's best time from your own town, the darkness and the Moon, open it on the map and see its "Tonight from your location" card.
More in Orion
- Barnard's Loop
- De Mairan's Nebula (M43)
- Flame Nebula
- Horsehead Nebula
- M78 (NGC 2068)
- Monkey Head Nebula
- Orion Nebula (M42)
- TXS 0506+056
Everything in Orion · All 88 constellations · All sky objects
Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · Data sources & credits