T Coronae Borealis
Also known as T CrB
T Coronae Borealis is a symbiotic star in the constellation Corona Borealis, about 2,970 light-years from Earth.
Recurrent nova, the "Blaze Star"
Facts
| Type | Symbiotic star (spectral type M3IIIe_sh) |
|---|---|
| Constellation | Corona Borealis |
| Position (J2000) | 15h 59m 30s, +25° 55′ |
| Distance | 2,970 light-years (its light set off about 2,970 years ago) |
| Brightness | magnitude 10.25 (smaller is brighter; the faintest stars the eye sees are about 6) |
| Studied in | 828 scientific papers (SIMBAD) |
When and how to see it
T Coronae Borealis is highest in the sky at midnight in May. From India (about 20° N) it climbs to about 84° above the horizon; from 50° N, to about 66°. To see it you need a small telescope.
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 Corona Borealis
Everything in Corona Borealis · All 88 constellations · All sky objects
Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · Data sources & credits