Orion B (IC 434)
Also known as Orion B · IC 434
Orion B (IC 434) is an HII region (glowing hydrogen) in the constellation Orion.
Facts
| Type | HII region (glowing hydrogen) |
|---|---|
| Constellation | Orion |
| Position (J2000) | 5h 41m 00s, −2° 27′ |
| Brightness | magnitude 11 (smaller is brighter; the faintest stars the eye sees are about 6) |
| Size on the sky | 90′ × 30′ (the full Moon is about 31′) |
| Filter | H-beta filter (One of the few nebulae that show best through an H-beta filter, which passes only the blue-green light of hydrogen.) |
| Studied in | 98 scientific papers (SIMBAD) |
When and how to see it
Orion B (IC 434) is highest in the sky at midnight in December. From India (about 20° N) it climbs to about 68° above the horizon; from 50° N, to about 38°. 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 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) · OpenNGC · Data sources & credits