Bubble Nebula
Also known as NGC 7635
Bubble Nebula is an HII region (glowing hydrogen) in the constellation Cassiopeia, about 8,810 light-years from Earth.
Bubble blown by a massive star
Facts
| Type | HII region (glowing hydrogen) |
|---|---|
| Constellation | Cassiopeia |
| Position (J2000) | 23h 20m 45s, +61° 12′ |
| Distance | 8,810 light-years (its light set off about 8,810 years ago) |
| Brightness | magnitude 11 (smaller is brighter; the faintest stars the eye sees are about 6) |
| Size on the sky | 9′ × 9′ (the full Moon is about 31′) |
| Filter | UHC (narrowband) filter (Glowing gas shines in a few colours of hydrogen and oxygen: a UHC filter passes those and blocks most light pollution and sky glow.) |
| Studied in | 181 scientific papers (SIMBAD) |
When and how to see it
Bubble Nebula is highest in the sky at midnight in September. From India (about 20° N) it climbs to about 49° above the horizon; from 50° N, to about 79°. 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 Cassiopeia
- Cassiopeia A
- Fish Head Nebula
- Heart Nebula
- M52 (NGC 7654)
- M103 (NGC 581)
- Pacman Nebula
- Soul Nebula
- Tycho's Supernova
Everything in Cassiopeia · All 88 constellations · All sky objects
Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · OpenNGC · Data sources & credits