NGC 7226
Scientific overview
NGC 7226 is an open cluster in the constellation Cepheus. It shines at apparent magnitude 9.6 and spans about 3 arcminutes of sky.
Observation guide
Guidance follows standard observing practice, derived from the object's real magnitude and position. A dark, moonless sky always helps.
Location in the sky
Precision measurements
Distances and velocities from SIMBAD · NGC 7226
| Distance | 14,677 ly | SIMBAD · catalogued |
| Physical size (major axis) | 12.808131 ly | SIMBAD · derived |
| Radial velocity | -72.93 ± 1.839 km/s | SIMBAD · measured |
| Right ascension (ICRS) | 332.605 deg | SIMBAD · measured |
| Declination (ICRS) | 55.398056 deg | SIMBAD · measured |
Full field-level provenance
- Distance: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · mesDistance · dist · 2021A&A...651A.104P · distance indicator: paral · catalogued value · source value 4500 pc · retrieved 2026-07-11
- Physical size (major axis): Centre de données astronomiques de Strasbourg (CDS) · derived (OpenNGC angular size × SIMBAD distance) · physical size = angular size × distance (small-angle); angular size from OpenNGC, distance from SIMBAD mesDistance · derived · retrieved 2026-07-11
- Radial velocity: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · rvz_radvel · 2023A&A...674A..37G · direct catalogue measurement · retrieved 2026-07-11
- Right ascension (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · ra · 2021A&A...647A..19T · direct catalogue measurement · retrieved 2026-07-11
- Declination (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · dec · 2021A&A...647A..19T · direct catalogue measurement · retrieved 2026-07-11
Physical size is derived from the OpenNGC angular size and the catalogued distance (small-angle: size = angle × distance). This is a Galactic object: its Doppler shift is shown as a radial velocity, not a cosmological redshift. Fields a source did not provide are omitted, never invented.
Other objects in Cepheus
| Object | Type | Mag | Size (′) |
|---|---|---|---|
| NGC 7160NGC 7160 | Open cluster | 6.1 | 4.2 |
| Iris NebulaC 4 · NGC 7023 | Nebula | 7.2 | 10 |
| NGC 7380NGC 7380 | Cluster with nebulosity | 7.2 | 25 |
| NGC 7234NGC 7234 | Open cluster | 7.7 | 2.4 |
| NGC 6939NGC 6939 | Open cluster | 7.8 | 12 |
| NGC 7510NGC 7510 | Open cluster | 7.9 | 3.9 |
| NGC 188C 1 · NGC 188 | Open cluster | 8.1 | 17.7 |
| NGC 7261NGC 7261 | Open cluster | 8.4 | 6.9 |
Sources
The primary and reference sources this topic draws on.
- OpenNGCOpenNGC (M. Verga) — NGC/IC, Messier, and Caldwell catalogue data
Openly-licensed deep-sky catalogue: object types, positions, magnitudes, sizes, morphology, and cross-identifiers.