Cluster with nebulosity · Perseus
omi Per Cloud
Deep skyIC 348
Scientific overview
omi Per Cloud is a cluster with nebulosity in the constellation Perseus. It spans about 10 arcminutes of sky.
Location in the sky
Precision measurements
Distances and velocities from SIMBAD · IC 348
| Distance | 1,032 ly | SIMBAD · catalogued |
| Physical size (major axis) | 3.002795 ly | SIMBAD · derived |
| Physical size (minor axis) | 3.002795 ly | SIMBAD · derived |
| Radial velocity | 15.44 ± 0.08 km/s | SIMBAD · measured |
| Right ascension (ICRS) | 56.132083 deg | SIMBAD · measured |
| Declination (ICRS) | 32.158889 deg | SIMBAD · measured |
Full field-level provenance
- Distance: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · mesDistance · dist · 2022ApJ...931..156P · catalogued value · source value 316.5 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
- Physical size (minor 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 · 2021A&A...647A..19T · 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 Perseus
| Object | Type | Mag | Size (′) |
|---|---|---|---|
| h Persei ClusterNGC 869 | Open cluster | 3.7 | 14.4 |
| chi Persei ClusterNGC 884 | Open cluster | 3.8 | 10.5 |
| California NebulaNGC 1499 | Nebula | 5 | 160 |
| M 34M 34 · NGC 1039 | Open cluster | 5.2 | 22.5 |
| NGC 1545NGC 1545 | Open cluster | 6.2 | 4.2 |
| NGC 1528NGC 1528 | Open cluster | 6.4 | 9.6 |
| NGC 1444NGC 1444 | Open cluster | 6.6 | 3.6 |
| NGC 1342NGC 1342 | Open cluster | 6.7 | 6.3 |
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.