---
title: "ο Per Cloud"
url: "https://spacecatalog.org/object/ic-348"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. ο Per Cloud [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-348"
---

# ο Per Cloud

ο Per Cloud is a [nebula](https://spacecatalog.org/nebulae) with [cluster](https://spacecatalog.org/clusters) in the constellation [Perseus](https://spacecatalog.org/constellation/perseus). Other catalogues list it as BD +31 0643, Ced 20 and omi Per Cloud, among 10 designations in total. It was discovered in 1866.

## At a glance

- **WHAT IT IS:** Nebula with cluster
- **HOW BIG ON THE SKY:** 10.0′ — About 0.3 of the full Moon's width.
- **WHERE TO LOOK:** [Perseus](https://spacecatalog.org/constellation/perseus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Nebula with cluster |
| CONSTELLATION | Perseus |
| RIGHT ASCENSION (J2000) | 03h 44m 34.2s |
| DECLINATION (J2000) | +32° 09′ 46.2″ |
| DISCOVERED | 1866 |

## Catalogue data

### WHERE IT IS AND HOW IT MOVES

Position, motion across the sky and the size it covers on it. These are measurements of the object as seen from here, so every one of them depends on where here is.

| Field | Value |
| --- | --- |
| Radial velocity | 16 km/s |
| Redshift (z) | 5.3×10⁻⁵ |
| Major axis | 10′ |
| Minor axis | 10′ |

### OTHER NAMES AND NUMBERS

The identifiers other catalogues file this object under, for anyone joining this data to theirs.

| Field | Value |
| --- | --- |
| OpenNGC type code | Cl+N |
| Wikidata item | Q645964 |
| Wikipedia article | IC 348 |

## Also known as

- BD: BD +31 0643
- Cederblad: Ced 20
- Common name: omi Per Cloud
- HIP: HIP 17465
- IAU cluster: C 0341+321
- IC: IC 1985
- IC: IC 348
- LBN: LBN 758
- Lynds: LBN 160.47-17.86
- MWSC: MWSC 301

## Source

[OpenNGC](https://github.com/mattiaverga/OpenNGC) — CC-BY-SA-4.0

The producer asks: OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). Fields derived from it stay under CC BY-SA 4.0.

How this was made: https://spacecatalog.org/methods#source-openngc

## Cite this page

SpaceCatalog. ο Per Cloud \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-348

```bibtex
@misc{spacecatalog_ic-348,
  author       = {{SpaceCatalog}},
  title        = {{ο Per Cloud}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ic-348},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from OpenNGC.}
}
```

OpenNGC — CC-BY-SA-4.0

Acknowledgement the producer asks for: OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). Fields derived from it stay under CC BY-SA 4.0.

The page itself, with its pictures, the sky map and the observing tools: https://spacecatalog.org/object/ic-348