---
title: "IC 4591"
url: "https://spacecatalog.org/object/ic-4591"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. IC 4591 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-4591"
---

# IC 4591

IC 4591 is an H II region in the constellation [Scorpius](https://spacecatalog.org/constellation/scorpius). Other catalogues list it as Ced 127, LBN 1096 and LBN 348.08+16.86.

## At a glance

- **WHAT IT IS:** H II region
- **HOW BIG ON THE SKY:** 12.0′ — About 0.4 of the full Moon's width.
- **WHERE TO LOOK:** [Scorpius](https://spacecatalog.org/constellation/scorpius) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | H II region |
| CONSTELLATION | Scorpius |
| RIGHT ASCENSION (J2000) | 16h 12m 18.2s |
| DECLINATION (J2000) | −27° 55′ 39.9″ |

## 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 |
| --- | --- |
| Major axis | 12′ |
| 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 | HII |
| Wikidata item | Q2430115 |

## Also known as

- Cederblad: Ced 127
- IC: IC 4591
- LBN: LBN 1096
- Lynds: LBN 348.08+16.86

## 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. IC 4591 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-4591

```bibtex
@misc{spacecatalog_ic-4591,
  author       = {{SpaceCatalog}},
  title        = {{IC 4591}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ic-4591},
  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-4591