---
title: "NGC 18"
url: "https://spacecatalog.org/object/ngc-18"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. NGC 18 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-18"
---

# NGC 18

NGC 18 is a double [star](https://spacecatalog.org/stars) in the constellation [Pegasus](https://spacecatalog.org/constellation/pegasus), shining at apparent magnitude 14.00 (B). It was discovered in 1866.

## At a glance

- **WHAT IT IS:** Double star
- **HOW BRIGHT (B):** 14.00 — Faint: it takes a large telescope.
- **WHERE TO LOOK:** [Pegasus](https://spacecatalog.org/constellation/pegasus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Double star |
| APPARENT MAGNITUDE (B) | 14.00 |
| CONSTELLATION | Pegasus |
| RIGHT ASCENSION (J2000) | 00h 09m 23.1s |
| DECLINATION (J2000) | +27° 43′ 55.5″ |
| DISCOVERED | 1866 |

## Catalogue data

### HOW BRIGHT IT IS

What the light adds up to, measured through one filter at a time. A magnitude is a brightness on a backwards scale — the smaller the number, the brighter the object.

| Field | Value |
| --- | --- |
| Apparent magnitude (B) | 14.00 |

### OTHER NAMES AND NUMBERS

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

| Field | Value |
| --- | --- |
| OpenNGC type code | \*\* |
| Wikidata item | Q34415 |
| Wikipedia article | NGC 18 |

## Also known as

- NGC: NGC 18

## 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. NGC 18 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-18

```bibtex
@misc{spacecatalog_ngc-18,
  author       = {{SpaceCatalog}},
  title        = {{NGC 18}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ngc-18},
  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/ngc-18